Hitachi EV-1.5N1 Service Manual Download Page 242

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8. Troubleshooting

228

SMGB0079 rev.0 - 01/2013

Phenomenon

Cause

Check item

Action

(Turn OFF main switch)

Activation of High Pressure

Switch due to Excessively High

Discharge Pressure during

Cooling Operation

Insufficient Air Flow to Heat

Exchanger of Outdoor Unit

Clogging of Heat Exchanger?

Remover clogging

Check for dust on air filter

Remove dust

Check the service space

Secure service space

Check for outdoor fan speed

Replace fan motor if faulty

Excessively High Temp. Air to

Outdoor Unit Heat Exchanger

Check for hot air near the ceiling

Make good circulation

Check for short circuited air

Remove short-circuited air

Check for other heat source

Remove heat source

Faulty High

Pressure Switch

Faulty Pressure

Switch

Measure discharge pressure.

Check continuity after decreasing

of pressure

Replace it if faulty

Insufficient

Contacting

Measure resistance by tester

Repair looseness.

Replace connector

Incorrect

Connection

Check connections

Repair connections

Overcharged Refrigerant

Check cycle operating temp.

Charge refrigerant correctly

Mixture of Non-Condensable Gas in

Refrigerant Cycle

Check ambient temp. and

pressure

Recharge refrigerant after vacuum

pumping

Clogging of Discharge Piping

Check for clogging

Remove clogging

Faulty or Malfunction of Expansion

Valve

Check for clogging

Remove clogging

Check connecting wiring and

connectors

Replace connector

Check operating sound from coil

Replace coil

Check discharge gas thermistor

Replace thermistor

Check attaching state of discharge

gas thermistor

Reattach thermistor

Liquid Line Stop Valve or Gas Line

Stop Valve are not in Operation

Check stop valves

Fully open stop valve

Locking up Outdoor Unit Expansion

Valve Closure

Check expansion valve actuation

Replace outdoor

expansion valve

N O T E

This alarm code is indicated when the outdoor unit protective device is activated by high discharge pressure du-

ring cooling operation. Accordingly, when this alarm code is indicated, there is high possibility of high pressure

switch actuation and the above troubleshooting actions are based on such cases.

Summary of Contents for EV-1.5N1

Page 1: ...SMGB0079 rev 0 01 2013 Service Manual UTOPIA IVX PREMIUM IVX STANDARD SERIES H V N P C E UTOPIA IVX PREMIUM IVX STANDARD SERIES RAS 2 6 HVNP E RAS 4 12 HNP E RAS 3 6 HVNC E RAS 4 12 HNC E ...

Page 2: ......

Page 3: ... 7 8 9 10 11 12 Co nte nts General information Unit Installation Piping work and refrigerant charge Electrical Wiring Control System Optional functions Test Run Troubleshooting Spare Parts Servicing Electrical checks of main parts Maintenace notes ...

Page 4: ... II ...

Page 5: ...afety summary 14 2 2 Transportation of outdoor unit 15 2 3 Center of gravity 16 2 4 Factory supplied accessories for RAS 12HN P C 17 2 5 Installation space Initial ckeck 18 2 5 1 Basic sizes 18 2 5 2 RAS 2 2 5 HVNP RAS 3HVNC 19 2 5 3 RAS 3HVNPE RAS 4 6 H V N P C E RAS 8 10 HN P C E RAS 12HN P C 20 2 6 Place provision 23 2 6 1 Place provision for RAS 2 2 5 HVNP RAS 3HVNC 23 2 6 2 Place provision fo...

Page 6: ...onnecting flare adapter 71 3 4 Refrigerant charge 72 3 4 1 Caution of the pressure by check joint 73 3 4 2 Refrigerant charge quantity 74 3 5 Caution in case of refrigerant leakage 78 3 5 1 Maximum permitted concentration of hydrofluorocarbon HFC 78 3 5 2 Calculation of refrigerant concentration 78 3 5 3 Countermeasure for refrigerant leakage 78 3 6 Piping work for compatibility with the piping of...

Page 7: ...4 6 2 Simultaneous Operation 107 4 7 Electrical wiring diagrams 108 4 7 1 RAS 2 2 5 HVNP RAS 3HVNC 1 230V 50Hz 108 4 7 2 RAS 3HVNPE 1 230V 50Hz 109 4 7 3 RAS 4 6 HVNPE 1 230V 50Hz 110 4 7 4 RAS 4 6 HNPE 3N 400V 50Hz 111 4 7 5 RAS 4 6 HVNCE 1N 230V 50Hz 112 4 7 6 RAS 4 6 HNCE 3N 400V 50Hz 113 4 7 7 RAS 8 10 HN P C E 3N 400V 50Hz 114 4 7 8 RAS 12HNP 3N 400V 50Hz Preliminary data 115 4 7 9 RAS 12HNC ...

Page 8: ...ts 146 6 1 2 Available optional signals 148 6 1 3 Setting of the optional signals 150 6 1 4 Description of optional signals 151 6 2 Optional functions By 7 segment display 154 6 2 1 Setting of the optional functions 154 6 2 2 Description of the optional functions 157 6 3 Optional functions By remote control switch 161 7 Test run 167 7 1 Checking procedure before the test run 168 7 2 Test run proce...

Page 9: ... 277 8 4 1 Procedure for checking the DIP IPM inverter for indoor and outdoor units 277 8 4 2 Checking capacitors CB1 CB2 283 8 4 3 Fault diagnosis of DC fan motor 284 8 4 4 Checking procedure for the electronic expansion valve for indoor and outdoor units 285 8 4 5 Checking procedure for AC fan motor 285 8 4 6 Checking procedure for other parts 286 9 Spare parts 289 9 1 RAS 2 2 5 HVNP 290 9 1 1 C...

Page 10: ... 1 Removing service cover 332 10 3 1 2 Remove outlet grille 332 10 3 1 3 Removing upper cover 333 10 3 1 4 Removing bottom service cover and rear cover 333 10 3 1 5 Removing outdoor fan motor 334 10 3 1 6 Removing electrical box 335 10 3 1 7 Removing the compressor 336 10 3 1 8 Removing the High pressure switch and Pressure switch for control 339 10 3 1 9 Opening electrical box P plate 340 10 3 1 ...

Page 11: ...or 364 10 3 3 8 Removing High pressure switch and pressure switch for control 367 10 3 3 9 Opening electrical box P Mounting Plate 367 10 3 3 10 Removing reversing valve coil 368 10 3 3 11 Removing electronic expansion valve coil 369 10 3 3 12 Removing solenoid valve coil SVA and SVC 369 10 3 3 13 Removing reversing valve 370 10 3 3 14 Removing Electronic expansion Valve and Solenoid Valve 371 10 ...

Page 12: ...ing other electrical components 407 10 4 2 Outdoor Units RAS 8 10 HNCE 408 10 4 2 1 Removing service cover 408 10 4 2 2 Removing air outlet grille 408 10 4 2 3 Removing upper cover 409 10 4 2 4 Removing the bottom service cover and rear cover 409 10 4 2 5 Removing outdoor fan motor 410 10 4 2 6 Removing electrical box 411 10 4 2 7 Removing the compressor 412 10 4 2 8 Removing High pressure switch ...

Page 13: ...istor 445 11 3 Electronic expansion valve 447 11 4 High pressure protection device 448 11 5 Noise filter NF 450 11 5 1 Noise filter for 3N 400V 50Hz 450 11 5 2 Noise filter for 1 230V 50Hz 451 11 6 Capacitor CB1 CB2 452 11 7 Reactor DCL 453 11 7 1 Reactor DCL for 3N 400V 50Hz 453 11 7 2 Reactor DCL for 1 230V 50Hz 453 11 8 Scroll compressor 454 11 8 1 Reliable mechanism for low vibrating and low s...

Page 14: ...01 2013 12 3 Service and maintenance record 460 12 4 Service and maintenance record using the 7 segment display 461 12 5 Service and maintenance record by remote control switch 463 12 6 Pump down method for replacing the compressor 464 ...

Page 15: ... 3 1 2 1 Applied symbols 3 1 2 2 Norms and Regulations 3 1 3 Product guide 4 1 3 1 Classification of outdoor unit models 4 1 3 2 Classification of indoor unit models 4 1 3 3 Product guide Outdoor units 5 1 3 4 Outdoor unit accessory code list 6 1 3 5 Product guide Indoor units complementary systems 7 1 3 6 Product guide complementary systems 10 1 Gene ral inf ormat ion ...

Page 16: ...pean Directive on seasonal efficiency Lot 6 21 coming in 2015 depen ding on the model The Seasonal Energy Efficiency Ratio SEER in cooling and the Seasonal Coefficient of Performance SCOP in heating show an approach values to the real energy consumption UTOPIA series incorporate the Hitachi inverter technology which makes possible to adapt automatically and without the user operation the capacity ...

Page 17: ...of the unit In the texts following the danger symbol you can also find information on safe procedures during unit installation CAU TION The text following this symbol contains information and instructions relating directly to your safety and phy sical wellbeing Not taking these instructions into account could lead to minor injuries to you and others in the proximities of the unit Not taking these ...

Page 18: ... 50Hz N R410A refrigerant P Premium series C Standard series E Made in Europe Made in Japan XXX XX H X N X X 1 3 2 Classification of indoor unit models Unit type indoor unit RCI RCIM RCD RPC RPI RPIM RPK RPF RPFI Position separating hyphen fixed Capacity HP 0 8 1 0 1 5 2 0 2 5 3 0 4 0 5 0 6 0 8 0 10 0 FS SYSTEM FREE N R410A refrigerant H Hotel RPK 0 8 1 5 only 2 3 4 series E Made in Europe M Made ...

Page 19: ...E304007 RAS 4HNPE 7E304107 RAS 5HVNPE 7E304008 RAS 5HNPE 7E304108 RAS 6HVNPE 7E304009 RAS 6HNPE 7E304109 RAS 8HNPE 7E310110 RAS 10HNPE 7E310111 RAS 12HNP 60278974 IVX Standard 1 230V 50Hz 3N 400V 50Hz Unit Code Unit Code Unit Code Unit Code Unit Code RAS 3HVNC 60288523 RAS 4HVNCE 7E305027 RAS 4HNCE 7E305127 RAS 5HVNCE 7E305028 RAS 5HNCE 7E305128 RAS 6HVNCE 7E305029 RAS 6HNCE 7E305129 RAS 8HNCE 7E3...

Page 20: ... protection hood air inlet of rear side Zinc plate ASG NP280BS2 Snow protection hood air inlet of rear side Stainless plate ASG NP335B Snow protection hood air inlet of rear side Zinc plate 60291434 ASG NP335BS2 Snow protection hood air inlet of rear side Stainless plate ASG NP56L Snow protection hood air inlet of left side Zinc plate ASG NP63LS2 Snow protection hood air inlet of left side Stainle...

Page 21: ... 2 0FSN3Ei 7E403016 RCI 2 0FSN3 60278121 RCIM 1 5FSN2 60278013 RCI 2 5FSN3Ei 7E403017 RCI 2 5FSN3 60278122 RCIM 2 0FSN2 60278014 RCI 3 0FSN3Ei 7E403018 RCI 3 0FSN3 60278123 RCI 4 0FSN3Ei 7E403020 RCI 4 0FSN3 60278124 RCI 5 0FSN3Ei 7E403021 RCI 5 0FSN3 60278125 RCI 6 0FSN3Ei 7E403022 RCI 6 0FSN3 60278126 Panels Optional P N23NA 70531000 P AP160NA1 60297215 P N23WAM 60197160 P AP160NAE With motion s...

Page 22: ...2 60278030 RCD 2 0FSN2 60278031 RPC 2 0FSN2E 7E440003 RCD 2 5FSN2 60278032 RPC 2 5FSN2E 7E440004 RCD 3 0FSN2 60278033 RPC 3 0FSN2E 7E440005 RCD 4 0FSN2 60278034 RPC 4 0FSN2E 7E440007 RCD 5 0FSN2 60278035 RPC 5 0FSN2E 7E440008 RPC 6 0FSN2E 7E440009 Panels Optional P N23DNA 60297211 P N46DNA 60297212 N OTE The RCD models must be used in combination with the panels indicated above ...

Page 23: ...E424013 RPIM 0 8FSN4E 7E430013 RPIM 0 8FSN4E DU 7E431013 RPI 1 0FSN4E 7E424014 RPIM 1 0FSN4E 7E430014 RPIM 1 0FSN4E DU 7E431014 RPI 1 5FSN4E 7E424015 RPIM 1 5FSN4E 7E430015 RPIM 1 5FSN4E DU 7E431015 RPI 2 0FSN4E 7E424016 RPI 2 5FSN4E 7E424017 RPI 3 0FSN4E 7E424018 RPI 4 0FSN4E 7E424020 RPI 5 0FSN4E 7E424021 RPI 6 0FSN4E 7E424022 RPI 8 0FSN3E 7E424010 RPI 10 0FSN3E 7E424011 ...

Page 24: ...78150 RPF 2 5FSN2E 7E450004 RPFI 2 5FSN2E 7E460004 RPK 3 0FSN3M 60278151 RPK 4 0FSN3M 60278152 EV 1 5N1 1 60291791 NOTE Single combinations with IVX Premium Standard series not allowed 1 For RPK 0 8 1 5 FSNH3M models only 1 3 6 Product guide complementary systems KPI energy heat recovery unit Complementary systems KPI Energy recovery Heat recovery Active Energy Recovery DX section Unit Code Unit C...

Page 25: ...ev 0 01 2013 1 DX Interface Control box Expansion valve box DX Interface Model Code EXV 2 0E1 7E610900 EXV 2 5E1 7E610901 EXV 3 0E1 7E610902 EXV 4 0E1 7E610903 EXV 5 0E1 7E610904 EXV 6 0E1 7E610905 EXV 8 0E1 7E610906 EXV 10 0E1 7E610907 ...

Page 26: ......

Page 27: ... 8 10 HN P C E RAS 12HN P C 20 2 6 Place provision 23 2 6 1 Place provision for RAS 2 2 5 HVNP RAS 3HVNC 23 2 6 2 Place provision for RAS 3HVNPE RAS 4 6 H V N P C E RAS 8 10 HN P C E RAS 12HN P C 25 2 7 Optional parts and installation 29 2 7 1 Optional parts and installation for RAS 2 2 5 HVNP RAS 3HVNC 29 2 7 2 Optional parts and installation RAS 3HVNPE RAS 4 6 H V NCE 34 2 7 3 Optional parts and...

Page 28: ... area not accessible by the general public Aluminium fins have very sharp edges Pay attention to the fins in order to avoid injury Do not install the indoor units in a flammable environment to avoid a fire or an explosion Check to ensure that the ceiling slab is strong enough If not strong enough the indoor unit may fall down on you Do not install the indoor units outdoor unit remote control switc...

Page 29: ... 6 H V NCE RAS 12HN P C 1 A B C D 1 A B C D 1 Wire rope A Over 60º B 0 7 to 1 0 m C Do not remove the plastic band or the corrugate paper frame D Pass the wire ropes through each lifting hole in the wooden base as shown C AUTION Lift the outdoor unit in its factory packaging with 2 wire ropes For safety reasons ensure that the outdoor unit is lifted smoothly and does not lean Do not attach lifting...

Page 30: ... below At leat two persons are needed to move the unit RAS 2 2 5 HVNP RAS 3HVNC a 515 mm b 180 mm h 275 mm 1 RAS 3HVNPE a 600 mm b 195 mm h 370 mm 1 RAS 4 6 H V NCE For 4 HP a 590 mm b 180 mm h 360 mm For 5 6 HP a 600 mm b 195 mm h 370 mm RAS 4 6 H V NPE a 613 mm b 190 mm h 590 mm 1 RAS 8HNPE a 610 mm b 195 mm h 570 mm RAS 8HNCE a 615 mm b 190 mm h 560 mm RAS 10HNPE RAS 10HNCE a 610 mm b 195 mm h ...

Page 31: ...y supplied accessories for RAS 12HN P C Make sure that the following accessories are packed with the unit N O TE If any of these accessories are not packed with the unit please contact your dealer Accessory Quantity Pipe with Flare Nut for Refrigerant Piping 1 ...

Page 32: ...079 rev 0 01 2013 2 5 Installation space Initial ckeck N OT E The following images are for illustration purposes only 2 5 1 Basic sizes RAS 2HVNP RAS 2 5HVNP RAS 3HVNC All models except RAS 2HVNP RAS 2 5HVNP RAS 3HVNC Units in mm ...

Page 33: ...H A 1000 d In case that upper side obstacles exist serial units e In case of front side and either of the sides are open serial units 200 300 0 L 1 2 H A 500 1 2 H L H A 1000 300 f In case that surrounding wall exist serial units 0 L 1 2 A 500 1 2 H L H A 1000 A L 1000 0 L 1 2 H A 200 1 2 H L H A 350 g Horizontal multiple units h Vertical multiple units 0 L 1 2 H A 100 1 2 H L H A 200 1000 400 200...

Page 34: ...nd left sides Be sure to use the fan direction guide Allow 100 mm of space between units Leave open both right and left sides Upper Side Blocked Single Installation Multiple Installation Two units or more 100 mm or more of the side space is acceptable on the service cover side Allow 100 mm of space between units Leave open both right and left sides Leave open both right and left sides Be sure to u...

Page 35: ...open both right and left sides Be sure to use the fan direction guide Allow 100 mm of space between units Leave open both right and left sides No more than 2 units for multiple installation The length A is as shown in the following table L A 0 L 1 2H 600 or greater 1 2H L H 1400 or greater When L H use a base for outdoor unit to make L H Close the base not to allow the outlet air bypassed Lateral ...

Page 36: ... part A not to allow the outlet air bypassed Install to avoid the drain water from upper unit falling on the lower unit Be sure to use the fan direction guide Allow 100 mm of space between units Serial side way installation allowed but leave open both right and left sides Close the part A not to allow the outlet air bypassed Install to avoid the drain water from upper unit falling on the lower uni...

Page 37: ...pe cover 3 Front side 1 2 3 Example of fixing outdoor unit by anchor bolts 1 Max 17 mm After cut A 2 Concrete 3 Anchor bolt B Cut this portion when this type of anchor bolt is used If not done it will be difficult to remove the service cover B 1 2 3 3 Provide an adequate drainage around the foundation When installing the unit on a roof or a veranda drain water may turn to ice in a cold morning The...

Page 38: ...Recommended Metal Plate Size Field Supplied Material Hot Rolled Mild Steel Plate SPHC Plate Thickness 4 5 T 120 60 560 70 420 70 20 14 R 4 C10 320 460 Installing location where the unit will be exposed to strong wind Follow the instructions below to install on the rooftop or a location without surrounding buildings where strong wind is ex pected against the product 1 Choose a location where the ou...

Page 39: ...this portion of bolt If not it s difficult to remove Service cover 3 Mortar hole Ø100 x Depth 150 4 Anchor bolt M10 Ø12 5 Hole 5 Drainage Wide 100 x Depth 150 6 Drainage 7 Vibration proof rubber N O TE Space for downward piping space 1 2 3 4 5 6 7 4 Anchor bolt location in case of RAS 12HN P C 1 The whole base of the outdoor unit should be installed on a foundation When using vibration proof mater...

Page 40: ...ut this portion when this type of anchor bolt is used If not done it will be dificult to remove the service cover B 1 2 3 Fix unit to the wall 1 Fix the unit onto the wall as shown in the figures Field supplied bracket 2 Secure the foundation to avoid noise and warping 3 To avoid vibrations transferring to the building use a rubber mat RAS 3HVNPE RAS 4 6 H V NPE RAS 4 6 H V NCE RAS 8 10 HN P C E R...

Page 41: ...support field supplied 2 Anchor bolts field supplied C AUTION Follow these installation procedures carefully The installation must be done so as to ensure that the outdoor unit does not lean vibrate make a noise or fall in the event of strong gusts of wind or earthquakes Calculate the resistance to vibration caused by earthquakes to guarantee that the installation is sturdy enough to prevent falls...

Page 42: ...by strong winds 1 Select a place where the input or outlet side of the product is exposed to strong winds 2 When the outlet is exposed to strong winds Strong direct winds may cause a lack of air flow and negative effects on the unit operation RAS 3HVNPE RAS 4 6 H V NPE RAS 4 6 H V NCE RAS 8 10 HN P C E RAS 12HN P C C A U TION An excessively strong wind blowing against the outlet of the outdoor uni...

Page 43: ...it 1 1 2 1 Mounting dimension 2 Air flow guide Air discharge direction Upward downward left right Material Weather proof polypropylene resin Color Gray Weight 1 4 kg Accessories Fixing screw 4x M5 SUS x 12 4x M5 SUS x 30 Installation manual Self screw 2x M4 x 13 Installation restriction Wind Guard or Snow protection hood is not available to install with air flow guide Guard net is available to be ...

Page 44: ...lle 2 Air flow 3 Outdoor unit 4 M5 fixing screw x4 Accessories 5 Air flow guide 1 2 3 4 4 5 Service space In case of upward air discharge In case of right and left sides air discharge enough space for air discharge is required The downward air discharge is also available In such case install the base under the unit to secure enough space for air discharge In case of serial units installation air d...

Page 45: ...uard Attaching example of air wind guard Attach the air flow guide to the air discharge grille with four 4 screws supplied The fixing holes are located at 4 positions on the grille Screw tightening torque 2 4 3 1 N m Do not remove the air discharge grille for air flow guide installation C AUTION If the air guide is installed without discharge grille it may cause injury due to rotating fan Two wind...

Page 46: ... wire rope to prevent overturning 1 2 3 4 5 Rear suction hood Nº Part name Quantity 1 Right side plate 1 2 Left side plate 1 3 Upper front panel Upside 1 4 Upper front panel Downside 1 5 Hole for safety wire rope to prevent overturning 6 Fixing screw Accessories Left suction hood Nº Part name Quantity 1 Right side plate 1 2 Left side plate 1 3 Upper front panel Upside 1 4 Upper front panel Downsid...

Page 47: ... sheet Iron Stainless NSSC180 Bonderized steel sheet Iron Stainless NSSC180 Bonderized steel sheet Iron Stainless NSSC180 Color Gray 1 0Y8 5 0 5 or approximation Gray 1 0Y8 5 0 5 or approximation Gray 1 0Y8 5 0 5 or approximation Weight 3 kg 6 kg 3 kg Assembling Knockingdown parts assembled at field Components Hood For air discharge part x 1 For rear side air intake x 1 For left side air intake x ...

Page 48: ...1 per unit 1 1 2 1 Mounting dimension 2 Air flow guide Air discharge direction Upward downward left right Material Weather proof polypropylene resin Color Gray Weight 1 9 kg Accessories Fixing screw x 4 M5 SUS x 20 Installation manual Installation restriction Wind Guard or Snow protection hood is not available to install with air flow guide Guard net is available to be installed together Attaching...

Page 49: ...vice space In case of upward air discharge In case of right and left sides air discharge enough space for air discharge is required The downward air discharge is also available In such case install the base under the unit to secure enough space for air discharge In case of serial units installation air discharge should be upward 1 Min 200 mm 2 Outdoor unit 3 Air flow guide 4 Passage side ...

Page 50: ...ch the air flow guide to the air discharge grille with four 4 screws supplied The fixing holes are located at 4 positions on the grille Screw tightening torque 2 4 3 1 N m Do not remove the air discharge grille for air flow guide installation C A U TION If the air guide is installed without discharge grille it may cause injury due to rotating fan One windguard cover installation 1 Air discharge gr...

Page 51: ...nt overturning Rear suction hood Nº Part name Quantity 1 Right side plate 1 2 Left side plate 1 3 Upper front panel Upside 1 4 Upper front panel Downside 1 5 Fixing screw Accessories 6 Hole for safety wire rope to prevent overturning Left suction hood Nº Part name Quantity 1 Right side plate 1 2 Left side plate 1 3 Front panel Upside 1 4 Front panel Downside 1 5 Fixing hole x 2 6 Fixing screw Acce...

Page 52: ...eet Iron Stainless NSSC 180 Bonderized steel sheet Iron Stainless NSSC 180 Color Gray 1 0Y8 5 0 5 or approximation Gray 1 0Y8 5 0 5 or approximation Gray 1 0Y8 5 0 5 or approximation Weight 3 kg 14 kg 8 kg Assembling Knockingdown parts assembled at field Components Hood For air discharge part x 1 For rear side air intake x 1 Upper side x 1 lowe side x 1 For left side air intake x 1 Unit Fixing scr...

Page 53: ...A Image Quantity 2 per unit 1 1 2 1 Mounting dimension 2 Air flow guide Air discharge direction Upward downward left right Material Weather proof polypropylene resin Color Gray Weight 1 9 kg Accessories Fixing screw x 4 M5 SUS x 20 Installation manual Installation restriction Wind Guard or Snow protection hood is not available to install with air flow guide Guard net is available to be installed t...

Page 54: ... flow guides should be the same Service space In case of upward air discharge In case of right and left sides air discharge enough space for air discharge is required The downward air discharge is also available In such case install the base under the unit to secure enough space for air discharge In case of serial units installation air discharge should be upward 1 Min 200 mm 2 Outdoor unit 3 Air ...

Page 55: ...ard Attach the air flow guide to the air discharge grille with four 4 screws supplied The fixing holes are located at 4 positions on the grille Screw tightening torque 2 4 3 1 N m Do not remove the air discharge grille for air flow guide installation C AUTION If the air guide is installed without discharge grille it may cause injury due to rotating fan Two windguard covers installation 1 Air disch...

Page 56: ...turning Rear suction hood Nº Part name Quantity 1 Right side plate 1 2 Left side plate 1 3 Upper front panel Upside 1 4 Upper front panel Downside 1 5 Fixing screw Accessories 6 Hole for safety wire rope to prevent overturning 3 4 2 1 5 6 Left suction hood Nº Part name Quantity 1 Right side plate 1 2 Left side plate 1 3 Front panel Upside 1 4 Front panel Downside 1 5 Fixing hole x 2 6 Fixing screw...

Page 57: ...protection hood 1 Left suction hood 2 Fixing screw Accessories 3 Rear suction hood Upper side 4 Wire rope Optional For overturning protection 5 Rear suction hood Lower side 6 Air discharge hood 7 Air discharge grille 8 Air discharge grille A Front side B Left side C Rear side ...

Page 58: ...approximation Gray 1 0Y8 5 0 5 or approximation Weight 3 kg 14 kg 8 kg Assembling Knockingdown parts assembled at field Components Hood For air discharge part x 1 For rear side air intake x 1 Upper side x 1 lowe side x 1 For left side air intake x 1 Fixing screw 4 M5x12 tapping screw 11 M5x14 tapping screw 8 M5x12 tapping screw Fixing screw SUS 6 M5x14 tapping screw 6 M5x14 24 M5x14 tapping screw ...

Page 59: ...ity 2 per unit 1 1 2 1 Mounting dimension 2 Air flow guide Air discharge direction Upward downward left right Material Weather proof polypropylene resin Color Gray Weight 1 9 kg Accessories Fixing screw x 4 M5 SUS x 20 Installation manual Installation restriction Wind Guard or Snow protection hood is not available to install with air flow guide Guard net is available to be installed together Attac...

Page 60: ... flow guides should be the same Service space In case of upward air discharge In case of right and left sides air discharge enough space for air discharge is required The downward air discharge is also available In such case install the base under the unit to secure enough space for air discharge In case of serial units installation air discharge should be upward 1 Min 200 mm 2 Outdoor unit 3 Air ...

Page 61: ...ard Attach the air flow guide to the air discharge grille with four 4 screws supplied The fixing holes are located at 4 positions on the grille Screw tightening torque 2 4 3 1 N m Do not remove the air discharge grille for air flow guide installation C AUTION If the air guide is installed without discharge grille it may cause injury due to rotating fan Two windguard covers installation 1 Air disch...

Page 62: ...t name Quantity 1 Right side plate 1 2 Left side plate 1 3 Upper front panel Downside 1 4 Upper front panel Upside 1 5 Fixing screw Accessories 6 Hole for safety wire rope to prevent overturning 2 1 3 4 5 6 320 320 888 868 250 270 60 Left suction hood Nº Part name Quantity 1 Right side plate 1 2 Left side plate 1 3 Front panel upside 1 4 Front side downside 1 5 Fixing hole x 2 6 Fixing screw Acces...

Page 63: ...2 2 2 2 A B C 3 4 5 5 6 6 7 8 1100 1650 390 1 Left suction hood 2 Fixing screw Accessories 3 Rear suction hood Upper side 4 Wire rope Optional For overturning protection 5 Air discharge hood 6 Air discharge grille 7 Rear suction hood Lower side 8 Outdoor unit A Front side B Left side C Rear side ...

Page 64: ...Gray 1 0Y8 5 0 5 or approximation Weight 3 kg 14 kg 8 kg Assembling Knockingdown parts assembled at field Components Hood For air discherge part x 1 For rear side air intake x 1 Upper side x 1 lowe side x 1 For left side air intake x 1 Fixing screw 4x M5x12 l tapping screw 10x M5x14 l tapping screw 8x M5x12 l tapping screw Fixing screw SUS 6x M5x12 l tap ping screw 6x M5x14 l 24x M5x14 l tapping s...

Page 65: ... distributor selection 67 3 3 6 System installation 70 3 3 7 Connecting flare adapter 71 3 4 Refrigerant charge 72 3 4 1 Caution of the pressure by check joint 73 3 4 2 Refrigerant charge quantity 74 3 5 Caution in case of refrigerant leakage 78 3 5 1 Maximum permitted concentration of hydrofluorocarbon HFC 78 3 5 2 Calculation of refrigerant concentration 78 3 5 3 Countermeasure for refrigerant l...

Page 66: ... pipe C A U TION Do not use saws grindstones or other tools which cause copper powder When cutting pipes secure the part for brazing in accord ance with both national and local regulations Use security glasses and gloves for cutting or welding works Piping Connection When connecting liquid piping for units with piping longer than 15 meters apply a piping size of Ø9 52 mm 3 8 inches Fix the connect...

Page 67: ...a decrease of performance if not dew will occur on the piping surface Refrigerant circuit and Water circuit must be performed and inspected by a licensed technician and must com ply with all relevant European and national regulations Insulation Attach the pipe insulation to each branch using vinyl tape Attach also insulation to field supplied pipes in order to prevent the capacity decrease accordi...

Page 68: ... through the pipe ends Oxidation film during brazing without blowing nitrogen Insufficient flushing by nitrogen after brazing Clogging of expansion valve capil lary tube and filter Oxidation of oil Compressor failure Insufficient cooling or heating com pressor failure Pipe Protection 1 Mounting Caps 2 Taping 3 Pinching Flushing 3 No leakage No leakage shall exist Brazing failure Failed flaring wor...

Page 69: ... 0 1 0 41 8 Ø31 75 0 12 Ø32 0 0 1 0 47 12 0 09 0 0 13 0 12 0 0 13 Ø19 05 0 09 Ø19 3 0 1 0 44 10 Ø38 1 0 12 Ø38 3 0 1 0 52 14 0 09 0 0 16 0 12 0 0 18 A basic brazing method is shown below 1 Pre heat the outer tube for better flowing of the filler metal 2 Heat inner side tube evenly 3 Rubber plug 4 Packless valve 5 High pressure hose 6 0 03 to 0 05 MPa 0 3 to 0 5 Kg cm2 G 7 Reducer valve open this v...

Page 70: ...ipe bending work when connecting pipes 4 Check to ensure that the stop valves are completely closed before connecting pipes 5 Connect the field supplied refrigerant pipes to the indoor unit and outdoor unit Apply the oil thinly at the seat flare nut and pipe before tightening The required tightening torque is as follows Pipe Size Tightening Torque Nm Ø 6 35 mm 1 4 20 Ø 9 52 mm 3 8 40 Ø 12 70 mm 1 ...

Page 71: ... unit and make holes by cutting along the guideline at the rear of the cover or punching with a driver Remove the burr with a cutter and place a insulation field supplied to protect cables and pipes RAS 3HVNPE RAS 4 6 H V N P C E RAS 8 10 HN P C E RAS 12HN P C Guide Line Slits Front side of piping cover Guide Line Slits Front Side of Piping Cover Guide Line Slits Front side of piping cover CAUTION...

Page 72: ...check the size and remove part following the slit N OTE Place insulation field supplied to protect cables and pipes from being damaged by plate edges For the downward piping After removing the bottom of the piping cover perform piping and wiring works RAS 3HVNPE RAS 4 6 H V N P C E RAS 8 10 HN P C E RAS 12HN P C Gas piping Knock out hole Bottom base Cables Liquid piping Liquid Piping Gas Piping Wi...

Page 73: ...der 4 Check to ensure that the stop valves are completely closed before connecting pipes 5 Connect the field supplied refrigerant pipes to the indoor unit and outdoor unit Apply the oil thinly at the seat flare nut and pipe before tightening The required tightening torque is as follows Pipe Size Tightening Torque Nm Ø 6 35 mm 1 4 20 Ø 9 52 mm 3 8 40 Ø 12 70 mm 1 2 60 Ø 15 88 mm 5 8 80 Ø 19 05 mm 3...

Page 74: ... for service port Outdoor unit Tightening Torque Nm Gas valve Liquid valve Gas valve Liquid valve Gas valve Liquid valve Gas valve Liquid valve RAS 2 2 5 HVNP 7 9 7 9 33 42 33 42 33 42 33 42 14 18 14 18 RAS 3HVNC RAS 3HVNPE 9 11 7 9 68 82 33 42 33 42 33 42 14 18 14 18 RAS 4 6 H V NCE 9 11 7 9 68 82 33 42 33 42 33 42 14 18 14 18 RAS 4 6 H V NPE 7 9 68 82 33 42 20 25 33 42 14 18 14 18 RAS 8HN P C E ...

Page 75: ... work here Spindle type Ball type C A UTION At the test run fully open the spindle and ball stop valve If not fully opened the devices will be damaged Do not attempt to turn service valve rod beyond its stop Do not loosen the stop ring If the stop ring is loosened it is dangerous since the spindle will hop out An excess or a shortage of refrigerant is the main cause of trouble to the units Charge ...

Page 76: ...ld be designed using the following chart Keep the design point within the area of the chart which is showing the applicable height difference according to piping length 3 3 2 Piping system for header branch 1 indoor unit system O U from 2 to 10 HP 2 indoor units system O U from 2 to 12 HP 3 indoor units system O U from 4 to 12 HP 4 indoor units system O U from 4 to 12 HP pictures are as example ...

Page 77: ...ength 2 units A B C 50 60 85 100 115 3 units A B C D 60 95 100 130 4 units A B C D E F G 95 100 145 Maximum piping line after first branch 2 and 3 units B C D 10 15 4 units B D B E C F C G 10 15 Main piping length A A B C D E F G Maximum height difference Outdoor Indoor H Outdoor Unit is Higher Lower 30 20 Maximum height difference Indoor Indoor 3 10 Maximum height difference branch pipe Indoor 2 ...

Page 78: ...irst branch 2 and 3 units B C D 10 15 4 units B D B E C F C G 10 15 Main piping length A A B C D E F G Maximum height difference Outdoor Indoor H Outdoor Unit is Higher Lower 30 20 Maximum height difference Indoor Indoor 3 Maximum height difference branch pipe Indoor 2 3 and 4 indoor units system branch pipe branch pipe 4 indoor units system 3 B C B D C D C G B E C G B D C F B E C F B D 8 NO TE Th...

Page 79: ... 15 Total piping length L4 L31 L32 L33 60 95 100 145 Maximum height difference Outdoor Indoor H Outdoor Unit is Higher Lower 30 20 Maximum height Difference Indoor Indoor 10 Maximum height difference Branch pipe Indoor Branch pipe branch pipe 3 IVX Standard series m Outdoor Unit 4HP 5HP 6HP 8HP 10HP 12HP Maximum piping length between the outdoor unit and the farthest indoor unit Actual Length L1 7...

Page 80: ...7 pipe as a liquid pipe 6 In case of exceeding the recommended number of connected Indoor Units of 8 HP more than 5 Units please use a Ø12 7 pipe as a liquid Standard IVX Standard series Liquid Ø6 35 Ø9 52 Ø12 70 Ø15 88 Gas Ø9 52 Ø12 70 Ø15 88 Ø19 05 Ø12 70 Ø15 88 Ø19 05 Ø22 20 Ø25 40 Ø15 88 Ø19 05 Ø22 20 Ø25 40 Ø28 60 Ø22 20 Ø25 40 Ø28 60 Performance capacity m 3 HP 30 1 2 30 2 30 1 50 4 HP 5 2 5...

Page 81: ...re conditions than foreseen and will be damaged in a short space of time Select the piping connection sizes according to the following procedures Between outdoor unit and branch pipe Select the same pipe connection size as the pipe size of the outdoor unit Between branch pipe and indoor unit Select the same pipe connection size as the pipe size of the indoor unit 1 indoor unit system mm Outdoor Un...

Page 82: ...Multi kit model QE 812N1 it is not necesary the multi kit 2 F G mm Outdoor Unit HP Pipe Size A Multi kit 1 Gas Liquid IVX Premium Series IVX Standard Series 4 5 6 Ø15 88 Ø9 52 TW 52AN 4HP TE 04N1 5 6HP TE 56N1 8 Ø25 40 Ø9 52 1 TW 102AN TE 08N QE 812N1 2 10 Ø25 40 Ø12 70 TW 102AN TE 10N QE 812N1 2 mm Multikit Indoor Unit capacity Pipe Size D E F G Total Indoor Unit capacity after branch pipe 1 2 or...

Page 83: ...s Gas Liquid 3 4 5 6 Ø15 88 Ø9 52 E 102SN2 E 102SN2 E 102SN2 E 102SN2 8 Ø25 40 Ø9 52 1 E 162SN2 E 162SN2 E 102SN2 E 102SN2 10 12 Ø25 40 Ø12 70 E 162SN2 E 162SN2 E 102SN2 E 102SN2 1 In case that total pipe length from the outdoor to the farthest indoor unit exceeds of 70m in 8 HP unit please use a Ø12 7 pipe as a liquid pipe mm Indoor Unit capacity Pipe Size C Gas Liquid 1 5 HP Ø12 70 Ø6 35 1 8 2 0...

Page 84: ...ipe at the same height of indoor units or lower but never higher Indoor unit Indoor unit Height Difference between two indoors smaller than H m Smaller than 3 m Branch pipe O U HP H m Premium 2 3 3 4 12 10 Standard 3 12 3 Installing Distributor 1 Install the Distributor supplied by HITACHI on request A tee can not be installed instead of a branch pipe 2 Installing the distributor Fix the branch pi...

Page 85: ...ipe 4 Correct position of Triple Branch Pipe Standard series only Install the header horizontally Sample Triple Branch pipe Gas piping Liquid piping 3 3 7 Connecting flare adapter Flare nut accessories Pipe accessories Indoor unit Flare adapter accessories Gas line Pipe field supplield Liquid line The piping sizes for indoor unit and outdoor unit are different Attach the flare adapter accessories ...

Page 86: ...nect the gauge manifold using charging hoses with a nitrogen cylinder to the outdoor unit check joints of the liquid line and the gas line stop valves 2 Supply power to the indoor unit and switch the DSW1 2 ON of its PCB1 Thereby the indoor unit SV1 and SV2 open to allow the vacuum and refrigerant charge operation inside the indoor unit Very important to remind to switch the DSW1 2 OFF when finish...

Page 87: ...e of high pressure side and low pressure side changes by operation mode RAS 2 2 5 HVNP RAS 3HVNC RAS 3HVNPE RAS 4 6 H V NCE RAS 4 6 H V NPE RAS 8 10 HN P C E RAS 12HN P C C A C B A Cooling operation Heating operation Check joint for gas stop valve A Low pressure High pressure Check joint for piping B High pressure Low pressure Check joint for liquid stop valve C Exclusive for vacuum pump and refri...

Page 88: ...indoor units system 24 1 2 30 1 RAS 3HVNPE 2 3 40 1 2 30 RAS 4HVNPE 4 1 60 3 9 30 RAS 5HVNPE 4 2 60 3 9 30 RAS 6HVNPE 4 2 60 3 9 30 RAS 4HNPE 4 1 60 3 9 30 RAS 5HNPE 4 2 60 3 9 30 RAS 6HNPE 4 2 60 3 9 30 RAS 8HNPE 5 7 2 10 3 30 RAS 10HNPE 6 2 2 12 1 30 RAS 12HNP 6 7 2 12 1 30 IVX Standard series Model Refrigerant charge before shipment W0 kg Additional refrigerant charge P g m Maximum additional c...

Page 89: ...he formula for calculating the additional refrigerant charge is W1 L 20 x P Example A 30 m B 8 m C 8 m Chargeless Length ℓ for RAS 4HVNPE is 30 m according to the table before Additional Correction Value P for RAS 4HVNPE 60 accord ing to the table above Additional Charge amount W will be W L ℓ x P Example W1 46 30 x 60 960 g For UTOPIA units RAS 8 12 HN P C E The additional refrigerant charge for ...

Page 90: ... 1 6 RAS 10HN P C E 2 0 RAS 12HN P C 2 0 C A UTI ON Do not exceed the allowed maximum additional charge Step 4 Charging work Charge refrigerant R410A into the system according to the instructions in the Service Manual Step 5 Total refrigerant charge of the system WTOT kg The total refrigerant charge of this system is calculated by the following formula WTOT W W0 System example WTOT kg W0 is the ou...

Page 91: ...r outdoor unit relocation collect the refrigerant as follows 1 Attach the manifold gauge to the gas stop valve and the liquid stop valve 2 Turn ON the power source 3 Set the DSW1 1 pin of the outdoor unit PCB at the ON side for cooling operation Close the liquid stop valve and col lect the refrigerant 4 When the pressure at lower pressure side gas stop valve indicates 0 01 MPa 100 mmHg perform the...

Page 92: ...V m3 of each room 3 Calculate the refrigerant concentration C kg m3 of the room according to the following equation C R V R Total quantity of refrigerant charged kg V Room volume m3 C Refrigerant concentration 0 44 kg m3 for R410A 3 5 3 Countermeasure for refrigerant leakage The room must have the following features to prevent suffocation in case a refrigerant leakage occurs 1 Provide a shutterles...

Page 93: ...it is necessary additional refrigerant charge C A UTION Recovering R22 and R407C is mandatory to remove an existing air conditioner and piping Do not vent into the atmosphere 3 6 1 1 Conditions to use a existing pipes with cleaning process After the piping cleaning process follow the normal installation process as a new piping installed considering all the res trictions and limitations Special ate...

Page 94: ...nsion valve capacity 3 Increasing liquid pipe size will require additional refrigerant charge 4 When using Ø 19 05 gas pipe soft annealed please switch ON DSW2 4 in the Outdoor Unit PCB Standard IVX Standard series Liquid Ø6 35 Ø9 52 Ø12 70 Ø15 88 Thickness mm 0 8 0 8 0 8 1 0 Gas Ø9 52 Ø12 70 Ø15 88 Ø19 05 Ø12 70 Ø15 88 Ø19 05 Ø22 20 Ø25 40 Ø15 88 Ø19 05 Ø22 20 Ø25 40 Ø28 58 Ø22 20 Ø25 40 Ø28 58 T...

Page 95: ...S RAS 3HVNPE TRF NP160S RAS 3 6 H V NCE TRF NP160S RAS 4 6 H V NPE TRF NP160S TRF NP160U RAS 8HNPE TRF NP280U RAS 8HNCE TRF NP280U RAS 10 12 HNPE TRF NP335U1 RAS 10 12 HNC TRF NP335U1 Details of renewal kit Model Pipe TRF NP63S TRF NP160S For liquid pipe ȭ ȭ ȭ ȭ Pipe connecting port for O U Flare connection Pipe connecting port for I U Flare connection Flare connection ȭ ȭ ȭ ȭ Pipe connecting port...

Page 96: ...φ 25 4 Pipe connecting port for O U Pipe connecting port for I U Flare connection Brazing connection For gas pipe 314 130 φ38 1 φ9 52 φ 58 200 360 φ 25 4 Flare connection Pipe connecting port for O U Pipe connecting port for I U Brazing connection O U Outdoor Unit I U Indoor Unit Model Pipe TRF NP335U1 For liquid pipe 314 130 φ38 1 φ12 7 φ58 200 360 φ25 4 Pipe connecting port for O U Pipe connecti...

Page 97: ...ied pipes with insulation Strainer for liquid pipe with accessory insulation Put tape on insulation crossover Existing refrigerant pipes Put tape on insulation crossover Strainer for gas pipe with accessory insulation RAS 4 6 H V NPE RAS 8 10 HN P C E d c b a 46 96 42 81 Existing pipe Outlet on the rear side Strainer for gas pipe Existing refrigerant pipes for liquid Flare connection Strainer for ...

Page 98: ... Outlet on the rear side Strainer for gas pipe Strainer for liquid pipe Brazing connection Elbow connection Field Supplied Existing refrigerant pipe Brazing connection NO TE Sizes a to g depend on the outdoor unit model RAS 2 2 5 HVNP RAS 3HVNC RAS 4 6 H V NPE RAS 8HN P C E RAS 10HN P C E RAS 12HV P C a 22 26 581 596 578 580 b 109 103 491 497 497 521 c 129 127 329 282 264 266 d 229 137 137 161 e 4...

Page 99: ...s into the unit base up to the extruded portions 3 Size of the drain boss is For DBS 12L 15 mm O D For DBS 26 32 mm O D 4 A drain pipe should be field supplied NO TE Do not use this drain boss set in a cold area because the drain water may freeze This drain boss is not sufficient to collect all the drain water If collecting drain water is completely required provide a drain pan that is bigger than...

Page 100: ......

Page 101: ...cifications 101 4 5 3 DIP Switch setting for twin triple and quad systems 102 4 5 4 Examples of the system of connection between H LINK and H LINK II units 103 4 5 5 Examples of H LINK II system 104 4 6 System Control 106 4 6 1 Individual Operation 106 4 6 2 Simultaneous Operation 107 4 7 Electrical wiring diagrams 108 4 7 1 RAS 2 2 5 HVNP RAS 3HVNC 1 230V 50Hz 108 4 7 2 RAS 3HVNPE 1 230V 50Hz 109...

Page 102: ...ox Electrical wiring must comply with national and local codes Contact your local authority in regards to stan dards rules regulations etc D A NGE R Do not connect of adjust any wiring or connections unless the main power switch is OFF Use an earth leakage breaker with medium sensitivity and an activation speed of 0 1 sec or less If this is not fitted there is a risk of electric shock and or fire ...

Page 103: ...ual to xx see Ssc column at the interface point between the user s supply and the public system It is the responsibility of the installer or user of the equipment to ensure by consultation with the distribution network operator if necessary that the equipment is connected only to a supply with a short circuit power Ssc greater than or equal to xx see Ssc column MODEL Ssc xx KVA Installation restri...

Page 104: ...ure do not insert the cables from different sides into the ring core 1 N L2 Wire 2 L1 Wire 2 Connect the three phase power supply source wires L1 L2 L3 and N for 400V 50Hz or L1 and N for 230V 50Hz to the terminal board Connect the ground wire to the plate in the electrical box RAS 2 2 5 HVNP RAS 3HVNC RAS 8 10 HN P C E RAS 12HN P C Power wires PCB Earth terminal Side cover Transmis sion wires PCB...

Page 105: ...outdoor service cover Wiring Method Keep a distance between each wiring terminal and attach insulation tape or sleeve as shown in the figure Tape or sleeve Earth screw Rear cover Earth wire Power supply cable Control cable Wiring method with clamp 1 Insert the wires into the cord clamp and clamp them as shown in the figure 2 Perform wiring so that wires do not touch the compressor refrigerant pipe...

Page 106: ... Setting the DIP switches for the outdoor unit 4 3 1 Quantity and position of DIP switches The PCB in the outdoor unit is operating with DIP switches and push switches The location is as follows RAS 2 2 5 HVNP RAS 3HVNC PCB1 PCB2 RAS 3 12 H V N P C E ...

Page 107: ...HVNP and RAS 3HVNC units Test run mode Setting before shipment 1 2 3 4 5 6 ON Cooling Heating Forced stop of compressor DSW1 Only RAS 2 2 5 HVNP and RAS 3HVNC units No setting is required When set pin number 1 to ON the electric current detection is cancelled Pin number 1 should be set back to OFF after electrical work DSW1 RAS 3 12 H V N P C E For Test Run Factory setting Cooling Heating Cooling ...

Page 108: ...existing pipes Optional function setting 1 2 3 4 5 6 ON External input output setting mode DSW3 Capacity setting no setting is required Factory setting RAS 2HVNP RAS 2 5HVNP RAS 3HVNPE RAS 4HVN P C E 1 2 3 4 5 6 ON 1 2 3 4 5 6 ON 1 2 3 4 5 6 ON 1 2 3 4 5 6 ON RAS 5HVN P C E RAS 6HVN P C E RAS 4HN P C E RAS 5HN P C E 1 2 3 4 5 6 ON 1 2 3 4 5 6 ON 1 2 3 4 5 6 ON 1 2 3 4 5 6 ON RAS 6HN P C E RAS 8HN ...

Page 109: ... the second unit the pin number 1 of DSW5 at OFF If only one outdoor unit is used no setting is required Factory setting 1 2 ON Cancellation Setting of end terminal resistance 1 2 ON NO TE Setting for transmission It is required to set the outdoor unit number refrigerant cycle and end terminal resistance for the H LINK In the same refrigerant cycle set the same refrigerant cycle number for the out...

Page 110: ...red Optional function setting For individual operation factory setting 1 2 ON For simultaneous operation 1 2 ON Set pin number 1 at OFF for simultaneous operation Basic Combinations In the case of Twin Combination Remote Control Line Operating Line Remote Control Line Operating Line Remote Control Line Operating Line Individual Control Running ON OFF Individually Thermo ON OFF Individually Individ...

Page 111: ...to 220V power source voltage JP2 415V power source voltage When JP2 is set to open changes value of current protection etc to 415V power source voltage However in single phase units it becomes 200V power source voltage JP3 380V power source voltage When JP3 is set to open changes value of current protection etc to 380V power source voltage However in single phase units it becomes 200V power source...

Page 112: ...ted from a single power source line The recommended breaker sizes are detailed in the Wire size section In the case that a conduit tube for field wiring is not used fix rubber bushes with adhesive on the panel All field wiring and equipment must comply with local and international codes H LINK twist pair shielded cable must be grounded in the outdoor unit side C A U TION Take care with the connect...

Page 113: ...PE RAS 4HVNPE 6 0 mm2 RAS 5HVNPE RAS 6HVNPE RAS 4HNPE 3N 400V 50Hz 2 5 mm2 RAS 5HNPE RAS 6HNPE RAS 8HNPE 6 0 mm2 RAS 10HNPE RAS 12HNP IVX Standard Series RAS 3HVNC 1 230V 50HZ 4 0 mm2 0 75 mm RAS 4HVNCE 6 0 mm2 RAS 5HVNCE RAS 6HVNCE RAS 4HNCE 3N 400V 50Hz 4 0 mm2 RAS 5HNCE RAS 6HNCE RAS 8HNCE 6 0 mm2 RAS 10HNCE RAS 12HNC NO TE Follow local codes and regulations when selecting field wires Circuit b...

Page 114: ...A CB A ELB RAS 2HVNP 12 0 16 2 40 30 RAS 2 5HVNP 14 0 20 RAS 3HVNPE 19 0 20 RAS 4HVNPE 28 0 32 RAS 5HVNPE 28 0 32 RAS 6HVNPE 28 0 32 RAS 4HNPE 11 5 15 4 40 30 RAS 5HNPE 11 5 15 RAS 6HNPE 13 5 15 RAS 8HNPE 24 0 30 RAS 10HNPE 24 0 30 RAS 12HNP 24 3 30 IVX Standard series Outdoor unit MC A CB A ELB RAS 3HVNC 16 0 20 2 40 30 RAS 4HVNCE 28 0 32 RAS 5HVNCE 28 0 32 RAS 6HVNCE 28 0 32 RAS 4HNCE 15 0 20 4 ...

Page 115: ...EB is a centralized control system which allows the installation to be controlled remotely It can be connected at any point of the local corporate network or even via the Internet 4 5 2 Specifications A outdoor unit B indoor unit C refrigerant cycle D transmission cables E refrigerant piping A refrigerant cycle Outdoor unit Indoor units Transmission cables Refrigerant piping Cable features Transmi...

Page 116: ...e impedance of the transmission circuit adapted Example of the setting of the DIP switches A B C D E F E G H F I J A Cycle No 0 B Cycle No 1 C Cycle No 2 D Terminal resistance E No of refrigerant cycle setting for the tenth digit F No of refrigerant cycle setting for the last digit G Outdoor units H Indoor units I Address of the indoor unit setting for the tenth digit J Address of the indoor unit ...

Page 117: ...dress Set the DSW6 and RSW1 not to overlap the setting of other indoor units in the same refrigerant cycle If no set the automatic address function is perfor med 4 5 4 Examples of the system of connection between H LINK and H LINK II units In the case of mixed systems with H LINK and H LINK II set the H LINK units in the first 16 position of the system as in the following example where 42 systems ...

Page 118: ...em for air conditioning systems without a central control device CSNET WEB or PSC A64S Line connection with all units including Utopia and or Set Free Mini Set Free and DC Inverter A B C A Outdoor units B Indoor units C Do not install wiring in a loop Line connection for each floor A A Outdoor units B Indoor units ...

Page 119: ...e instrument is completed The DIP switches must therefore be set as specified in the DIP switches on the PCB 2 Using the H LINK II system for air conditioning systems with a central control device CSNET WEB or PSC A64S If the central control device is used when carrying out electrical wiring the CS NET WEB can be connected at any point of the H LINK II wiring A A Outdoor units B Indoor units If th...

Page 120: ...trol Switch PC ARF The transition wiring is required when operate multiple indoor units by one 1 remote control switch Control Method by each Optional Remote Control Switch Operation Method by One Group 1 ON OFF Yes 2 Setting of Operation Mode Yes 1 3 Room Temperature Setting Yes 4 Fan Speed Setting Yes 5 Timer Setting Yes 6 ON OFF by Timer Control Yes 7 Operation Indication Yes 8 Alarm Indication...

Page 121: ...s required Set DSW6 1 pin to OFF side for simultaneous operation Control Method by each Optional Remote Control Switch Operation Method by One Group 1 ON OFF Yes 2 Setting of Operation Mode Yes 1 3 Room Temperature Setting Yes 4 Fan Speed Setting Yes 5 Timer Setting Yes 6 ON OFF by Timer Control Yes 7 Operation Indication Yes 8 Alarm Indication Yes 9 Self Checking Yes 10 Test Mode Yes 11 Individua...

Page 122: ...4 Electrical wiring 108 SMGB0079 rev 0 01 2013 4 7 Electrical wiring diagrams 4 7 1 RAS 2 2 5 HVNP RAS 3HVNC 1 230V 50Hz RAS 2 5HVNP RAS 2HVNP RAS 3HVNC 317S139290 317S139291 317S139294 ...

Page 123: ...4 Electrical wiring 109 SMGB0079 rev 0 01 2013 4 4 7 2 RAS 3HVNPE 1 230V 50Hz U Surface V Surface W Surface XEK01261_0 ...

Page 124: ...4 Electrical wiring 110 SMGB0079 rev 0 01 2013 4 7 3 RAS 4 6 HVNPE 1 230V 50Hz U Surface V Surface W Surface XEK01262_0 ...

Page 125: ...4 Electrical wiring 111 SMGB0079 rev 0 01 2013 4 4 7 4 RAS 4 6 HNPE 3N 400V 50Hz U Surface V Surface W Surface XEK01263_1 ...

Page 126: ...4 Electrical wiring 112 SMGB0079 rev 0 01 2013 4 7 5 RAS 4 6 HVNCE 1N 230V 50Hz U Surface V Surface W Surfac 4HP 5 6HP 4HP 5 6HP U Surface V Surface W Surface 4HP 5 6HP 4HP 5 6HP XEK01264_2 ...

Page 127: ...4 Electrical wiring 113 SMGB0079 rev 0 01 2013 4 4 7 6 RAS 4 6 HNCE 3N 400V 50Hz U Surface V Surface W Surface 4HP 5 6HP 5 6HP 4HP 4HP 5 6HP 5 6HP 4HP XEK01265_1 ...

Page 128: ...4 Electrical wiring 114 SMGB0079 rev 0 01 2013 4 7 7 RAS 8 10 HN P C E 3N 400V 50Hz XEK01288_0 ...

Page 129: ...4 Electrical wiring 115 SMGB0079 rev 0 01 2013 4 4 7 8 RAS 12HNP 3N 400V 50Hz Preliminary data 317S136064 ...

Page 130: ...4 Electrical wiring 116 SMGB0079 rev 0 01 2013 4 7 9 RAS 12HNC 3N 400V 50Hz Preliminary data 317S136071 ...

Page 131: ... 1 Cooling operation 128 5 4 2 Dry operation 130 5 4 3 Heating operation 132 5 4 4 Automatic cooling and heating operation 134 5 4 5 Defrost operation control 135 5 5 Standard control functions 138 5 5 1 Freezing protection during cooling process or dry operation 138 5 5 2 Prevention Control for High Pressure Increase during Cooling Operation 139 5 5 3 Prevention control for excessively high disch...

Page 132: ... Specified opening degree at normal control starting After ward controlled to optimize I U liquid pipe temp Tl The expansion valve opening degree is controlled according to the number of connected I U for individual operation Specified opening degrees control led by temp on the top of compres sor Td Outdoor fan control Fan step is operated for O U liquid pipe temp Te stabiliza tion control Fan Ste...

Page 133: ...pansion valve drive circuit Transmission circuit Transmission circuit Protection circuit Fan control Indoor unit MCU Transmission circuit Relay drive circuit Electrical control expansion valve drive circuit Remote control MCU Remote control switch CH1 MV MOF1 RVR SVA B F MOF2 MV MS MIF Indoor unit Outdoor unit Multiple signals Single signals Operation signals To the transmission of the next indoor...

Page 134: ...iliary function setting DSW3 Capacity code DSW4 RSW1 Refrigerant cycle number DSW5 Switch DSW6 Switch PSW2 Available optional function Setting can be se lected using the 7 segment display PSW3 PSW351 The inverter micro computer checking PCB1 LED indication LED Colour Name LED1 Red Power source for the PCB LED2 Green This LED indicates the transmission status between the indoor unit and the RCS LED...

Page 135: ...A Micro electronic expansion valve CN6 Transmission between PCB and DIP IPM CN8 Transmission from outdoor to indoor unit CN100 Discharge pressure Pd CN404 Line connection between PCB and DIP IPM CN406 Motor for fan EF1 2 3 EFR1 Power protection Switch indication DSW1 Test run DSW2 Auxiliary function setting DSW3 Capacity code DSW4 RSW1 Refrigerant cycle number DSW5 Switch DSW6 Switch LED indicatio...

Page 136: ...A Micro electronic expansion valve CN6 Transmission between PCB and DIP IPM CN8 Transmission from outdoor to indoor unit CN100 Discharge pressure Pd CN404 Line connection between PCB and DIP IPM CN405 Motor for fan 2 CN406 Motor for fan 1 EF1 2 3 EFR1 Power protection Switch indication DSW1 Test run DSW2 Auxiliary function setting DSW3 Capacity code DSW4 RSW1 Refrigerant cycle number DSW5 Switch D...

Page 137: ...or THM10 Compressor suction temperature thermistor CN5A Micro electronic expansion valve CN6 Transmission between PCB and DIP IPM CN8 Transmission from outdoor to indoor unit CN404 Line connection between PCB and DIP IPM CN406 Motor for fan EF1 2 3 EFR1 Power protection Switch indication DSW1 Test run DSW2 Auxiliary function setting DSW3 Capacity code DSW4 RSW1 Refrigerant cycle number DSW5 Switch...

Page 138: ... CN100 Discharge pressure Pd CN102 Line connection between PCB1 and PCB3 CN404 Line connection between PCB1 and PCB3 CN405 Motor for fan 2 CN406 Motor for fan 1 EF1 2 3 EFR1 Power protection PCB1 Switch indication Connector Name DSW1 Test run DSW2 Auxiliary function setting DSW3 Capacity code DSW4 RSW1 Refrigerant cycle number DSW5 Switch DSW6 Switch PCB1 LED indication LED Colour Name LED1 Red Po...

Page 139: ...r THM9 Compressor discharge temperature thermistor CN5A Micro electronic expansion valve CN6 Transmission between PCB and DIP IPM CN8 Transmission from outdoor to indoor unit CN100 Discharge pressure Pd CN404 Line connection between PCB and DIP IPM CN406 Motor for fan 1 EF1 3 EFR1 2 Power protection Switch indication DSW1 Test run DSW2 Auxiliary function setting DSW3 Capacity code DSW4 RSW1 Refrig...

Page 140: ...Compressor discharge temperature thermistor THM10 Compressor suction temperature thermistor CN5A Micro electronic expansion valve CN6 Transmission between PCB and DIP IPM CN8 Transmission from outdoor to indoor unit CN404 Line connection between PCB and DIP IPM CN406 Motor for fan 1 EF1 2 3 EFR1 Power protection Switch indication DSW1 Test run DSW2 Auxiliary function setting DSW3 Capacity code DSW...

Page 141: ... the setting only for some RPI models Safety and control device setting for the outdoor units Model RAS 2 2 5 HVNP RAS 3HVNC RAS 3HVNPE RAS 4 6 HVN P C E RAS 4 12 HN P C E For com pressor Pressure Switches Automatic Reset Non Adjustable each one for each compressor 0 05 0 05 0 05 0 05 High Cut Out MPa 4 15 4 15 4 15 4 15 0 15 0 15 0 15 0 15 Cut In MPa 3 20 0 15 3 20 0 15 3 20 0 15 3 20 0 15 For fu...

Page 142: ...ev 0 01 2013 5 4 Standard operation sequence 5 4 1 Cooling operation 75ºC 75ºC RAS 2 2 5 HVNP RAS 3HVNC for 60ºC RAS 2 2 5 HVNP RAS 3HVNC for 60ºC 12HN P C 25ºC 15ºC 25ºC 15ºC Power to Y52C or RY ON 1 1 15 Continues in the next page ...

Page 143: ...5 Control System 129 SMGB0079 rev 0 01 2013 5 RAS 2 2 5 HVNP RAS 3HVNC for 60ºC Td target temp 10ºC RAS 2 2 5 HVNP RAS 3HVNC for 60ºC Td target temp 15ºC Power to Y52C or RY ON 1 COOL ...

Page 144: ...5 Control System 130 SMGB0079 rev 0 01 2013 5 4 2 Dry operation Continues in the next page ...

Page 145: ...5 Control System 131 SMGB0079 rev 0 01 2013 5 RAS 2 2 5 HVNP RAS 3HVNC for 60ºC Td target temp 10ºC RAS 2 2 5 HVNP RAS 3HVNC for 60ºC Td target temp 15ºC Power to Y52C or RY ON 1 DRY 3 ...

Page 146: ...ºC RAS 2 2 5 HVNP RAS 3HVNC for 60ºC RAS 2 2 5 HVNP RAS 3HVNC for 60ºC 12HN P C 25ºC 15ºC 25ºC 15ºC 15 1ºC in Power to Y52C or RY ON 1 with Thermo OFF Low fan speed MOF IU demand frequency 90Hz 90Hz Power to YH2 OFF Power to YH2 ON After 3 to 48 sec Continues in the next page ...

Page 147: ...stem 133 SMGB0079 rev 0 01 2013 5 RAS 2 2 5 HVNP RAS 3HVNC for 60ºC Td target temp 10ºC RAS 2 2 5 HVNP RAS 3HVNC for 60ºC Td target temp 15ºC Power to Y52C or RY ON 1 IU Air outlet temperature Higher than 50ºC HEAT ...

Page 148: ...5 Control System 134 SMGB0079 rev 0 01 2013 5 4 4 Automatic cooling and heating operation ...

Page 149: ...01 2013 5 5 4 5 Defrost operation control Power to YH2 ON After 30 seconds After 90 seconds DSW2 1 ON and DSW2 2ON for RAS 2 5HVNP RAS 2 2 5 HVNP RAS 3HVNC Other than above IU demand frequency 90Hz 90Hz Power to YH2 OFF Power to YH2 ON N ...

Page 150: ...n Model RAS 2 2 5 HVNP RAS 3HVNC RAS 3HVNPE RAS 4 12 H V N P C E Temperature condition under defosting ope ration 4 b Condition for Operating Time of Defrost Operation Start The defrosting operation is started when the temperature condition is met a Temperature Condition after the heating operation is performed for 40 to 120 minutes The heating operation time is determined by estimating the amount...

Page 151: ... evaporating temperature becomes more than 15o C 2 the outdoor temperature 10o C after passing 2 minutes from starting the defrosting operation 3 The outdoor evaporating temperature becomes more than 5o C the outdoor temperature 10o C after passing 2 minu tes from starting the defrosting operation 4 The pressure switch for control is ON 5 More than 9 minutes 3 are passed after starting the defrost...

Page 152: ...5 Control System 138 SMGB0079 rev 0 01 2013 5 5 Standard control functions 5 5 1 Freezing protection during cooling process or dry operation Cooling or Dry Operation Cooling or Dry Operation ...

Page 153: ...be 13 during Thermo OFF RAS 2 2 5 HVNP RAS 3HVNC 1 Y52C is turned ON during the cooling operation or RY1 is turned ON during the compressor operation 2 Pressure switch for control is turned ON ON 3 6MPa OFF 2 85MPa 3 Outdoor liquid pipe temperature 55ºC RAS 4 12 H V NC E 1 Y52C is turned ON during the cooling operation or RY1 is turned ON during the compressor operation 2 Pressure switch for contr...

Page 154: ...5 Control System 140 SMGB0079 rev 0 01 2013 5 5 3 Prevention control for excessively high discharge gas temperature 60ºC 60ºC CMC ON 35ºC 35ºC IU demand frequency 90Hz Heater control for Indoor Unit N N ...

Page 155: ...5 Control System 141 SMGB0079 rev 0 01 2013 5 5 5 4 Activation for protection device control N N Blow EHW fuse Current of the EHW circuit 10A or 20A ...

Page 156: ... System 142 SMGB0079 rev 0 01 2013 5 5 5 Preheating control of compressor RAS 2 2 5 HVNP RAS 3HVNC During stopping and operating compressor Other than above During stopping compressor During operating compressor ...

Page 157: ...eased by a sea sonal wind against air outlet When the CMC is ON during cooling operation PSC is ON and Tc is higher than Tc1 4 C forced thermo off operation will be performed Tc Outdoor piping temperature Tc1 Outdoor piping temperature when PSC is ON PSC ON 3 60 MPa However if it occurs more than 6 times during operation forced thermo off operation will not be performed Cause of stop page will be ...

Page 158: ......

Page 159: ...146 6 1 1 Available ports 146 6 1 2 Available optional signals 148 6 1 3 Setting of the optional signals 150 6 1 4 Description of optional signals 151 6 2 Optional functions By 7 segment display 154 6 2 1 Setting of the optional functions 154 6 2 2 Description of the optional functions 157 6 3 Optional functions By remote control switch 161 ...

Page 160: ... optional output signals The selection of these input and output signals represent the selection of some optional functions programmed in the PCB of the outdoor unit 6 1 1 Available ports The system has the following input and output ports Content Setting of the port in the PCB of the indoor unit Remarks Outlet Inputs i1 1 2 of CN1 Contact i2 2 3 of CN1 Contact i3 1 2 of CN2 Contact Outputs o1 1 2...

Page 161: ...nnector Five wires with connectors as one set Wire control Voltage 12V DC 0 5 mm Wire power Voltage 230V 2 0 mm NO TE The connection of the input signal is only an example Keep the CN1 and CN2 wires as short as possible Do not run the wires along 230 V 400 V CA power cables separately install them at a distance of more than 30cm The cables may intersect If you install the wires along a power suppl...

Page 162: ...als of the fire prevention systems CN1 and CN2 5 Current control demand 60 This signal allows to regulate current consumption and establish an average consumption of 60 of the rate point This is very useful for installations that run 24 hours a day CN1 and CN2 6 Current control demand 80 This signal allows to regulate current consumption and establish an average consumption of 80 of the rate point...

Page 163: ...sh an average consumption of 60 of the rate point This is very useful for installations that run 24 hours a day CN1 and CN2 7 Current control demand 70 This signal allows to regulate current consumption and establish an average consumption of 70 of the rate point This is very useful for installations that run 24 hours a day CN1 and CN2 8 Current control demand 80 This signal allows to regulate cur...

Page 164: ... By pressing the push switches PSW2 and PSW3 it can be changed the input output terminal name See the flowchart show in the side 3 By pressing the push switch PSW1 it can be changed the function number See the flowchart show in the side 4 After selecting the function number return pin 6 of DSW2 to OFF position and pin 4 of DSW1 to OFF The selected contents are memorized in the outdoor unit printed...

Page 165: ...ed on the outdoor units are stopped completely and the indoor units go into thermo OFF Alarm 10 is displayed on the remote control If the switch of this function is disconnected it becomes available again Connect the cabling and use the materials as shown in Available ports 3 Forced stoppage 4 This is an input function that turns on when the switch receives a signal that causes the compressor and ...

Page 166: ...e stopped completely and the indoor units go into thermo OFF Alarm 10 is displayed on the remote control If the switch of this function is disconnected it becomes available again Connect the cabling and use the materials as shown in Available ports 3 Forced stoppage 5 This is an input function that turns on when the switch receives a signal that causes the compressor and the fan motor of the indoo...

Page 167: ...he contact of auxiliary relay X3 is closed when an operation signal is issued Compressor on signal 03 This optional signal is used to pick up the signal when the compressor is ON It can be used to check how the compressor is running at all times It is very useful for locking the compressor when the fans are locked Connect the cabling and use the materials as shown in Available ports Note that the ...

Page 168: ... settings the optional function selection mode becomes available and the following indication appears on the 7 segment display F A 1 Optional function Availability This example indicates that optional function Control of the indoor unit fan during Thermo OFF in heating mode is available 2 By pressing the push switches PSW2 and PSW3 it can be changed the optional function See the flowchart show in ...

Page 169: ...le Not prepared SC 0 Not Available 1 Available SEG2 SEG1 Indoor exp valve ope ning change for stoppa ge indoor unit in heating mode 1 or 2 for 3 to 12HP Si 0 Not Available 1 2 Available Indoor exp valve opening change for Thermo OFF indoor unit in heating mode 1 2 for 3 to 12HP So 0 Not Available 1 2 Available Indoor exp valve initial opening of indoor unit in heating mode 1 or 2 for 3 to 12HP ci ...

Page 170: ... 1 Available Compressor frequency control target value for heating Hh 0 Not Available 1 Available Not prepared SC 0 Not Available 1 Available SEG2 SEG1 Not prepared Si 0 Not Available 1 2 Available Indoor exp valve opening change for Thermo OFF indoor unit in heating mode 1 mode 2 not prepared So 0 Not Available 1 2 Available Not prepared ci 0 Not Available 1 2 Available Low noise setting db 0 Not...

Page 171: ...for 6 minutes in 2 minute cycles Fan Motor Operation 2 min Fan Motor Stop 6 min 2 min 6 min NO TE When the indoor fan is stopped by another control it is not available to operate indoor fans Night mode Low noise ni Press PSW1 and select the setting condition 1 at the night shift low noise ni Then this function can be set only in cooling operation The outdoor fan operation is controlled by fan cont...

Page 172: ... the unit will be under Termo OFF Ta 23o C and Pd 3 7 MPa Ta 21o C Ti 26o C and Pd 3 7 MPa Ta 15o C Ti 29o C and Pa 3 7 MPa Cooling Operation If the following condition is continued for 1 second the unit will be under Termo OFF Ta 7o C Ta Outdoor Ambient Temperature Ti Indoor Air Inlet Temperature Pd Discharge Pressure N OTE If this function is set and the outdoor unit operates in the stoppage are...

Page 173: ...ng setting nU If cooling capacity or heating capacity is not enough under the long distance piping condition this function can be set the target compressor frequency higher than normal target value Wave function setting UE Press PSW1 and select the setting condition 1 so that the wave function setting UE While this function is activated the maximum limit of running current is changed from 60 to 10...

Page 174: ...i1 i2 and i3 In case that multiple demand functions are set at the input terminal indicationsi1 i2 and i3 the demand running current is selected as below 6 7 8 9 Control function number Demand Control Adopting self demand function which drastically decreases power consumption has largely improved energy saving Power setting Selectable from 100 80 70 and 60 of the rated power consumption for coolin...

Page 175: ...ting Setting condition Contents b1 Removal of heating temperature compensation 00 Standard Set temperature 4ºC 01 Removal Set temperature 02 Set temperature 2ºC 1 b2 Circulator function at heating Thermo OFF 00 Not available 01 Available b3 3 minutes OFF guard compressor 00 01 Not available Available b4 Period for filter sign 00 Standard 01 100 hours 02 1 200 hours 03 2 500 hours 04 No indication ...

Page 176: ... suction thermistor and thermistor of remote control switch C9 Not prepared Fixed Not used CA Not prepared Fixed Not used Cb Selection of forced stoppage logic 00 Forced stoppage input A contact 01 Forced stoppage input B contact CC Not prepared 00 Not used 01 Use as 00 conditions Cd Not prepared 00 Not used 01 Use as 00 conditions CE Not prepared 00 Not used 01 Use as 00 conditions CF Change of l...

Page 177: ... 02 60 minutes Econofresh gas sensor 00 Standard 01 02 CO2 sensor E5 Not Prepared 00 Not used 01 Use as 00 conditions E6 Indoor fan operation time after cooling operation stoppage 00 Not available 01 60 min 02 120 min E7 Not prepared 00 Not used 01 Use as 00 conditions E8 Fan operation control at heating Thermo OFF 00 Not available 01 Available E9 Not prepared 00 Not used 01 Use as 00 conditions E...

Page 178: ...cooling temperature release 4 19 19 ºC 20 20 ºC 21 24 21 24 ºC 25 25 ºC Factory setting 26 28 26 28 ºC 29 29 ºC 30 30 ºC F6 Automatic heating temperature release 5 19 19 ºC 20 20 ºC 21 24 21 24 ºC 25 25 ºC Factory setting 26 28 26 28 ºC 29 29 ºC 30 30 ºC F7 Prevention of operation stoppage due to re mote control operating error 6 00 Not available 01 Available F8 Lock function for operation mode se...

Page 179: ...vailable 01 Use as 00 condition H2 Indication of hot start 00 Show 01 Hide H3 Not prepared 00 Not available 01 Use as 00 condition H4 Not prepared 00 Not available 01 Use as 00 condition H5 Not prepared 00 Not available 01 Use as 00 condition J1 Temperature indication 7 x 00 Not available 01 Available J2 Not prepared 00 Not available 01 Use as 00 condition J3 Run indicator color 00 Green 01 Red J4...

Page 180: ... is applied within upper and lower limit for the set temperature 4 Applicable to fan cooling and dry operation modes 5 Applicable to heating operation mode 6 Operation is stopped by pressing the run stop switch for 3 seconds 7 The sensor value at C8 will be indicated When the thermistor for remote control switch is used the average value of the thermistor for remote control switch and the thermist...

Page 181: ...mote control switch PC ART 170 7 3 Test run procedure using the remote control switch PC ARF 172 7 4 Test run procedure using the wireless remote control switch PC LH3A B 175 7 5 Test run procedure from the outdoor unit side 177 7 6 Check list 179 7 6 1 Check list on test run 179 7 6 2 Check list on compressor 180 7 Te s t r un ...

Page 182: ...1 DSW6 and RSW1 of indoor units correspond to the system 4 Make sure that the setting of the DIP switches on the printed circuit board of the indoor units and the outdoor units are correct Especially pay attention to the setting of the lift between the indoor units and the outdoor units Refer to chapter 4 Electrical Wiring for details 5 Make sure that the switch on the main power source has been O...

Page 183: ... exist 2 If the resistance is under 1 MΩ remove compressor cables from the inverter PCB and turn the power ON and energize the oil heater Measure the resistance after more than three hours of electric current application If the insulation resistance recovers the compressor does not have problems In case that the resistance does not reco ver compressor failure may exist More time may be required to...

Page 184: ...ion order of each terminal board 4 Screw fastening of each terminal boards Counting number of connected units is incorrect The power source of outdoor unit is not turned ON The operating line wiring between indoor unit and outdoor unit is not connected The connection of control cables between each indoor units are incorrect When one remote control switch controls multiple units 5 Dip switch settin...

Page 185: ... The unit does not start Remote control cable is broken Contact of connectors is not good The connection of remote control cable is incorrect This is the same as item 1 and 2 Indication of flicker ex cept above The unit does not start or start once and then stops The connection of ther mistor or other connec tors are incorrect Trip ping of protector exists or else Check by the abnormality mode tab...

Page 186: ...he heat pump type models Operation Guide Indicator Central Control is indicated while the remote control operation is prohibited Room Name Indicator Operation Part Setting Temperature Indicator Help Switch To display Help Menu Return Switch To return to the previous screen Menu Switch To display Menu 1 Turn ON the power supply for all the indoor units 2 For the models with the auto address functio...

Page 187: ...ly for indoor unit is not turned ON or incorrect wiring Incorrect connectionn of connecting cable between indoor u nits or incorrect connection of controller cable Incorrect setting of rotary switch and dip switch the setting is overlapped on the indoor units PCB d Press run stop to start the test run e Press and set each item 5 Press run stop Start the test run when indicatin the air flow volume ...

Page 188: ...model code and connected number of indoor units will be displayed on the LCD as shown in the figure below If the RUN indicator on PC ARF flashes 2 seconds ON 2 seconds OFF it may be a failure in the transmission between the indoor unit and the remote control switch loosening of connector disconnecting wiring or breaking wire etc In this case check the item 8 3 Alarm Code and perform for troublesho...

Page 189: ...riefly Make sure that the commands are received well and the selected mode 3 is set correctly In the TEST RUN mode the red RUN LED of the receiver is turned ON and the green TIMER LED flickers 0 5 seconds ON 0 5 seconds OFF 2 Then the timer switches off for two hours NO TE If the yellow LED does not turn ON the commands from the remote control switch may not have reached the receiver Send the comm...

Page 190: ... the green DEF LED and the yellow FILTER LED as shown bellow Green DEF LED Digit 2 of the alarm code blinks Yellow FILTER LED Digit 1 of the alarm code blinks Alphabet code A 10 blinks B 11 blinks C 12 blinks etc Example Yellow FILTER LED Green DEF LED DEF LED blinks three times 0 5 seconds ON 0 5 seconds OFF FILTER LED blinks 5 times 0 5 seconds ON 0 5 seconds OFF Alarm code The red RUN LED 1 sec...

Page 191: ... without Thermo OFF NOT E TEST RUN operation time can be increased depressing the time switch in the Remote Control If is setting DSW1 3 ON cooling heating intermediate season mode is activaded Take care that the indoor units start operation in accord with the test run operation of the outdoor unit The test run is started from the outdo or unit and stopped from the remote control switch the test r...

Page 192: ...efrost operation is automatica lly ended and the heating opera tion is started Defrost operation is available regar dless of frosting condition and total time of heating operation Defrost operation in not performed when the temperature of outdoor heat exchanger is higher than 10 C high pressure is higher than 3 3 MPa 33kgf cm2 G or Thermo OFF Do not repeat defrost operation fre quently N OT E In c...

Page 193: ...oor ambient temperature Inlet DB____ C WB ____ C Outlet DB____ C WB ____ C 7 Check the refrigerant temperature Operating mode cool or heat Discharge gas temperature Td _____ C Liquid pipe temperature Te _____ C 8 Check the pressure Discharge pressure Pd _____kg cm2 G Suction pressure Ps _____kg cm2 G 9 Check the voltage Rated voltage _____V Operating voltage L1 L2______V L1 L3______V L2 L3______V ...

Page 194: ...inser ted 7 Is exp valve MV1 correctly con nected Check to ensure that MV1 to CN5A is correctly connected 8 Is exp valve MV1 coil correctly connected Check to ensure that each coil is correctly mounted on the valve 9 Are the refrigeration cycle and electrical wiring system incorrectly connected Check to ensure that refrigerant is flowing into indoor units by operating one refrigerating cycle only ...

Page 195: ...ontrolled by MV of each indoor units During a heating operation Td is controlled by MV1 If expansion valves are incorrectly connected correct control is not available resulting in compressor seizure depending on liquid refrigerant returning conditions or motor winding insulation failure de pending on overheating conditions 9 If the refrigeration cycle and electrical system are incorrectly connecte...

Page 196: ......

Page 197: ...door and indoor units 194 8 2 4 Alarm codes for the KPI E H X 3E Series and DX Interface 252 8 3 Troubleshooting in check mode 253 8 3 1 Troubleshooting using the remote controller PC ART 253 8 3 2 Troubleshooting using the remote controller PC ARF 263 8 3 3 Troubleshooting using the 7 segment display 268 8 4 Checking procedure for main parts 277 8 4 1 Procedure for checking the DIP IPM inverter f...

Page 198: ...Unit Disconnection of the operating line between the outdoor and the indoor units Duplication of the Indoor Unit number Normal case The 7 segment display of the outdoor unit is not indicated Abnormal case If there is something wrong the 7 segment display of the outdoor unit displays the following indications Cause Indication Remarks A The indoor units are not supplied with power 03 continues to fl...

Page 199: ...circuit to earth Measure the insulation resistance Remove the cause of the short circuit and replace the fuse Failure of indoor unit fan motor Measure the insulation resistance Remove the cause of the short circuit and replace the fuse Failure of the transformer at the indoor unit side Measure the voltage at the sec ondary side Replace the transformer Disconnected cable of the remote control switc...

Page 200: ...ction Turn OFF the main switch RUN LED is ON and the LCD is indicated However the system does not operate For example the indoor fan the outdoor fan or the compressor does not operate Failure of the indoor unit fan motor Disconnected coil Measure the coil resistance by means of the tester Replace the Indoor unit fan motor Burnt out coil Measure the insulation resist ance Failure of the outdoor uni...

Page 201: ...peed does not change Failure of the Discharge Air Temp Thermistor Failure of the Thermis tor Check the Thermistor by means of the self check mode 2 Replace or Correctly connect the wiring when it is abnormal Disconnected Wire of the Thermistor Failure of the Remote Control Switch Check it by means of the self check mode 1 Replace if it failed Failure of PCB for the indoor unit Replace if PCB fails...

Page 202: ...ng Remove the clogging Check the connection cord and the connector Replace the connector Is there an operation sound from the coil Replace the coil Is the thermistor on the com pressor normal Replace the thermistor Is the thermistor installed cor rectly on compressor Correctly install the thermistor Clogged strainer in the indoor unit clogging at the low pressure piping Check the temp difference a...

Page 203: ...e refrigerant after the vacuum pumping Clogging of the dis charge piping Check for clogging Remove the clogging Failure or malfunction of the expansion valve Check for clogging Remove the clogging Check the connection cord and the connector Replace the connector Is there an operation sound from the coil Replace the coil Is the thermistor on the com pressor normal Replace the thermistor Is the ther...

Page 204: ...e the fan motor Excessively low air temp through the outdoor unit heat ex changer Check for any short circuited air to the outdoor unit Remove the cause of the short circuited air Defrosting is insuffi ciently completed Check the thermistor for the defrost operation Replace the thermistor for the defrost operation Excessively high dis charge pressure Insufficient air flow to the indoor unit heat e...

Page 205: ...pressor operates Obstacle at the outdoor fan Check the obstacles Remove the obstacles Watching condition for the heating process Wait for the switching of the 4 Way Valve 1 3 minutes If the 4 Way Valve does not switch check for insufficient refrigerant Indoor fan does not operate when the com pressor operates Discharge pressure does not increase higher than 1 5 Mpa due to the insufficient refriger...

Page 206: ...ier Power supply failure All displays disappear If the unit stops due to a power shortage it will not start again even though the power comes back on Carry out the start up operations again If the power failure lasts less than 2 sec onds the unit will start again automatically Electrical noise The displays can disappear from the screen and the unit can stop This is because the microcomputer has be...

Page 207: ...uit in outdoor unit Failure of indoor unit PCB incorrect wiring connection to indoor unit PCB 41 Pressure Cooling overload possible activation of high pressure device O U pipe thermistor temp is higher than 55 ºC and the compressor top temp is higher than 95 ºC O U protection device is activated 42 Heating overload high pressure device may be activated If I U freeze protection thermistor temp is h...

Page 208: ...tivation of Float Switch FS or Incorrect Wiring Faulty I U PCB Yes No Indication of Outdoor Unit PCB Indoor Unit No for Malfunction Alarm Code Phenomenon Cause Check item Action Turn OFF the main switch Activation of the float switch High Drain Level Clogging of the drainage Check the drain pan Remove the clogged foreign particles Faulty float switch Fault Check the continuity when the drain level...

Page 209: ...displayed on the set temperature section The unit number and the alarm code are displayed on the display of the outdoor unit PCB This alarm is indicated when one of safety devices is activated during compressor running Model Cause RAS 2 2 5 HVNP RAS 3HVNC Faulty PCB RAS 4 6 H V NCE Faulty PCB IPM Other than above See next diagram Model PCB connector Pin RAS 2 2 5 HVNP RAS 3HVNC PCN401 PCB1 1 3 RAS...

Page 210: ...ide good circulation Check for short circuited air Heating Remove the short circuited air Check for other heat source Remove the heat source Faulty High Pressure Switch Faulty Pressure Switch Measure the discharge pressure Check the conti nuity after the decrease of the pressure Replace the pressure switch if faulty Insufficient Contacting Measure the resistance by means of the tester Fix the loos...

Page 211: ...splayed on the display of the outdoor unit PCB This alarm is displayed when an abnormal operation is maintained for three minutes after the normal transmission between the indoor units and the outdoor unit Also an abnormal operation is maintained for 30 seconds after the micro computer is automatically reset The alarm is displayed when the abnormal transmission is maintained for 30 seconds from th...

Page 212: ...8 Troubleshooting 198 SMGB0079 rev 0 01 2013 ...

Page 213: ...e resistance between the wires and the insulation resist ance Replace the outdoor unit fan motor and fuse PCB1 Power circuit failure PCB1 Measure output voltage 1 Replace PCB1 Disconnected wires insufficient contacting or incorrect connection Between outdoor unit and indoor unit Check the continuity of the wires Check for looseness of the con nection screws Check the terminal Nos Replacing wires r...

Page 214: ...ayed on the display of the outdoor unit PCB This alarm is displayed when an abnormal operation is maintained for three minutes after the normal transmission between the indoor units and the outdoor unit Also an abnormal operation is maintained for 30 seconds after the micro computer is automatically reset The alarm is displayed when the abnormal transmission is maintained for 30 seconds from the s...

Page 215: ...8 Troubleshooting 201 SMGB0079 rev 0 01 2013 8 ...

Page 216: ...rev 0 01 2013 Replacing Wires Repairing and Tightening Screws Correctly connect wires Check continuity and looseness of connection screws Check terminal Nos Incorrect Wiring Disconnected Wire Insufficient Contacting Incorrect Wiring ...

Page 217: ...Setting SW1 Item Setting Position SW1 Left Side for H LINK H LINK II 3 PCB1 output voltage Voltage Vcc 12 GND2 12 VDC Vcc 05 GND1 5 VDC Vcc 12 GND1 12 VDC Vcc 15 GND1 15 VDC Vcc 24 GND1 24 VDC Vcc 12T GND1 12 VDC 4 The rotary switch RSW2 is not available depending on the indoor unit model 5 Surely perform the troubleshooting of DC fan motor If DC fan motor fails the normal inverter PCB may be dama...

Page 218: ...t number and the alarm code are displayed on the display of the outdoor unit PCB This alarm is displayed when the abnormal operation is maintained for 30 seconds after the normal transmission between the outdoor unit PCB1 and inverter PCB2 Also the abnormal operation is maintained for 30 seconds after the micro computer is automatically reset The alarm is displayed when the abnormal transmission i...

Page 219: ...vention R115 R116 fails the abnormal transmitting occurs 2 Surely perform the troubleshooting of DC fan motor according to section Procedure of checking other main parts If the DC fan motor fails the normal inverter PCB may be damaged 3 Perform the troubleshooting of the fuses EF1 on O U PCB1 and EF1 on inverter PCB for fan motor protection If the fuses for fan motor protection fail DC fan motor i...

Page 220: ...SMGB0079 rev 0 01 2013 RAS 8 12 HN P C E N OT E Surely perform the troubleshooting of DC fan motor according to section Procedure of checking other main parts If the DC fan motor fails the normal inverter PCB may be damaged ...

Page 221: ...verse phase connection Only 3 phases unit No Yes No Correctly connect each phase of the power source Faulty PCB1 or other cause see below PCB1 is normal PCB1 is normal Single phase and 3 phases Is there any phase which is not connec ted RAS 2 6 HVN P C E RAS 4 12 HN P C E Voltage for unit to be suspended Running voltage 207 to 253V Setting voltage Less than 187V Voltage for unit to be suspended Ru...

Page 222: ...the set temperature section The unit number and the alarm code are displayed on the display of the outdoor unit PCB This alarm code is displayed when the voltage between terminal P and N of Inverter is insufficient and the alarm has three occurrences in 30 minutes If the number of occurrences is smaller than two the retry operation is per formed The alarm code 06 Means fan controller Abnormal Oper...

Page 223: ...els The power supply voltage for single phase models is 220V and 187V during operation 1 If capacitor has high voltage perform the high voltage discharge work refer to the item Procedure of checking other main parts 2 Regarding replacing or checking method for the inverter PCB refer to the item Procedure of checking other main parts ...

Page 224: ...on the display of the outdoor unit PCB This alarm code is indicated as follows When the temperature at the top of the compressor is lower than condensing temperature and indoor expansion valve opening is lower than 300 pulse for 30 minutes in cooling operation retry operation will be performed once When outdoor expansion valve opening is lower than 70 pulse for 30 minutes in heating operation retr...

Page 225: ... expansion valve if faulty Faulty PCB Fault Replace PCB and check operation Replace PCB if faulty Disconnected Wires for Ex Valve Control Check connections Repair wiring connections Faulty Discharge Gas Thermistor Fault Measure resistance Replace thermistor if faulty Incorrect Mounting Check mounting state See Alarm Code 08 Correctly mount thermistor Incorrect Connection Check connections Remove l...

Page 226: ... and the alarm code are displayed on the display of the outdoor unit PCB The alarm appears during cooling operation when the compressor top thermistor remains at Tdc 1 C or above for 10 minutes or at Tdc 2 C or above for 5 seconds The alarm appears during heating operation when the compressor top thermistor remains at Tdh 1 C or above for 10 minutes or at Tdh 2 C or above for 5 seconds Outdoor cap...

Page 227: ...n 0 24 kΩ or cut greater than 840 kΩ during the cooling process or the heating process The system is automatically restarted when the fault is removed Phenomenon Cause Check item Action Turn OFF the main switch Faulty air inlet thermistor Fault Check the resistance Replace the thermistor if faulty Incorrect connection Check the connection Repair the wiring and the connections Faulty PCB Replace PC...

Page 228: ... are displayed on the display of the outdoor unit PCB This alarm code is displayed when the thermistor is short circuited less than 0 24 kΩ or cut greater than 840 kΩ during the cooling process or the heating process The system is automatically restarted when the fault is removed Phenomenon Cause Check item Action Turn OFF the main switch Faulty air outlet thermistor Fault Check the resistance Rep...

Page 229: ...alarm code are displayed on the display of the outdoor unit PCB This alarm code is displayed when the thermistor is short circuited less than 0 24 kΩ or cut greater than 840 kΩ during the cooling process or the heating process The system is automatically restarted when the fault is removed Phenomenon Cause Check item Action Turn OFF the main switch Faulty freeze protection thermistor Fault Check t...

Page 230: ...rm code are displayed on the display of the outdoor unit PCB This alarm code is displayed when the thermistor is short circuited less than 0 24 kΩ or cut greater than 840 kΩ during the cooling process or the heating process The system is automatically restarted when the fault is removed Phenomenon Cause Check item Action Turn OFF the main switch Faulty gas piping thermistor Fault Check the resista...

Page 231: ...rature of the internal thermostat for the indoor fan motor is higher than 135 C Phenomenon Cause Check item Action Turn OFF the main switch Activation of the internal thermostat for the indoor unit fan motor Faulty indoor unit fan motor Measure the coil resistance and the insulation resist ance Replace the motor if faulty Faulty internal thermostat Fault Check the continuity after the fan motor te...

Page 232: ...mmand to fan motor correctly 5 Yes Yes Faulty I U PCB1 Faulty I U PCB1 Faulty I U PCB1 Is DC power output of I U PCB1 normal 3 Replace I U PCB1 Replace I U PCB1 Replace I U PCB1 3 Measure the voltage between VCC15 and VDC 15V 10 by tester Yes Yes No Occurrence of Alarm Code 19 4 Measure following check points voltages by tester Between VCC05 and GND 5V 4 Between VCC13 and GND 13 1V 10 Normal Volta...

Page 233: ...by tester Yes Yes No Occurrence of Alarm Code 19 4 Measure the following voltage of each check point by a tester Between VCC05 and GND 5V 4 Between VCC13 and GND 13 1V 10 Normal Voltage DC280V No Faulty Fan Motor Replace Fan Motor Yes Faulty I U PCB Faulty Fan Motor Is speed pulse signal to I U PCB sent correctly 6 Replace I U PCB Replace Fan Motor No Does Fan Motor run Yes 5 6 6 Perform the opera...

Page 234: ...e alarm code are displayed on the display of the outdoor unit PCB This alarm code is indicated when the thermistor is short circuited less than 1 kΩ or cut greater than 6 MΩ during the cooling or heating operation Phenomenon Cause Check item Action Turn OFF Main Switch Faulty top of compressor thermistor Fault Check resistance Replace thermistor if faulty Incorrect connection Check wiring to PCB1 ...

Page 235: ...ation Is there connection problem of CN7 on O U PCB1 Is 12V applied between 1 and 3 of the connector CN7 on O U PCB1 Yes Yes Is voltage under 0 1V or over 4 9V between 2 and 3 of the connector CN7 on O U PCB1 Abnormality of High Pressure Sensor Connect correctly Faulty O U PCB1 Yes No No No Faulty O U PCB1 Phenomenon Cause Check item Action Turn OFF Main Switch Faulty top of compressor thermistor ...

Page 236: ... The unit number and the alarm code are displayed on the display of the outdoor unit PCB This alarm code is displayed when the thermistor is short circuited less than 0 2 kΩ or cut greater than 500 kΩ during the operation P C Other than above Phenomenon Cause Check item Action Turn OFF Main Switch Faulty thermistor for the outdoor unit ambient Fault Check resistance Replace thermistor if faulty In...

Page 237: ...ed to the heat exchanger as shown in the figure below If this the thermistor is faulty such as short circuit less than 0 2kΩ or cut more than 500kΩ during opera tion this alarm is displayed The position is indicated below Phenomenon Cause Check item Action Turn OFF the main switch Faulty thermistor for the evaporating temperature during heating Fault Check the resistance Replace the thermistor if ...

Page 238: ...ity RAS 2 2 5 HVNP RAS 3 12 H V NC E 80 120 RAS 3 12 H V NP E 45 150 Phenomenon Cause Check item Action Turn OFF Main Switch Incorrect Capacity Setting of Indoor Unit Check combination of indoor units and capacity setting on PCB Correctly set dip switch DSW3 Incorrect Capacity Setting of Outdoor Unit Check capacity setting on outdoor unit PCB Correctly set dip switch DSW3 Total Indoor Unit Capacit...

Page 239: ...arm code appears when the more than next indoor units are connected to one outdoor unit Model Number of Indoor Units RAS 3HVNPE RAS 4 12 H V N P C E 11 RAS 2 2 5 HVNP RAS 3HVNC 5 The alarm code appears when the indoor and outdoor unit refrigerant system and address are set to 64 or above In such a case the alarm code b1 appears on the remote control switch N O TE The alarm code may appear when H L...

Page 240: ...he diagram below to check the connector of PCN401 The connector shall remain inserted DC12V will constantly be detected and disturb the diagnosis if the connector of PCN401 is pulled out RAS 2 2 5 HVNP RAS 3HVNC RAS 3 6 H V N P C E RAS 8 12 HN P C E The alarm code appears if AC 200V or AC 240V is supplied to the connector on the outdoor unit PCB see table below while Y52C is OFF or CMC1 is open Co...

Page 241: ...ty indication will appear when the protection device is activated during compressor operation at cooling see Note with the outdoor unit evaporation temperature higher than 55 C AND the compressor top temperature higher than 95 C Outdoor unit evaporation thermistor Top of compressor thermistor 90 80 70 60 50 40 30 20 10 0 15 10 5 0 5 10 15 20 25 30 35 40 45 50 55 60 74 43 33 26 20 16 12 5 10 8 5 3 ...

Page 242: ...onnections Repair connections Overcharged Refrigerant Check cycle operating temp Charge refrigerant correctly Mixture of Non Condensable Gas in Refrigerant Cycle Check ambient temp and pressure Recharge refrigerant after vacuum pumping Clogging of Discharge Piping Check for clogging Remove clogging Faulty or Malfunction of Expansion Valve Check for clogging Remove clogging Check connecting wiring ...

Page 243: ...ty indication will appear when the protection device is activated during compressor operation at heating see Note with the outdoor unit evaporation temperature higher than 55 C and the compressor top temperature higher than 95 C Outdoor unit evaporation thermistor Top of compressor thermistor 90 80 70 60 50 40 30 20 10 0 15 10 5 0 5 10 15 20 25 30 35 40 45 50 55 60 74 43 33 26 20 16 12 5 10 8 5 3 ...

Page 244: ...ion Check connections Repair connections Faulty of Outdoor Fan Control Check decreasing air flow volume at pressure switch for control activative Replace thermistor for evaporating temp if faulty Faulty of Pressure Switch for Control Check activated pressure and connecting wire Replace it if pressure switch for control is faulty Overcharged Refrigerant Check cycle operating temp Charge refrigerant...

Page 245: ...he solenoid valve SVA if faulty No No Yes Are electric wiring and refrigerant piping connections between the indoor and outdoor unit incorrectly connected Is the outdoor unit stop valve closed No No Yes Yes Correctly connect it Check the outdoor electronic expansion valve during cooling and the indoor electronic expansion valve during heating Yes Cause Check Item Action Turn OFF Main Switch Phenom...

Page 246: ...FF Main Switch Faulty indoor unit liquid refrigerant temp thermistor Faulty outdoor unit evaporating temp thermistor Fault Check resistance Replace thermistor if faulty Incorrect Connection Check wiring to PCB Repair wiring and connections Faulty PCB Outdoor Unit Indoor Unit Replace PCB and check operation Replace PCB if faulty Excessively Low Suction Pressure in Vacuum Liquid Line Stop Valve is n...

Page 247: ...8 Troubleshooting 233 SMGB0079 rev 0 01 2013 8 Alarm code 48 Overcurrent protection activation for RAS 2 2 5 HVNP and RAS 3HVNC ...

Page 248: ...er supply voltage 187V during operation Yes Is it 170V single phase or 340V 3 phases or more during operation when other devices are operating Yes Is the compressor running current the same as rated current Yes Check the capacity and wiring of the power source Check the fan Check for clogging at heat exchanger Check the stop valves and expansion valve Check the compressor Restart expansion valve C...

Page 249: ...ayed when the current transformer is abnormal 0 A detection or 3 A alarm condition and the alarm has more than three occurrences in 30 minutes Condition of Activation When the frequency of the compressor is maintained at 6 10 Hz after the compressor is started one of the absolute values of the running current at each phase U U V and V is less than 1 5 A including 1 5A Before the compressor is oper...

Page 250: ...5 18 Hz after the compressor is started one of the absolute values of the running current at each phase U U V and V is less than 1 5 A including 1 5A Before the compressor is operated at the end of position control the current wave value is less than 5 0 A Abnormal Replace comp Restart operation No Faulty inverter PCB Replace it 2 Compressor stops immediately nearly 18Hz Compressor is not operated...

Page 251: ...the alarm has more than three occurrences in 30 minutes Condition of Activation When the frequency of the compressor is maintained at 15 18 Hz after the compressor is started one of the absolute values of the running current at each phase U U V and V is less than 1 5 A including 1 5A Before the compressor is operated at the end of position control the current wave value is less than 5 0 A Replace ...

Page 252: ...e abnormal operation This alarm is displayed when the ISPM module detects the abnormal operation 7 times or more than 7 times in 30 minutes The retry operation is performed six times Conditions The abnormal current to the ISPM such as short circuited grounded overcurrent or control voltage decrease Replace electrical box N OT E 1 Regarding replacing or checking method for ISPM refer to item Proced...

Page 253: ... protecting function activate 3 No Is heat exchanger of clogged Remove clogging or replace heat exchanger Check the compressor Check the compressor Replace it if faulty Check fan motor No Check the compressor Normal Failure of Inverter PCB Replace it Check pressure and refrigerant cycle Is high pressure increased Check clogging for heat exchanger Abnormal Itc 1 12 Itc 21 Restart operation Compress...

Page 254: ... outdoor unit PCB IPM or Dip IPM and PCB2 have detecting function of abnormality This alarm is indicated when the transistor mod ule detect the abnormality 7 times in 30 minutes including 7 Retry operation is performed up to the occurrence of 6 times Conditions The abnormal current such as short circuited grounded or the overcurrent occurs at the transistor module The temperature at transistor mod...

Page 255: ...current as same as operating current Yes Yes No Yes Yes Yes Yes O U Outdoor Unit I U Indoor Unit Yes Is heat exchanger clogged Remove clogging or Replace heat exchanger No Turn OFF power disconnect U V W from compressor terminals and restart Does the protecting function activate 3 Abnormal Failure of Inverter PCB Replace it Check the compressor Refer to the item 1 2 8 D Cause Code of Inverter Stop...

Page 256: ...e outdoor unit PCB IPM or Dip IPM and PCB2 have detecting function of abnormality This alarm is indicated when the transistor mod ule detect the abnormality 7 times in 30 minutes including 7 Retry operation is performed up to the occurrence of 6 times Conditions The abnormal current such as short circuited grounded or the overcurrent occurs at the transistor module The temperature at transistor mo...

Page 257: ... work by referring to the item Procedure of checking other main parts before checking and replacing the inverter components 2 Regarding replacing or checking method for inverter components refer to item Procedure of checking other main parts 3 Turn ON the No 1 switch of the dip switch DSW1 on PCB2 inverter when restarting with disconnecting the terminals of the compressor After troubleshooting tur...

Page 258: ...lowing condition occurs three times within 30 minutes The retry operation is performed twice Conditions When the temperature of the thermistor for inverter fin excess 80 C RAS 3HVNPE When the temperature inside the transistor module excess 90 C RAS 4 6 H V NPE When the temperature of the thermistor for inverter fin excess 92 C RAS 4 6 H V NCE Restart operation Does it trip soon Is the heat exchang...

Page 259: ...eration is stpped when the following condition occurs three times within 30 minutes The retry operation is performed twice Conditions When the temperature of the thermistor for inverter fin excess 100 C No Replace the dipIPM ISPM IPM 1 Restart the operation Does it trip soon Yes Remove the clogging Is the heat exchanger of the outdoor unit clogged Faulty PCB2 or thermistor Replace it No Is thermis...

Page 260: ...ally Turn off power after LED201 for RAS 3 6 H V NPE RAS 8 12 HN P C E or LED303 for RAS 4 6 H V NCE on inverter PCB is turned OFF and restart N OT E When the excessive surge current is applied to the unit due to lighting or other causes this alarm code or the cau se code of inverter stoppage Itc 11 will be indicated on the 7 segment display on O U PCB1 and the unit can not be operated In this cas...

Page 261: ...e are alternately displayed on the set temperature section The unit number and the alarm code are displayed on the display of the outdoor unit PCB This alarm is indicated when the revolution pulse output from the fan motor is lower than 20min 1 during 30 seconds and it stops Regarding stops when less than 35 seconds have passed since fan start up after the first abnormality is detected if its occu...

Page 262: ... the fan motor is 10 rpm or less and the reverse revolution signal is detected The fan motor is stopped once and restarted after 10 seconds If it occurs more than 10 times in 5 minutes after the first abnormality occurs this alarm is indicated The abnormality occurs when the fan motor is stopped by slugging Check the connectors CN14 and CN15 on PCB1 and CN203 CN204 CN201 CN202 PCN201 and PCN202 on...

Page 263: ...tdoor unit PCB This alarm is indicated when the revolution pulse output from the fan motor is 10 rpm or less and the reverse revolution signal is detected The fan motor is stopped once and restarted after 10 seconds If it occurs more than 10 times in 5 minutes after the first abnormality occurs this alarm is indicated The abnormality occurs when the fan motor is stopped by slugging Check the conne...

Page 264: ...can clear these alarms only by turning OFF the main switch to the system However you must pay careful attention before start ing because there is a possibility of causing serious damages to the compressors Alarm code b0 Incorrect Setting of Unit Model Code The RUN LED flickers and ALARM is displayed on the remote control switch The unit number the alarm code and the unit code are alternately displ...

Page 265: ... and the refrigerant cycle No from 1 to 63 Setting No for the 64th unit shall be 0 b Unit No Setting Ref Cycle No Setting Starting from 0 Set the unit No and the refrigerant cycle No from 0 to 63 Setting No for the 64th unit shall be 63 The unit No setting and the refrigerant cycle No setting are set between 16 and 63 and the indoor unit does not support H LINK ll Set the unit No and the refrigera...

Page 266: ...r 16 o Indoor Air inlet DX Coil thermistor Tincoil Loose disconnected broken or short circuited connector 17 o Indoor Air outlet DX Coil thermistor Tout coil Loose disconnected broken or short circuited connector 18 o o o Indoor Indoor RA fan protection device activation for KP Fan motor overheating locking 19 o o o Indoor Indoor OA fan protection device activation for KPI or DX KIT2 Fan Fan motor...

Page 267: ... also be displayed as Unit number and alarm code displayed The alarm code that identifies the last fault that has occurred in the displayed unit The unit number of the connected unit or the unit number for which the checking mode was selected previously ADDS Number of the indoor unit in number cycle RN Number refrigerant cycle Check mode 1 After seven seconds Within seven seconds to check another ...

Page 268: ... is open circui ted or PCB is defective or 4 Indoor unit heat exchanger liquid pipe temperature C b4 20 12g Temperature for top of compressor 5 Temperature at remote sensor C b5 25 FF Thermistor is short circui ted or PCB is defective or 6 Outdoor unit ambient temperature C b6 10 255 or 7 Indoor unit heat exchanger gas pipe temperature C b7 25 127 Temperature for top of compressor 8 Outdoor unit e...

Page 269: ...minutes indoor units are stopped In this case stoppage is d1 06 cause and the alarm code 03 may be indicated 01 Thermo OFF NOTE 1 activating float switch 02 Alarm NOTE 2 03 Freeze protection overheating protection 05 Instantaneous power failure at outdoor unit reset NOTE 3 06 Instantaneous power failure at indoor unit reset NOTE 4 07 Outdoor temperature at cooling lower than 5ºC outdoor air temper...

Page 270: ...ressor pressure frequency indication 20 Discharge pressure high x 0 1 MPa H1 18 21 Suction pressure low x 0 01 MPa H2 04 22 Control information H3 44 This is an indication for internal information for the remote control switch This does not have any specific meaning 23 Operation frequency Hz H4 44 This is an indication for frequency of inverter Indoor unit capacity indication The capacity of the i...

Page 271: ...V2 opening L3 gg In case of models without the expansion valve MV2 the same figure is displayed 31 Control information L4 00 Estimated electric current indication 32 Compressor running current A P 25 The total current is displayed when several compressors are running In case of the inverter compressor the running current of the primary side of the inverter is displayed Returns to temperature indic...

Page 272: ... 12 Corresponds to check mode 1 b6 5 Indoor unit heat exchanger gas pipe temperature C 95 25 Corresponds to check mode 1 b7 6 Evaporating temperature at heating C 96 03 Corresponds to check mode 1 b8 7 Control information 97 Corresponds to check mode 1 b9 8 Discharge gas temperature at the top of compressor chamber C 98 45 Corresponds to check mode 1 bA Compressor pressure frequency indication 9 D...

Page 273: ...r 1 second Abnormal operation 3 After 1 second To next page Indi cation Contents Normal Abnormality open circuit short circuit etc in circuit for Air inlet temperature thermistor Indoor unit PCB Discharge air temperature thermistor Liquid pipe temperature thermistor Remote thermistor abnormality Gas pipe temperature thermistor Remote sensor Transmission of central station EEPROM Zero cross input f...

Page 274: ...No 1 Press After 1 second Release PCB check mode NO TE If this indication continues and the alarm code is not displayed this means that each one of indoor unit is not connected to the remote control switch Check the wiring between the remote control switch and the indoor unit In this troubleshooting procedure checking of the following parts of the PCB is not available PCB in indoor unit relay circ...

Page 275: ...n in the right figure 4 After the LCD changes as shown in the right figure the RUN indicator flickers twice 5 The LCD changes as shown below Press all the switches 13 switches one by one Every time you press the switch the number of the indication of the part A in the figure below increases one NOTE Unless all the switches are pressed the checking does not proceed to the next item You can press th...

Page 276: ...have passed the remote control switch is automatically activa ted again 10 When the remote control switch is activated again the RUN indicator is ON and the op eration is started Therefore press the RUN STOP switch and stop the operation NOTE In case that the operation is not automatically started when the remote control switch is activated again the detection cir cuit for the momentary stoppage m...

Page 277: ...History Display Check 2 01 02 Check 1 ENT RTN SEL OK A C COOL HIGH LOUV ADJ Meeting Room MODE SPEED LOUV TEMP FLTR OK Press and hold menu and help simultaneously for 3 seconds during the normal mode Contents of the check mode 1 and 2 1 Press and hold menu and help simultaneously for 3 seconds during the normal mode The check menu is displayed Check Menu Function 5 Model Display Alarm History Displ...

Page 278: ...Temp of Remote Control Switch 28 J4 Refrigerant Cycle Number 2 12 bC Not Prepared 29 L1 I U Expansion Valve 13 C1 I U Micro Computer 30 L2 O U Expansion Valve 1 14 C2 O U Micro Computer 31 L3 O U Expansion Valve 2 15 d1 Stopping Cause State Indication 32 L4 O U Expansion Valve B 16 E1 Times of Abnormality 33 P1 Comp Current 17 E2 Times of Power Failure 34 q1 Motion Sensor Reaction Rate 0 100 Check...

Page 279: ...d the screen will return to 3 Check 1 Checking Check 2 Checking Check 3 Checking I U O U PCB Check 01 01 5 After completing the check the result of PCB check will be indicated Press return and return to 3 Check 1 00 Check 2 00 Check 3 00 I U O U PCB Check 01 01 Result of check table Indoor Unit PCB Outdoor Unit PCB 0 Normal 0 Normal Abnormality of Inlet Air Temp Thermistor Abnormality of Transmiss...

Page 280: ...ck press help To clear EEPROM press and help simultaneously See EEPROM clear process 15 next page 0 1 0 0 0 P 3400 ARF 8Y050 2008 11 06 12 34 Self Checking 4 LCD Test Press OK and the screen will be switched as shown in the figure 0 2 0 0 0 Self Checking 5 Backlight Test LCD brightness changes gradually by pressing OK 0 3 0 0 0 Self Checking 6 Contrast Test Contrast of the LCD gradually changes by...

Page 281: ...1 00 00 Self Checking 13 EEPROM Test EEPROM Clearing Cancel Press help EEPROM Clear Press OK or wait 15 seconds EEPROM data will be cleared During the process the numbers will be indicated on where A is located If A indicates 999 EEPROM is in a faulty condition In case A indicates 999 the process does not proceed to next step 11 0 0 0 Self Checking 14 After the several seconds pass the self checki...

Page 282: ...circuit board PCB1 Checking method by 7 segment display Operating conditions and each part of refrigeration cycle can be checked by 7 segment and push switches PSW on the PCB in the outdoor unit During checking data do not touch the electric parts except for the indicated switches because 220 240V is applied to them Pay attention not to contact the tools with electrical parts If contacted electric...

Page 283: ...hat current is higher than 100ºC the last two digits flash Outdoor unit address 13 nA 00 00 63 In case of twin triple quad type unit the information of 2nd to the 4th indo or units is indicated repeatedly The right character of the indication represents the indoor unit setting No Single A Twin A b Triple A b c Quad A b c d Indoor unit expansion valve opening 14 EA 20 00 100 In case that opening is...

Page 284: ...t is higher than 100ºC the last two digits flash Inverter secondary current 14 A2 20 00 199 A In case that current is higher than 100ºC the last two digits flash Outdoor unit address 15 nA 00 00 63 In case of twin triple quad type unit the information of 2nd to the 4th indo or units is indicated repeatedly The right character of the indication represents the indoor unit setting No Single A Twin A ...

Page 285: ... higher than 100ºC the last two digits flash Inverter secondary current 14 A2 20 00 199 A In case that current is higher than 100ºC the last two digits flash Outdoor unit address 15 nA 00 00 63 In case of twin triple quad type unit the information of 2nd to the 4th indo or units is indicated repeatedly The right character of the indication represents the indoor unit setting No Single A Twin A b Tr...

Page 286: ...peration mode 26 Retry due to high pressure decrease 28 Cooling air discharge temperature decrease 33 Forced Thermo OFF 34 Forced Thermo OFF 35 Retry due to abnormal operating mode Reversing valve switching failure N O TE The cause code for indoor unit stoppage is not always 02 Alarm during stoppage by the abnormality If the unit is under Thermo OFF by other cause of stoppage before 02 Alarm occur...

Page 287: ...rcurrent Undercurrent Temperature increase 17 P7 53 2 Instantaneous Over Current 17 P7 48 3 Abnormal Inverter Fin Thermistor 17 P7 54 4 Electronic Thermal Activation Inverter overcurrent 17 P7 48 5 Inverter Voltage Decrease Undervoltage 18 P8 06 6 Over Voltage 18 P8 06 7 Abnormal Inverter Transmission 18 8 Abnormal Current Detection 17 P7 51 9 Instantaneous Power Failure Detection 18 11 Reset of M...

Page 288: ...ority Protection control Code 1 Low Pressure Ratio Control at Cooling Operation p00 2 High pressure ratio control at heating operation p01 3 High pressure rise protection p02 4 Current protection p03 5 Inverter fin temperature rise prevention P04 6 Discharge gas temperature rise protection p05 7 Unbalance Power Source Detecting p09 8 Demand current control p0A 9 Low Pressure Decrease Protection p0...

Page 289: ...s lower than a threshold value Frequency Decrease P2 High Pressure Increase Protection High Pressure Switch for Control is activated Frequency Decrease P3 Over Current Protection Inverter Output Current 1 A Frequency Decrease P4 Inverter Temperature Increase Protection Inverter Fin Temperature RAS 2 2 5 HVNP RAS 3HVNC 70 ºC Frequency Decrease P5 Discharge Gas Temperature Increase Protection Temper...

Page 290: ...ending on the frequency Temperature at the top of compressor 107 ºC Indicate P5 P09 High pressure decrease protection Discharge pressure of compressor decrease under 10MPa Frequency increase Cooling operation and lowest step fan or heating operation p0A Demand current control running current limit control Compressor run current demand setting value frequency decrease Demand setting value upper lim...

Page 291: ...necting wires to an electrical soldering iron 3 Connect the wires to terminals P and N on DIP IPM The discharge voltage can perform even when con necting the wires to terminals 1 P and 3 N of connector PCN201 Discharging is started re sulting in hot soldering iron Pay attention not to short circuit between terminal P and N 4 Wait for 2 or 3 minutes and measure the voltage once again Check to ensur...

Page 292: ... terminals have 100 kΩ or greater Contact with specified terminals to measure Tester 5 Touch side of the tester to P of DIP IPM solde red part and side to DIP IPM U V W terminals to measure the resistance Normal if all three terminals have 1 kΩ or greater 6 Contrary to 5 touch side of the tester to P of DIP IPM soldered part and side to DIP IPM U V W terminals to measure the resistance Normal if a...

Page 293: ...dered part to mea sure the resistance Normal if all three terminals have 100 kΩ or greater 13 Contrary to 12 touch side of the tester to DIP IPM DCL2 terminal and side to N of DIP IPM soldered part to measure the resistance Normal if all three terminals have 10 kΩ or greater Resistance gradually increases during measurement Contact with specified terminals to measure Tester Checking Method of Resi...

Page 294: ...parts C aution Electrical hazard Risk of electrical shock Perform this high voltage discharge work to avoid an electric shock 1 Turn OFF the main switches and wait for three minutes Check to ensure that no high voltage exists If LED2 is ON after start up and LED2 is OFF after turning OFF power source the volta ge will decrease lower than DC50V 2 Connect connecting wires to an electrical solder bit...

Page 295: ...r to U V and W of transistor mo dule measure the resistance If all the resistances are from 1 to 5kΩ it is normal 2 By touching the side of the tester to the P terminal of transistor module and the side of tester to U V and W of transistor mo dule measure the resistance If all the resistances are greater than 100kΩ it is normal 3 By touching the side of the tester to the N terminal of transistor m...

Page 296: ... are from 5 to 50kΩ it is normal 2 By touching the side of the tester to the terminal of diode module and the side of tester to the terminals A of the diode module measure the resistance If all the resistances are greater than 500kΩ it is normal 3 By touching the side of the tester to the terminal of diode mo dule and the side of tester to the terminals A of the diode module measure the resistance...

Page 297: ... x 2 PC CN is nearly equal to PN 2 R1 R2 1 If the value is different Capacitor could be damaged by overload 04 alarm could be displayed if low supply voltage CN for ISPM control part is present 2 R1 9 5Ω R2 14 0Ω If these values are different the capacitors will be not properly charged Resistance between P1 TB3 2kΩ white resistance in the ISPM In case that Mg SW 52C CMC1 is not ON the compressor c...

Page 298: ...internal electronic circuit of the fan motor has a short circuit fault 2 Measure the fan motor resistance Measurement procedure 1 Remove the fan motor connector from the control PCB ISPM or DIP IPM 2 Connect the black test lead of the tester to the black wire pin of the fan motor connector 3 Connect the red test lead to the wire connector pin to be checked Results Normal Observed values will be cl...

Page 299: ...r units are under the pump down pro cess Electronic expansion valve Freeze protection thermistor It is abnormal if the liquid pipe pressure does not increase and the outlet tempe rature of the expansion valve decreases after the pump down process starts Locked with fully open It is abnormal under the following condi tions after the heating process for more than 30 minutes the discharge gas tem per...

Page 300: ...VNP RAS 3 12 H V NC E Compressor EU1014D9 1 138 at 75o C RAS 2HVNP EU140XA2 1 138 at 75o C RAS 2 5HVNP EU180XA1 1 138 at 75o C RAS 3HVNC 2YC45HXD 0 644 at 75 ºC RAS 3HVNPE 2YC63FXD 0 310 at 75o C RAS 4H V NCE E402HHD 36A2 0 460 at 75 ºC RAS 4 6 H V NPE E401HHD 36A2 0 282 at 75 ºC RAS 5 6 H V NCE E507DHD 50A2 0 136 at 75 ºC RAS 8HNPE E657DHD 65A2 0 094 at 75 ºC RAS 10 12 HNP E E655DHD 65D2 0 199 at...

Page 301: ...s exp valve MV1 correctly connected Check to ensure that MV1 to CN5A is correctly connected 8 Is exp valve coil MV1 correctly connected Check to ensure that each coil is correctly mounted on the valve 9 Are the refrigeration cycle and electrical wiring system incorrectly connected Check to ensure that refrigerant is flowing into indoor units by operating one refrigerating cycle only from the outdo...

Page 302: ...ctrical wave becomes unstable giving stress to the motor winding resulting in winding insulation failure 7 8 During a cooling operation SH is controlled by MV of each indoor units During a heating operation Td is controlled by MV1 If expansion valves are incorrectly connected correct control is not available resulting in compressor seizure depending on liquid refrigerant returning conditions or mo...

Page 303: ... parts 295 9 3 3 Parts name 296 9 4 RAS 4 6 H V NPE 297 9 4 1 Cycle and structural parts 297 9 4 2 Electrical parts 298 9 4 3 Parts name 300 9 5 RAS 4 6 H V NCE 302 9 5 1 Cycle and structural parts 302 9 5 2 Electrical parts 304 9 5 3 Parts name 306 9 6 RAS 8 10 HN P C E 308 9 6 1 Cycle and structural parts 308 9 6 2 Electrical parts 310 9 6 3 Parts name 311 9 7 RAS 12HN P C 314 9 7 1 Cycle and st...

Page 304: ...ral parts 4 LOCATION OF SPARE PARTS IN THE UNIT MODEL RAS 2HVNP RAS 2 5HVNP D RAS 2HVNP V D RAS 2 5HVNP V U01A U34A U81 U01B U40 U82 U71 U48 U38 U51 U70 U78 U28 U21B U34B U15A U21A U79 U15C U15B U32A U27B U27A U32B U89 U85 U04 U98A U98B U98E U98C U98D Spare Parts Document EPN 201212A ...

Page 305: ...27A Stop valve Gas line U27B Stop valve Liquid line U28 Check joint U32A Vibration absorber U32B Vibration absorber U34A Air grille Outlet U34B Air grille Inlet U38 Piping set U40 Condenser assembly U48 Electrical box ass y U51 Propeller fan U70 Compressor U71 Motor U78 Oil heater U79 Four way valve ass y U81 Coil for 4 way valve U82 Reactor U85 Printed circuit board U89 Accumulator U98A Cabinet p...

Page 306: ...le and structural parts 5 LOCATION OF SPARE PARTS IN THE UNIT MODEL RAS 3HVNC D RAS 3HVNC V U01A U34A U81 U01B U40 U82 U98B U71 U98E U48 U51 U70 U78 U28 U21B U34B U04 U85 U98A U15A U98C U21A U79 U15C U15B U32A U27B U27A U32B U89 U98D Spare Parts Document EPN 201212A ...

Page 307: ...A Stop valve Gas line U27B Stop valve Liquid line U28 Check joint U32A Vibration absorber U32B Vibration absorber U34A Air grille Outlet U34B Air grille Inlet U40 Condenser assembly U48 Electrical box ass y U51 Propeller fan U70 Compressor U71 Motor U78 Oil heater U79 Four way valve ass y U81 Coil for 4 way valve U82 Reactor U85 Printed circuit board U89 Accumulator U98A Cabinet panel U98B Cabinet...

Page 308: ... Dec 12 PAGE 4 21 SUBJECT New issue of Spare Parts List for HITACHI New DC Inverter UTOPIA Outdoor Units IVX Premium and IVX Standard Series EPN 201211A Hitachi Air Conditioning Products Europe S A Barcelona Spain Nº LOCATION OF SPARE PART IN THE UNIT CABINET AND CYCLE RAS 3HVNPE Spare Parts Document EPN 201211A ...

Page 309: ...JECT New issue of Spare Parts List for HITACHI New DC Inverter UTOPIA Outdoor Units IVX Premium and IVX Standard Series EPN 201211A Hitachi Air Conditioning Products Europe S A Barcelona Spain Nº LOCATION OF SPARE PART IN THE UNIT ELECTRICAL PARTS RAS 3 4 5 6 HVNPE View from A A Spare Parts Document EPN 201211A ...

Page 310: ...y 20 End P Unit 21 Partition S Assy 22 Accumulator 23 Strainer 24 Pressure SW for Low Pressure 25 Coil 20 Coil for Solenoid Valve 26 Coil Coil for 4 Way Valve 27 4 Way Valve Assy Assembly 27 1 D Pipe Unit 27 1 1 Silencer 27 1 2 Pressure SW PSH High 27 1 3 P Sensor PSC Control 27 2 SVC Assy 27 2 1 Solenoid Valve SVA 27 3 4 Way Valve RVR 27 4 Stop Valve For liquid line 3 8 27 5 Stop Valve For gas li...

Page 311: ... Dec 12 PAGE 8 21 SUBJECT New issue of Spare Parts List for HITACHI New DC Inverter UTOPIA Outdoor Units IVX Premium and IVX Standard Series EPN 201211A Hitachi Air Conditioning Products Europe S A Barcelona Spain Nº LOCATION OF SPARE PART IN THE UNIT CABINET AND CYCLE RAS 4 5 6 H V NPE Spare Parts Document EPN 201211A ...

Page 312: ...ECT New issue of Spare Parts List for HITACHI New DC Inverter UTOPIA Outdoor Units IVX Premium and IVX Standard Series EPN 201211A Hitachi Air Conditioning Products Europe S A Barcelona Spain Nº LOCATION OF SPARE PART IN THE UNIT ELECTRICAL PARTS RAS 3 4 5 6 HVNPE View from A A Spare Parts Document EPN 201211A ...

Page 313: ...ssue of Spare Parts List for HITACHI New DC Inverter UTOPIA Outdoor Units IVX Premium and IVX Standard Series EPN 201211A Hitachi Air Conditioning Products Europe S A Barcelona Spain Nº LOCATION OF SPARE PART IN THE UNIT ELECTRICAL PARTS RAS 4 5 6 HNPE View from A A Spare Parts Document EPN 201211A ...

Page 314: ...ibration Absorber 19 Special Nut 20 Rubber Cap 21 Condenser Assembly Heat exchanger 21 1 21 2 21 1 Header L Unit Assembly 21 1 1 EVO Assy Assembly No Part name Remarks 21 1 1 1 Expansion Valve EVO 21 1 1 2 Strainer 21 2 Header G Unit Assembly 22 EXPV Coil Coil for Expansion Valve 23 Stay 24 End P Unit 25 Partition Assy 26 Tank Assy 27 Strainer 28 Pressure SW for Low Pressure 29 Coil 20 Coil for So...

Page 315: ...ctor Unit 2 11 MG SW CMC1 3 Power Unit Assy Assembly 3 1 3 2 3 1 Power Stay Assy Assembly 3 2 Inv Fin Assy 4 Upper Support RAS 4 6 HNPE No Part name Remarks 1 Electrical Wiring Diagram Assembly 2 3 Harness 2 P Plate Unit Assembly 2 1 2 11 2 1 P Plate Assy Assembly 2 2 Printed Circuit Board PCB1 PO101B Assy 2 3 Spacer for PCB1 2 4 Push Spacer for PCB1 2 5 Terminal Board TB 2 6 Noise Filter NF 2 7 S...

Page 316: ...E Dec 12 PAGE 12 21 SUBJECT New issue of Spare Parts List for HITACHI New DC Inverter UTOPIA Outdoor Units IVX Premium and IVX Standard Series EPN 201211A Hitachi Air Conditioning Products Europe S A Barcelona Spain Nº LOCATION OF SPARE PART IN THE UNIT CABINET AND CYCLE RAS 4H V NCE Spare Parts Document EPN 201211A ...

Page 317: ... New issue of Spare Parts List for HITACHI New DC Inverter UTOPIA Outdoor Units IVX Premium and IVX Standard Series EPN 201211A Hitachi Air Conditioning Products Europe S A Barcelona Spain Nº LOCATION OF SPARE PART IN THE UNIT CABINET AND CYCLE RAS 5 6 H V NCE Spare Parts Document EPN 201211A ...

Page 318: ...JECT New issue of Spare Parts List for HITACHI New DC Inverter UTOPIA Outdoor Units IVX Premium and IVX Standard Series EPN 201211A Hitachi Air Conditioning Products Europe S A Barcelona Spain Nº LOCATION OF SPARE PART IN THE UNIT ELECTRICAL PARTS RAS 4 5 6 HVNCE View from A A Spare Parts Document EPN 201211A ...

Page 319: ...ssue of Spare Parts List for HITACHI New DC Inverter UTOPIA Outdoor Units IVX Premium and IVX Standard Series EPN 201211A Hitachi Air Conditioning Products Europe S A Barcelona Spain Nº LOCATION OF SPARE PART IN THE UNIT ELECTRICAL PARTS RAS 4 5 6 HNCE View from A A Spare Parts Document EPN 201211A ...

Page 320: ...er Cap 21 Condenser Assembly Heat exchanger 21 1 21 2 21 1 Header L Unit Assembly 21 1 1 EVO Assy Assembly 21 1 1 1 Expansion Valve EVO No Part name Remarks 21 1 1 2 Strainer 21 2 Header G Unit Assembly 22 EXPV Coil Coil for Expansion Valve 23 Stay 24 End P Unit 25 Partition S Assy 26 Accumulator Assy 27 Strainer 28 Coil 20 Coil for Solenoid Valve 29 Coil Coil for 4 Way Valve 30 4 Way Valve Assy A...

Page 321: ... RAS 5 6 HVNCE 2 10 Reactor Unit 2 11 MG SW CMC1 3 Power Unit Assy Assembly 3 1 3 2 3 1 Power Stay Assy Assembly 3 2 Inv Fin Assy 4 Upper Support RAS 4 6 HNCE No Part name Remarks 1 Electrical Wiring Diagram Assembly 2 3 Harness 2 P Plate Unit Assembly 2 1 2 11 2 1 P Plate Assy Assembly 2 2 Printed Circuit Board PCB1 PO101E Assy 2 3 Spacer for PCB1 2 4 Push Spacer for PCB1 2 5 Terminal Board TB 2 ...

Page 322: ...9 Spare parts 308 SMGB0079 rev 0 01 2013 9 6 RAS 8 10 HN P C E 9 6 1 Cycle and structural parts RAS 8 10 HNPE Spare Parts Document EPN 201211B ...

Page 323: ...9 Spare parts 309 SMGB0079 rev 0 01 2013 9 RAS 8 10 HNCE Spare Parts Document EPN 201211B ...

Page 324: ...9 Spare parts 310 SMGB0079 rev 0 01 2013 9 6 2 Electrical parts Spare Parts Document EPN 201211B ...

Page 325: ... Cap 20 Condenser Assembly Heat exchanger 21 1 21 2 20 1 Header L Unit Assembly 20 1 1 EVO Assy Assembly 20 1 1 1 Expansion Valve 20 1 1 2 Strainer 20 2 Header G Unit Assembly 21 EXPV Coil Coil for Expansion Valve 22 Stay 23 End P Unit 24 Partition Assy 25 Accumulator Assy Assembly No Part name Remarks 26 Strainer 27 Pressure SW 28 Coil 20 Coil for Solenoid Valve 29 Coil Coil for 4 Way Valve 30 4 ...

Page 326: ...r Cap 20 Condenser Assembly Heat exchanger 21 1 21 2 20 1 Header L Unit Assembly 20 1 1 EVO Assy Assembly 20 1 1 1 Expansion Valve 20 1 1 2 Strainer 20 2 Header G Unit Assembly 21 EXPV Coil Coil for Expansion Valve 22 Stay 23 End P Unit 24 Partition Assy 25 Accumulator Assy Assembly No Part name Remarks 26 Strainer 27 Pressure SW 28 Coil 20 Coil for Solenoid Valve 29 Coil Coil for 4 Way Valve 30 4...

Page 327: ... 2 5 Terminal Board TB 2 6 Noise Filter NF 2 7 Fuse Holder 2 8 Fuse 40A 3 Power Unit Assembly 3 1 Inverter Fin 3 2 Diode M DM 3 3 Transistor M 3 4 Printed Circuit Board PCB2 PV093 Assy 3 5 Collar Plastic Material 3 6 Bush Plastic Material 3 7 Push Spacer For PCB2 3 8 Thermistor Fin thermistor 4 CB Stay Assy Assembly 4 1 Reactor Unit DCL 4 2 MG SW CMC 4 3 Resister RS1 RS2 4 4 Resistor R1 4 5 Resist...

Page 328: ...Head Tapping Screw Hexagon Head Bolt Stud Bolt Nut Washer Spring Lock Washer Toothed Lock Washer NOTE The unicromated coating is applied to iron and steel material for the unspecified materials of the bolt and screw LOCATION OF SERVICE PARTS IN THE UNIT MODEL RAS 12HNP Cabinet and Fan RAS 12HNC 7 12 31 53 59 58 57 60 34 35 37 36 32 30 20 19 65 18 16 14 17 15 18 20 19 2 3 12 12 4 12 12 4 3 12 12 12...

Page 329: ...rew Hexagon Head Bolt Stud Bolt Nut Washer Spring Lock Washer Toothed Lock Washer NOTE The unicromated coating is applied to iron and steel material for the unspecified materials of the bolt and screw LOCATION OF SERVICE PARTS IN THE UNIT MODEL RAS 12HNP Electrical Parts 3f 400V 50Hz RAS 12HNC View from 1 30 32 33 27 35 23 25 24 29 28 28 26 18 6 36 5 3 12 11 7 10 9 2 3 3 4 8 19 37 16 16 17 14 13 1...

Page 330: ...Valve SAGINOMIYA UKV 32D28 36 Coil SAGINOMIYA UKV U029E 37 Strainer 38 Strainer No Part name Remarks 39 Solenoid Valve Assy SVF 40 Solenoid Valve Nichiden Industry SR10D 41 Coil Nichiden Industry SR10D 42 Strainer 43 Piping Assy 44 Reversing Valve SAGINOMIYA STF 0712G 45 Coil SAGINOMIYA VHV 01AP552B1 46 Check Valve 47 Pressure Switch for High Pressure Protec tion SAGINOMIYA ACB DB157 48 Pressure S...

Page 331: ...erial 11 Terminal Block for Power Source 12 Terminal Block for Transmission 13 Noise Filter 14 Plastic Material 15 Fuse 40A 16 Fuse Holder 17 Capacitor 440V 10μF 18 Metal Plate 19 Printed Circuit Board for Inverter Control PV093 S 20 Plastic Material 21 Plastic Material 22 Plastic Material 23 Thermistor Inverter Fin 24 Transistor Module 25 Capacitor Assy for Noise Suppressor 26 Diode Module 27 Var...

Page 332: ......

Page 333: ...over 333 10 3 1 5 Removing outdoor fan motor 334 10 3 1 6 Removing electrical box 335 10 3 1 7 Removing the compressor 336 10 3 1 8 Removing the High pressure switch and Pressure switch for control 339 10 3 1 9 Opening electrical box P plate 340 10 3 1 10 Removing Reversing valve coil 340 10 3 1 11 Removing electronic expansion valve coil 341 10 3 1 12 Removing solenoid valve coil SVC 341 10 3 1 1...

Page 334: ...h for control 367 10 3 3 9 Opening electrical box P Mounting Plate 367 10 3 3 10 Removing reversing valve coil 368 10 3 3 11 Removing electronic expansion valve coil 369 10 3 3 12 Removing solenoid valve coil SVA and SVC 369 10 3 3 13 Removing reversing valve 370 10 3 3 14 Removing Electronic expansion Valve and Solenoid Valve 371 10 3 3 15 Removing electrical components 372 10 3 3 16 Removing oth...

Page 335: ... Outdoor Units RAS 8 10 HNCE 408 10 4 2 1 Removing service cover 408 10 4 2 2 Removing air outlet grille 408 10 4 2 3 Removing upper cover 409 10 4 2 4 Removing the bottom service cover and rear cover 409 10 4 2 5 Removing outdoor fan motor 410 10 4 2 6 Removing electrical box 411 10 4 2 7 Removing the compressor 412 10 4 2 8 Removing High pressure switch and pressure switch for control 415 10 4 2...

Page 336: ...l box P Mounting Plate 430 10 4 3 9 Removing reversing and solenoid valves coils 431 10 4 3 10 Removing electronic expansion valve coil 432 10 4 3 11 Removing reversing valve 433 10 4 3 12 Removing Electronic expansion Valve and Solenoid Valve 434 10 4 3 13 Removing electrical components 435 10 4 3 14 Removing other electrical components 437 ...

Page 337: ...r all electrical maintenance Do NOT touch the electrical components when the LED201 Red on the inverter PCB is ON to avoid electrical shock N OT E All compressors are connected by brazing Check to ensure whether there are flammable things around or not when using a burner for pipe connections if not oil existing pipe inside may ignite Do not expose the refrigerant cycle to the atmosphere for a lon...

Page 338: ...g 1 screw 1 Pipe cover 1 10 2 2 Removing front cover 1 Remove the pipe cover following Removing pipe cover 2 Remove 3 fixing screws and remove the upper cover 3 To remove the front cover remove 8 fixing screws and 3 left nails 1 1 2 1 Upper cover 1 Front cover 2 Nails 10 2 3 Removing outdoor fan 1 Remove the pipe cover following Removing pipe cover 2 Remove 3 fixing screws and remove the upper cov...

Page 339: ... into the connector CN24 on the PCB 10 2 4 Removing the compressor N OT E Do not expose the refrigerant cycle to the atmosphere for a long period to avoid moisture or dust into the cycle Be sure to replace the compressor immediately after removing Seal to the suction and discharge pipes when the refrigerant cycle is left unattached for a prolonged time Remove the cap of new compressor right before...

Page 340: ...terminal box and remove the thermistor on top of the compressor Check the wiring color and layout when disconnecting Connecting wires in wrong order at reassembling may result in compressor damage 1 Compressor Top Thermistor Mount onto Terminal Cover with Metal Fitting 2 Yellow 3 White 4 Red 5 Terminal cover 6 M5 nut 1 2 3 4 5 6 6 Remove the suction and discharge pipes from the compressor Be sure ...

Page 341: ...ires 1 Compressor 2 Accumulator 3 Push nut 4 Vibration proof rubber 5 Two push nuts 6 Three vibration proof rubber 7 Accumulator 10 2 5 Removing high pressure switch and pressure switch for control 1 Remove the pipe cover following Removing pipe cover 2 Remove 3 fixing screws and remove the upper cover 3 Remove the front cover following Removing front cover 4 Collect the refrigerant from the check...

Page 342: ...crew to remove the 4 way valve coil 1 4 way valve 2 4 way valve coil 3 Screw NO T E DO NOT touch electrical components while the LED1 Red is ON to avoid electrical shock Wait until the LED turns off 3 1 2 10 2 7 Removing electronic expansion valve coil 1 Remove the pipe cover following Removing pipe cover 2 Remove 3 fixing screws and remove the upper cover 3 Remove the front cover following Removi...

Page 343: ...ve coil 2 Expansion valve body N OT E DO NOT touch electrical components while the LED1 Red is ON to avoid electrical shock Wait until the LED turns off 10 2 8 Removing electrical components Removing Electrical Box 1 Remove the pipe cover following Removing pipe cover 2 Remove 3 fixing screws and remove the upper cover 3 Remove the electrical box cover 4 Remove 1 fixing screw and remove the termin...

Page 344: ...rs 4 Display PCB 5 Holder 1 2 3 4 5 N O TE DO NOT touch electrical components on the PCB Pay attention not to bend or apply much force onto PCB in order to avoid PCB failure N O TE 1 To connect wiring at reassembling ensure that the terminal numbers and wiring mark band codes are matched Incorrect wiring may result in malfunction or damage of electrical components 2 Different dip switch setting sh...

Page 345: ...ve the fixing screw and remove the reactor To mount components be sure to match the wiring connection with the mark band codes 1 2 3 4 5 6 1 Electrical box cover 2 Partition plate 3 Fuse 4 Electrical box 5 Reactor 6 See the note N OT E The PCB cannot be removed from the electrical box To replace PCB the entire electrical box must be replaced DO NOT touch electrical components while the LED1 Red is...

Page 346: ...refrigerant cycle to the atmosphere for a long period to avoid moisture or dust entering into the cycle Be sure to replace parts immediately after removing Seal the refrigerant cycle when left unattached for a long period 1 Pull downward and remove the service cover after removing 3 upper and lower fixing screws Pay attention not to drop the service cover 1 Service cover 1 10 3 1 2 Remove outlet g...

Page 347: ... the upper cover following Removing upper cover 3 Remove 9 screws which fix the rear cover Pull backward and remove the rear cover Rear Cover Valve Stay Electrical Box Front Side Piping Cover Air Outlet Grille Air Outlet Grille Valve Stay Front Side Piping Cover Rear Cover Electrical Box Rear Cover Air Inlet Grille Position of Ambient Thermistor Air Inlet Grille Rear Cover Position of Ambient Ther...

Page 348: ... screws which fix the motor Model RAS 3HVNPE Connector pin location Inverter PCB CN406 Motor fixing screws 4x M5 screws with spacer 1 Motor clamp 2 Plastic tie 3 Wire 4 Motor N O TE 1 To mount the motor be sure to place the lead wire outlet downward Adjust the propeller fan and shroud not to contact with each other 2 Fix the motor lead wire onto the motor clamp using a plastic tie as shown in the ...

Page 349: ... body Removing the high pressure switch low pressure switch and pressure switch for control 5 Remove all connectors on the control PCB 6 Remove the compressor wires in the terminal box of the compressor 7 To remount the electrical box attach the electrical box fitting with the partition plate Insert the radiation fin into the U notch on the partition plate and place the fin on the fan box side The...

Page 350: ... THM8 CN100 CN1 CN6 CN7 CN101 CN404 CN2 CN8 CN5A CN405 CN406 CN10 PCN9 TP1 SK1 PCN10 PCN14 PCN13 PCN406 PCN8 PCN6 PCN100 PCN7 PCN5 C72 C71 DM1 C87 L1 1 2 L2 N Check Joint of Reversing Valve Piping Check Joint Valve Stay Sound proof Cover Valve Stay Check Joint Sound proof Cover Check Joint of Reversing Valve Piping NOTE Check Perform the recovery work at the check joint of piping If not the refrig...

Page 351: ...on Pipe Brazing Part Discharge Pipe A A Discharge Pipe Brazing Part Suction Pipe 8 Remove 1 nut which fix the compressor and remove it by lifting up Nut Vibration Proof Rubber 1 2 3 Vibration proof Rubber Nut Compressor Position 1 2 3 Vibration Proof Rubber Nut with a nut without a nut 9 When brazing the replaced compressor braze quickly cooling the pipes on the compressor side with wet cloth to a...

Page 352: ...anckase Heater Compressor When attaching the spring pay attentio not to damage the cranckase heater N O TE To prevent contamination of the refrigerant by water or foreign materials do not expose the refrigerant parts open to atmosphere for long periods If necessary seal pipe ends using caps or tape Remove the cap for compressor right before replacing the compressor When replacing the com pressor s...

Page 353: ... for PD control However check to ensure that the connector CN100 on O U PCB1 is disconnected Low pressure switch 1 Open the P plate turning counter clockwise approximately 90 following Opening electrical box P plate Check that the LED201 red on Inverter is OFF when the P plate is opened DAN GER DO NOT touch electrical components while the LED201 Red is ON to avoid electrical shock Wait until the L...

Page 354: ... coil 1 Remove the service cover the bottom service cover the rear cover and the upper cover following Removing service cover Removing bottom service cover and rear cover and Removing upper cover 2 Open the P plate turning counter clockwise approximately 90 following Opening electrical box P plate Check that the LED201 red on Inverter is OFF when the P plate is opened D ANGER DO NOT touch electric...

Page 355: ...nsion valve and pull out upward Expansion valve coil Release lock 5 When reassembling after replacing the expansion valve coil perform the procedure in the reverse way of removing The expansion valve coil is equipped with a lock mechanism After attaching the expansion valve coil rotate it until the sound of locking is heard N OTE Fix the wires by plastic bands to the original position 10 3 1 12 Re...

Page 356: ...oling the valve bodies by wet cloth b Perform the brazing work with attention not to burn the electrical wirings and the piping insulations 7 Remove reversing valve from the assemblies 4 brazing parts At this time perform the brazing work with cooling the reversing valve body by wet cloth 8 When reassembling after replacing the reversing valves perform in the reverse procedure of removing a Run th...

Page 357: ...nsulations Electronic Expansion Valve EVO Solenoid Valve SVC Brazing Part Brazing Part Electronic expansion valve Solenoid valve SVA Brazing parts Brazing parts 5 When reassembling after replacing the valves perform in the reverse procedure of removing N OTE Run the lead wires to be located to the original position and fix them by the plastic band 10 3 1 15 Removing electrical components Removing ...

Page 358: ...plate is opened D ANGER DO NOT touch electrical components while the LED201 Red is ON to avoid electrical shock Wait until the LED turns off 3 Remove all the wiring connected on the Inverter 4 Remove 4 screws which fix the Inverter Hold the wires placed at the left side 5 Pull the Inverter toward right side from the front of the pro duct Remove along with the plastic case and the radiation fin Fix...

Page 359: ...s fixing the CMC Reactor 1 Remove 4 screws fixing the reactor Noise filter 1 Remove all the wiring connected to the noise filter 2 Hold the upper part of the 6 holders with the long nose pliers and remove the noise filter Holder Long Nose Pliers Noise Filter Holder Noise filter Long nose pliers Fuse Noise filter Reactor CMC Holders Screws Holders Screws N OT E To connect wiring at reassembling ens...

Page 360: ...ong period to avoid moisture or dust entering into the cycle Be sure to replace parts immediately after removing Seal the refrigerant cycle when left unattached for a long period 1 Remove the 4 fixing screws slide the service cover downward and remove it Pay attention not to fall off the service cover Service Cover Service cover 10 3 2 2 Removing air outlet grille 1 Remove the 8 fixing screws of t...

Page 361: ...nd remove the lower part of service cover by pulling towards front side 2 Remove the upper cover according to the item Removing upper cover 3 Remove 10 screws fixing panel and remove the rear panel by pulling in the arrow direction 1 2 2 3 4 5 6 Air outlet grille Rear cover Bottom service cover Position of am bient thermistor Rear cover Air inlet grille Pull NOT E DO NOT touch electrical component...

Page 362: ...an Motor Inverter PCB CN202 Red AC Fan Motor inverter PCB CN201 White Screws for motor fixing DC Fan Motor 4 x M4 screw with spacer AC Fan Motor 4x M4 screws 1 Motor clamp 2 Fan motor lead wire 3 Plastic tie 4 DC Fan Motor 5 AC Fan Motor 1 2 3 4 5 N O TE 1 To mount the motor be sure to place the lead wire outlet downward Adjust the propeller fan and shroud not to contact with each other 2 Fix the ...

Page 363: ... body Removing the high pressure switch low pressure switch and pressure switch for control 5 Remove all connectors on the control PCB 6 Remove the compressor wires in the terminal box of the compressor 7 To remount the electrical box attach the electrical box fitting with the partition plate Insert the radiation fin into the U notch on the partition plate and place the fin on the fan box side The...

Page 364: ... the thermistor on top of the compressor Remove the soundproof cover NOTE Check the terminal codes and mark bands when discon necting the wires Connecting wires in wrong order at reassembling may result in compressor damage 5 Remove the rubber cap and the thermistor attached on top of the compressor 6 Remove the crankcase heater Wire for Compressor Closing Nut Sound Proof Cover Terminal Box Cover ...

Page 365: ...E ATTENTION not to crush to break the pipe Vibration Proof Rubber 2 Vibration Proof Rubber 1 Nut 1 2 3 4 Vibration proof Rubber 2 Vibration proof Rubber 1 Nut Fixation of the compressor to the bottom plate Compressor position 1 2 3 4 Vibration proof rubber 1 x x x x Vibration proof rubber 2 x x Nut x x 9 When brazing the replaced compressor quickly perform the brazing while the compressor side pip...

Page 366: ...crankcase heater without torsion and gap to the compressor as following figure Sound Proof Cover Closing Nut Tightening Torque 3 4N m Thermal Box Thermal Box Discharge Pipe Compressor 2 3 1 Sound Proof Cover Surely cover it Boss Hole Foot Bolt Fixing Plate Attachment of Terminal Box Surely cover it Closing Nut Tightening torque 3 4 Nm Sound proof Cover Therminal box Discharge pipe Sound proof Cove...

Page 367: ...essure switch 1 Disconnect the Faston Terminals of Low Pressure Switch 2 Remove the low pressure switch from the brazed part of suction piping Discharge Pipe Brazing Part Brazing Part Brazing Part Low Pressure Switch PSL Suction Pipe High Pressure Switch PSH Pressure Sensor for PD Control to DRM1 and SC terminals or transmission wiring Do not connect power supply 17E26270A CAUTION SC AS4755 DRM1 P...

Page 368: ...is ON to avoid electrical shock Wait until the LED turns off 10 3 2 10 Removing Reversing valve coil 1 Remove the service cover the bottom service cover the rear cover and the upper cover following Removing service cover Removing bottom service cover and rear cover and Removing upper cover D ANGER DO NOT touch electrical components while the LED1 Red is ON to avoid electrical shock Wait until the ...

Page 369: ...erform the procedure in the reverse way of removing The expansion valve coil is equipped with a lock mechanism After attaching the expansion valve coil rotate it until the sound of locking is heard NOTE Fix the wires by plastic bands to the original position 10 3 2 12 Removing solenoid valve coil SVA and SVC 1 Remove the service cover and the upper cover following Re moving service cover and Remov...

Page 370: ...ttention not to burn the electrical wirings and the piping insulations 5 Remove reversing valve from the assemblies 5 brazing parts At this time perform the brazing work with cooling the reversing valve body by wet cloth 6 When reassembling after replacing the reversing valves perform in the reverse procedure of removing a Run the lead wires to be located to the original position and fix them by t...

Page 371: ...nsion Valve EVO Brazed Parts 2 Solenoid Valve SVA Brazed Parts 2 Solenoid Valve SVC Brazed Parts 2 a Remove the electronic expansion valve and the solenoid valve with cooling the valve bodies by wet cloth b Perform the brazing work with attention not to burn the electrical wirings and the piping insulations Electronic Expansion Valve EVO Solenoid Valve SVC Brazing Part Brazing Part Electronic expa...

Page 372: ...Circuit Board PCB1 Holder Printed Circuit Board PCB1 Removing Inverter module 1 Remove the service cover following Removing service cover in this chapter 2 Open the P plate turning counter clockwise approximately 90 following Opening electrical box P plate Check that the LED201 red on Inverter is OFF when the P plate is opened D ANGER DO NOT touch electrical components while the LED201 Red is ON t...

Page 373: ...s fixing the CMC Reactor 1 Remove 4 screws fixing the reactor Noise filter 1 Remove all the wiring connected to the noise filter 2 Hold the upper part of the 6 holders with the long nose pliers and remove the noise filter Holder Long Nose Pliers Noise Filter Holder Noise filter Long nose pliers Fuse Noise filter Reactor CMC Holders Screws Holders Screws NO T E To connect wiring at reassembling ens...

Page 374: ...ng period to avoid moisture or dust entering into the cycle Be sure to replace parts immediately after removing Seal the refrigerant cycle when left unattached for a long period 1 Remove the 4 fixing screws slide the service cover downward and remove it Pay attention not to fall off the service cover Service Cover Service cover 10 3 3 2 Removing air outlet grille 1 Remove the 8 fixing screws of th...

Page 375: ...d remove the lower part of service cover by pulling towards front side 2 Remove the upper cover according to the item Removing upper cover 3 Remove 10 screws fixing panel and remove the rear panel by pulling in the arrow direction 1 2 2 3 4 5 6 Air outlet grille Rear cover Bottom service cover Position of am bient thermistor Rear cover Air inlet grille Pull NOT E DO NOT touch electrical components...

Page 376: ...n Motor Inverter PCB CN406 Red AC Fan Motor inverter PCB CN405 White Screws for motor fixing DC Fan Motor 4 x M6 screw with spacer AC Fan Motor 4x M6 screws 1 Motor clamp 2 Fan motor lead wire 3 Plastic tie 4 DC Fan Motor 5 AC Fan Motor 1 2 3 4 5 N O TE 1 To mount the motor be sure to place the lead wire outlet downward Adjust the propeller fan and shroud not to contact with each other 2 Fix the m...

Page 377: ...itch for control from the switch body Removing the high pressure switch the low pressure switch and pressure switch for control 5 Remove all connectors on the control PCB 6 Remove the compressor wires in the terminal box of the compressor 7 To remount the electrical box attach the electrical box fitting with the partition plate Insert the radiation fin into the U notch on the partition plate and p...

Page 378: ... 6 Upper cover Check joint Rear panel Cranckcase heater Rear pipe cover Valve stay 3 Open the soundproof cover wrapped around the compressor and remove the terminal box cover of the compressor body Disconnect the compressor wires in the terminal box and disconnect the thermistor on top of the compressor Remove the soundproof cover NOTE Check the terminal codes and mark bands when disconnecting the...

Page 379: ...cycle Be sure to replace the compressor immediately after removing Seal the suction and discharge pipes when the refrigerant cycle is left unattached for a long period Remove the cap of new compressor right before the replacement Before mounting the compressor seal the suction and discharge pipes with a tape to protect the compressor from dust Remove the tape when blazing the pipe For piping at re...

Page 380: ...5 6 7 Vibration proof Rubber 2 Vibration proof Rubber 1 Nut Compressor position Cover pipes with wet cloth Suction pipe Discharge pipe Fixation of the compressor to the bottom plate Compressor position 1 2 3 4 Vibration proof rubber 1 x x x x Vibration proof rubber 2 x x Nut x x 9 Reassemble the parts in the reverse order of removing procedures a Tighten the screws U V and W for compressor wires w...

Page 381: ...onnector CN100 on O U PCB1 is disconnected Low pressure switch 1 Disconnect the Faston Terminals of Low Pressure Switch 2 Remove the low pressure switch from the brazed part of suction piping Discharge pipe Brazing part Brazing part High pressure switch Pressure sen sor for control Brazing part Low pressure switch P view Suction pipe 10 3 3 9 Opening electrical box P Mounting Plate 1 Remove the se...

Page 382: ...l the LED turns off 2 Remove the connector PCN100 on the control PCB PCB1 of the electrical box 3 Remove the reversing valve coil by removing 1 screw fixing the coil 1 Upper cover 2 Power Plate 3 PCN6 4 Fixing screw for reversing valve coil 5 Reversing valve coil 6 Compressor 7 Reversing valve 8 Electrical Box 1 2 3 4 5 6 7 8 4 When reassembling perform the procedure in the reverse way of removing...

Page 383: ... original position Hold the coil of the expansion valve and pull out upward Expansion valve coil Release lock DANGER DO NOT touch electrical components while the LED201 Red or LED1 Red are ON to avoid electrical shock Wait until the LEDs turn off 10 3 3 12 Removing solenoid valve coil SVA and SVC 1 Remove the service cover following Removing service cover 2 Open the P mounting plate Check to ensur...

Page 384: ...ing work with attention not to burn the electrical wirings and the piping insulations 5 Remove reversing valve from the assemblies 5 brazing parts At this time perform the brazing work with cooling the reversing valve body by wet cloth 6 When reassembling after replacing the reversing valves perform in the reverse procedure of removing a Run the lead wires to be located to the original position an...

Page 385: ...azed parts as shown in the figures Electronic Expansion Valve EVO Brazed Parts 2 Solenoid Valve SVA Brazed Parts 2 Solenoid Valve SVC Brazed Parts 2 a Remove the electronic expansion valve and the solenoid valve with cooling the valve bodies by wet cloth b Perform the brazing work with attention not to burn the electrical wirings and the piping insulations Electronic expan sion valve Solenoid valv...

Page 386: ...or apply much force onto PCB in order to avoid PCB failure Holder Long Nose Pliers Noise Filter Holder Noise filter Long nose pliers Holder Printed Circuit Board PCB1 Printed Circuit Board PCB3 Holder Removing Inverter module 1 Remove the service cover following Removing service cover 2 Open the P plate turning counter clockwise approximately 90 following Opening electrical box P plate Check that ...

Page 387: ...ansistor module 4 Remove 4 M4 fixing screws on the transistor module 5 Remove the transistor module from the electrical box 1 Screws for transistor module M4 2 Screw M5 3 PCN301 4 PCN302 5 Screws for PCB M3 6 CN3 7 Inverter PCB 8 CN206 9 CN2 10 LED201 6 Reassemble the parts in the reverse order of removing order N O T E To connect wiring at reassembling ensure that the terminal numbers and wiring ...

Page 388: ...ted to the capacitors NO T E The wires have polar characters Identify the wire mark band and the indication on the capacitor when connecting wires 2 Remove 3 screws fixing each capacitor CMC 1 Remove all the wiring connected to CMC 2 Remove 2 screws fixing the CMC Reactor 1 Remove 4 screws fixing the reactor Noise filter 1 Remove all the wiring connected to the noise filter 2 Hold the upper part o...

Page 389: ...or a long period to avoid moisture or dust entering into the cycle Be sure to replace parts immediately after removing Seal the refrigerant cycle when left unattached for a long period 1 Remove the 5 fixing screws slide the service cover downward and remove it Pay attention not to fall off the service cover Service cover 10 3 4 2 Removing air outlet grille 1 Remove the 8 fixing screws of the shrou...

Page 390: ... remove the lower part of service cover by pulling towards front side 2 Remove the upper cover according to the item Removing upper cover 3 Remove 10 screws fixing panel and remove the rear panel by pulling in the arrow direction 1 2 2 3 4 5 6 Air outlet grille Rear cover Bottom service cover Position of am bient thermistor Rear cover Air inlet grille Pull NOTE DO NOT touch electrical components w...

Page 391: ...mp Nº DC Fan Motor Inverter PCB CN406 Red AC Fan Motor inverter PCB PCN404 White Screws for motor fixing DC Fan Motor 4 x M6 screw with spacer AC Fan Motor 4x M8 screws Motor clamp Fan motor lead wire Plastic tie Cord clamp Fan motor Plastic tie N O T E 1 To mount the motor be sure to place the lead wire outlet downward Adjust the propeller fan and shroud not to contact with each other 2 Fix the m...

Page 392: ...e coil from the solenoid valve Removing solenoid valve coil 4 Remove the Faston terminals of high low pressure switch and the pressure switch for control from the switch body Removing the high pressure switch the low pressure switch and pressure switch for control 5 Remove all connectors on the control PCB 6 Remove the compressor wires in the terminal box of the compressor 7 To remount the electri...

Page 393: ... 1 2 3 4 5 6 Upper cover Check joint Rear panel Cranckcase heater Rear pipe cover Valve stay 3 Open the soundproof cover wrapped around the compressor and remove the terminal box cover of the compressor body Disconnect the compressor wires in the terminal box and disconnect the thermistor on top of the compressor Remove the soundproof cover NOTE Check the terminal codes and mark bands when disconn...

Page 394: ...cle Be sure to replace the compressor immediately after removing Seal the suction and discharge pipes when the refrigerant cycle is left unattached for a long period Remove the cap of new compressor right before the replacement Before mounting the compressor seal the suction and discharge pipes with a tape to protect the compressor from dust Remove the tape when blazing the pipe For piping at reas...

Page 395: ...4 5 6 7 Vibration proof Rubber 2 Vibration proof Rubber 1 Nut Compressor position Cover pipes with wet cloth Suction pipe Discharge pipe Fixation of the compressor to the bottom plate Compressor position 1 2 3 4 Vibration proof rubber 1 x x x x Vibration proof rubber 2 x x Nut x x 9 Reassemble the parts in the reverse order of removing procedures a Tighten the screws U V and W for compressor wires...

Page 396: ... switch 1 Disconnect the Faston Terminals of Low Pressure Switch 2 Remove the low pressure switch from the brazed part of suction piping Discharge pipe Electrical Box Upper cover High pressure switch Pressure sensor for PD control Brazing part Rear cover Brazing part Suction pipe Brazing part Low pressure switch Brazing part Low pressure switch Pressure sensor for control High pressure switch Open...

Page 397: ...the electrical box according to the following picture 3 Remove the valve coils by removing 1 fixing screw for each coil PCB Hold the coil of the SVA and pull out upward Reversing valve coil Hold the coil of the reversing valve and pull out to the right Hold the coil of the SVF and pull out upward Fixing screws Rear cover Upper cover Electrical box Hold the coil of the SVC and pull out upward P vie...

Page 398: ...onnect the CN5A connector on the control PCB1 of the electrical box 4 Hold the coil of the expansion valve and pull out upward It is easier to remove the expansion valve coil if it is rotated while pulling it upward 5 When reassembling after replacing the expansion valve coil perform the procedure in the reverse way of removing The expansion valve coil is equipped with a lock mechanism After attac...

Page 399: ...attention not to burn the electrical wirings and the piping insulations 5 Remove reversing valve from the assemblies 5 brazing parts and 1 flare connection At this time perform the brazing work with cooling the reversing valve body by wet cloth 6 When reassembling after replacing the reversing valve perform in the reverse procedure of removing a Run the lead wires to be located to the original pos...

Page 400: ...ve Coil and Removing Reversing and Solenoid Valves Coils Removing electronic expansion valve 1 Remove the brazed parts as shown in the figure Electronic Expansion Valve EVO Brazed Parts 2 a Remove the electronic expansion valve with cooling the valve bodies by wet cloth b Perform the brazing work with attention not to burn the electrical wirings and the piping insulations Electronic expansion valv...

Page 401: ...s by wet cloth b Perform the brazing work with attention not to burn the electrical wirings and the piping insulations c Perform the flare connection work using two span ners to avoid twisting pipes Brazing part P view Solenoid valve SVF Solenoid valve SVA Solenoid valve SVC Brazing part Flare nut Flare nut Brazing part 2 When reassembling after replacing the valves perform in the reverse procedur...

Page 402: ...not to bend or apply much force onto PCB in order to avoid PCB failure Holder Printed Circuit Board PCB1 Holder Printed Circuit Board PCB1 Removing Inverter module 1 Remove the service cover following Removing service cover 2 Open the P plate turning counter clockwise approximately 90 following Opening electrical box P plate Check that the LED201 red on Inverter is OFF when the P plate is opened D...

Page 403: ...istor module 2 Remove the connectors CN2 CN3 CN206 PCN301 and PCN302 from the transistor module 3 Disconnect the wirings of P N U V W on the transistor module 4 Remove 4 M4 fixing screws on the transistor module 5 Remove the transistor module from the electrical box 1 Screws for transistor module M4 2 Screw M5 3 PCN301 4 PCN302 5 Screws for PCB M3 6 CN3 7 Inverter PCB 8 CN206 9 CN2 10 LED201 6 Rea...

Page 404: ...at reassembling ensure that the terminal numbers and wiring mark band codes are mat ched If connections are wrong there is the possibility of wrong operation and to cause damage to electrical parts From the Power Wires U Phase V Phase W Phase of Inverter Compressor MC1 please make sure that the 2 wires of U Phase and V Phase pass through the current sensors CTU CTV of Inverter PCB PWB3 Also make s...

Page 405: ...e the refrigerant cycle to the atmosphere for a long period to avoid moisture or dust entering into the cycle Be sure to replace parts immediately after removing Seal the refrigerant cycle when left unattached for a long period 1 Pull downward and remove the service cover after removing 3 upper and lower fixing screws Pay attention not to drop the service cover 1 Service cover 1 10 4 1 2 Remove ou...

Page 406: ...the upper cover following Removing upper cover 3 Remove 9 screws which fix the rear cover Pull backward and remove the rear cover Rear Cover Valve Stay Electrical Box Front Side Piping Cover Air Outlet Grille Air Outlet Grille Valve Stay Front Side Piping Cover Rear Cover Electrical Box Rear Cover Air Inlet Grille Position of Ambient Thermistor Air Inlet Grille Rear Cover Position of Ambient Therm...

Page 407: ...ove 4 screws which fix the motor Model RAS 4 6 H V NCE Connector pin location Inverter PCB CN202 Motor fixing screws 4x M5 screws 1 Motor clamp 2 Plastic tie 3 Wire 4 Motor N O T E 1 To mount the motor be sure to place the lead wire outlet downward Adjust the propeller fan and shroud not to contact with each other 2 Fix the motor lead wire onto the motor clamp using a plastic tie as shown in the t...

Page 408: ...body Removing the high pressure switch low pressure switch and pressure switch for control 5 Remove all connectors on the control PCB 6 Remove the compressor wires in the terminal box of the compressor 7 To remount the electrical box attach the electrical box fitting with the partition plate Insert the radiation fin into the U notch on the partition plate and place the fin on the fan box side Then...

Page 409: ...M10 THM7 THM8 CN100 CN1 CN6 CN7 CN101 CN404 CN2 CN8 CN5A CN405 CN406 CN10 PCN9 TP1 SK1 PCN10 PCN14 PCN13 PCN406 PCN8 PCN6 PCN100 PCN7 PCN5 C72 C71 DM1 C87 L1 1 2 L2 N Check Joint of Reversing Valve Piping Check Joint Valve Stay Sound proof Cover Valve Stay Check Joint Sound proof Cover Check Joint of Reversing Valve Piping NOTE Check Perform the recovery work at the check joint of piping If not th...

Page 410: ...roof Rubber Nut Compressor Position 1 2 3 Vibration Proof Rubber Nut with a nut without a nut 9 When brazing the replaced compressor braze quickly cooling the pipes on the compressor side with wet cloth to avoid the filler metal entering into the compressor NOTE PAY CLOSE ATTENTION not to let the filler metal enter into the compressor which may result in compressor damage 10 Perform in the reverse...

Page 411: ...xpose the refrigerant parts open to atmosphere for long periods If necessary seal pipe ends using caps or tape Remove the cap for compressor right before replacing the compressor When replacing the com pressor seal the tape at the suction and the discharge pipes to prevent foreign materials Remove it when brazing pipes Securely check terminal numbers and mark bands before disconnecting lead wires ...

Page 412: ...ires in the terminal box and dis connect the thermistor on top of the compressor Remove the soundproof cover NOTE Check the terminal codes and mark bands when discon necting the wires Connecting wires in wrong order at reassembling may result in compressor damage 6 Remove the rubber cap and the thermistor attached on top of the compressor 7 Remove the crankcase heater Wire for Compressor Closing N...

Page 413: ... ATTENTION not to crush to break the pipe Vibration Proof Rubber 2 Vibration Proof Rubber 1 Nut 1 2 3 4 Vibration proof Rubber 2 Vibration proof Rubber 1 Nut Fixation of the compressor to the bottom plate Compressor position 1 2 3 4 Vibration proof rubber 1 x x x x Vibration proof rubber 2 x x Nut x x 10 When brazing the replaced compressor quickly perform the brazing while the compressor side pip...

Page 414: ...crankcase heater without torsion and gap to the compressor as following figure Sound Proof Cover Closing Nut Tightening Torque 3 4N m Thermal Box Thermal Box Discharge Pipe Compressor 2 3 1 Sound Proof Cover Surely cover it Boss Hole Foot Bolt Fixing Plate Attachment of Terminal Box Surely cover it Closing Nut Tightening torque 3 4 Nm Sound proof Cover Therminal box Discharge pipe Sound proof Cove...

Page 415: ...the brazed part of discharge piping Discharge pipe Electrical Box Upper cover High pressure switch Pressure sensor for PD control Brazing part RAS 5 6 H V NCE 1 Remove the service cover the bottom service cover and rear cover following Removing service cover and Removing bottom service cover and rear cover 2 Collect the refrigerant from the check joint according to Removing the compressor in this ...

Page 416: ...screws 2 Fixing screws D ANGER DO NOT touch electrical components while the LED201 Red is ON to avoid electrical shock Wait until the LED turns off 10 4 1 10 Removing Reversing valve coil 1 Remove the service cover the bottom service cover the rear cover and the upper cover following Removing service cover Removing bottom service cover and rear cover and Removing upper cover 2 Disconnect the PCN6 ...

Page 417: ...to the original position Expansion Valve Coil Release Lock Pull the expansion valve coil upward with holding Hold the coil of the expansion valve and pull out upward Expansion valve coil Release lock DANGER DO NOT touch electrical components while the LED1 Red is ON to avoid electrical shock Wait until the LED turns off 10 4 1 12 Removing solenoid valve coil SVA 1 Remove the service cover and the ...

Page 418: ... stay 8 Remove the reversing valve assemblies from the fixed positions 4 brazing parts a Remove the reversing valve and the stop valve with cooling the valve bodies by wet cloth b Perform the brazing work with attention not to burn the electrical wirings and the piping insulations 9 Remove reversing valve from the assemblies 4 brazing parts At this time perform the brazing work with cooling the re...

Page 419: ...b Perform the brazing work with attention not to burn the electrical wirings and the piping insulations 5 When reassembling after replacing the valves perform in the reverse procedure of removing NOTE Run the lead wires to be located to the original position and fix them by the plastic band 10 4 1 15 Removing electrical components Removing control PCB PCB1 1 Remove the service cover following Remo...

Page 420: ...late is opened D ANGER DO NOT touch electrical components while the LED201 Red is ON to avoid electrical shock Wait until the LED turns off 3 Remove all the wiring connected on the Inverter 4 Remove 4 screws which fix the Inverter Hold the wires placed at the bottom side 5 Pull the Inverter toward right side from the front of the pro duct Remove along with the plastic case and the radiation fin Fi...

Page 421: ...s fixing the CMC Reactor 1 Remove 4 screws fixing the reactor Noise filter 1 Remove all the wiring connected to the noise filter 2 Hold the upper part of the 6 holders with the long nose pliers and remove the noise filter Holder Long Nose Pliers Noise Filter Holder Noise filter Long nose pliers Fuse Noise filter Reactor CMC Holders Screws Holders Screws NO T E To connect wiring at reassembling ens...

Page 422: ...ng period to avoid moisture or dust entering into the cycle Be sure to replace parts immediately after removing Seal the refrigerant cycle when left unattached for a long period 1 Remove the 4 fixing screws slide the service cover downward and remove it Pay attention not to fall off the service cover Service Cover Service cover 10 4 2 2 Removing air outlet grille 1 Remove the 8 fixing screws of th...

Page 423: ...d remove the lower part of service cover by pulling towards front side 2 Remove the upper cover according to the item Removing upper cover 3 Remove 10 screws fixing panel and remove the rear panel by pulling in the arrow direction 1 2 2 3 4 5 6 Air outlet grille Rear cover Bottom service cover Position of am bient thermistor Rear cover Air inlet grille Pull NOT E DO NOT touch electrical components...

Page 424: ...n Motor Inverter PCB CN406 Red AC Fan Motor inverter PCB CN405 White Screws for motor fixing DC Fan Motor 4 x M6 screw with spacer AC Fan Motor 4x M6 screws 1 Motor clamp 2 Fan motor lead wire 3 Plastic tie 4 DC Fan Motor 5 AC Fan Motor 1 2 3 4 5 N O TE 1 To mount the motor be sure to place the lead wire outlet downward Adjust the propeller fan and shroud not to contact with each other 2 Fix the m...

Page 425: ...ressure switch for control from the switch body Removing the high pressure switch and pressure switch for control 5 Remove all connectors on the control PCB 6 Remove the compressor wires in the terminal box of the compressor 7 To remount the electrical box attach the electrical box fitting with the partition plate Insert the radiation fin into the U notch on the partition plate and place the fin o...

Page 426: ... 2 3 4 5 6 Upper cover Check joint Rear panel Cranckcase heater Rear pipe cover Valve stay 3 Open the soundproof cover wrapped around the compressor and remove the terminal box cover of the compressor body Disconnect the compressor wires in the terminal box and disconnect the thermistor on top of the compressor Remove the soundproof cover NOTE Check the terminal codes and mark bands when disconnec...

Page 427: ...cycle Be sure to replace the compressor immediately after removing Seal the suction and discharge pipes when the refrigerant cycle is left unattached for a long period Remove the cap of new compressor right before the replacement Before mounting the compressor seal the suction and discharge pipes with a tape to protect the compressor from dust Remove the tape when blazing the pipe For piping at re...

Page 428: ...5 6 7 Vibration proof Rubber 2 Vibration proof Rubber 1 Nut Compressor position Cover pipes with wet cloth Suction pipe Discharge pipe Fixation of the compressor to the bottom plate Compressor position 1 2 3 4 Vibration proof rubber 1 x x x x Vibration proof rubber 2 x x Nut x x 9 Reassemble the parts in the reverse order of removing procedures a Tighten the screws U V and W for compressor wires w...

Page 429: ... the brazed part of discharge piping Discharge pipe Brazing part Brazing part High pressure switch Pressure sensor for control 10 4 2 9 Opening electrical box P Mounting Plate 1 Remove the service cover following Removing service cover in this chapter 2 Remove 6 screws which fix the electrical box and open the P plate turning counter clockwise approximately 90 Check that the LED201 red on the inve...

Page 430: ...il the LED turns off 2 Remove the connector PCN6 on the control PCB PCB1 of the electrical box 3 Remove the reversing valve coil by removing 1 screw fixing the coil 1 Upper cover 2 Power Plate 3 PCN6 4 Fixing screw for reversing valve coil 5 Reversing valve coil 6 Compressor 7 Reversing valve 8 Electrical Box 1 2 3 4 5 6 7 8 4 When reassembling perform the procedure in the reverse way of removing ...

Page 431: ...Fix the wires by plastic bands to the original position Hold the coil of the expansion valve and pull out upward Expansion valve coil Release lock DANGER DO NOT touch electrical components while the LED201 Red or LED1 Red are ON to avoid electrical shock Wait until the LEDs turn off 10 4 2 12 Removing solenoid valve coil SVA 1 Remove the service cover following Removing service cover 2 Open the P ...

Page 432: ...Perform the brazing work with attention not to burn the electrical wirings and the piping insulations 5 Remove reversing valve from the assemblies 4 brazing parts At this time perform the brazing work with cooling the reversing valve body by wet cloth 6 When reassembling after replacing the reversing valves perform in the reverse procedure of removing a Run the lead wires to be located to the orig...

Page 433: ... Solenoid Valve Coil 4 Remove the brazed parts as shown in the figures Electronic Expansion Valve EVO Brazed Parts 2 Solenoid Valve SVA Brazed Parts 2 a Remove the electronic expansion valve and the so lenoid valve with cooling the valve bodies by wet cloth b Perform the brazing work with attention not to burn the electrical wirings and the piping insulations Electronic expan sion valve Solenoid v...

Page 434: ...or apply much force onto PCB in order to avoid PCB failure Holder Long Nose Pliers Noise Filter Holder Noise filter Long nose pliers Holder Printed Circuit Board PCB1 Printed Circuit Board PCB3 Holder Removing Inverter module 1 Remove the service cover following Removing service cover 2 Open the P plate turning counter clockwise approximately 90 following Opening electrical box P plate Check that ...

Page 435: ...ransistor module 4 Remove 4 M4 fixing screws on the transistor module 5 Remove the transistor module from the electrical box 1 Screws for transistor module M4 2 Screw M5 3 PCN301 4 PCN302 5 Screws for PCB M3 6 CN3 7 Inverter PCB 8 CN206 9 CN2 10 LED201 6 Reassemble the parts in the reverse order of removing order N OT E To connect wiring at reassembling ensure that the terminal numbers and wiring ...

Page 436: ...ted to the capacitors NO T E The wires have polar characters Identify the wire mark band and the indication on the capacitor when connecting wires 2 Remove 3 screws fixing each capacitor CMC 1 Remove all the wiring connected to CMC 2 Remove 2 screws fixing the CMC Reactor 1 Remove 4 screws fixing the reactor Noise filter 1 Remove all the wiring connected to the noise filter 2 Hold the upper part o...

Page 437: ...or a long period to avoid moisture or dust entering into the cycle Be sure to replace parts immediately after removing Seal the refrigerant cycle when left unattached for a long period 1 Remove the 5 fixing screws slide the service cover downward and remove it Pay attention not to fall off the service cover Service cover 10 4 3 2 Removing air outlet grille 1 Remove the 8 fixing screws of the shrou...

Page 438: ... remove the lower part of service cover by pulling towards front side 2 Remove the upper cover according to the item Removing upper cover 3 Remove 10 screws fixing panel and remove the rear panel by pulling in the arrow direction 1 2 2 3 4 5 6 Air outlet grille Rear cover Bottom service cover Position of am bient thermistor Rear cover Air inlet grille Pull NOTE DO NOT touch electrical components w...

Page 439: ...omp Nº DC Fan Motor Inverter PCB CN406 Red AC Fan Motor inverter PCB PCN404 White Screws for motor fixing DC Fan Motor 4 x M6 screw with spacer AC Fan Motor 4x M8 screws Motor clamp Fan motor lead wire Plastic tie Cord clamp Fan motor Plastic tie N OT E 1 To mount the motor be sure to place the lead wire outlet downward Adjust the propeller fan and shroud not to contact with each other 2 Fix the m...

Page 440: ... solenoid valve coil from the solenoid valve Removing solenoid valve coil 4 Remove the Faston terminals of high pressure switch and the pressure switch for control from the switch body Removing the high pressure switch and pressure switch for control 5 Remove all connectors on the control PCB 6 Remove the compressor wires in the terminal box of the compressor 7 To remount the electrical box attach...

Page 441: ...3 4 5 6 Upper cover Check joint Rear panel Cranckcase heater Rear pipe cover Valve stay 3 Open the soundproof cover wrapped around the compressor and remove the terminal box cover of the compressor body Disconnect the compressor wires in the terminal box and disconnect the thermistor on top of the compressor Remove the soundproof cover N OTE Check the terminal codes and mark bands when disconnecti...

Page 442: ...cle Be sure to replace the compressor immediately after removing Seal the suction and discharge pipes when the refrigerant cycle is left unattached for a long period Remove the cap of new compressor right before the replacement Before mounting the compressor seal the suction and discharge pipes with a tape to protect the compressor from dust Remove the tape when blazing the pipe For piping at reas...

Page 443: ... 4 5 6 7 Vibration proof Rubber 2 Vibration proof Rubber 1 Nut Compressor position Cover pipes with wet cloth Suction pipe Discharge pipe Fixation of the compressor to the bottom plate Compressor position 1 2 3 4 Vibration proof rubber 1 x x x x Vibration proof rubber 2 x x Nut x x 9 Reassemble the parts in the reverse order of removing procedures a Tighten the screws U V and W for compressor wire...

Page 444: ...ch Pressure sensor for control Discharge pipe Suction pipe Low pressure switch Brazing part Upper cover Electrical box Rear box Brazing part High pressure switch Pressure sensor for control 10 4 3 8 Opening electrical box P Mounting Plate 1 Remove the service cover following Removing service cover in this chapter 2 Remove 5 screws which fix the electrical box and open the P plate turning counter c...

Page 445: ...ectors on the control PCB PCB1 of the electrical box according to the following picture 3 Remove the valve coils by removing 1 fixing screw for each coil PCB Hold the coil of the SVA and pull out upward Reversing valve coil Hold the coil of the reversing valve and pull out to the right Hold the coil of the SVF and pull out upward Fixing screws Rear cover Upper cover Electrical box 4 When reassembl...

Page 446: ...onnect the CN5A connector on the control PCB1 of the electrical box 4 Hold the coil of the expansion valve and pull out upward It is easier to remove the expansion valve coil if it is rotated while pulling it upward 5 When reassembling after replacing the expansion valve coil perform the procedure in the reverse way of removing The expansion valve coil is equipped with a lock mechanism After attac...

Page 447: ...zing work with attention not to burn the electrical wirings and the piping insulations 5 Remove reversing valve from the assemblies 4 brazing parts and 1 flare connection At this time perform the brazing work with cooling the reversing valve body by wet cloth 6 When reassembling after replacing the reversing valve perform in the reverse procedure of removing a Run the lead wires to be located to t...

Page 448: ...ations Electronic expansion valve Brazing parts 2 When reassembling after replacing the valves perform in the reverse procedure of removing NOTE Run the lead wires to be located to the original position and fix them by the plastic band Removing solenoid valves 1 Remove the brazed parts and the flare connections as shown in the figures Solenoid Valve SVA Brazed Parts 2 Solenoid Valve SVC Brazed Par...

Page 449: ... not to bend or apply much force onto PCB in order to avoid PCB failure Holder Printed Circuit Board PCB1 Holder Printed Circuit Board PCB1 Removing Inverter module 1 Remove the service cover following Removing service cover 2 Open the P plate turning counter clockwise approximately 90 following Opening electrical box P plate Check that the LED201 red on Inverter is OFF when the P plate is opened ...

Page 450: ...stor module 2 Remove the connectors CN2 CN3 CN206 PCN301 and PCN302 from the transistor module 3 Disconnect the wirings of P N U V W on the transistor module 4 Remove 4 M4 fixing screws on the transistor module 5 Remove the transistor module from the electrical box 1 Screws for transistor module M4 2 Screw M5 3 PCN301 4 PCN302 5 Screws for PCB M3 6 CN3 7 Inverter PCB 8 CN206 9 CN2 10 LED201 6 Reas...

Page 451: ... at reassembling ensure that the terminal numbers and wiring mark band codes are mat ched If connections are wrong there is the possibility of wrong operation and to cause damage to electrical parts From the Power Wires U Phase V Phase W Phase of Inverter Compressor MC1 please make sure that the 2 wires of U Phase and V Phase pass through the current sensors CTU CTV of Inverter PCB PWB3 Also make ...

Page 452: ......

Page 453: ...ansion valve 447 11 4 High pressure protection device 448 11 5 Noise filter NF 450 11 5 1 Noise filter for 3N 400V 50Hz 450 11 5 2 Noise filter for 1 230V 50Hz 451 11 6 Capacitor CB1 CB2 452 11 7 Reactor DCL 453 11 7 1 Reactor DCL for 3N 400V 50Hz 453 11 7 2 Reactor DCL for 1 230V 50Hz 453 11 8 Scroll compressor 454 11 8 1 Reliable mechanism for low vibrating and low sound 454 11 8 2 Principle of ...

Page 454: ...Phase 230V 50 Hz Output current 24 0A 16 0A 45 0A 10 5A 16 0A 24 0A 16 0A Control Method Vector control Range output frequency 20 115HZ 31 115HZ 20 115HZ 15 115HZ Accuracy of frequency 0 01Hz at applicable frequency range Output characteristics Conditions 1 Power source voltage AC380 415V 2 Non loading free output 3 Ammeter type volt meter X1 1 Conditions 1 Power source voltage AC220 240V 2 Non lo...

Page 455: ... the rated current Rated current x 150 Rated current x 105 1 Short circuit trip of arm 2 Instantaneous overcurrent trip 3 Instantaneous overcurrent trip 4 Electronic thermal trip Internal protection IPM Condition is maintained longer than 30 seconds or accumulated longer than 3 minutes during 10 minutes sampling time Protection of transistor mo dule IPM has four protection function for self protec...

Page 456: ...on Output Voltage Soft Start Stop Frequency Failure Signal Activation of Protection Device Overload Signal Charged Indication LED5 RED Turn ON 10sec Activation of Recovery Transmitting Error 30sec Activation of Protection Output Frequency HIGH Frequency LOW All bit 1 All bit 1 Operation The changing speed depends on command from PCB ...

Page 457: ...el of detection When the current detected by current sensor reaches 150 of the rated current overcurrent is detected Instanta neous overcurrent When the current detected by current sensor exceeds 105 of the rated current continuously for 30 seconds or for 3 5 minutes in total during a 10 minutes period overcurrent is detected Electric thermal relay b Function When abnormalities are detected the in...

Page 458: ...essor is stopped and the signal code of stoppage cause is transmitted to PCB1 c Cancellation of protection function Transmission for signal code of stoppage cause is cancelled when a stopping order is issued or main power source is cut off 11 1 4 Overload control 1 Level of detection When the output current exceeds 105 of the maximum output current an abnormality is detected 2 Function An overload...

Page 459: ...CN5 C72 C71 DM1 C87 L1 1 2 L2 N Thermistor for Evaporating Temperature Thermistor for Discharge Gas Temperature Thermistor for Outdoor Ambient Temperature Thermistor for dis charge gas tempe rature THM9 Thermistor for evaporating tem perature THM8 Thermistor for outdoor ambient temperature THM7 Thermistor for upper part temperature of compressor For prevention of discharge gas overheating 1 A ther...

Page 460: ...inuously Defrosting Over 132 ºC 5 seconds continuously Thermistor for outdoor ambient temperature The thermistor resistance characteristics are shown in the figure below Thermistor for evaporating temperature of outdoor unit in heating operation for defrosting The characteristics for the thermistor is the same with the value of outdoor ambient temperature thermistor as shown in the figure below 90...

Page 461: ...UKV series Refrigerant R410A Working temperature range 30 C 70 C operation time of the coil less than 50 Mounting direction Drive shaft in vertical direction within an angle of 45 C as maximum Flow direction Reversible Drive method 4 Phase canned motor method Rated voltage DC12V 1 8 V Drive condition 63PPS 1 2 phase excitation Coil resistance each phase 46Ω 10 at 20 C Wiring diagram drive circuit ...

Page 462: ...harge pipe Electrical Box Upper cover High pressure switch Pressure sensor for PD control Brazing part Low pressure switch Suction pipe Brazing part Discharge Pipe Brazing Part Brazing Part Brazing Part Low Pressure Switch PSL Suction Pipe High Pressure Switch PSH Pressure Sensor for PD Control to DRM1 and SC terminals or transmission wiring Do not connect power supply 17E26270A CAUTION SC AS4755 ...

Page 463: ...e sen sor for control Brazing part Low pressure switch P view Suction pipe Discharge pipe Brazing part Brazing part High pressure switch Pressure sen sor for control RAS 12HNP RAS 12HNC Discharge pipe Electrical Box Upper cover High pressure switch Pressure sensor for PD control Brazing part Rear cover Brazing part Suction pipe Brazing part Low pressure switch Electrical Box Upper cover Rear cover...

Page 464: ...ecreases the leakage of noise made by the inverter to the power supply side Terminals indicated with LOAD are connected to the inverter side and terminals indicated with LINE to the power supply side Items Specifications Model 4LFB 16830 2FA Rated current AC415V 27 A Permissible temperature range 25 ºC to 85 ºC Circuit diagram Load Line ...

Page 465: ... the leakage of noise made by the inverter to the power supply side Terminals indicated with LOAD are connected to the inverter side and terminals indicated with LINE to the power supply side Items Specifications Model LFB 14930 3M Rated current AC230V 30 A Permissible temperature range 25 ºC to 85 ºC Circuit diagram Load Line ...

Page 466: ...2 This part is used for changing the alternative current to the direct current for the inverter Connect two capacitor in line and used Items Specifications Models LNX2G472MSEAHE Capacity of static electricity 4700 μF Rated voltage 400 VDC Permissible temperature range 25 ºC to 95 ºC ...

Page 467: ...ms Specifications Character 1 0 mH 10 at 1 kHz Rated current 30 A Direct resistance 22 8 mΩ 20 at 20 C Permissible temperature range 20 ºC to 60 ºC 11 7 2 Reactor DCL for 1 230V 50Hz This part is used for changing the alternative current to the direct current for the inverter Items Specifications Character 0 5 mH 15 at 1 kHz Rated current 30 A DC Resistance 26 mΩ at 20 C Permissible temperature ra...

Page 468: ...is inhaled from the inlet port at the outer frame of the fixed scroll 2 The gas inside of the compression space is compressed toward the center of the scroll 3 The compression space is minimum at the center of the scroll and the gas compressed at the maximum is discharged from the outlet port of at the center of the scroll 4 The above procedures suction compression discharge is repeated continuous...

Page 469: ... applied 457 12 1 4 Abnormally high operation sound in the ceiling type indoor unit 457 12 1 5 Alarm code 31 458 12 1 6 Not cooling well due to insufficient installation space for the outdoor unit 458 12 2 Maintenance work 459 12 3 Service and maintenance record 460 12 4 Service and maintenance record using the 7 segment display 461 12 5 Service and maintenance record by remote control switch 463 ...

Page 470: ...tion and answer for the field work Example 1 Burnt out compressor due to an insufficient refrigerant charge Phenomenon After commissioning the alarm code 08 sometimes occurred and the compressors were burnt out after operating for two months Cause The refrigerant piping work was performed during the summer season The additional refrigerant was not sufficiently charged from the discharge gas side T...

Page 471: ...re The setting of the DSW2 was changed Remarks Pay special attention to the size of liquid pipe Refer to Piping work and refrigerant charge chapter for details 12 1 4 Abnormally high operation sound in the ceiling type indoor unit Question and answer for the field work Example 3 Abnormally high operation sound in the ceiling type indoor unit Phenomenon The operation sound at the HIGH speed was abn...

Page 472: ...he outdoor units were installed without a sufficient installation space the hot discharge air from other outdoor units was circulated In this case though the outdoor temperature was 35 C the actual suction air temperature was nearly 50 C and protection system from excessively high suction pressure was activated the frequency of the compressor was decreased and the cooling capacity was also decreas...

Page 473: ...erial Check for any peeled thermal insulator on the cabinet Repair the thermal insulator 5 Electrical equipment Activation Check for an abnormal activation of the magnetic contactor the auxiliary relay the PCB and others Line condition Pay attention to the working voltage the working amperage and the working phase balance Check for any faulty contact that is caused by the loosened terminal connect...

Page 474: ...Not Good 17 Check for a leakage in the check valve ditto Good No Good 18 Check for a leakage in the accumulator ditto Good Not Good 19 Check for a leakage in the strainer ditto Good Not Good 20 Check for a leakage in the electronic expansion valve ditto Good Not Good 21 Check for a leakage in the piping ditto Good Not Good 22 Check the direction of the fans By viewing the airflow volume Good Not G...

Page 475: ... Fo 4 8 O U expansion valve opening Eo 4 9 Temp at the top of compressor Td 4 10 Evaporating temp at heating TE 4 11 Ambient air temp To 4 12 Cause of stoppage at inverter iT 4 13 Inverter secondary current A2 4 14 Inverter fin temperature TF 4 15 O U address nA 5 Indoor unit unit No 1 5 1 I U expansion valve opening EA 5 2 Liquid pipe temp of I U Free ze protection LA 5 3 I U intake air temp iA 5...

Page 476: ...Serial No 8 2 Liquid pipe temp of I U Free ze protection LA 8 3 I U intake air temp iA 8 4 I U discharge air temp oA 8 5 Cause of I U stoppage dA N OT E O U Outdoor Unit I U Indoor unit FAN1 FAN2 Constant speed fan 52C CMC PSH High pressure switch 20A Solenoid valve SVA 20F Solenoid valve SFV 21 Reversing valve RVR CH Oil heater Multiply 1 8 by the code on the 7 segment ...

Page 477: ... bb C Micro computer state indication I U micro computer C1 O U micro computer C2 D Stopping cause state indication Stopping cause state indication d1 E Alarm occurrence Times of abnormality E1 Times of power failure E2 Times of abnormal transmitting E3 Times of inverter tripping E4 F Automatic louver state Louver sensor state F1 H Pressure frequency state indication Discharge pressure H1 99 Sucti...

Page 478: ...he check valve may cause an incorrect brazing due to the gas pressure at the brazing of the discharge piping If the compressor replacing mode is performed again set the DSW4 4 to OFF and keep the DSW4 4 at the OFF side during ten minutes Then start according to the procedure No 6 10 Collect the refrigerant by means of the refrigerant collection Perform either A or B depending on the process 10 The...

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Page 480: ...dance with the standard ISO 14001 of AENOR Spain for its Environmental Management systems accordance with the standard Hitachi certifies that our products have met EU consumer safety health and environmental requirements Hitachi Air Conditioning Products Europe S A Ronda Shimizu 1 Polig Ind Can Torrella 08233 Vacarisses Barcelona Spain HITACHI participates in the Eurovent Certification Programme t...

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