Hitachi RWM-(H)FSN3E Service Manual Download Page 400

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12 Troubleshooting

SMGB0070 rev. 1 - 08/2011

390

Alarm code

Thermostat Heater Alarm

•

The alarm code is displayed on the LCD User interface.

•

The alarm code is displayed on the seven segments of the indoor unit PCB.

•

This alarm code is displayed when electrical heater’s thermal protection is open (>75ºC).

Reset the thermal

protector by

pressing reset

button

Is the electri-

cal heater

thermostat (THe)

open?

Check the reset button on

the thermal protector. If

button is ON a pre-set (and

there is continuity between

terminals), but the Electrical

Heater continues OFF.

Yes

Check Electrical

Heater thermal

fuse

Yes

Has the

Thermal fuse

blown?

Have the

Electrical fuses

(EF1/2/3) blown?

Contact your local dealer

Yes

Contact your local dealer

Yes

Replace fuses

Alarm control procedure:

Switch OFF Outdoor and Indoor Units

Electrical Heater Disabled

Water pumps continue running up to water <55ºC.

Summary of Contents for RWM-(H)FSN3E

Page 1: ...SMGB0070 rev 1 08 2011 RWM FSN3E Indoor units RAS H V RNME AF Outdoor units RAS HVRN2 Outdoor unit Service Manual YUTAKI S SERIES YUTAKI S SERIES ...

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Page 3: ...eral Information Unit installation Piping work and refrigerant charge Electrical wiring Control system User interface Optional functions Commissioning Electrical checks of the main parts Spare parts Servicing Troubleshooting 1 2 3 4 5 6 7 8 9 10 11 12 ...

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Page 5: ... list 7 2 Unit installation 11 2 1 Outdoor unit installation 12 2 1 1 Initial check 12 2 1 2 Transportation of outdoor unit 13 2 1 3 Center of gravity 14 2 1 4 Factory supplied accessories for RAS 8 10 HRNME AF 15 2 1 5 Installation space 16 2 1 8 Installation place provision 26 2 1 9 Optional parts and installation 29 2 2 Indoor unit installation 48 2 2 1 Selection of the installation location 48...

Page 6: ...ank 73 3 4 1 Hydraulic circuit 73 3 4 2 Pressure drop 74 4 Electrical wiring 75 4 1 Unit electrical wiring and connection 76 4 1 1 General check 76 4 1 2 Electrical connection of outdoor unit 77 4 1 3 Electrical connection of indoor unit 79 4 2 Setting of DIP switches and RSW switches 87 4 2 1 Outdoor unit 87 4 2 2 Indoor unit 90 4 3 Common wiring 97 4 3 1 Electrical wiring between outdoor and ind...

Page 7: ...n 186 6 5 3 Space cooling configuration 188 6 5 4 DHW 190 6 6 Installer access 193 6 6 1 Unit configuration 194 6 6 2 System configuration 196 7 Optional functions 201 7 1 Indoor unit 202 7 1 1 Floor screed drying function circuits 1 2 202 7 1 2 Automatic summer switch off 203 7 1 3 Pump and valve seizure protection 204 7 1 4 DHW anti legionella protection function 204 7 1 5 Tariff input electrica...

Page 8: ...al checks of the main parts 221 9 1 Inverter 222 9 1 1 Specifications of inverter 222 9 1 2 Inverter time chart 224 9 1 3 Protective function 225 9 1 4 Overload control 226 9 2 Thermistor 227 9 3 Electronic expansion valve 230 9 3 1 Electronic expansion valve for the outdoor unit 230 9 3 2 Electronic expansion valve for the indoor unit 231 9 4 High pressure protection device 232 9 5 Noise filter N...

Page 9: ...11 1 3 RAS 4 6 H V RNME AF 276 11 1 4 RAS 8 10 HRNME AF 292 11 2 Indoor unit 308 11 2 1 Removing service cover 308 11 2 2 Replacing electrical components 309 11 2 3 Replacing hydraulic components 314 11 2 4 Replacing refrigerant parts 322 12 Troubleshooting 327 12 1 Troubleshooting procedure 328 12 1 1 Alarm code 328 12 1 2 Troubleshooting by alarm code 331 12 1 3 Troubleshooting in check mode 398...

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Page 11: ...tment friendly units 3 1 2 Applied symbols 4 1 3 Product guide 5 1 3 1 Classification of indoor unit models 5 1 3 2 Classification of outdoor unit models 5 1 3 3 Classification of Domestic Hot Water Tank accessory 6 1 3 4 Product guide indoor unit 6 1 3 5 Product guide outdoor unit 7 1 3 6 Accessory code list 7 1 G ener al in for mation ...

Page 12: ...educing energy expenditure there is a clear trend in the market to use medium and low temperature hea ting systems Technological advances and improvements in insulation in the home enable to use of low temperature water to heat homes This results in more comfort and greater energy efficiency YUTAKI S meets the necessary conditions to provide this type of application fulfilling user s needs The hea...

Page 13: ...following additional combinations Solar combination for DHW YUTAKI S system can be combined with solar panel The solar combination will enable to heat up the DHW by means of the sun The solar combination is designed to transfer the heat from the solar panels sun radiation to the heat exchanger of DHW tank Swimming pool operation For summer sesion period YUTAKI S can be used to heat up the swimming...

Page 14: ...your safety and phy sical wellbeing Not taking these instructions into account could lead to serious very serious or even fatal injuries to you and others in the proximities of the unit In the texts following the danger symbol you can also find information on safe procedures during unit installation C A U TION The text following this symbol contains information and instructions relating directly t...

Page 15: ... outdoor unit models RAS HVRN2 Unit type outdoor unit Position separating hyphen fixed Compressor power HP 2 Heat pump V Single phase unit 1 230V 50Hz Three phase unit 3N 400V 50Hz Inverter system R410A refrigerant Series Made in Japan RAS X H X R N 2 X RAS H V RNME AF Unit type outdoor unit Position separating hyphen fixed Compressor power HP 3 4 5 6 8 10 Heat pump V Single phase unit 1 230V 50Hz...

Page 16: ... Position separating hyphen fixed 2 5 kW Electrical Heater Series E Made in Europe DHWT XXX X H 1 E 1 3 4 Product guide indoor unit RWM FSN3E indoor units 1 3N Unit Code Unit Code RWM 2 0FSN3E 7E474103 RWM 3 0FSN3E 7E474105 RWM 4 0FSN3E 7E474107 RWM 4 0FSN3E 7E474107 RWM 5 0FSN3E 7E474108 RWM 5 0FSN3E 7E474108 RWM 6 0FSN3E 7E474109 RWM 6 0FSN3E 7E474109 RWM 8 0FSN3E 7E474110 RWM 10 0FSN3E 7E474111...

Page 17: ...E300120 RAS 5HVRNME AF 7E300021 RAS 5HRNME AF 7E300121 RAS 6HVRNME AF 7E300022 RAS 6HRNME AF 7E300122 RAS 8HRNME AF 7E317110 RAS 10HRNME AF 7E317111 1 3 6 Accessory code list Room Thermostats Accessory Name Code Figure ATW RTU 01 ON OFF Thermostat Receiver Room Thermostat 7E543000 ATW RTU 02 Intelligent Thermostat Receiver Room Thermostat 7E549900 ATW RTU 03 2nd temperature Thermostat Only Room Th...

Page 18: ...7E549904 CDH2Z1 ATW MVM 01 NEW Mixing valve motor 7E549912 ATW DPK 01 Drain pan kit For RWM 2 0 6 0 FSN3E 7E549902 ATW DPK 02 NEW Drain pan kit For RWM 8 0 10 0 FSN3E 7E549903 ATW AOS 01 Auxilliary output signal box Relay board for additional output signals 7E549910 ATW 2OS 01 Ambient temperature sensor 2nd outdoor temperature sensor 7E549909 ATW WTS 02 Water temperature sensor 2nd temperature con...

Page 19: ... 70544001 DHWT200S 2 5H1E Domestic Hot Water Tank Stainless 200 L 70544100 DHWT300S 2 5H1E Domestic Hot Water Tank Stainless 300 L 70544101 DHWT CP 01 Permanent cathode protection for enamelled tank 200 L 70544900 DHWT CP 03 Permanent cathode protection for enamelled tank 300 L 70544903 DHWT CP 02 Permanent cathode protection for stainless tank 200 L 70544901 DHWT CP 04 Permanent cathode protectio...

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Page 21: ...E AF 13 2 1 5 Installation space 14 2 1 6 Installation place provision 24 2 1 7 Optional parts and installation 27 2 2 Indoor unit installation 46 2 2 1 Selection of the installation location 46 2 2 2 Wall mounting procedure 47 2 2 3 Cover assembly 48 2 2 4 Drain pan assembly 49 2 2 5 Service space 49 2 3 DHWT Domestic Hot Water Tank 50 2 3 1 Name of parts 50 2 3 2 Unit installation 51 2 3 3 Selec...

Page 22: ...e produced when cleaning agent is heated to high temperature by e g being exposed to fire Cleaning liquid shall be collected after cleaning Pay attention not to clamp cables when attaching the service cover to avoid electric shock or fire Check the foundation to be flat leveled and strongly enough Install the unit in a restricted area not accessible by the general public Aluminium fins have very s...

Page 23: ...Over 60º 0 7 to 1 0 m Do not remove the plastic band or the corrugate paper frame Pass the wire ropes through each lifting hole in the wooden base as shown Wire rope Over 60º 0 7 to 1 0 m Do not remove the plastic band or the corrugate paper frame Pass the wire ropes through each lifting hole in the wooden base as shown Wire rope RAS 4 10 H V RNME AF Caution Lift the outdoor unit in its factory pa...

Page 24: ...o not remove any packing materials and hang the unit under packing condition with two ropes as shown below At leat two persons are needed to move the unit RAS 2HVRN2 a 515 mm b 180 mm h 275 mm a b h 1 RAS 3HVRNME AF a 590 mm b 185 mm h 370 mm a b h 1 RAS 4 6 H V RNME AF a 615 mm b 190 mm h 570 mm a b h 1 RAS 8 10 HRNME AF a 690 mm b 200 mm h 620 mm a b h 1 1 Center of gravity ...

Page 25: ...8 10 HRNME AF Make sure that the following accessories are packed with the unit NO TE If any of these accessories are not packed with the unit please contact your dealer Accessory Appearance Quantity Gasket 1 Pipe flange for refrigerant gas piping 1 Ring core 1 Cable tie 1 Compressed sheet 1 ...

Page 26: ... back wall ensure the length marked with be 400 or greater Ensure 250 mm or more of the side space on the pipe cover side Upper Side Blocked Single Installation Multiple Installation Two units or more Pipe Cover Pipe Cover Fifteen mm of space is acceptable for one of the lateral sides Ensure 250 mm or more of the side space on the pipe cover side Allow 250 mm of service space between units Leave o...

Page 27: ...th right and left sides shall be open Pipe Cover Pipe Cover Be sure to use the fan direction guide Leave open both right and left sides Be sure to use the fan direction guide Allow 250 mm of service space between units Serial installation allowed up to two units Leave open both right and left sides The length A is as show in the following table L A 0 L 1 2H 100 or greater 1 2H L H 200 or greater W...

Page 28: ...Cover Pipe Cover Ensure 250 mm or more of the side space on the pipe cover side Ensure 250 mm or more of the side space on the pipe cover side Upper Side Blocked Pipe Cover Pipe Cover Ensure 250 mm or more of the side space on the pipe cover side Ensure 250 mm or more of the side space on the pipe cover side ...

Page 29: ...ater from upper unit falling on the lower unit Ensure 250 mm or more of the side space on the pipe cover side Allow 400 mm of service space above the top board Be sure to use the fan direction guide Allow 250 mm of service 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 drai...

Page 30: ...ft sides Be sure to use the fan direction guide Allow 100 mm of space between units Leave open both right and left sides When subject to direct sunlight on the back wall ensure the length marked with be 500 or greater 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 Dimensions in shows numbers es...

Page 31: ...e between units Both right and left sides shall be open Be sure to use the fan direction guide Leave open both right and left sides Be sure to use the fan direction guide Allow 100 mm of space between units Serial installation allowed up to two units Leave open both right and left sides The length A is as shown in the following table L A 0 L 1 2H 200 1 2H L H 300 When L H use a base for outdoor un...

Page 32: ...ight 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 unit Upper Side Blocked Single Installation Multiple Installation Be sure to use the fan direction guide Close the 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...

Page 33: ...approx 100 mm of space from the side unit Leave open both right and left sides The length A is as shown in the following table L A 0 L 1 2H 200 1 2H L H 300 NO TE When L H use a base for outdoor unit to make L H Close the base not to allow the outlet air bypassed Be sure to use the fan direction guide in order to ensure the length marked with ...

Page 34: ... closed Around sides are open with obstacles above Multiple installation Around sides are open Around sides are open with obstacles above Multi Row Single installation Around sides are open Around sides are open with obstacles above Around sides are closed Around sides are open with obstacles above Multiple installation Around sides are open Around sides are open with obstacles above Multi Row Mul...

Page 35: ...passed Install to avoid the drain water from upper unit falling on the lower unit Be sure to use the fan direction guide Allow 100mm of space between units Serial sideway 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 unit Multiple Installation in Multiple Rows...

Page 36: ...12 Pipe cover Front side mm Anchor bolt M10 Ø12 5 hole 265 100 570 100 265 170 25 25 420 470 Ø16 Hole for anchor bolt M12 2 16x33 Slot Note Space for downward piping Example of fixing outdoor unit by anchor bolts A Cut this portion when this type of anchor bolt is used If not it is difficult to remove the service cover Concrete Anchor bolt Max 21mm After cut A 17 mm RAS 2HVRN2 21 mm RAS 3 10 H V R...

Page 37: ...3 5 Drain hole 4 Ø24 Drain hole Ø26 Drain boss optional part Attaching position Front side Air discharge side 360 165 396 68 127 66 73 Air inlet Drain hole 3 Ø24 Drain hole 2 Ø26 Drain boss attaching position 5 The whole base of the outdoor unit should be installed on a foundation or frame When using vibration proof material it should also be positioned in the same place When installing the outdoo...

Page 38: ...nsure that installation is strong enough against falling Fix the unit with wires field supplied when installing in a location without walls or windbreak and likely exposed to a blast of wind To use a vibration proof mat fix four places to the front and back Installing location where the unit will be exposed to strong wind Follow the instructions below to install on the rooftop or a location withou...

Page 39: ...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 installed together Attaching e...

Page 40: ...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 disch...

Page 41: ...guard 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 CAUTION If the air guide is installed without discharge grille it may cause injury due to rotating fan Two wind...

Page 42: ... 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 43: ...l 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 44: ...g dimension Quantity 1 per unit Air discharge direction Upward downward left right Material Weather proof polypropyle ne 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 example of air flow g...

Page 45: ...tions Model WSP 335A Mounting dimension Air flow Air flow Air flow Air flow Mounting dimension 4xØ7 Quantity 1 per unit Material Galvanized sheet metal baked painting Color Gray 1 0Y8 5 0 5 Weight 5 5 kg Accessories Fixing screw x 4 M5 SUS x 12 Installation manual Installation restriction Guard net Air flow guide or Snow protection hood is not avai lable to install with Wind guard Attaching exampl...

Page 46: ...lle Wind guard Outdoor unit M5 fixing screw x4 Accessories Snow protection hood Air discharge hood No Part name Qty Ø8 Hole for safety wire rope to prevent overturning Fixing screw Accessories 4xØ7 Right side plate 1 Left side plate 1 Front panel 1 Stay 4 Rear suction hood No Part name Qty Hole for safety wire rope to prevent overturning Fixing screw Accessories Ø8 Right side plate 1 Left side pla...

Page 47: ... plate 1 Front panel Upside 1 Front panel Downside 1 Attaching example of snow protection hood Left suction hood Fixing screw Fixing screw Fixing screw Accessories Accessories Accessories Front side Rear side Wire rope Optional For overturning protection Left side Air discharge hood Air discharge grille Outdoor unit Rear suction hood Fixing screw Accessories Fixing screw Accessories ...

Page 48: ... 1 For left side air intake x 1 Unit Fixing screw 4 M5x12 tapping screw 5 M5x14 tapping screw 6 M5x12 tapping screw Unit Fixing screw SUS 6 M5x12 tap ping screw 6 M5x14 12 M5x12 tapping screw 12 M5x14 10 M5x12 tapping screw 10 M5x14 Installation manual Installation restriction Installation with Guard net or Wind guard is not available Installation with Guard net is not available Safety wire rope f...

Page 49: ...ated at 4 positions on the grille Screw tightening torque 2 4 3 1N 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 windbreak covers installation Service space In case of upward air discharge In case of right and left sides air discharge enough space for air discharge...

Page 50: ...xample 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 1N 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 inst...

Page 51: ...plate 1 Front panel 1 Stay 4 Rear suction hood No Part name Qty Accessories Fixing screw Hole for safety wire rope to prevent overturning Right side plate 1 Left side plate 1 Upper front panel Upside 1 Upper front panel Downside 1 Left suction hood No Part name Qty Fixing hole x 2 Fixing screw Accessories Enlarged view of A Fixing hole Right side plate 1 Left side plate 1 Front panel Upside 1 Fron...

Page 52: ...Bonderized steel sheet Iron Stainless NSSC 180 Bonderized steel sheet 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 s...

Page 53: ... 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 example of ...

Page 54: ...harge should be upward 1 Min 200 mm 2 Outdoor unit 3 Air flow guide 4 Passage side 1 2 3 4 Wind guard Specifications Model WSP 335A Quantity 2 per unit 1 1 2 2 3 1 Mounting dimension 2 Air flow Material Galvanized sheet metal baked painting Color Gray 1 0Y8 5 0 5 Weight 5 5 kg Accessories Fixing screw x 4 M5 SUS x 12 Installation manual Installation restriction Guard net Air flow guide or Snow pro...

Page 55: ...ld be placed in the air discharge side 1 Min 200 mm 2 Outdoor unit 3 Wind guard 1 2 3 Snow protection hood Air discharge hood Nº Part name Quantity 1 Right side plate 1 2 Left side plate 1 3 Front panel 1 4 Stay 4 5 Fixing screw Accessories 6 Hole for safety wire rope to prevent overturning 1 2 3 4 5 6 Rear suction hood Nº Part name Quantity 1 Right side plate 1 2 Left side plate 1 3 Upper front p...

Page 56: ...ies A 316 A 1587 250 3 4 1 2 6 230 5 347 330 330 330 235 296 8 5 Ø15 R 7 A Attaching example of snow protection hood 1 2 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...

Page 57: ...on 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 tapping screw 6x M5x14 l 24x M5x14 l tapping...

Page 58: ...o the electrical box Install the indoor units and components as far as possible at least 3 meters from all sources of electromag netic wave radiation Install noise filter when the power supply emits harmful noises To avoid fire or explosion do not install the indoor unit in a flammable environment The air to water heat pump must be installed by a service technician The installation must comply wit...

Page 59: ...ately 60 kg RWM 2 0 6 0 FSN3E and 85 kg RWM 8 0 10 0 FSN3E Step Fix the indoor unit at the bottom side using appropriate plugs and screws To do so the unit is equipped with two holes at the bottom outer edges of the back plate frame there are two additional holes on the upper outer edges of the back plate frame for in which the Wall Support cannot be installed RWM 2 0 6 0 FSN3E 486 wall fixing hol...

Page 60: ...es over the Back Plate Hooks x2 locations with the help of the external marks indicated by Step When the Right side is centred repeat the operation on the Left side Put the Left side Cover Holes into the Back Plate frame Hooks x2 locations with the help of the external marks indicated by Step Once the 4 hooks are placed into their corresponding cover hooks lower the cover to the end of the hooks S...

Page 61: ...ctions included with the accessory Make sure to avoid dew outside the drain pan when installing it on the pipes and maintain level in order to pre vent drain pan overflow 2 2 5 Service space Install the indoor unit with sufficient clearance around it to provide good conditions for electrical cables Water and refrigerant piping connections installation and maintenance Minimum recommended space Note...

Page 62: ... 1 External covering 1 Top cover 1 Thermal insulation 1 Control panel 1 Electrical Heater 1 Heating coil 1 Sensor probe 1 DHWT sensor DHWT 200 300 E 2 5H1E 10 11 Ref Qty Name 1 Inspection aperture 1 HSW storage tank 1 External covering 1 Top cover 1 Thermal insulation 1 Control panel 1 Electrical Heater 1 Heating coil 1 Sensor probe 1 Cathodic protection anode 1 DHWT sensor ...

Page 63: ...where there is a high level of oil mist salty air or sulphurous atmosphere When installing some device next to DHWT keep clearance between DHWT and any other obstacle of more than 500 mm C aution Insufficient ventilation can cause oxygen deficiency Working with no sufficient ventilation in an enclosed space should cause can produce toxic gas especially when cleaning agent is heated to high tempera...

Page 64: ......

Page 65: ...ipe work 36 3 1 2 Suspension of refrigerant and water pipes 36 3 1 3 Pipe work and connection 37 3 2 Water pipe work and connection 47 3 2 1 General notes 47 3 2 2 Water piping connection 48 3 2 3 Draining pipe work 49 3 2 4 Circuit water filling in 49 3 2 5 Water flow adjustment 49 3 3 Pressure charts 51 3 4 DHWT Domestic Hot Water Tank 53 3 4 1 Hydraulic circuit 53 3 4 2 Pressure drop 54 ...

Page 66: ...installation is not completed until next day or over a longer period of time braze off the ends of the piping and char ge with oxygen free nitrogen through a Schrader valve type access fitting to prevent moisture and particle contamination Do not use insulation material that contains NH3 as it can damage copper pipe material and become a source of future leakage Completely insulate both refrigeran...

Page 67: ...tdoor unit Piping connection 1 The pipes can be connected from any of the following four directions front rear bottom or right side when facing the outdoor unit RAS 2HVRN2 No Description 1 Rear side piping 2 Pipe cover 3 Stop valve 4 Connecting piping 5 Liquid 6 Gas A Direction to remove pipe cover RAS 3 10 H V RNME AF No Part 1 Rear side piping cover 2 Rear side piping work Knock out hole 3 Right...

Page 68: ...t ting along the guideline at the rear of the cover or punching it with a driver Remove the burr with a cutter A B C D NOTE Hold the cover with a hand at the same time while removing the screws as the cover may fall down For the front and side piping No Part 1 Front piping hole 2 Side piping hole 1 2 To use racking or conduit tubes check the size and remove the stiped parts following the slit NOTE...

Page 69: ...e field supplied piping is connected with stop valves directly it is recommended to use a tube bender 4 Check that the stop valves are closed completely 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 Torq...

Page 70: ... torque Nm Valve type Model A B C D Liquid valve 2 6HP 7 9 34 42 34 42 14 18 Gas valve 2 6HP 9 11 34 42 68 82 14 18 Liquid valve 8HP 7 9 37 40 16 10 12HP 7 9 37 60 16 Gas valve 8 12HP 9 11 49 53 75 9 8 Outdoor unit stop valve No Part 1 Stop valve 2 Flare nut A Do not apply two spanners at this position If applied leakage will occur CAUTION At the test run fully open the spindle If not fully opened...

Page 71: ...ge refrigerant by opening the gauge manifold valve Charge the required refrigerant within the difference range of 0 5 kg by operating the system in cooling Fully open the liquid line stop valve after completing refrigerant charge Continue cooling operation for more than 10 minutes to circulate the refrigerant See the example below No Description 1 Gas line 2 Thermal insulation 3 Cover the flare nu...

Page 72: ...M 5 0FSN3E Ø 15 88 5 8 Ø 9 53 3 8 RAS 6H V RNME AF Ø 15 88 5 8 Ø 9 53 3 8 RWM 6 0FSN3E Ø 15 88 5 8 Ø 9 53 3 8 RAS 8HRNME AF Ø 25 4 1 Ø 9 53 3 8 RWM 8 0FSN3E Ø 25 4 1 Ø 9 53 3 8 RAS 10HRNME AF Ø 25 4 1 Ø 12 7 1 2 RWM 10 0FSN3E Ø 25 4 1 Ø 12 7 1 2 N O TE 1 2HP system only RAS 2HVRN2 RWM 2 0FSN3E If using different piping size for outdoor unit and indoor unit a pipe adapter will be required Ø12 7 Ø15...

Page 73: ... degree counterclockwise 3 The outer diameter section of the drain boss is 32 mm 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 may not be sufficient to collect drain water If collecting a big amount of drain water should be necessary provide a drain pan bigger than the unit base supplied one and instal...

Page 74: ...ipes indicating its circuit connection RWM 2 0 6 0 FSN3E RWM 8 0 10 0 FSN3E Refrigerant liquid piping Refrigerant gas piping Refrigerant liquid piping Refrigerant gas piping Water inlet outlet pipe Water in Water out Refrigerant liquid piping Refrigerant gas piping Refrigerant liquid piping Refrigerant gas piping Water inlet outlet pipe Water in Water out Refrigerant Pipe Connections The indoor un...

Page 75: ...ss 1 4 6 35 0 80 3 8 9 53 0 80 1 2 12 7 0 80 5 8 15 88 1 00 Dimensions of the flare nut Units mm inch Nominal diameter External diameter B 1 4 6 35 17 3 8 9 53 22 1 2 12 7 26 5 8 15 88 29 Flare nuts tightening torque Always use two wrenches or fix spanners when tightening the Flare Nuts on the refrigerent pipes If any failure occurs during this process the result could be pipe damage or refrigeran...

Page 76: ...ure should be maintained within 0 03 to 0 05 MPa If excessively high pressure is applied to a pipe it will cause an explosion Copper pipe size Ød1 Gap a Ø6 35 0 08 Ø6 5 0 1 0 33 6 0 08 0 0 07 Ø9 53 0 08 Ø9 7 0 1 0 35 8 0 08 0 0 09 Ø12 7 0 08 Ø12 9 0 1 0 38 8 0 08 0 0 19 Ø15 88 0 09 Ø16 1 0 1 0 41 8 0 09 0 0 13 Ø19 05 0 09 Ø19 3 0 1 0 44 10 0 09 0 0 16 Ø22 22 0 09 Ø22 42 0 1 0 39 10 0 09 0 0 11 Ø25...

Page 77: ...location is not the highest of the water installation air might be trapped inside the water pipes which could cause system malfunction In that case additional air purgers are provided field supplied to ensure no air enters the water circuit It is advisable to insulate the water pipes joints and connection in order to avoid heat loss When the unit is stopped during shutdown periods and the ambient ...

Page 78: ...st bellow the valves G 1 1 4 connection Refer to the figure bellow detailing the location of the Water Pipes location dimensions and Connection sizes N ote There is a label behind the pipes indicating its circuit connection RWM 2 0 6 0 FSN3E RWM 8 0 10 0 FSN3E Water inlet Water outlet Refrigerant gas pipe Refrigerant liquid pipe Water inlet Water outlet Refrigerant gas pipe Refrigerant liquid pipe...

Page 79: ...ater into drin king water supply net The Check Valve should be field supplied Charge the water circuit until reaching a water pressure of 1 7 2 0 bar 1 8 bar recommended Fill in the circuit with water from the drinking water supply net The heating installation water must comply with EN di rective 98 83 EC Non sanitary controlled water is not recommended for example water from wells rivers lakes et...

Page 80: ...der to avoid reading mistakes from different devices because of different tolerances or adjustment Check the Pump Performance Curves Refer to the Pump Performance Curves to calculate the circuit s Water Flow depending on the actual Pressure Drop and the Heating Circuit type Heating Floor Radiators Fan Coils Selection of the Pump Speed The indoor unit pump should be adjusted according to Pressure L...

Page 81: ...ssure charts RWM 2 0 10 0 FSN3E RWM 2 0FSN3E RWM 3 0FSN3E Static pressure V3 V2 V1 Static pressure V3 V2 Water flow Water flow RWM 4 0FSN3E RWM 5 0FSN3E Static pressure V3 V2 V1 Static pressure V3 V2 V1 Water flow Water flow Note V Pump motor speed V1 Low V2 Medium V3 High ...

Page 82: ... charge SMGB0070 rev 1 08 2011 72 RWM 6 0FSN3E RWM 8 0FSN3E Static pressure V3 V2 V1 Static pressure V3 V2 V1 Water flow Water flow RWM 10 0FSN3E Static pressure V3 V2 V1 Water flow N ote V Pump motor speed V1 Low V2 Medium V3 High ...

Page 83: ...g the hot water inlet and outlet valves to the water condenser 6 This DHWT must be fully air purged to avoid heating elements radiating the tank case without water 7 Apply thermal insulation on the hydraulic system pipes in order to avoid accidental injure due to excessive heat on piping surfaces and also to avoid heat losses 8 When the unit is stopped during shutdown periods and the ambient tempe...

Page 84: ...ting expansion is normal The volume of this discharge can be up to 3 of the storage tank s capacity The pressure regulator device must be working regularly depending on the quality of water in order to remove the lime s deposits and verify that it is not blockade A water leakage in the pressure protection device can exist The discharge pipe should be always open to the at mosphere free of frost an...

Page 85: ...Electrical connection of indoor unit 51 4 2 Setting of DIP switches and RSW switches 59 4 2 1 Outdoor unit 59 4 2 2 Indoor unit 62 4 3 Common wiring 69 4 3 1 Electrical wiring between outdoor and indoor unit 69 4 3 2 Wire sizes 70 4 4 DHWT Domestic Hot Water Tank 71 4 5 Electrical Wiring Diagrams 78 4 5 1 Electrical wiring diagram for indoor unit 78 4 5 2 Electrical wiring diagram for outdoor unit...

Page 86: ...of indoor unit three phases connection Zmax is not considered 3 Harmonics situation of each model regarding IEC 61000 3 2 and IEC 61000 3 12 is as follows Models situation regarding IEC 61000 3 2 and IEC 61000 3 12 Ssc xx Models Ssc xx KVA Equipment complying with IEC 61000 3 2 professional use RAS 2HVRN2 RAS 3HVRNME AF RAS 4HRNME AF RAS 5HRNME AF RAS 6HRNME AF RAS 8HRNME AF Equipment complying wi...

Page 87: ...Check and test to ensure that if there is more than one source of power supply that all are turned OFF Be sure to use a dedicated power supply Never use a power supply shared by another appliance 4 1 2 Electrical connection of outdoor unit The correct electrical wiring connection for the outdoor unit is shown below 1 Using the appropriate cable connect the power circuit to the appropiate terminals...

Page 88: ...o ensure strain relief 5 When routing out cable make sure that it does not obstruct mounting of the 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 the...

Page 89: ...ectrical box base plate 3 Connect the transmission wires between the outdoor unit and the indoor unit to the terminals 1 and 2 on the terminal board 2 TB2 4 Fix the cable with the clamp supplied in the Electrical Box to ensure strain relief 5 When routing out cable make sure that it does not obstruct mounting of the outdoor service cover Wiring method Keep a distance between each wiring terminal a...

Page 90: ...tivated 12 N common Neutral terminal common for accessory devices 13 Swimming pool valve The air to water heat pump can be use to heat Swimming pool This output will be on when Swimming pool is activated 14 Earth Connection Terminal earth connection for accessories 15 Mixing valve close When a mixing system is required for a second temperature con trol these two outputs are necessary to control de...

Page 91: ...y The receiver is connected to the polarity free terminals 3 4 The Room Unit and RF Receiver are already configured to communicate with each other If the Room Unit or RF Recei ver is replaced or added additional second temperature circuit thermostat it is necessary to use the RF binding procedu re See binding procedure chapter 3 4 RF Receiver Optional ON OFF room thermostat TB2 ATW RTU 01 The heat...

Page 92: ...TB2 It is necessary to connect an external input to the Heat pump to provide a signal with Swimming pool s Water pump is ON 7 8 Water Pump swimming pool Swimming pool station L Tariff switch input TB2 If a tariff switching device load shedding management is provided by the electricity utility it can be used to prevent the heat pump switching ON 7 9 Tariff device Tariff switching device L Solar inp...

Page 93: ...en normally working not power into the valve If using SPST 3 wire valve HITACHI is not responsible for its operation Swimming pool valve TB2 The unit can be used to heat Swimming pool The signal is used for the 3 way motorized diverting valve and to provide posi tion control of supply water flow flow for space heating when no signal and flow for swimming pool when signal is ON 12 13 N L L N SWP 3W...

Page 94: ...e circulating pump for the se cond heating circuit 17 WP2 18 L N Secondary water pump Using the appropriate cable connect pump cable as shown in previous diagram Pump requirements Power supply 230V AC 50Hz Maximum running current 500mA In case of high water pump consumption install an auxiliary relay Water pump 3 for hydraulic separator system TB2 When the boiler is configured with the heat pump o...

Page 95: ...o water heat pump can enable it if the heat pump cannot achie ve the required DHW temperature itself 23 EH DHWT 24 Electrical heater input Note For the HITACHI Domestic Hot Water Tank DHW200 300 E S 2 5H1E the Terminal connections will be terminals 3 and 4 Solar output tb2 When solar mode is enabled by the heat pump and the temperature in the solar panel rises above the water temperature in the do...

Page 96: ...ve and the circulation pump on the second circuit 2nd ambient sensor THMAMB2 is used when the heatpump is located in a position not suitable for this measura ment Swimming pool sensor THMSWP is used for the swimming pool temperature control and should be positioned inside plate HEX of swimming pool 31 29 30 27 28 THMwo2 THMwo3 THMDHWT THMamb2 THMswp 34 32 33 35 N ote 2nd Ambient sensor and swimmin...

Page 97: ...ting dips switches first turn the power source off and then set the position of the dips switches In case of setting the switches without turning the power source off the contents of the setting are invalid Function of the of DIP switches and RSW switches DSW1 Test Run Function Setting position Setting before shipment 1 2 3 4 Test run for cooling 1 2 3 4 Test run for heating 1 2 3 4 Forced stop of...

Page 98: ...External input output selection signals set by PSW 1 2 3 4 5 6 caution The cancellation of the outdoor hot start control configuration could damage the compressor if it is usually used In that case the unit warranty will be void N ote Only for RAS 2HVRN2 units In case of using DHWT and Heat in summer operation DSW2 pin 4 needs to be on DSW3 Capacity setting Unit Setting position Unit Setting posit...

Page 99: ...Setting position 2HP 3HP 4 5 6 HP 8 10 HP 230V setting before shipment 1 2 1 2 1 2 400V setting before shipment 1 2 1 2 Jumpers Jumper lead setting JP1 6 Setting before shipment JP1 JP2 JP3 JP4 JP5 JP6 1 0 0 1 1 1 0 Open 1 Short circuit The function selection using the jumper lead setting is shown in the table below Setting Function Details JP1 Not used JP2 Not used JP3 Not used JP4 Not used JP5 N...

Page 100: ...display mode N ote The mark indicates the dip switches positions No mark indicates pin position is not affected The figures show the settings before shipment or after selection Not used means that the pin must not be changed A malfunction might occur if changed caution Before setting dip switches first turn the power supply OFF and then set the position of dip switches If the switches are set with...

Page 101: ...s and rotary switches DSW1 Not used DSW2 Unit capacity setting RWM 2 0FSN3E RWM 3 0FSN3E RWM 4 0FSN3E RWM 5 0FSN3E RWM 6 0FSN3E RWM 8 0FSN3E RWM 10 0FSN3E DSW3 Additional settings Setting before shipment N A not used N A not used 1 step heater for 3 phase unit N A Not used ...

Page 102: ...oling operation 8 7 Outdoor sensor accessory 8 7 N A not used 8 7 N ote Never activate Heater Forced OFF and Emergency operation heater at the same time caution Never turn all DSW4 dip switch pins ON If this happens the software of the unit will be removed DSW5 Internal configuration Not used DSW6 Internal configuration Not used DSW7 Internal configuration Not used DSW8 Internal configuration Not ...

Page 103: ...g RSW3 Ten digits RSW4 Unit digits Led indications LED1 Pump operation Status LED1 Pump operation ON ON Power supply OFF OFF LED2 System heater operation Status LED2 System Heater or Boiler operation ON System Heater or Boiler operation OFF LED3 HSW Heater operation Status LED3 HSW Heater operation ON ON HSW Heater operation OFF OFF LED4 Operation status indication Status LED4 Thermo OFF OFF Therm...

Page 104: ...ration display at normal operation Segment display Segment Display Upper 2 char Lower 3 char Unit OFF oF Cooling Demand OFF Co 5t Cooling Thermo OFF of Cooling Thermo ON on Heating Demand OFF hE 5t Heating Thermo OFF of Heating Thermo ON on Heating Boiler ON bo Hot Sanitary Water Thermo OFF hS oF Hot Sanitary Water Thermo ON on Swimming Pool Thermo OFF sP oF Swimming Pool Thermo ON on Alarm AL Ala...

Page 105: ...entry for 1 hour Check indicator Check indicator mode Switches to this mode to display the temperature that the microcomputer detects etc when PSW2 is pressed more than three seconds Operation and display Details Check indication PSW1 PSW2 PSW1 PSW2 Co In 12 0t 35 This section shows an example of check indication Temperature is displayed with the number rounded up to the nearest whole number Fix t...

Page 106: ... Temperature THM7 ºC tA BBB Second ambient Temperature THMAMB2 ºC tI BBB Outdoor Unit Average Ambient Temperature ºC tG BBB Gas Temperature THMG ºC tL BBB Liquid Temperature THML ºC td BBB Compressor top Temperature THM9 ºC ts BBB Evaporation gas Temperature THM8 ºC df 888 Defrosting d1 888 Cause of stoppage h1 BBB Inverter Operation frequency Hz ei BBB Indoor Expansion valve opening Eo BBB Outdoo...

Page 107: ...e for field wiring is not used fix rubber bushes to the panel with adhesive All the field wiring and equipment must comply with local and international codes C aution Pay attention to the connection of the operating line Incorrect connection may cause PCB failure RAS 3 6HVRNME AF RAS 4 6HVRNME AF Indoor Unit RWM 4 6FSN3E Indoor Unit RWM 3 6FSN3E Outdoor unit RAS 4 10 HRNME AF Outdoor unit RAS 2HVR...

Page 108: ...AF 18 4 0 mm RAS 5HVRNME AF 26 6 0 mm RAS 6HVRNME AF 26 6 0 mm RAS 4HRNME AF 3N 400V 50 Hz 7 2 5 mm 4 GND RAS 5HRNME AF 11 4 0 mm RAS 6HRNME AF 13 4 0 mm RAS 8HRNME AF 13 4 0 mm RAS 10HRNME AF 17 4 0 mm N ote GND Ground wire Types of switches Select the main switches in accordance with the following table Model Power supply Max Current A CB A ELB no of poles A mA RWM 2 0FSN3E 1 230V 50Hz 16 20 2 4...

Page 109: ...any wiring or connections unless the main power switch is OFF Make sure that all the power sources are switched OFF Check that the earth wire is securely connected tagged and locked in accordance with national and local codes Check and test to ensure that if there is more than one source of power supply that all are turned OFF Check to ensure that the screws of the terminal block are tightly tight...

Page 110: ...ble size Sensor cable size EN60335 1 EN60335 1 EN60335 1 DHWT 1 230V 50Hz 15 2 5 mm 1 0 mm2 0 75 mm2 Type of switches Select the main switches in accordance with the following table Model Power supply Maximum current A CB A ELB nº of poles A mA DHWT 1 230V 50Hz 15 20 2 40 30 Note CB Circuit Breaker ELB Earth Leakage Breaker Follow local codes and regulations when selecting field wires Circuit Brea...

Page 111: ... system control unit Main switch Ref Name WT Regulating and Safety thermostat Re Auxiliary Relay SW1 Operating Mode switch R 123 Electrical Heater LD1 LED1 POWER ON LD2 LED2 AUTO MODE ON LD3 LED3 Electrical Heater Manual TB Terminal Board L N T Power supply 3 4 Control Heater Input 5 6 Electrical Heater Connection ...

Page 112: ...er to protect the inside of the vessel from corrosion all the enamelled DHWT can be equipped whit a cathodic pro tection unit comprising magnesium sacrifice anodes charge gauges and wiring of connection It basically comprises a magnesium anode 1 mounted on the storage tank s connection plate 2 connected to the ex ternal anode load measured 3 which allow to know the anode consumption rate without h...

Page 113: ... following way To the anode connection 5 female Faston terminal To earth connection 6 U shaped terminal To the potentiostat connections at 9 and 10 pins 7 and 8 respectively Note Use original wires only To avoid any risk of corrosion due to reverse polarity do not lengthen nor shorten the wires Use a socket base near to the storage heater for this purpose The protective anode starts comes into ope...

Page 114: ...s must be carried out by an authorised electrical fitter All standards and regulations must be observed The user is responsible of ensuring that the essential requirements of the European Low Voltage Directive are respected Electric heating elements generates high temperatures Precautions should be taken to protect goods and persons from accidental burns during the operation and after the equipmen...

Page 115: ...Heater Seal Washers Screws Studs Nuts Metal protective casing Screws M6 Panel Screws M4 Wires Earth Wire DHWT 200 300 E 2 5H1E Ref Name Heater connection To terminal 5 and 6 of the control panel To the top flange To earth terminal of the control panel Flange Heater Seal Nuts Nylon bushing Nylon washers Metalic washers Metal protective casing Screws M6 Panel Screws M4 Wires Earth Wire ...

Page 116: ...4 Electrical wiring SMGB0070 rev 1 08 2011 106 4 5 Electrical Wiring Diagrams 4 5 1 Electrical wiring diagram for indoor unit RWM 2 0 6 0 FSN3E ...

Page 117: ...4 Electrical wiring SMGB0070 rev 1 08 2011 107 4 RWM 8 0 10 FSN3E ...

Page 118: ...4 Electrical wiring SMGB0070 rev 1 08 2011 108 4 5 2 Electrical wiring diagram for outdoor unit RAS 2HVRN2 ...

Page 119: ...9 QN2 R89 R112 R96 R3 R2 R67 R66 CP21 Q203 D15 J1 R65 Z1 C108 RY2 RY1 JP11 JP12 R116 R115 C112 JP6 JP4 JP5 R117 R118 C110 CB3 CB2 CB1 U V W PCN401 DCL2 DCL1 DM3 DM2 DM1 T S R CN1 CN4 CN207 CN206 CN204 CN203 CN202 RD CN201 WH PCN202 RD WH PCN201 ê ê 1 1 1 1 1 1 1 1 1 1 D5 R35 C17 D10 D9 2 NF CN2 Surface Surface W 0V 220V 240V CN6 CN2 THM7 THM9 THM8 EFS1 EFR1 PCN2 PCN5 PCN6 DANGER HI G H VOLTAGE W V...

Page 120: ...4 Electrical wiring SMGB0070 rev 1 08 2011 110 RAS 4 6 HVRNME AF ...

Page 121: ...4 Electrical wiring SMGB0070 rev 1 08 2011 111 4 RAS 4 6 HRNME AF ...

Page 122: ...r CA CS1 2 SVA1 A2 SVF TB1 2 TF1 Solenoid valve for hot gas bypass Terminal board Transformer Thermistor for fin temperature Thermistor Surge absorber THM 7 9 ZNR THM RVR Contactor for compressor motor Reactor I F Connector Diode module Dip switch on PCB1 Fuse Inverter system power module Motor for compressor Motor for outdoor fan Micro computer control expansion valve Noise filter Printed circuit...

Page 123: ...evice control system 86 5 2 Printed circuit board 87 5 2 1 Indoor unit 87 5 2 2 Outdoor unit 88 5 3 Safety protection and control device 90 5 3 1 Indoor unit 90 5 3 2 Outdoor unit 90 5 4 Standard control functions 91 5 4 1 Indoor Unit 91 5 Cont rol s y s tem ...

Page 124: ...et Thermistor for water outlet Thermistor for water outlet 2 Electrical control expansion valve drive circuit Relay drive circuit Inputs drive circuit MV1 MV2 AR1 AR2 3WV DHW 3WV SWP MIX VALV WP1 WP2 WP3 Solar EH DHW BC SOLin SWPin TARIFF in 52P THe LWPSS WFS ON OFF THERM Option signals Protections Wireless transmission circuit Wireless remote control switch Indoor unit Symbol Name AR1 2 Heater st...

Page 125: ...condary pump output WP2 PCN9 Secondary pump output WP3 PCN9 PCB2 Actuator Pump Actuator PCN1 Boiler signal PCN2 Electrical heater DHW signal PCN3 Solar signal PCN4 A D Input Gas Thermistor THMg CN12 Liquid Thermistor THMl CN11 Water outlet Thermistor THMwo CN13 Water inlet Thermistor THMwi CN9 Water sanitary tank thermistor THMDHW CN10 Water Boiler control thermistor THMwo3 CN15 Water 2nd temperat...

Page 126: ...or THM8 PIPE Pipe temperature thermistor THM9 COMP Compressor temperature thermistor THM10 CN1 Input function CN2 Demand input CN5A MV Micro electronic expansion valve CN7 Output function CN8 H LINK Transmission from outdoor unit to indoor unit CN17 Transmission to PCB2 CN21 Transmission to PCB1 CN22 Transmission to IPM CN24 MOF Motor for outdoor fan CN25 For inspection CN26 For inspection CN27 Fo...

Page 127: ...er protection Switch indication DSW1 PCB1 Test run DSW2 Piping length and selection function DSW3 Capacity code DSW4 RSW1 Refrigerant cycle number DSW5 End terminal resistor DSW6 Power source setting LED indication LED1 Red This LED indicates the transmission status bet ween the indoor unit and the RCS LED2 Yellow This LED indicates the transmission status bet ween the indoor unit and the outdoor ...

Page 128: ...ion 5ºC of Maximum water temperature Heating mode Freeze temperature protection 3ºC of minimum water temperature Cooling mode For refrigerant temperature Freeze temperature protection Tl 20ºC for 30 seconds For the control circuit Fuse capacity 5A Inside PCB For the water pump Fuse capacity 3 15A 5 3 2 Outdoor unit MODEL RAS 2HVRN2 RAS 3HVRNME AF RAS 4H V RNME AF RAS 5 6 H V RNME AF RAS 8 10 RNME ...

Page 129: ...ure 30 35 ºC Aux Heater Plate HEX Exp vessel The unit is connectable to only one circuit demand either high temperature i e radiator or fan coils or low temperature radiant floor In addition the unit can be combined with Sanitary tank with solar kit extension and with swimming pool NO TE For more information refer to respective chapters Water temperature target depends on actual water outlet tempe...

Page 130: ...g valve and additional water sensor The unit can always be combined with Sanitary tank with solar kit extension and with swimming pool Water temperature target depends on the maximum heating supply set points Target area 1 target area 2 Selecting space heating configuration Available system configuration will be set using water type for space heating operation CODE REF Description Default Value CI...

Page 131: ...s selected by an Outside Temperature Compensated OTC control that is defined by 4 different points Minimum and maximum water outlet temperatures vs Minimum and maximum outdoor ambient temperatures OTC Gradient Water target is selected by an Outside Temperature compensated OTC control that is defined by a different gra dient of the curve The initial point of the curve is always 20ºC 20ºC Water outl...

Page 132: ...Tº C1 44 3 012 3 011 1 ºC 3 008 Tsh1 h Set point at high ambient Tº C1 20 3 012 3 011 1 ºC CIRCUIT 2 Mixed circuit 3 105 Tah2 l Low ambient Tº C2 20 20 6 1 ºC 3 106 Tah2 h High ambient Tº C2 20 7 25 1 ºC 3 107 Tsh2 l Set point at low ambient Tº C2 44 3 112 3 111 1 ºC 3 108 Tsh2 h Set point at high ambient Tº C2 20 3 112 3 111 1 ºC NoteS Default values are the same for both circuits in order to pre...

Page 133: ...ext 46 1 4 1 4 x Text 48 1 5 1 5 x Text 50 1 6 1 6 x Text 52 1 7 1 7 x Text 54 1 8 1 8 x Text 56 1 9 1 9 x Text 58 2 0 2 0 x Text 60 2 1 2 1x Text 62 2 2 2 2x Text 64 CODE REF Description Default Value Range Steps Units CIRCUIT 1 Direct circuit 3 009 OTCh1 Gradient C1 0 6 0 2 2 2 0 1 CIRCUIT 2 Mixed circuit 3 109 OTCh2 Gradient C2 0 6 0 2 2 2 0 1 N otes Default values are the same for both circuit...

Page 134: ...xed Tº C2 40 3 112 3 111 1 ºC Notes Default values are same for both circuits in order to prevent high temperature in the Heating floor circuit Parameters 3 0 1 12 3 0 1 11 are defined by Maximum and Minimum water outlet temperatures selected by installer Water outlet temperature will depend on unit s operational range CAUTION It is the installer s responsibility to make sure no unwanted situation...

Page 135: ...e Zone 2 Low temperature 30 35 ºC Zone 1 system Hydraulic Separator Second temperature control Secondary water pump Motorized 3way valve To YUTAKI S system To YUTAKI S system control The system control then decides how much to open or close the mixing valve to achieve the desired position for the valve CODE REF Description Default Value Range Steps Units 3 133 PB Proportional band of mixing valve ...

Page 136: ...3 011 Tmaxh1 Maximum supply Tº 60 35 60 1 ºC 3 012 Tminh1 Minimum supply Tº 20 20 34 1 ºC CIRCUIT 2 Mixed circuit 3 111 Tmaxh2 Maximum supply Tº 60 35 60 1 ºC 3 112 Tminh2 Minimum supply Tº 20 20 34 1 ºC Note 55ºC for RWM 2 0FNS3E 80ºC when boiler combination CA UTION Temperature limits have priority over all other temperature set point modifications Room Thermos tat User Selection etc and maximum...

Page 137: ...correct system functioning will be of the installer The configuration examples given below are only for illustration purposes Main cooling configuration Configuration 1 Direct Circuit Low temperature 5 12 ºC Medium tempera ture 16 21 ºC Aux Heater Plate HEX Exp vessel The unit is connectable to only one circuit demand either low temperature i e fan coils or medium temperature refres hing floor In ...

Page 138: ...when not in use see Optional functions chapter The unit can always be combined with Sanitary tank with solar kit extension and with swimming pool Water temperature target depends on the maximum cooling supply set points Target area 1 target area 2 Note In case of Radiator and Refreshing floor installation Radiators valve will be closed and disabled by user and the system only works for refreshing ...

Page 139: ...ition No load condition is active all of the activation events are inactive Water temperature set point Each of the 2 water circuits will have an independent water set point Water circuit set point configuration can be set as follows CODE REF Description Default Value CIRCUIT 1 Direct circuit 3 004 WTc1 Water Calculation Cooling C1 Note OTCpoints Fix Fix CIRCUIT 2 Mixed circuit 3 104 WTh2 Water Ca...

Page 140: ...ater circuit number n 1 or 2 CODE REF Description Default Value Range Steps Units CIRCUIT 1 Direct circuit 3 014 Ta1lc Low ambient Tº C1 23 17 30 1 ºC 3 015 Ta1hc High ambient Tº C1 32 31 45 1 ºC 3 016 Ts1lc Set point at low ambient Tº C1 22 3 020 3019 1 ºC 3 017 Ts1hc Set point at high ambient Tº C1 16 3 020 3019 1 ºC CIRCUIT 2 Mixed circuit 3 114 Ta2lc Low ambient Tº C2 23 17 30 1 ºC 3 115 Ta2hc...

Page 141: ...CUIT 1 Direct circuit 3 018 TF1 Fixed Tº C1 19 3 020 3019 1 ºC CIRCUIT 2 Mixed circuit 3 118 TF2 Fixed Tº C2 19 3 120 3119 1 ºC N oteS Default values are same for both circuits in order to prevent low temperature in the Refreshing floor circuit Parameters 3 0 1 20 30 1 19 are defined by Maximum and minimum water outlet temperature selected by installer See bellow caution It is the installer s resp...

Page 142: ...he cooling supply set point and the cooling supply temperature Zone 2 High temperature 16 21 ºC Zone 1 system Hydraulic Separator Second temperature control Secondary water pump M o t o r i z e d 3way valve To YUTAKI S system To YUTAKI S system control CODE REF Description Default Value Range Steps Units 3 133 PB Proportional band of mixing valve 6 0K 0 2 20 0 2 ºC 3 134 IRF Integral reset factor ...

Page 143: ...efault Value Range Steps Units CIRCUIT 1 Direct circuit 3 019 Tmaxc1 Maximum supply Tº C1 22 19 22 1 ºC 3 020 Tminc1 Minimum supply Tº C1 16 5 18 1 ºC CIRCUIT 2 Mixed circuit 3 119 Tmaxc2 Maximum supply Tº C2 22 19 22 1 ºC 3 120 Tminc2 Minimum supply Tº C2 16 5 18 1 ºC caution Temperature limits have priority over all other temperature set point modifications Room Thermostat User Se lection etc an...

Page 144: ... 002 RTT RTT ON OFF Intelligent ON OFF ON OFF Thermostat accessory ATW RTU 01 When the ON OFF Room Thermostat temperature setting is higher than room ambient temperature Room Thermostat communicates with RF Receiver in order to close relay signal and Thermo ON Condition must be applied Unit ON OFF Thermostat Receiver Wireless Thermostat Thermostat Receiver Unit status Pump status ECO Demand Closed...

Page 145: ...e When Thermostat is demanded a minimum ON time will be applied including when demand is OFF b Minimum OFF Time When Thermostat is demanded a minimum OFF time will be applied CODE REF Description Default Value Range Steps Units 3 030 Ron Minimum ON Time 6 0 15 1 min 3 031 Roff Minimum OFF Time 6 0 15 1 min Request Thermostat demand by ON OFF Thermostat Unit Thermo ON OFF 1 0 1 0 3 030 3 031 No req...

Page 146: ...e programme in the Room Unit the room temperature set point will cause a shift of the heating curve down to reflect the change in desired room temperature The change in supply set point due to the room set point is dependent on the value of the outside temperature and the selected heating calculation Resulting Water Temperature Set Point will be Ttwo Ttwo OTC 2 x DTroom Where Ttwo Resulting Water ...

Page 147: ... set point in order to reduce room error The amount of room effect can be adjusted using the room temperature compensation factor setting To increase or decrease the amount of room compensation adjust the room compensation factor A higher value will give more priority to the room temperature error and a lower value will mean the controller follows the selected heating curve more closely If a Room ...

Page 148: ...2 RS Room set point RT Room temperature Example Ttwo OTC 1 3 x Ta 43 2 Text outside temperature 0ºC Ttwo OTC 1 3x 0 43 2 43 2ºC RS 20ºC RT 23ºC RFactn 2 Default value Ttwo function OTC RFactn x Room set point Room temperature Ttwo function OTC 2x 20 23 Ttwo 43 2 6ºC à Ttwo 37 2ºC 06 23ºC RT 20ºC RS Outlet temperature set point ºC OTC offset x2 Outdoor ambient temperature ºC Note Room set point fac...

Page 149: ...mo OFF occurs when all Thermostats are fulfilled Cooling application If Room Temperature Room Set point temperature Roff à Thermo OFF by Indoor temperature If Room Temperature Room Set point temperature à Thermo ON by Indoor temperature N ote In case of multiple Room Thermostats Thermo OFF occurs when all Thermostats are fulfilled CODE REF Description Default Value Range Steps Units 3 032 Roff Roo...

Page 150: ...when space heating or cooling is disabled using the LCD user interface or Thermostat OFF intelligent ther mostat only pump must be switched OFF and only switched ON by Domestic Hot water request 1 0 1 0 0 1 Space Heating Cooling status Heat Demand by Thermostat Water Pump Request No request Enabled Disabled Run Stop Time When pin is ON pump will be in ECONOMY operation Economy operation allows pum...

Page 151: ...OVRT Pump 1 overrun time 10 10 120 5 min Recirculation option Only for economy mode When recirculation option is enabled pumps will operate regularly when they are stopped by Room thermostat Demand OFF condition Request No request Run Stop Time 0 1 0 1 7 001 7 002 7 003 Heat Demand by Thermostat Water Pump CODE REF Description Default Value Range Steps Units 7 002 PRCOFF Pump recirculation time OF...

Page 152: ... 2 Time CODE REF Description Default Value Range Steps Units 8 002 SeizPr Seizure Protection Status Disabled Disabled Enabled 8 010 Oplnt Operation Day Mon Mon Sun Day 8 011 StTim Start Time 00 24 01 00 00 24 Time These Installer parameters control the optional seizure function They are used to enable seizure protection and set its activation time When this happens follow these instructions Make s...

Page 153: ...ps 1 2 3kW 1x230V RWM 4 0FSN3E 6kW 3 steps 2 4 6kW 1x230V or 3x400V RWM 5 0FSN3E 6kW 3 steps 2 4 6kW 1x230V or 3x400V RWM 6 0FSN3E 6kW 3 steps 2 4 6kW 1x230V or 3x400V RWM 8 0FSN3E 9kW 3 steps 3 6 9kW 3x400V RWM 10 0FSN3E 9kW 3 steps 3 6 9kW 3x400V User Variables CODE REF Description Default Value 5 000 HS Complementary Heating Only HP Heater Boiler Heater Boiler Only HP Heater bivalent point Heat...

Page 154: ... User Variable CODE REF Description Default Value Range Steps Units 5 005 WTEH Wait time for electric Heater 30 0 90 1 min Heater inter stage steps control After each step increase further step increases are prohibited during ISWT to avoid hunting Step decrease does not have this limitation Since sampling time is 1 minute at least 1 minute needs to pass between any step changes In any of the follo...

Page 155: ...itary Water operation will be explained in its own sub heading below Boiler High temperature 60 ºC Low temperature 35 ºC Boiler signal Boiler will only operate when Heating Accessory is set to Boiler or Heater Boiler Boiler and Heater can never work at the same time The decision as to how to operate is based on ambient temperature and is explained in Use Boiler Heater below System protection will ...

Page 156: ... 57ºC Make sure that the non return valves field supplied are correctly installed in the system as shown in the illustration above Boiler bivalent point Unit should be sized to operate mainly in heat pump mode Given that capacity is reduced with temperature it may be desirable for the unit to use boiler accessory only when ambient temperature is low Boiler will only be enabled when Outdoor Ambient...

Page 157: ...or Disabling Unit will not enable boiler operation in any of the following conditions are met 1 Demand OFF by Room Thermostat 2 Ambient temperature Boiler Bivalent point 6 007 more than 10 minutes User variables CODE REF Description Default Value Range Steps Units 6 001 kscob Supply set point control offset 4 0ºC 0 10 1 ºC 6 006 WTBO Waiting time for boiler 30 min 1 90 1 min Conditions for THERMO ...

Page 158: ...uest Request No request OFF ON Time User Variables CODE REF Description Default Value Range Steps Units 6 004 Bon Boiler minimum ON time 2 min 1 30 1 min 6 005 Boff Boiler minimum OFF time 5 min 1 30 1 min Note Maximum water temperature of the installer have priority against Boiler minimum ON Time Emergency mode When user allows emergency mode DSW4 4 ON boiler may operate in said mode In the case ...

Page 159: ...ure for Heater 5 006 Heat Pump and Heater disabled and Boiler enabled if Ambient Temperature Bivalent outdoor temperature for Boiler 6 007 Ta 20 5 006 Heat Pump only Only Boiler Heat Demand Heat pump capacity Heater Heat Pump 6 007 20 Heat pump capacity Heat pump Heat pump only Only Boiler Heat Demand Heater 20 20 5 006 6 007 Text ºC CAP kW N ote Boiler operation is only for bivalent system altern...

Page 160: ...tion If Sanitary Water does not require Heat Pump operation it is stopped or works with heater only there is no restriction on the other operation modes Sanitary water modes Standard High demand DHW loading has two different modes STANDARD Mode and HIGH DEMAND Mode STANDARD Mode The domestic hot water tank will start heating when water temperature in tank is low enough for Heat Pump to be started ...

Page 161: ...demand mode differential TDHWON Sanitary Water Heater will start when following conditions are met System is set to HIGH DEMAND Mode Other functions may cause Sanitary Water Heater to start regardless of this control For example Sanitary Water Heater may be started by Electric Heater Wait time CODE REF Description Default Value Range Steps Units 3 023 TDHWON DHW differential 6 2 15 1 ºC Time TDHW ...

Page 162: ...s when TDHW is greater than THPSTOP After this stoppage unit should continue heating sanitary water tank by means of sanitary tank electric heater until stoppage conditions are met TDHW THPSTART THPSTOP T ºC TDHWS THPMAX THPOFF THPON Heater Operation Time Heat Pump Operation Example of temperature settings Case 1 Case 2 TºC TDHWS THPMAX THPSTOP THPSTART 70 60 54 44 TºC THPWTS TDHWS THPSTOP THPSTAR...

Page 163: ... using Heat Pump mode Heater operation is not affected by it Heat Pump will not stop if Heat Pump Operation Time TDHWMIN Stoppage by TDHWS Domestic Hot Water Temperature Setting has priority over this timer so it may stop the system regar dless of Heat Pump Operation Time Heat pump will stop when Heat Pump Operation Time TDHWMAX When Heat Pump is stopped by this function Sanitary Water will contin...

Page 164: ...t Sanitary Water Heat Pump operation CODE REF Description Default Value Range Steps Units 3 028 CDHW Cycle DHW time 1 0 24 1 hour 3 026 3 027 3 028 1 0 1 0 Time Hot water request DHW operation Request No request ON OFF DHW electric heater wait time If Heat Pump cannot offer sufficient capacity it will be necessary to start Heater in order to supply additional capacity Heater will start if Heat Pum...

Page 165: ...ided inside the unit through LCD Controller Sanitary Water operation may be enabled or disabled by this timer N ote For more information refer to User interface chapter Using boiler for DHW The boiler may also be used to raise the temperature of the DHW if the Heat Pump is not able to reach the DHW set point by itself The boiler will only start after BWTt has passed since heat pump operation Howev...

Page 166: ...mming Pool 3 way valve Field supply 3 way valve Field supply Swimming Pool Function will only be enabled if It is enabled by user interface Heat Pump is turned OFF or Thermo OFF by any other system Swimming pool is enabled by swimming pump feedback Swimming Pool will start if Swimming Pool Temperature SWPS 3 033 1ºC Swimming Pool will stop if Swimming Pool Temperature SWPS 1ºC Remember that unit c...

Page 167: ... of the glycol solution in the solar panel rises above the water temperature in the domestic hot water tank the pumps from the solar pump station and the solar kit begin operating in order to transfer the heat to the domestic hot water tank s heat exchanger 3wv DHWT Solar Panel Sensor Solar 2 Field supply Solar Pump Control Field Supply 3wv SOLAR To solar combination options space heating swimming...

Page 168: ...rd Solar station control If the solar pump station has an ON OFF AUTO function make sure to put it on the AUTO function This means that the pump will switch ON automatically when the solar panel temperature rises sufficiently above the domestic hot water tank temperature and switch OFF automatically when the difference between the solar panel and the domestic hot water tank temperature becomes too...

Page 169: ...rature ºC TDHWS Domestic Hot Water Tank temperature setting ºC Default 45ºC TDHWON Domestic hot water differential ºC temperature drop that starts DHW Default 10ºC TDHWMAX Domestic Hot Water tank maximum supply temperature ºC Default 70 ºC If conditions are fulfilled heating DHW by Heat Pump will be switched OFF and heating will be done by solar station through YUTAKI S s auxiliary output signal I...

Page 170: ...p or heater depending on water condition If the DHW is banned by Timer or Tariff function Sanitary tank will stop CODE REF Description Default Value Range Steps Units 3 126 TDHWMSOL DHW SOLAR maximum time 60 30 240 1 min TDHWSMAX Hot water request DHW heating by solar DHW heating by HP EH DHW heating Time When TDHWTMSOL passed wait Maximum DHW Time defeault 45 min from MAXIMUM MINIMUM DHW LOADING ...

Page 171: ...taken during installation The location of the RF components as well as the building structure may influence performance of the RF system To assure system reliability please review and apply the information given below Within a typical residential building the two products should communicate reliably within a 30m range It is important to take into consideration that walls and ceilings will reduce t...

Page 172: ...open space Leave at least 30cm distance from any metal objects including wall boxes and boiler housing Do not mount on metal wall boxes Note The receiver box contains no user serviceable parts It should be opened and installed by qualified installer only caution Electrostatic sensitive device Do not touch the circuit board Note All wiring must be in accordance with IEE regulations caution Observe ...

Page 173: ...F Receiver contains no user serviceable parts It should be opened and installed by qualified installer only caution Static electricity Malfunction Do not touch the circuit board max 30m 2 x 0 5mm2 2 x 0 8mm2 RF Receiver Unit 3 4 The RF Receiver can be connected to other Open therm appliances For the correct wiring connections refer to the installation manual of the Open therm device N ote All wiri...

Page 174: ...for the first time after the batteries are inserted the display will show Press the or buttons to set the current day of the month e g d 01 1st day of the month then press the green button to confirm b Press the or buttons to set the current month of the year e g m 01 January then press the green button to confirm c Press the or buttons to set the current year e g yr 07 2007 then press the green b...

Page 175: ...display test and it will send test signals to the RF Receiver If the test signals are received the LED on the RF Receiver will flash between 1 and 5 times The number of flashes indicates the strength of the radio signal The higher the number of flashes the stronger the signal is N ote If the LED does not flash or if you are installing a replacement RF Receiver or Room Unit follow the procedures de...

Page 176: ...0 1 sec ON and 0 9 sec OFF Once the faulty device has been identified replace as necessary and follow the re binding procedure as described in sec tion Binding Rebinding Procedure Installer Mode Installer Mode is used to alter the system settings for specific applications to use the special features of the Room Unit in a different way or to alter the factory preset parameters Parameters are divide...

Page 177: ...rrect value Failure to do this will mean that the heating system will not respond to changes in the setpoint on the Room Unit Under these circumstances the system will operate with no input from the Room Unit and may not therefore provide adequate temperature control Using the Special Features of the Room Unit Special Feature Description Enable Disable Heating or Cooling Operation This product can...

Page 178: ...t Time Temp Program 2 rP 1 Time Temp profile set to factory default Changes to 0 when one of the time temp profiles are changed 0 Time Temperature are as programmed To restore the factory profile set to 1 Auto Summer Win ter Time Change 3 tC 1 Auto Summer Winter Time Change Enabled 0 Auto Summer Winter Time Change Disabled LCD Backlighting 5 bL 1 Backlighting Enable 0 Backlighting Disabled Upper T...

Page 179: ... the Installer Mode press the or button Binding Rebinding Procedure ON OFF Thermostat ATW RTU 01 The binding operation described below is required if Any of the system components Room Unit or RF Receiver are replaced The RF Receiver has incorrect or no binding data stored e g when pre bound system pack components have been mismatched N ote During the binding procedure keep approximately 1m distanc...

Page 180: ... unit Press and hold the receiver button for 5 seconds Next select the circuit to be linked inside the binding zone Af ter selecting between the two circuits the following window will appear BINDING CIRCUIT 1 CANCEL START Pressing start will begin the binding mode in the room unit It will blink each second during the specified binding time When bin ding is finished a success message will appear BI...

Page 181: ...ss the start button on the screen Start the binding mode on the thermostat Refer to its instruction manual Press Ok button on the thermostat to confirm binding The display will show a confirmation message If the binding is not confirmed for 30 seconds an error message will appear N ote Be carefull because if the power supply is stopped on the remote thermostat or his receiver it will keep the last...

Page 182: ...backlight 7 day heating cooling program to match your lifestyle whilst maximising energy savings 6 independent temperature levels per day from 5 C to 35 C Holiday button saves energy by letting you reduce the temperature for 1 to 99 days Built in Memory holds the user program indefinitely Controls Layout 1 6 OFFMAN AUTO 1 2 3 4 5 6 7 PROGRAM 15 14 16 1 2 4 3 5 7 8 9 6 11 12 13 10 LCD Screen Temper...

Page 183: ...in setting the date b Press the or buttons to set the current day of the month e g d01 1st day of the month then press the green button to confirm c Press the or buttons to set the current month of the year e g m01 January then press the green button to confirm d Press the or buttons to set the current year e g yr08 2008 then press the green button to confirm The date is now stored and the Day Ind...

Page 184: ...rogram To change the heating program a Press either of the PROGRAM or buttons to enter the programming mode The time temperature settings for period 1 on Monday Day 1 will be flashing as shown The active period is highlighted by a flashing squa re around the numbers at the bottom of the screen and the selected day is shown with the day indicator b To adjust the period start time use the or buttons...

Page 185: ...o the heating program profile To disable or enable time periods a To disable unwanted periods go to the desired period 2 to 6 using the PROGRAM or buttons to navigate ensure the correct period is highlighted with the flashing square symbol Press and hold the button for at least 2 seconds and the display will indicate the period has been removed from the program b To enable periods again follow the...

Page 186: ...r c Press the or time buttons to set the holiday time 1 99 days and press the green button to confirm d Press the or buttons to set the holiday temperature 5 C 35 C and press the green button to confirm The Room Unit will now control to the new temperature for the set number of days that your home is vacant At midnight the holiday counter will be reduced by one until the selected number of days ha...

Page 187: ...r a few seconds Wrong electrical connection Call the installer to check the electrical connections The red LED on the RF Receiver located next to heat pump con troller is constantly on or flashing RF communication lost due to the wrong location of the Room Unit Hook the Room Unit back on the wall bracket or replace the Room Unit on the table stand in the position where RF com munication was reliab...

Page 188: ......

Page 189: ...definitions 152 6 2 Comprehensive view 152 6 3 Description of the icons 154 6 4 Controller configuration 156 6 5 Unit configuration 157 6 5 1 Operation display 157 6 5 2 Space heating configuration 158 6 5 3 Space cooling configuration 160 6 5 4 DHW 162 6 6 Installer access 165 6 6 1 Unit configuration 166 6 6 2 System configuration 168 ...

Page 190: ...s a cancel button when editing an item and also used to go to the main menu from the general display HITACHI OK 1 2 3 4 6 2 Comprehensive view Main screen is called comprehensive view It provides the gene ral system information Move through this view using the arrow buttons Time Date Alarm indication and Unit Status signals are displayed on all screens Only the following parameters can be modified...

Page 191: ... Water pumps Supplementary solar system Compressor ON Swimming Pool Boiler working Tariff input Test Run Auto Summer Switch Off Configuration Menu Unit configuration Control configuration This icon indicates when it is possible to go to the configuration menu If the icon is displayed the user may return to the menu by pressing the back button It has different options that can be confi gured as sho...

Page 192: ...ure 888 Setting Temperatures Value Displays the temperature setting of the circuit or DHW OFF Circuit or DHW are stopped Ban icon is displayed when a timer bans the tank This mean that there is a timer assigned for the current day but the current time is outside the permitted period Mode System is working in heating mode System is working in cooling mode Pump This icon informs about pump operation...

Page 193: ...ction is applied DHW Timer When the timer is configured and enabled this icon will go with the active timer number Defrost Defrost function is active Test Run Informs about the activation of the Test Run function in the outdoor unit Summer Switch Off Notifies that heating is off because Summer Switch Off is activated Menu This icon allows user to go to the main menu by pressing Return button The c...

Page 194: ...t functions that depend on time and date will affected even when the format displayed is None TIME AND DATE Configuration Hour Minute Day Period Time Format Day Month Year Complete Language selection User can set different languages in order to better understand the menu They are selectable from the following view There are 5 available languages English EN French FR Italian IT Spanish ES German DE...

Page 195: ...ting Variable value 1 006 Cause of stoppage Variable value 1 010 Compressor running current A Variable value A 1 011 PCB Firmware Variable value 1 012 Product spec code Variable value 1 013 Mixing valve position Variable value Actual Temperature 1 014 Water Inlet Tº Variable value ºC 1 015 Water outlet Tº Variable value ºC 1 115 Water outlet Tº Boiler Variable value ºC 1 215 Water outlet Tº C2 Var...

Page 196: ...on variable type HITACHI AM PM WATER CALCULATION Tº C1 Type Points WATER CALCULATION Tº C 1 Type Points Point Point is the most versatile calculation type The user sets four po ints that will create line representing the function the Air to water heat pump will be use to give the temperature setting according to the current ambient temperature HITACHI AM PM WATER CALCULATION Tº C1 Type Points TS1L...

Page 197: ...2 None None Points Gradient Fix 1 Heating OTC points Control C1 3 005 Low ambient Tº C1 20 20 6 1 ºC 3 006 High ambient Tº C1 20 7 25 1 ºC 3 007 Set point at low ambient Tº C1 44 3 012 3 011 1 ºC 3 008 Set point at high ambient Tº C1 20 3 012 3 011 1 ºC Heating OTC points Control C2 3 105 Low ambient Tº C2 20 20 6 1 ºC 3 106 High ambient Tº C2 20 7 25 1 ºC 3 107 Set point at low ambient Tº C2 44 3...

Page 198: ... to edit the water calculation variable type WATER CALCULATION Tº C1 Points Type Points WATER CALCULATION Tº C 1 Point Point is the most versatile calculation type The user sets four points that will create line representing the function the Air to water heat pump will use to give the temperature setting according to the current ambient temperature N ote In case of refreshing floor application it ...

Page 199: ... None Points Fix 1 Cooling OTC points Control C1 3 014 Low ambient Tº C1 23 17 30 1 ºC 3 015 High ambient Tº C1 32 31 45 1 ºC 3 016 Set point at low ambient Tº C1 22 3 020 3 019 1 ºC 3 017 Set point at high ambient Tº C1 16 3 020 3 019 1 ºC Cooling OTC points Control C2 3 014 Low ambient Tº C2 23 17 30 1 ºC 3 015 High ambient Tº C2 32 31 45 1 ºC 3 016 Set point at low ambient Tº C2 22 3 120 3 119 ...

Page 200: ...s is a programmable timer that allows banning the usage of DHW only on the assigned periods Anti legionella this is a configuration view designed to set the water desinfection method They are explained in the following chapters Note Valve 3 1 2 is set by installer caution Anti legionella function is hidden to the user by default Installer may display it Anti legionella will set the water temperatu...

Page 201: ...eriod configuration is confirmed it will be saved if the permission period is enabled Prior to this it will check to see if From time is lower than To time in which case an error message will appear and you will return to this screen Note that if one permission period ends within another DHW will be allowed until the end of the period that ends the latest DHW PERMISSION PERIOD 1 DHW PERMISSION PER...

Page 202: ...Disabled Enabled 3 033 Swimming pool set point Tº 24 24 33 1 ºC Optional functions This menu will display optional functions to the user Code Description Default Value Range Steps Units Summer Switch Off Tariff function Summer Switch Off This summer switch off function can be configured to auto mode Code Description Default Value Range Steps Units 8 001 Auto Switch Off Status Disabled Disabled Ena...

Page 203: ...ller is Right Down Left Right Press Ok to confirm the password If the correct access code is entered the installer mode icon will appear on the notifications bar bottom line Installer mode icon Installer level access remains active for 30 minutes After that time it is necessary to repeat the log in process To exit the Installer mode and return to the unit menu hold down the backspace for 3 seconds...

Page 204: ... 63 1 The installer may configure the system address here so as to allow for proper configuration caution OU and IU must be at the same setting as that on the unit PCB address The Room Thermostat Options submenu will display the following variables CODE REF Description Default Value Range Steps Units Room Thermostat Options 3 002 RTT Thermostat Type ON OFF ON OFF Intelligent 1 BIN Circuit Binding ...

Page 205: ...the thermostat manual for instructions After activation confirm by pressing the OK button After that if binding is completed the following message will appear on the controller BINDING CIRCUIT 1 BINDING COMPLETE ACCEPT If binding fails the BINDING FAILURE error message will appear Note The same process applies to circuit 2 when selected on the menu In summary the binding process follows the steps ...

Page 206: ...nimum Supply Tº 20 20 34 1 ºC N ote 55ºC for RWM 2 0FSN3E 80ºC when boiler combination Space cooling These are the same views as those displayed in user mode with the addition of maximum and minimum water temperature settings for each circuit CODE REF Description Default Value Range Steps Units C1 Tº Range 3 019 Tmax1 Maximum Supply Tº 22 19 22 1 ºC 3 020 Tmin1 Minimum Supply Tº 16 5 18 1 ºC C2 Tº...

Page 207: ... Complementary heating It will display the same parameters with the addition of the those listed below CODE REF Description Default Value Range Steps Units Electrical Heater Configuration 5 006 MOT Bivalent Point for EH 0 20 20 1 ºC 5 001 ksco Supply Set Point Offset 4 0 10 1 K 5 002 PB Proportional Band ºC 100 6 0 0 20 0 2 ºC 100 5 003 IRF Reset Factor ºCmin 2 5 0 20 0 1 ºC Min 5 004 ISWT Inter S...

Page 208: ...Time min 10 0 120 5 Min 7 202 OTO Over Tº Offset C2 5 1 10 1 ºC Screed drying It takes 7 days and the Installer must configure target temperatures for the available circuits in order for it to work properly SCREED DRYING Configuration Circuit 1 Target Temperature Circuit 2 Target Temperature CANCEL START It is advisable to exit the Installer mode by pressing the Start button as the operation takes...

Page 209: ...its 8 002 SeizPr Seizure Protection Status Disabled Disabled Enabled 8 010 OpInt Operation Day Mon Mon Sun Day 8 011 StTim Start Time 00 24 01 00 00 24 Time These Installer parameters control the optional seizure function They are used to enable seizure protection and set its activation time When this happens follow these instructions Make sure mixing valves are fully opened and then fully closed ...

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Page 211: ...HW anti legionella protection function 176 7 1 5 Tariff input electrical tariff input 177 7 1 6 Electrical heater or boiler emergency mode 178 7 1 7 Step heater for 3 phase imbalance option 179 7 1 8 Hydraulic separator combination 179 7 1 9 Secondary outdoor sensor accessory 179 7 1 10 Indoor external output signals 180 7 2 Outdoor units 181 7 2 1 Available ports 181 7 2 2 Configuration 183 7 2 3...

Page 212: ...mperature ºC Days 1 Water set point is kept constant at 25ºC for 3 days 2 Water set point is set to the Heating maxi mum supply temperature but always limited to 55ºC for 4 days 3 After 7 days started the floor screed drying the water outlet temperature will return at the assigned water temperature setting depen ding on the water rule selected Upon completion of the above sequence the controller r...

Page 213: ...l not check anything After that it will adjust the average with the new sample and check the con ditions every 5 minutes N ote Deactivate space heating when checking conditions User may activate it using on off button which will restart the function and reset the average The checking conditions are Condition Action Average Summer Switch OFF Tº 8 102 HEATING OFF Average Sum Sw Off Tº 8 102 Sw diffe...

Page 214: ...se if there is a DHW electric heater to raise the DHW temperature to this high temperature Note According to national regulation the installer must configure this disinfection function field setting Configuration parameters Operation interval day s of the week at which the domestic water should be heated Status defines whether the disinfection function is turned ON 1 or OFF 0 Start time time of th...

Page 215: ...nction enabled disabled Disabled Disabled Enabled 8 010 Tariff action 00 03 00 00 Heat pump blocked when signal is closed 01 Heat pump blocked when signal is open 02 DHW blocked when signal is closed 03 DHW blocked when signal is open 8 009 Use boiler instead of heat pump when TARIFF Mode is ON Disabled Disabled Enabled 8 011 Use DHW Heater instead of heat pump when TARIFF Mode is ON Disabled Disa...

Page 216: ...nditions a b c d is fulfilled a Measured outlet temp value targeted b Outlet water temp set at Max water range temp by installer c Thermo OFF by Room Thermostat d Indoor unit alarm N ote Water pump1 primary will be activated with electric heater Water pump3 will be activated with boiler If Heater emergency mode is activated the Hot sanitary water electric heater will be activated in the same way f...

Page 217: ...e used to ensure proper water pump sizing When the boiler is configured to alternate with the heat pump a hydraulic separator or buffer tank must be used to ensure proper hydraulic balancing Additional Water pump WP3 and water sensor Two3 are necessary for boiler combination control User variables CODE Description Default Value 8 010 hsb Hydraulic Separator Disabled Enabled Disabled 7 1 9 Secondar...

Page 218: ...following table Code Name Description Port o1 Operation signal This signal allows control of the machine s status at all times it is very useful for centralized applications The signal will be enabled when Thermo ON operation CN7b 1 3 o2 Alarm signal This signal allows activation of mechanisms that protect from and warn of possible failures in the unit The signal will be enabled when the unit is i...

Page 219: ... has the following optional functions which are programmed in the PCB of the outdoor unit 7 2 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 Outputs 1 1 2 of CN7 DC 12V 2 1 3 of CN7 DC 12V Connection The system has the following connections Output connections Indication Connections o1 CN7 o2 CN7 ...

Page 220: ...Wire control Voltage 12V DC 0 5 mm Wire power Voltage 230V 2 0 mm Note 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 supply wire insert the wires in a metal conduit tube...

Page 221: ...ional systems such as humidifiers fans and other additional air conditioning systems CN7 02 Alarm signal This signal picks up the machine s alarm This is very useful to warn that an alarm has been tripped CN7 03 Compressor ON signal This single allows to pick up the compressor s operation signal It is very useful for checking signals during remote control operation and for the interlock of the out...

Page 222: ...gnals of the outdoor unit are set up from the PCB of the outdoor unit and push switches PSW1 PSW2 and PSW3 1 1 Factory setting PSW2 PSW3 Not available 2 2 Factory setting PSW2 PSW3 Not available 3 3 Factory setting PSW2 PSW3 Not available Output setting 1 CN7 1 2 o1 1 Factory setting PSW1 SET PSW2 PSW3 0 7 Output setting 2 CN7 1 3 o2 2 Factory setting PSW1 SET PSW2 PSW3 0 7 Set ...

Page 223: ...Note that the contact of auxiliary relay X3 is closed when an operation signal is issued Operation signal of the compressor 3 This optional signal is used to pick up the signal when the compressor is ON It can be used to check how the compres sor 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 secti...

Page 224: ......

Page 225: ...ng Index 8 1 Preliminary check 188 8 1 1 Checking the unit 188 8 1 2 Electrical checking 188 8 1 3 Hydraulic circuit checking 188 8 1 4 Checking the Refrigerant circuit 189 8 2 Commissioning procedure 189 8 3 Indoor unit test run 190 8 4 Outdoor unit test run 191 ...

Page 226: ... field supplied electrical components main switches breakers wires conduit connectors and wire terminals have been properly selected according to the electrical specifications given in the unit s Technical Catalogue and check that the components comply with national and local standards Do not touch any electrical components for more than three minutes after turning OFF the main switch Check the di...

Page 227: ...the User interface Make a test run as shown in item Indoor unit test run After rest run is completed start the entire unit or the selected circuit by pressing the Run Stop button Initial start up at low outdoor ambient temperatures During commissioning and when water temperature is very low it is important for the water to be heated gradually Additional optional function can be used for starting a...

Page 228: ...n CANCEL START Duration The duration will be between 00 30 and 12 00 hours After pressing start Outdoor unit will begin the test run During the execution of this test the following screen will be displayed TEST RUN Operation display parameters Pending time 44h 20m 19s CANCEL System Operation Unit Status Actual temperatures Set point When test run is set on the outdoor unit the test run icon will a...

Page 229: ... from the remote control switch or the DSW1 1 of the outdoor unit Continuous operation du ring 2 hours is performed without the Thermo OFF condition Make sure that the indoor units start to operate in accord with the test run of the outdoor unit If you start the test run from the outdoor unit and you stop the test run from the remote control switch the test run function of the remote control switc...

Page 230: ......

Page 231: ...Overload control 198 9 2 Thermistor 199 9 3 Electronic expansion valve 202 9 3 1 Electronic expansion valve for the outdoor unit 202 9 3 2 Electronic expansion valve for the indoor unit 203 9 4 High pressure protection device 204 9 5 Noise filter NF 205 9 5 1 Noise filter for 1 205 9 5 2 Noise filter for 3N 206 9 6 Capacitor CB1 CB2 206 9 7 Reactor DCL 207 9 7 1 Reactor DCL for 1 207 9 7 2 Reactor...

Page 232: ...ype volt meter X1 1 Soft start stop 0 1 0 5 1 3 Hz s 4 steps 0 125 0 5 1 2 Hz s 4 steps 0 125 3 00 Hz s Protection function Excessive high or low voltage for in verter Excessive low voltage at a voltage is lower than 194V DC Excessive high voltage at a voltage is higher than 420V DC Excessive low voltage at a voltage is lower than 350V DC Excessive high voltage at a voltage is higher than 750V DC ...

Page 233: ... maintained longer than 30 seconds or accumulated longer than 3 minutes during 10 minutes sampling time Protection of transistor module IPM has four protection function for self protection 1 Some of the output terminals between U and V V and W W and U has a short circuit 2 Running current reaches the maximum rated current 3 Abnormal temperature is measured by internal thermistor 4 Control voltage ...

Page 234: ...al Activation of protection device Failure signal Soft start stop frequency Output voltage Frequency instruction Main circuit power source Frequency HIGH Frequency LOW All bit 1 All bit 1 operation The changing speed dependes on the outer setting Output Transmit error 30 sec 10 sec Activation recovery Protection activation ...

Page 235: ...frequency between 15Hz and 18Hz an abnormality is detected b Function When abnormalities are detected the inverter compressor is stopped and transmit the signal code of stoppage cause 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 3 Overcurrent protection for inverter a Level ...

Page 236: ...unction Transmission for signal code of stoppage cause is canceled when a stopping order is issued or main power sour ce is cut off 6 Earth detection a Level of detection When the starting current of the compressor reaches 80 of the overcurrent protection value an abnormality is detected b Function When abnormalities are detected the inverter compressor is stopped and the signal code of stoppage c...

Page 237: ...mistor for dis charge gas tempe rature THM9 Thermistor for outdoor ambient temperature THM7 Thermistors for the indoor unit Thermistor for water outlet PHEX temperature THMWOHP Thermistor for refrigerant gas temperature THMG Thermistor for water outlet temperature THMWO Thermistor for water inlet temperature THMWI Thermistor for refrigerant liquid temperature THML ...

Page 238: ... is are opened to return the liquid refrigerant to the compressor through the accumulator decreasing compressor temperature If the compressor upper part temperature increases exceeding 132ºC even if an electronic expansion valve opens the compressor is stopped in order to protect the compressor In cooling operation the above function is also available Temperature ºC Resistance characteristics of t...

Page 239: ...mistor resis tance KΩ Ambient temperature ºC Thermistor characteristics 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 Thermistor for evaporating temperature of outdoor unit in heating operation for defrosting Thermistor resis tance KΩ Ambient temperature ºC Thermistor characteristics 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 ...

Page 240: ...AS 4 10 H V RNM E Type UKV 10 0 USRT series UKV 5 0USRT series for MVB Refrigerant R410A Working temperature range 30 C 65 C operation time of the coil less than 50 Mounting direction Drive shaft in vertical direction within an angle of 45 as maximum Flow direction Reversible Drive method 4 Phase canned motor method Rated voltage DC12V 1 8V Drive condition 83PPS pulse width at ON 36mm sec OFF 60mm...

Page 241: ...lows Valve Valve sheet Valve body Items Specifications Type EDM type Refrigerant R410A Working temperature range 30 C 70 C with coils which are not electrified Mounting direction Drive shaft in vertical direction motor upside and 90 in four direction Flow direction Reversible Drive method 4 phase pulse motor Voltage rate DC12V 1 2V Drive condition 100Ω 250PPS pulse width over 3mm 2 phase excitatio...

Page 242: ...pper cover Rear cover Electrical box Presure switch for control PSC Brazing Discharge pipe High pressure switch PSH Brazing 1 For controlling the high pressure not to increase excessively during heating operation the gas by pass circuit and the air volume of the outdoor fan is controlled automatically 2 The gas by pass circuit which is composed of the solenoid valve and the capillary tube for flow...

Page 243: ... 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 9 5 1 Noise filter for 1 RAS 3 6 HVRNME AF 230V 50Hz Items Specifications Model LFB 14930 3M Rated current AC230V 30 A Permissible temperature range 25 ºC to 85 ºC Circuit diagram Load Line ...

Page 244: ...ble temperature range 25ºC to 85ºC Circuit diagram HRNM E Line Load 9 6 Capacitor CB1 CB2 This part is used for changing the alternative current to the direct current for the inverter Connect two capacitor in line and used RAS 4 6 HRNME AF 400V 50Hz Items Specifications Models LNX2G472MSEAHE Capacity of static electricity 4700μF Rated voltage 400 VDC Permissible temperature range 25ºC to 95ºC ...

Page 245: ...ctor DCL for 1 RAS 3 6 HVRNME AF 230V 50Hz Items Specifications Character 0 59 mH 15 at 1 kHz Rated current 30 A DC Resistance 26 mΩ at 20 C Permissible temperature range 20ºC to 60ºC 9 7 2 Reactor DCL for 3N RAS 4 10 HRNME AF 400V 50Hz Items 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 ...

Page 246: ...he gas is inhaled from the inlet port at the outer frame of the fixed scroll 2 The gas inside of the compression space is compres sed 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 dischar ged from the outlet port of at the center of the scroll 4 The above procedures suction compression dischar ge is repeated ...

Page 247: ... rev 1 08 2011 237 10 10 S par e p art s Index 10 1 Outdoor units 210 10 1 1 RAS 2HVRN2 210 10 1 2 RAS 3HVRNME AF 212 10 1 3 RAS 4 6 HVRNME AF 215 10 1 4 RAS 4 6 HRNME AF 218 10 1 5 RAS 8 10 HRNME AF 221 10 2 Indoor units 224 ...

Page 248: ...08 2011 238 10 1 Outdoor units 10 1 1 RAS 2HVRN2 Cycle structural and electrical parts 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 Spare Parts Document EPN 200702 ...

Page 249: ...A Expansion valve U21B Coil for expansion valve U27A 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 assembly U51 Propeller fan U70 Compressor U71 Motor U78 Oil heater U79 Four way valve assembly U81 Coil for 4 way valve U82 Transform...

Page 250: ...10 Spare parts SMGB0070 rev 1 08 2011 240 10 1 2 RAS 3HVRNME AF Cycle and structural parts Spare Parts Document EPN 201005 ...

Page 251: ...10 Spare parts SMGB0070 rev 1 08 2011 241 10 Electrical parts Spare Parts Document EPN 201005 ...

Page 252: ...S valve 3 8 Liquid U27B S valve 5 8 Gas U28 Check JA U30A Strainer U30B Strainer U30C Silencer U32A VP RUBBER 2 U32B VP RUBBER 1 U34A Front protector net Outlet U34B Protector net S assy Inlet U40 Condenser Assembly U51 Propeller fan U58 Accumulator U65A Holder U65B Spacer Electrical parts No Part name Remarks U71A Fan motor 74W U72 MG SW U78 Oil heater 30W U79 4 way valve U81 Coil for 4 way valve...

Page 253: ...10 Spare parts SMGB0070 rev 1 08 2011 243 10 10 1 3 RAS 4 6 HVRNME AF Cycle and structural parts Spare Parts Document EPN 201005 ...

Page 254: ...10 Spare parts SMGB0070 rev 1 08 2011 244 Electrical parts Spare Parts Document EPN 201005 ...

Page 255: ... U30B Strainer U32A VP RUBBER 2 U32B VP RUBBER 1 U34A Front protector net Outlet U34B Protector net L assy Inlet U40 Condenser Assembly U40 Condenser Assembly U51 Propeller fan U58 L Tank U65A Holder U65B Spacer Electrical parts No Part name Remarks U70 Compressor U71A Fan motor 74W U71B Fan motor 74W U72 MG SW U77A Solenoid valve U77B Coil for solenoide valve U78 Oil heater 40W U79 4 way valve U8...

Page 256: ...10 Spare parts SMGB0070 rev 1 08 2011 246 10 1 4 RAS 4 6 HRNME AF Cycle and structural parts Spare Parts Document EPN 201005 ...

Page 257: ...10 Spare parts SMGB0070 rev 1 08 2011 247 10 Electrical parts Spare Parts Document EPN 201005 ...

Page 258: ... Protector net L assy Inlet U40 Condenser Assembly U51 Propeller fan U58 L Tank U65A Holder U65B Spacer Electrical parts No Part name Remarks U70 Compressor U71A Fan motor 74W U71B Fan motor 74W U72 MG SW U74A Resistor U74B Resistor U77A Solenoid valve U77B Coil for solenoide valve U78 Oil heater 40W U79 4 way valve U81 Coil for 4 way valve U82A Transformer U82B Reactor U85A Printed circuit board ...

Page 259: ...77B U30C U01A U01B U79 U81 U77B U77E U42 U28 U55 U51 U01C U30B U77C U77D U40A U40B U15B U15A U58 U15C U78 U70 U32B U32A U98A U98B U51 10 LOCATION OF SPARE PARTS IN THE UNIT MODEL RAS 8HRNM RAS 10HRNM RAS 12HRNM D RAS 8HRNM H I P D RAS 10HRNM H I P D RAS 12HRNM H I P U34 U34 U30D U27B U27A U21A U21B U30A U71B U71A U77A U77B U30C U01A U01B U79 U81 U77B U77E U42 U28 U55 U51 U01C U30B U77C U77D U40A U...

Page 260: ...4C 11 ELECTRICAL EQUIPMENT MODEL RAS 8HRNM RAS 10HRNM RAS 12HRNM 3φ 380 415V 50Hz 3 φ 380V 60Hz D RAS 8HRNM H I D RAS 10HRNM H I D RAS 12HRNM H I Q P View from P View from Q U04 U74A U74B U18 U14A U14A U17 U65D U15D U85B U14B U82B U16A U65B U85E U85C U85D U16B U65C U65B U65A U65C U65A U85A U82A U72 U74C 11 D RAS 8HRNM H I D RAS 10HRNM H I D RAS 12HRNM H I Q View from Q U04 U14A U17 U65D U15D U85B ...

Page 261: ...oard Fan control U85E Printed circuit board Phase detection U98A Cabinet panel U98B Cabinet panel Cycle and structural parts No Part name Remarks U01A Pressure Sw High pressure U01B Pressure Sw For control U01C Pressure Sw Low pressure U04 Fuse 40A 60A U14A Capacitor 4700µF U14B Capacitor 7µF U15A Thermistor U15B Thermistor U15C Thermistor U15D Thermistor U16A Noise filter U16B Noise filter U17 Tr...

Page 262: ...arts RWM 2 0 6 0 FSN3E 1 2 3 4 5 6 7 7 1 7 2 7 3 7 4 8 9 33 11 12 13 14 15 17 19 20 18 21 22 23 24 25 7 7 7 6 7 8 7 5 7 9 7 10 13 1 13 2 26 27 11 2x 12 1x 11 2x 16 28 29 30 31 31 31 32 10 34 35 PUMPAND HEATER CONNECTIONS SIDE VIEW EXP VESSEL CONNECTION Spare Part Document EPN 201010 ...

Page 263: ...ION PUMPAND HEATER CONNECTIONS SIDE VIEW 1 2 3 4 5 6 7 7 1 7 2 7 3 7 4 8 9 33 11 12 13 14 15 17 19 20 18 21 22 23 24 25 7 7 7 5 7 9 7 10 13 1 13 2 26 27 11 2x 12 1x 11 2x 16 28 29 30 31 31 31 32 10 34 35 Spare Part Document EPN 201010 ...

Page 264: ...2 RS1 SEG1 LED1 LED5 SEG2 LED3 YPR PCN11 YRS R88 R113 R87 R85 R84 R83 R82 R81 R86 C11 C10 R110 CN12 CN13 Y20L Y20B YE2 Y20A YA YE1 RSW2 RSW4 4 4 Y52CS PCN7 PCN2 Z3 PCN3A PCN3B Z2 8 7 CN10A DM7 C7 CN10B DM5 REG1 REG2 C1 C6 C5 DM8 C2 DM6 DM1 REG9 REG8 R2 R3 REG6 DSW4 4 3 2 1 5 3 DSW3 2 1 4 4 REG3 1 4 3 PSW1 2 1 4 3 2 2 PSW2 IC5 IC3 DSW1 DSW5 DSW2 REG4 3 C4 C20 REG7 R135 ZD9 R137 IC2 PC10 DSW6 Z5 1 L...

Page 265: ...6 5 4 1 8 1 3 3 2 1 2 1 SSW RSW3 3 3 2 2 6 5 4 LED2 RS1 SEG1 LED1 LED5 SEG2 LED3 YPR PCN11 YRS R88 R113 R87 R85 R84 R83 R82 R81 R86 C11 C10 R110 CN12 CN13 Y20L Y20B YE2 Y20A YA YE1 RSW2 RSW4 4 4 Y52CS PCN7 PCN2 Z3 PCN3A PCN3B Z2 8 7 CN10A DM7 C7 CN10B DM5 REG1 REG2 C1 C6 C5 DM8 C2 DM6 DM1 REG9 REG8 R2 R3 REG6 DSW4 4 3 2 1 5 3 DSW3 2 1 4 4 REG3 1 4 3 PSW1 2 1 4 3 2 2 PSW2 IC5 IC3 DSW1 DSW5 DSW2 REG...

Page 266: ...wiring 19 Pump insulation Only insulation around the pump 20 Union For security valve drain connec tion 21 Thermistor Assy THM G Gas 22 Thermistor Assy THM L Liquid 23 Thermistor Assy THM WI Water In 24 Thermistor Assy THM WO Water Out 25 Thermistor Assy THM WOHP Water Out PHEX 26 Pump Pipe Assy 1 27 Pump Pipe Assy 2 28 Drain pipe Vinyl tube diameter 16mm 1 meter length 29 P Spring For liquid THM ...

Page 267: ...0 11 1 1 RAS 2HVRN2 230 11 1 2 RAS 3HVRNME AF 237 11 1 3 RAS 4 6 H V RNME AF 248 11 1 4 RAS 8 10 HRNME AF 264 11 2 Indoor unit 280 11 2 1 Removing service cover 280 11 2 2 Replacing electrical components 281 11 2 3 Replacing hydraulic components 286 11 2 4 Replacing refrigerant parts 294 ...

Page 268: ...r dust entering into the cycle Be sure to replace parts immediately after removing Seal the refrigerant cycle when left unattached for a long period Remove pipe cover downward after removing one 1 screw No Part 1 Pipe cover Removing front cover Remove the pipe cover following Removing pipe cover see on page 258 Remove three 3 fixing screws and remove the upper co ver No Part 1 Upper cover To remov...

Page 269: ...over No Part 1 Electrical box cover Remove the fan motor connector CN24 inserted into the PCB in the electrical box Remove the fan motor lead wire fixed onto the motor clamp using a cord band Remove four 4 screws which fixes the motor No Part 1 Cord band 2 Fan motor lead wire 3 Four 4 screws 4 Fan motor N O TE To mount the motor be sure to place the lead wire outlet downward Fix the motor lead wir...

Page 270: ...tor Mount onto Terminal Cover with Metal Fitting 2 Yellow 3 White 4 Red 5 Terminal cover 6 M5 nut Remove the suction and discharge pipes from the compres sor Be sure to separate the blazing burner flame sufficiently from the wires and electrical components around the bra zed part in order to avoid burning No Part 1 Blazing discharge pipe 2 Blazing suction pipe Removing the compressor NO TE Do not ...

Page 271: ...ush nut 4 Vibration proof rubber 5 Two push nut 6 Three vibration proof rubber 7 Accumulator Removing high pressure switch and pressure switch for control Remove the pipe cover following Removing pipe cover see on page 395 Remove three 3 fixing screws and remove the upper co ver Remove the front cover following Removing front cover see on page 395 Collect the refrigerant from the check joint Disco...

Page 272: ...k Wait until the LED turns off Removing electronic expansion valve coil Remove the pipe cover following Removing pipe cover see on page 395 Remove three 3 fixing screws and remove the upper cover Remove the front cover following Removing front cover see on page 395 Remove the electrical box cover Remove the CN5A connector on the control PCB of the elec trical box Hold and disconnect the coil of th...

Page 273: ...o ver Disconnect all the wiring connected to the display PCB Hold the upper part of four 4 holders with long nose pliers and remove the display PCB No Part 1 Display PCB PWB2 2 Terminal cover 3 Long nose pliers 4 Display PCB 5 Holder 1 2 3 4 5 NO 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 NO TE To connect wi...

Page 274: ...he fixing screw and remove the reactor To mount components be sure to match the wiring connec tion with the mark band codes No Part 1 Electrical box cover 2 Partition plate 3 Fuse 4 Electrical box 5 Reactor 6 See the note 1 2 3 4 5 6 1 2 3 4 5 6 NO TE 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...

Page 275: ...verse To prevent contamination of the refrigerant with water or foreign particles do not expose open to at mosphere for long periods If necessary seal pipe ends using caps or tape Removing air outlet grille No Part 1 Air outlet grille 2 Shroud Remove the four 4 fixing screws Lift the air outlet grille holding the lower parts Release the extruded hook of the air outlet grille from the shroud Removi...

Page 276: ...unt the rubber bush at the partition plate when inserting the motor wire through it If not it may cause the disconnection to the fan motor s lead wire 1 2 1 3 Fan components and technical features Power supply 1 230V 50Hz DC fan motor DPI IPM PCN202 CN202 Screw for motor fixing M5 Screw with spacer x 4 Motor clamp and wiring fixing position No Part 1 Motor clamp 2 Fan motor lead wire 3 DC fan moto...

Page 277: ...e gas stop valve and the check joint at the piping Open the sound insulation cover wrapped around the com pressor and remove the terminal box cover at the compres sor fixed by one 1 screw Disconnect the compressor wires in the terminal box and remove the sound insulation cover Remove the rubber cap and the thermistor on the top of the compressor Remove the crankcase heater Oil heater on the lower ...

Page 278: ...charge pipes Remove the cap for the compressor just before replacing the compressor Before assembling the compressor seal the suction pipe and discharge pipe with tape to protect the compressor interior from foreign particles Remove the tape when connecting the pipes Match the terminal No with the mark band No when reassembling If the wiring is connected incorrectly the compressor may be damaged d...

Page 279: ...e compressor If the brazing material enters the compressor it will cause compressor failures Fixation of the compressor to the bottom plate Compressor position 1 2 3 4 Vibration proof rubber 1 Vibration proof rubber 2 Nut No Part 1 Nut and washer 2 Vibration Proof rubber 1 3 Vibration Proof rubber 2 Reassemble the parts in the reverse order of the indicated removing procedures Tighten the screws U...

Page 280: ...move the six 6 screws fixing the electrical box Open the P mounting plate by rotating it to the left No Part 1 2 Screws 2 P Mounting plate danger Check that the LED201 red located on the W surface PCB is OFF when opening the P mounting plate Do not touch the electrical components when LED201 Red located on the W surface PCB is ON in order to avoid an electrical shock 1 1 1 2 ...

Page 281: ...g valve coil 2 Screw 3 To PCN6 on PCB1 Removing expansion valve coil Remove the service cover according to the section Remo ving service cover in this chapter Open the P mounting plate according to the section Ope ning electrical box P Mounting Plate in this chapter danger Check that the LED201 red located on the W surface PCB is OFF when opening the P mounting plate Do not touch the electrical co...

Page 282: ...Remove the brazing of the reversing valve and the stop valve at the gas using a blowtorch Cool down the piping side covering it with wet cloth in order to avoid brazing material entering the reversing valve Protect the connecting wires and pipe insulation from the brazing frame Remove the reversing valves from its assemblies 4 brazed parts Perform the brazing with a blowtorchto remove and reas sem...

Page 283: ...cedures No Part 1 Expansion valve EV0 2 Brazing part Removing solenoid valve Remove the service cover and the rear service panel according to the sections Removing Service Cover and Removing lower part of service panel and rear panel described in this chapter Collect the refrigerant from the check joint according to the section Removing compressor in this chapter Remove the solenoid valve coil acc...

Page 284: ... D24 21 CP23 CP1 CP3 R58 R59 R7 4 IC5 5 8 R40 R39 C44 R53 CP13 JP7 26 R26 CP22 Q204 R29 R28 R46 R48 QP1 QN1 JP3 JP1 LED201 RD JP8 R27 F Lot No CP14 CP20 R111 C33 R1 JP2 CP19 QN2 R89 R112 R96 R3 R2 R67 R66 CP21 Q203 D15 J1 R65 Z1 C108 RY2 RY1 JP11 JP12 R116 R115 C112 JP6 JP4 JP5 R117 R118 C110 CB3 CB2 CB1 U V W PCN401 DCL2 DCL1 DM3 DM2 DM1 T S R CN1 CN4 CN207 CN206 CN204 CN203 CN202 RD CN201 WH PCN...

Page 285: ... components Remove the service cover according to the section Removing service cover in this chapter Open the P mounting plate by rotating it to the left according to the section Opening electrical box P Mounting Plate in this chapter Check to ensure the LED201 Red of the inverter PCB is off when opening P mounting plate Remove other electrical components according to the procedure below and the f...

Page 286: ...o not expose open to atmo sphere for long periods If necessary seal pipe ends using caps or tape Remove the four 4 fixing screws Slide the service cover downward and remove it Pay attention of not falling off the service cover No Part 1 Service cover 2 Screws Removing air outlet grille Remove the eight 8 fixing screws Lift the air outlet grille holding the lower parts Release the extruded hook of ...

Page 287: ...he upper cover according to section Removing upper cover in this chapter Note The length of fixing scews for the outdoor temperature thermistor is different than all other screws in the ma chine as an assembly poka yoke No Part 1 Rear panel 2 Screws 3 The lower part of service panel Removing upper cover Remove all the screws fixing the upper cover both on the front and back of the machine Lift the...

Page 288: ...the fan blade onto the motor shaft If the fan blade get stuck when trying to remove it use a puller to disassembly the fan No Part 1 Upper cover 2 Fan motor lead wire 3 Motor clamp 4 Fan motor 1 2 4 3 Fan components and technical features Power supply 1 230V 50Hz 3N 400V 50Hz Fan motor DC fan motor UP DIP IPM PCN202 CN202 DC fan motor DOWN DIP IPM PCN201 CN201 Screw for motor fixing DC Fan Motor U...

Page 289: ...e that the colors of the connectors on the PCN201 and PCN202 are matched with the wires Fix the air outlet grille firmly to the shroud Remove the fan motor connector from the PCN202 and PCN203 at the electrical box Cut off the cable tie that fixes the lead wire of the fan motor Remove the four 4 screws that fix the motor to the mo tor clamp Fix the motor wire with the cable tie or the cord clamp I...

Page 290: ...r fixed by one 1 screw Disconnect the compressor wires in the terminal box and remove the sound insulation cover Remove the rubber cap and the thermistor on the top of the compressor Remove the crankcase heater Oil heater on the lower case No Part 1 Upper cover 2 Rear panel 3 Check joint 4 Valve stay 5 Rear pipe cover 6 Lower part of service panel No Part 1 Sound proof cover 2 Cut part 3 Oil heate...

Page 291: ...e when connecting the pipes Match the terminal No with the mark band No when reassembling If the wiring is connected incorrectly the compressor may be damaged due to reverse rotation If there is a clearance between the oil heater and the compressor due to wire overlapping excessive heat is generated there Then the oil heater is failed due to overheating When mounting the reassembled oil heater thi...

Page 292: ... compressor If the brazing material enters the compressor it will cause compressor failures Fixation of the compressor to the bottom plate Compressor position 1 2 3 4 Vibration proof rubber 1 Vibration proof rubber 2 Nut No Part 1 Nut and washer 2 Vibration Proof rubber 1 3 Vibration Proof rubber 2 Reassemble the parts in the reverse order of the indicated removing procedures Tighten the screws U ...

Page 293: ...e refrigerant from the check joint according to the section Removing the compressor in this chapter Disconnect the fasten terminals from the pressure switches Cut the high pressure switch and control pressure switch from the brazing neck using a burner No Part 1 PCB 2 Upper cover 3 Rear cover No Part 1 Brazing 2 Discharge pipe No Part 1 Pressure switch for control 2 High pressure switch 2 3 1 2 1 ...

Page 294: ...he six 6 screws fixing the electrical box Open the P mounting plate by rotating it 90 degrees to the left No Part 1 2 Screws 2 P Mounting plate D A NGER Check that the LED201 red located on the W surface PCB is OFF when opening the P mounting plate Do not touch the electrical components when LED201 Red located on the W surface PCB is ON in order to avoid an electrical shock 1 1 1 2 ...

Page 295: ...en the LED201 Red located on surface W PCB is ON in order to avoid electrical shock Remove the connectors on the control PCB of the electrical box Remove the reversing valve coil by removing the screw fixing the coil No Part 1 PCB 2 Upper cover 3 Rear cover No Part 1 PCN7 SVA Solenoid valve 2 PCN6 RVR Reversing valve coil 2 3 1 1 2 RAS 4 6 HVRNME AF 1 2 RAS 4 6 HRNME AF Removing the coils for the ...

Page 296: ...s OFF when opening the P mounting plate Do not touch the electrical components when LED201 Red located on the W surface PCB is ON in order to avoid an electrical shock Remove the CN5A connector on the control PCB of the electrical box Hold the expansion valve coil and slightly rotate then pull it up Refer to the figure below to replace the electrical valve The lock mechanism is equipped with the e...

Page 297: ...d Remove the brazing of the reversing valve and the stop valve at the gas using a blowtorch Cool down the piping side covering it with wet cloth in order to avoid brazing material entering the reversing valve Protect the connecting wires and pipe insulation from the brazing frame Remove the reversing valves from its assemblies 4 brazed parts Perform the brazing with a blowtorchto remove and reas s...

Page 298: ...ro cedures No Part 1 Expansion valve EV0 2 Brazing part 1 2 Removing solenoid valve Remove the service cover and the rear service panel according to the sections Removing Service Cover and Removing lower part of service panel and rear panel described in this chapter Collect the refrigerant from the check joint according to the section Removing compressor in this chapter Remove the solenoid valve c...

Page 299: ... R27 F Lot No CP14 CP20 R111 C33 R1 JP2 CP19 QN2 R89 R112 R96 R3 R2 R67 R66 CP21 Q203 D15 J1 R65 Z1 C108 RY2 RY1 JP11 JP12 R116 R115 C112 JP6 JP4 JP5 R117 R118 C110 CB3 CB2 CB1 U V W PCN401 DCL2 DCL1 DM3 DM2 DM1 T S R CN1 CN4 CN207 CN206 CN204 CN203 CN202 RD CN201 WH PCN202 RD WH PCN201 ê ê 1 1 1 1 1 1 1 1 1 1 D5 R35 C17 D10 D9 2 NF CN2 Surface Surface W 0V 220V 240V CN6 CN2 THM7 THM9 THM8 EFS1 EF...

Page 300: ...ocated on the W surface PCB is ON in order to avoid an electrical shock Identify the terminal numbers with mark band When reassembling the terminals have to be connected to the correct numbers If incorrectly connected malfunctions or damages will occur In case of replacing control PCB set all the dip swit ches as the same position before replacing If not malfunction may occur Refer to the manual a...

Page 301: ... avoid an electrical shock Identify the terminal numbers with mark band When reassembling the terminals have to be connected to the correct numbers If incorrectly connected malfunctions or damages will occur note Disconnect all the wires connected with the smoothing capacitor CB CB1 CB2 CA The wire has polar characters Identify the wire mark band and the indication on the smoothing capacitor when ...

Page 302: ... caps or tape Remove the four 4 fixing screws Slide the service cover downward and remove it Pay attention of not falling off the service cover No Part 1 Service cover Removing air outlet grille Remove the eight 8 fixing screws Lift the air outlet grille holding the lower parts Release the extruded hook of the air outlet grille from the shroud No Part 1 Air outlet grille 2 Shroud Removing upper co...

Page 303: ...stor is different than all other screws in the ma chine as an assembly poka yoke Removing outdoor fan motor Remove the service cover according to the section Remo ving service cover in this chapter Remove the air outlet grille according to the section Remo ving air outlet grille in this chapter Remove the upper cover according to the section Remo ving upper cover in this chapter Disassembly the fa...

Page 304: ...or comp No DC fan motor PCB5 PCN203 CN201 AC fan motor PCB3 PCN404 White Screw for motor fixing DC Fan Motor M6 Screw with spacer x 4 AC Fan Motor M8 Screw x 4 Motor clamp and wiring fixing position No Part 1 Motor clamp 2 Fan motor lead wire 3 Cable tie 4 DC fan motor 5 AC fan motor 1 2 4 5 3 note When assembling the motor ensure the cables section directly downwards Fix the protection tube edge ...

Page 305: ... of service panel and rear panel In case that the outdoor unit is installed close to a wall closely sepparate first the outdoor unit from the wall Collect the refrigerant from the liquid stop valve the gas stop valve and the check joint at the piping Open the sound insulation cover wrapped around the compressor and remove the terminal box cover at the compressor fixed by one 1 screw Disconnect the...

Page 306: ...ore replacing the compressor Before assembling the compressor seal the suction pipe and discharge pipe with tape to protect the compressor interior from foreign particles Remove the tape when connecting the pipes Match the terminal No with the mark band No when reassembling If the wiring is connected incorrectly the compressor may be damaged due to reverse rotation If there is a clearance between ...

Page 307: ...e compressor If the brazing material enters the compressor it will cause compressor failures Fixation of the compressor to the bottom plate Compressor position 1 2 3 4 Vibration proof rubber 1 Vibration proof rubber 2 Nut No Part 1 Nut and washer 2 Vibration Proof rubber 1 3 Vibration Proof rubber 2 Reassemble the parts in the reverse order of the indicated removing procedures Tighten the screws U...

Page 308: ...ressure switch for control 63L 4 Electrical box 5 Brazing 6 Discharge pipe No Part 1 High pressure switch 63H1 2 Pressure switch for control 63H2 Opening electrical box P mounting plate Remove the service cover according to the section Remo ving the service cover in this chapter Remove the six 6 screws fixing the electrical box Open the P mounting plate by rotating it 90 degrees to the left No Par...

Page 309: ...P Mounting Plate in this chapter No Part 1 Upper cover 2 Rear cover 3 Electrical box No Part 1 SVA2 2 SVF 3 Reversing valve coil 4 SVA1 No Part 1 PCN7 SVA2 2 PCN6 RVR 3 PCN402 SVA1 SVF 1 2 3 3 1 2 3N 380 415V 50Hz 1 2 3 4 note Do not touch the electrical components when the LED201 Red located on W surface PCB is ON in order to avoid electrical shock Remove the connectors on the control PCB of the ...

Page 310: ... OFF when opening the P mounting plate Do not touch the electrical components when LED201 Red located on the W surface PCB is ON in order to avoid an electrical shock Remove the CN5A connector on the control PCB of the electrical box Hold the expansion valve coil and slightly rotate then pull it up Refer to the figure below to replace the electrical valve The lock mechanism is equipped with the ex...

Page 311: ...d Remove the brazing of the reversing valve and the stop valve at the gas using a blowtorch Cool down the piping side covering it with wet cloth in order to avoid brazing material entering the reversing valve Protect the connecting wires and pipe insulation from the brazing frame Remove the reversing valves from its assemblies 4 brazed parts Perform the brazing with a blowtorchto remove and reas s...

Page 312: ...the section Removing Compressor Remove the coils according to the section Removing Elec tronic Expansion Valve Coil Remove the brazing as shown in the figure below Electronic Expansion Valve EV0 2 brazing parts Perform the brazing to remove and reassemble the electro nic expansion valve by cooling with wet cloth Protect the connecting wires and pipe insulation from bra zing flame Reassemble the pa...

Page 313: ...ow Using a blowtorch and previously cooling the pipe side with wet cloth in order to avoid brazing material entering the reversing valve Solenoid Valve SVA1 2 brazing parts Solenoid Valve SVA2 2 brazing parts Solenoid Valve SVF 2 brazing coils Perform the brazing to remove and reassemble the solenoid valve Protect the connecting wires and pipe insulation from the brazing flame Remove the flare nut...

Page 314: ...4 Terminal board 5 PCB5 Removing the relay PCB Remove the service cover according to the section Removing Service Cover in this chapter Disconnect all the wires connected to the relay PCB No Part 1 Holder 4 pcs 2 PCB 1 for control note Do NOT touch the electrical components of the PCB Do NOT apply strong force to the electrical compo nents and PCBs to avoid failure Removing electrical components d...

Page 315: ...iode module DM on heat radiation fin slightly apply the heat conducting silicon grease Manufacture Shin Etsu Chemical Co Ltd Product No G 746 over the fin contact surface Identify the terminal numbers with mark band When reassembling the terminals have to be connected to the correct numbers If incorrectly connected malfunctions or damages will occur Correctly insert two wires of U and V phases for...

Page 316: ...istor module Remove the three 4 screws fixing the PCB2 and then remove the PCB2 from the transistor module Remove the four 4 fixing screws on the transistor module Remove the transistor module from the electrical box No Part 1 Screw M5 2 Screws for PCB2 M3 3 Fixing screws for transistor module M4 note The correct position of the marks on the PCB2 is upside down when being assembled Identify the te...

Page 317: ...ing service cover in this chapter note Disconnect all the wires connected with the smoothing capacitor CB CB1 CB2 CA The wire has polar characters Identify the wire mark band and the indication on the smoothing capacitor when wire connecting Remove the two 2 screws fixing the smoothing capacitor and remove the smoothing capacitor Disconnect all the wires connecting with the magnetic contactor CMC1...

Page 318: ...ured When performing brazing work besides security gloves it is a must to wear convenient eye protection 11 2 1 Removing service cover 1 First open the user s interface service cover 2 Unscrew the two screws with the nylon washers bet ween the screw and the cover 3 Slide the service cover upward and remove it turning it from your left side C A UTION Take care do not damage the LCD when removing th...

Page 319: ...rmers TR1 TR2 Current transformer 4 Electrical heater contactors AR1 2 3 Heater contactors for the control step and cut off system 5 Pump contactor 52P Water pump contactor 6 Noise filters NK1 9 Noise filter for PCB current peak protection 7 Electrical heater fuses EF1 2 3 Fuses for electrical heater protection 8 Water pump fuse EF4 Fuse for water pump protection 9 Terminal Board 1 TB1 Terminal bo...

Page 320: ...3 Refrigerant liquid sensor THML CN11 Refrigerant gas sensor THMG CN12 Step 2d Expansion valve and LCD Controller Expansion valve wires CN7A 1 LCD Controller wire CN1 of LCD Controller 2 note 1 8 10HP Disconnect CN402 CN403 from PCB3 2 Check Replace LCD controller instruction Step 3 After disconnecting all internal devices from the electrical box remove electrical box as shown Step 3a Remove fixed...

Page 321: ...onents properly from the PCB see the Electrical wiring diagram chapter of this ma nual Cover the thermistors with the cork tape or pipe insu lation according to each location Both materials are factory supplied Replace them if damaged during the servicing 1 Remove service cover 2 Remove the electrical box cover 3 Disconnect these components properly from the con nector of PCB 2 THMWO CN13 THMWOHP ...

Page 322: ...pipe THMG THML THM Vinyl must be covered with Butyl sheet 8 Install thermistor wire by perform the process in reverse Replacing LCD controller note To disconnect this component properly from the Electrical Box see the Electrical wiring diagram chapter of this manual CAUTION Pay attention do not touch the micro and other components on LCD controller PCB This is malfunction pro tection by static ele...

Page 323: ...e x2 nuts M3 by using box spanner 5 Install the Surface thermostat by using thermic paste on the contact surface note Be sure that the contact surface of the new thermostat is completely joined with the heater surface 6 Tighten the nuts with box spanner 7 Cover the surface thermostat with the insulation remove in point 2 8 Connect again the faston connections in to a new sur face thermostat and co...

Page 324: ... valves Replace water flow switch WFS note To disconnect this component properly from the Electrical box see the Electrical wiring diagram chapter of this manual 1 Remove service cover 2 Remove the electrical box cover 3 Disconnect the water flow switch WTS from electrical box by disconnect CN25 connector 4 Unscrew the flow switch nut 5 Install the new one by performing the procedures above in rev...

Page 325: ...r 2 Disconnect the low water pressure switch LWPS by pu lling upwards the faston connections 3 Unscrew the low water pressure switch LWPS 4 Install the new one by performing the procedures above in reverse way note Be sure the faston connections of low water pressu re switch LWPS Connect low water pressure wires into 1 2 sockets Cover free socked by using an empty faston Apply Teflon to the thread...

Page 326: ...t fixing the water pump 4 Install the new one by performing the procedures above in reverse way note Be sure of the position of the water pump Be careful do not lose the gaskets of the water pump Check the gaskets If it is defective replace by a new ones Remember to put pump insulation before pump ins tallation Replace manometer 1 Remove service cover 2 Open electrical box unscrews fixing nuts and...

Page 327: ...rough the hole of the LCD con troller support 6 Install the new one by performing the procedures above in reverse way note Be sure of the position of the manometer Apply teflon to the thread of union before assembling Replace safety valve 1 Remove service cover 2 Remove clamp that are attached with safety valve and drain pipe 3 Unscrew safety valve from the top of Electrical heater ...

Page 328: ... of the safety valve Apply teflon to the thread of unions before assem bling Union pipe Safety valve Final location of the draining hole must be into the indicated angle area 90º Safety valve union Clamp Drain pipe Replace air purger 1 Remove service cover 2 Disconnect drain hose of the air purger as shown in the drawing 3 Unscrew air purger from the top of the electrical heater ...

Page 329: ...door unit devices 1 Electrical Heater power connection Disconnect AR2 2 wire Disconnect AR3 2 wire Disconnect AR3 4 wire Disconnect TB1 N wire 3b Indoor unit devices 2 Electrical heater thermal fuse wire CN23 Electrical heater surface thermostat wire THe from the faston connections 4 Turn electrical box and removes all cables from the pac king glands 5 Unscrew the two water piping nuts connect to ...

Page 330: ...e the gaskets of the water pump Check the gaskets if it is defective replace by a new ones After assembling electrical heater check that the electrical heater is completely filled with water by operating pressure of safety valve Replace water strainer In case of maintenance cleaning or replacing mesh The water strainer should be clear or replaced as appropria te for system condition 1 Remove servi...

Page 331: ...service cover 2 Remover electrical box cover 3 Turn electrical box by removing screws 4 Closes shut down valves and open the drain valves Drain water from the bottom side of the expansion vessel by unscrewing the lower place 5 Unscrew the copper pipe connected to the pressure gage from expansion vessel 6 Unscrew 3 nuts on the bottom for the expansion ves sel note Be sure that the expansion vessel ...

Page 332: ...r to avoid mixing the water and foreign particles into the refrigerant cycle After removing refrigerant parts replace it quickly If exposed for a long period seal the liquid pipe and gas pipe Replace expansion valve 1 Remove service cover 2 Remove the CN26 connector on the expansion valve control 3 The butyl sheet is adhered around the piping of the heat exchanger the electronic expansion valve an...

Page 333: ...oes not affect the open close function of the valve Therefore the adjustment of the direction of the motor part is not required if the position of the motor is moved toward the rotating direction after the replacement as shown in the figure However make sure that the direc tion of the motor for the coil of the electronic expansion valve does not touch other piping and the side plate of the electri...

Page 334: ...ermistors 12 Remove refrigerant gas thermistor THMG from pipe by perform procedure Replace thermistors 13 Remove water inlet thermistor THMWI from pipe by per form procedure Replace thermistors 14 Remove water outlet plate heat exchanger thermistor THMWOHP from pipe by perform procedure Replace thermistors 15 Disconnect expansion valve connection CN26 16 Unscrew the water piping nut connect to the...

Page 335: ...l box cover 3 Turn electrical box by removing screws 4 Remove manometer by perform procedure Replace ma nometer 5 Remove LCD controller by perform procedure Replace LCD controller 6 Remove LCD control control support by unscrew nuts 7 Remove Refrigerant liquid thermistor THML from pipe by perform procedure Replace thermistors 8 Remove brazing from the four places refrigerant side and water side 9 ...

Page 336: ......

Page 337: ... ing Index 12 1 Troubleshooting procedure 300 12 1 1 Alarm code 300 12 1 2 Troubleshooting by alarm code 303 12 1 3 Troubleshooting in check mode 370 12 1 4 Troubleshooting using the 7 segment display outdoor unit 371 12 1 5 Procedure of checking other main parts 377 ...

Page 338: ... connector 12 Indoor Water outlet thermistor abnormality Loose disconnected broken or short circuited connector 13 Indoor Indoor liquid pipe temperature thermistor abnor mality Loose disconnected broken or short circuited connector 14 Indoor Indoor gas pipe temperature thermistor abnor mality Loose disconnected broken or short circuited connector 15 Indoor Water outlet C2 thermistor abnormality Lo...

Page 339: ...broken 59 Outdoor Inverter fin temperature thermistor abnormality Loose disconnected broken or short circuited connector b1 Outdoor Error in address refrigerant system setting Address refrigerant system setting over 64 EE Outdoor Compressor factor alarm Alarm to notify damage to compressor occurs 3 times within 6 hours 70 P 70 Indoor Hydraulic alarm Water pressure or water flow is not detected in ...

Page 340: ...ut ON 13 Discharge pressure increase prevention for cooling and heating ON Discharge pressure increase prevention for cooling and heating by control of former refrigerant piping ON 15 Gas shortage detection detected by pipe temperature gas shortage detection I OFF Gas shortage detection detected by compressor top temperature gas shortage detection II OFF Compressor top overheating OFF 16 Abnormal ...

Page 341: ...ing compressor running Does CMC1 turn ON for more than 3 seconds Is the protective device still ope rating Is the CMC1 coil broken Does CMC1 ON when starting Is the voltage 240V or 220V exis ting at the 1 to 3 of PCN9 during Y52C is ON Is the pro tective device still operating Faulty PCB1 No No No Yes Yes Faulty PCB1 Yes Faulty CMC1 Normal PCB1 Yes No No Yes Yes Yes Check activation of the followi...

Page 342: ...eating Replace the fan motor if faulty Malfunction of the expansion valve Disconnected of the connector Fix the looseness or reconnect the connector Fully closed and locked Replace the expansion valve Excessively high temperature air to the indoor unit Calculate the heat load Reduce the heat load or use a bigger unit Check for hot air near the ceiling heating Provide good circulation Check for sho...

Page 343: ...k the attaching state of the discharge gas thermistor Reattach the thermistor Faulty gas bypass solenoid valve Check for clogging Replace the gas bypass so lenoid valve Overcharged refrigerant Check the cycle operation temp Charge the refrigerant correctly Mixture of the non condensa te gas in the refrigerant cycle Check the air temperature and the pressure Recharge the refrigerant after the vacuu...

Page 344: ...e outdoor unit PCB This alarm is displayed when an abnormal operation is maintained for three minutes after the normal transmis sion 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 main tained for 30 seconds from the starting of the outdoor ...

Page 345: ...once in 10 seconds Is PCB1 setting non pole operating Is LED3 on PCB1 ON Is LED 3 yellow on PCB1 flickering more than once in 10 seconds Does the refrige ration system setting between DSW4 RSW1 on PCB1 and DSW5 RSW2 on PCB1 match Is LED3 yellow ON even if CN2 of PCB1 is removed Is the voltage between the termi nal 1 and 3 of PCB1 220V or 240V 2 Is connector PCN2 CN1 for the transformer loosened Is...

Page 346: ...move the short circuit and replace the fuse Faulty solenoid coil for the magne tic switch for the comp motor Measure the resistance of coil Replace the magnetic switch and the fuse Failure of the outdoor unit fan motor Measure the resistance between the wires and the insulation resistance Replace the outdoor unit fan motor and fuse Faulty transformer Measure input voltage PCB1 output voltage 1 Rep...

Page 347: ...n the abnormal operation is maintained for 30 seconds after the normal transmission between the outdoor unit PCB1 and IPM Also the 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 starting of the outdoor unit In case fuse blown replace electrical box LED2 is ON...

Page 348: ...ained 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 is main tained for 30 seconds from the starting of the outdoor unit Replace fuse if blown LED2 is ON or OFF Faulty PCB2 or faulty DC fan motor...

Page 349: ...ined 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 starting of the outdoor unit Replace fuse if blown No Faulty PCB1 Disconnect CN6 of PCB1 Reconnect CN6 of PCB1 PCB2 is normal Check the wiring again Disconnecting or insufficient contact of the wiring between PCB2 and PCB1 Faulty PCB2 Fault...

Page 350: ... Replacing wires repairing tightening screws and incorrect wiring Power source wiring for the outdo or unit Faulty PCB PCB1 for the control PCB2 for the inverter Disconnected wires to PCB Check the connections Repair the wiring connections Faulty PCB Replace PCB if faulty Incorrect wiring Disconnected wires insufficient contacting Check the continuity Check for looseness of connection screws Repla...

Page 351: ...rse 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 connected RAS 2 6 HVRN2 HVRNME AF RAS 4 10 HRNME AF Voltage for unit to be suspended Running voltage 207 to 253V Setting voltage Less than 187V Voltage for unit to be suspended...

Page 352: ...umber of occurrences is smaller than two the retry operation is performed The alarm code 06 Means fan controller Abnormal Operation No Check the wiring and the cable capacity Frequency can increa se higher than 60 Hz Restart the operation Faulty PCB1 Replace electrical box Connect correctly Yes Yes No Yes No Yes Compressor stops immediately lower than 20 Hz Compressor stops when frequency increa s...

Page 353: ...1 2 2 In case the wiring is co rrect replace Dip IPM Check capacitors CB1 2 Faulty Dip IPM Replace it Replace the capacitors Connect correctly Yes Yes No Yes No Yes Compressor stops immediately lower than 20 Hz Compressor stops when frequency increases Approx 20 Hz to 60 Hz Faulty Dip IPM Replace it No No Yes Yes No Normal Faulty Be extremely carefull because of the high voltage Capacitors have hi...

Page 354: ...e ISPM Check capacitors CB1 2 Faulty ISPM Replace ISPM Replace the capacitors Connect correctly Yes Yes No Yes No Yes Compressor stops immediately lower than 30 Hz Compressor stops when frequency increa ses Approx 30 Hz to 60 Hz Faulty ISPM Replace ISPM No No Yes Yes No Normal Faulty Be extremely carefull because of the high voltage Capacitors have high voltage Be extremely carefull 1 Is the power...

Page 355: ...lace it Replace the capacitors Connect correctly Yes Yes No Yes No Yes Compressor stops immediately lower than 20 Hz Compressor stops when frequency increa ses Approx 20 Hz to 60 Hz Faulty PCB2 Replace it No No Yes Yes No Normal Faulty Be extremely carefull because of the high voltage Capacitors have high voltage Be extremely carefull 1 Is the power supply voltage 380V 10 or 415V 10 Is the voltage...

Page 356: ...stor installed correctly on the compressor Heating operation Is it at cooling or heating mode when the alarm has occurred Cooling Cooling operation Yes Yes Check the I U expansion valve opening and the temperature on the top of the compressor by the outdoor unit PCB I U expansion valve opening 300pls Yes Is the temperature on the top of compressor less than esti mated condensation temp Check the O...

Page 357: ...Valve Check expansion val ve Refer to Checking procedure for the elec tronic expansion valve Replace expansion valve if faulty Faulty PCB Fault Replace PCB and check operation Replace PCB if faulty Disconnected wires for expan sion valve control Check connections Repair wiring connections Faulty discharge gas thermistor Fault Measure resistance Replace thermistor if faulty Incorrect mounting Check...

Page 358: ... Tdh1 or above for 10 minutes or at Tdh2 or above for 5 seconds Tdc Discharge gas temperature of the thermistor on the top of the compressor for cooling operation Tdh Discharge gas temperature of the thermistor on the top of the compressor for heating operation Outdoor capacity Tdc1 Tdc2 Tdh1 Tdh2 RAS 2HVRN2 and RAS 3HVRNME AF 115 125 115 125 RAS 4 6 HRNME AF 127 140 120 140 No Faulty thermistor Y...

Page 359: ... thermistor Change it Is resistance of THMwi between 0 24kΩ and 18 2kΩ Are the connectors between PCB1 and PCB2 connected correctly PCB1 CN9 CN1 CN5 CN2 CN6 CN3 CN2 CN4 PCB2 Yes Is the temperature of THMwi between 100ºC and 80ºC Faulty PCB1 or PCB2 Check PCBs No Wiring check repair breaking of wire wrong wiring No Check correct position of THMwi and correct it Yes Thermistor characteristics Thermi...

Page 360: ...thermistor Change it Is resistance of THMwo between 0 24kΩ and 18 2kΩ Are the connectors between PCB1 and PCB2 connected correctly PCB1 CN9 CN1 CN5 CN2 CN6 CN3 CN2 CN4 PCB2 Yes Is the temperature of THMwo between 100ºC and 80ºC Faulty PCB1 or PCB2 Check PCBs No Wiring check repair breaking of wire wrong wiring No Check correct position of THMwo and correct it Yes Thermistor characteristics Thermis...

Page 361: ... it Is resistance of THML between 0 24 kΩ and 840 kΩ Are the connectors between PCB1 and PCB2 connected correctly PCB1 CN9 CN1 CN5 CN2 CN6 CN3 CN2 CN4 PCB2 Yes Is the temperature of THML between 100ºC and 80ºC Faulty PCB1 or PCB2 Check PCBs No Wiring check repair breaking of wire wrong wiring No Check correct position of THML and correct it Yes Measuring the thermistor resistance value Thermistor ...

Page 362: ...t Is resistance of THMG between 0 24kΩ and 840kΩ Are the connectors between PCB1 and PCB2 connected correctly PCB1 CN9 CN1 CN5 CN2 CN6 CN3 CN2 CN4 PCB2 Yes Is the temperature of THMG between 100ºC and 80ºC Faulty PCB1 or PCB2 Check PCBs No Wiring check repair breaking of wire wrong wiring No Check correct position of THMG and correct it Yes Measuring the thermistor resistance value Thermistor char...

Page 363: ...Yes Yes No Is THMwo2 connected to intake terminals 30 31 of TB2 Faulty thermistor Change it Is resistance of THMwo2 between 0 24kΩ and 18 2kΩ Are the connectors between PCB1 and PCB2 connected correctly PCB1 CN9 CN1 CN5 CN2 CN6 CN3 CN2 CN4 PCB2 Yes Is the temperature of THMwo2 between 100ºC and 80ºC Faulty PCB1 or PCB2 Check PCBs No Wiring check repair breaking of wire wrong wiring No Check correc...

Page 364: ...o intake terminals 27 28 of TB2 Faulty thermistor Change it Is resistance of THMdhwt between 1 11kΩ and 220 6kΩ Are the connectors between PCB1 and PCB2 connected correctly PCB1 CN9 CN1 CN5 CN2 CN6 CN3 CN2 CN4 PCB2 Yes Is the temperature of THMdhwt between 100ºC and 20ºC Faulty PCB1 or PCB2 Check PCBs No Wiring check repair breaking of wire wrong wiring No Check correct position of THMdhwt and cor...

Page 365: ...46034 29 0 16624 50 0 6718 71 0 2989 92 0 1443 12 0 137262 9 0 43733 30 0 15884 51 0 6450 72 0 2882 93 0 1396 11 0 129583 10 0 41560 31 0 15180 52 0 6195 73 0 2779 94 0 1351 10 0 122380 11 0 39500 32 0 14511 53 0 5951 74 0 2681 95 0 1308 9 0 115575 12 0 37553 33 0 13875 54 0 5718 75 0 2587 96 0 1266 8 0 109189 13 0 35714 34 0 13270 55 0 5495 76 0 2496 97 0 1226 7 0 103194 14 0 33975 35 0 12695 56 ...

Page 366: ...take terminals 34 35 of TB2 Faulty device Change ATW SPS 01 Is the current of ATW SPS 01 output between 4 20 mA Is the temperatu re of THMswp bet ween 50ºC and 30ºC Faulty PCB1 No Check correct position of THMswp and correct it Yes Is resistance inside ATW SPS 01 between 92 16kΩ and 119 40kΩ No Yes ATW SPS 01 TB2 34 TB2 35 TB2 Repair harness Faulty device Change ATW SPS 01 Check Harness connection...

Page 367: ...9 78 120 17 120 55 120 94 121 32 121 71 122 09 122 47 122 86 50 60 123 24 123 63 124 01 124 39 124 78 125 16 125 54 125 93 126 31 126 69 60 70 127 08 127 46 127 84 128 22 128 61 128 99 129 37 129 75 130 13 130 52 70 80 130 90 131 28 131 66 132 04 132 42 132 80 133 18 133 57 133 95 134 33 80 90 134 71 135 09 135 47 135 85 136 23 136 61 136 99 137 37 137 75 138 13 90 100 138 51 138 88 139 26 139 64 ...

Page 368: ... to intake terminals 29 29 of TB2 Faulty thermistor Change it Is resistance of THMwo3 between 0 24kΩ and 18 2kΩ Are the connectors between PCB1 and PCB2 connected correctly PCB1 CN9 CN1 CN5 CN2 CN6 CN3 CN2 CN4 PCB2 Yes Is the temperature of THMwo3 between 100ºC and 80ºC Faulty PCB1 or PCB2 Check PCBs No Wiring check repair breaking of wire wrong wiring No Check correct position of THMwo3 and corre...

Page 369: ... TB2 Faulty thermistor Change it Is resistance of THMwohp between 0 24kΩ and 18 2kΩ Are the connectors between PCB1 and PCB2 connected correctly PCB1 CN9 CN1 CN5 CN2 CN6 CN3 CN2 CN4 PCB2 Yes Is the temperature of THMwohp between 100ºC and 80ºC Faulty PCB1 or PCB2 Check PCBs No Wiring check repair breaking of wire wrong wiring No Check correct position of THMwohp and correct it Yes Thermistor chara...

Page 370: ...cut greater than 6 MΩ during the cooling or heating operation No Connect it Yes Is the thermistor connected to THM9 of PCB Faulty thermistor Faulty PCB Is the resistande of THM9 between 1kΩ and 6kΩ No Yes Compressor top thermistor THM9 Thermistor on Top of compressor Phenomenon Cause Check item Action Turn OFF the main switch Faulty top of compressor thermistor Fault Check resistance Replace therm...

Page 371: ... connected to intake terminals 32 33 of TB2 Faulty device Change ATW 2OS 01 Is the current of ATW 2OS 01 output between 4 20 mA Is the temperature of THMamb2 between 50ºC and 30ºC Faulty PCB1 No Check correct position of THMamb2 and correct it Yes Is resistance inside ATW 2OS 01 between 92 16kΩ and 119 40kΩ No Yes ATW 2OS 01 TB2 32 TB2 33 TB2 Repair harness Faulty device Change ATW 2OS 01 Check Ha...

Page 372: ... 78 120 17 120 55 120 94 121 32 121 71 122 09 122 47 122 86 50 60 123 24 123 63 124 01 124 39 124 78 125 16 125 54 125 93 126 31 126 69 60 70 127 08 127 46 127 84 128 22 128 61 128 99 129 37 129 75 130 13 130 52 70 80 130 90 131 28 131 66 132 04 132 42 132 80 133 18 133 57 133 95 134 33 80 90 134 71 135 09 135 47 135 85 136 23 136 61 136 99 137 37 137 75 138 13 90 100 138 51 138 88 139 26 139 64 1...

Page 373: ...case that the thermistor is abnormal during the operation the operation continues based on the assumption that the outdoor temperature is 35 C cooling 6 C heating Is the thermistor THM7 TA connected to PCB1 Connect it No Yes Is the resistance of THM7 between 0 24 kΩ and 500 kΩ Faulty thermistor No Yes Faulty PCB1 Outdoor temperature thermistor 90 80 70 60 50 40 30 20 10 0 15 10 5 0 5 10 15 20 25 3...

Page 374: ...er as shown in the figure below If this thermistor is faulty such as short circuit less than 0 2kΩ or cut more than 840kΩ during eight minutes continuously this alarm is displayed The position is indicated below Is the thermistor THM8 Te connected to PCB1 Connect it No Yes Is the resistance of THM7 between 0 2 kΩ and 500 kΩ Faulty thermistor No Yes Faulty PCB1 Thermistor Evaporating temperature fo...

Page 375: ...n the outdoor unit PCB1 set correctly Set the capacity for PCB1 No Yes Is DSW3 on the outdoor unit PCB set correctly Set the capacity for PCB No Yes Total capacity of the indoor unit s is wrong Phenomenon Cause Check item Action Turn OFF the main switch Incorrect capacity setting of indoor unit Check combination of indoor units and capa city setting on PCB Correctly set dip switch DSW3 Incorrect c...

Page 376: ...re displayed on the display of the outdoor unit PCB This alarm code is indicated 3 minutes after power is supplied to the outdoor unit when the indoor unit no con nected to the outdoor unit is duplicated by setting of RSW NO TES In case of H LINK system this alarm code is indicated when the refrigerant system setting on the outdoor unit PCB and the indoor unit PCB are incorrectly set In this case ...

Page 377: ...the remote control switch Place the tester as shown in the 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 DC 12V detected Check wiring other than on DIP IPM 1 Yes Faulty DIP IPM Replace E box Voltage detected DIP IPM is normal No Place of tester to Pin 1 of PCN40...

Page 378: ...it number and the alarm code are displayed on the display of the outdoor unit PCB This alarm code is indicated when AC 220V or 240V is supplied to voltage PCN9 1 and 3 on PCB1 in the outdoor unit during CMC is opened Is 220VAC or 240VAC applied PCN9 1 and 3 during stoppage Faulty PCB1 No Check wiring connection except PCB1 Yes PCB is normal N14 CN15 PCN10 PCN13 PCN8 PCN9 SEG1 Y52C Y20A Y21 YCH DSW...

Page 379: ...ing Yes RY1 turns ON at operation startup Compressor operates Voltage bet ween pins 1 and 3 of DIP IPM connector PCN401 approx 0V at ope ration startup Protec tion device remains activa ted No No Does RY1 remains ON for more than three seconds Yes Faulty DIP IPM Yes Check the temperature of the following places with the remote control switch in checking mode Check the temperature of 1 compressor t...

Page 380: ... degree and top of compressor temperature higher than 95 degree No Faulty PCB1 Yes Is CMC ON Is the voltage bet ween PCN9 1 and 3 220V 240V Is protection device activated No No Is CMC ON 3 seconds Yes Faulty PCB1 Yes Check the temperature of the following places with the remote control switch in checking mode Check the temperature of 1 compressor top temperature and 2 outdoor unit evaporation pipi...

Page 381: ...pair connections Overcharged refrigerant Check cycle operating temperature Charge refrigerant correctly Mixture of non condensable gas in refrigerant cycle Check ambient tempe rature 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 wirin...

Page 382: ...ssor top tempe rature higher than 95 C Yes Detected Approx 15 V No Check DIP IPM connector wiring Yes RY1 turns ON at operation startup Compressor operates Voltage bet ween pins 1 and 3 of DIP IPM connector PCN401 approx 0V at ope ration startup Protec tion device remains activa ted No No Does RY1 remains ON for more than three seconds Yes Faulty DIP IPM Yes Check the temperature of the following ...

Page 383: ...on Indoor unit liquid refri gerant piping temperature higher than 55 ºC and top of compressor temperature higher than 95 ºC No Faulty PCB1 Yes Is CMC ON Is the voltage bet ween PCN9 1 and 3 220V 240V Is protection device activated No No Is CMC ON more than 3 seconds Yes Faulty PCB1 Yes Check the temperature of the following places with the remote control switch in checking mode Check the temperatu...

Page 384: ...r control Check activated pressure and connecting wire Replace it if pressure switch for control is faulty Overcharged refrigerant Check cycle operating temperature Charge refrigerant correctly Mixture of non condensable gas in refrigerant cycle Check ambient tempe rature and pressure Recharge refrigerant after vacuum pumping Clogging of discharge piping Check for clogging Remove clogging Faulty o...

Page 385: ...Cooling liquid refrigerant piping temperature of indoor unit hea ting evaporating temperature of outdoor unit is lower than 37 ºC 250 350 kΩ and the thermistor on top of compressor is higher than 90 ºC for 3 minutes retry operation is performed 3 minutes after compressor stoppage However when the state occurs more than 3 times including 3 in one hour this alarm code is indicated No Connect it Yes ...

Page 386: ...en before operation Check stop valve Fully open stop valve 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 Refrigerant leakage Check each temperatu re...

Page 387: ...any time Is the compressor running current as same as rated current Yes Yes Yes Check the capacity and wiring of the power source Check the power source capacity Replace the electrical box Yes Yes it tips Yes Is cranck case heater ON Restart operation after main switch ON No Is refrigerant overcharged Charge refrigerant correctly Yes Yes Is expansion valve of I U locked in cooling operation Is exp...

Page 388: ...he power supply voltage 187V during operation Is it 170V single phase or 340V 3 phases or more during operation when other devices are operating Is the compressor running current the same as rated current Yes Yes Yes Check the capacity and wiring of the power source Check the power source capacity Replace the PCB2 IPM or dipIPM 1 Yes Yes it tips Yes Is current applying to crank case heater Restart...

Page 389: ...30 minutes Retry ope ration is performed up to the occurrence of 2 times Condition of activation When the frequency of compressor is maintained at 6 to 10Hz 3HP after compressor is started one of the absolute value of running current at each phase is less than 1 5A including 1 5A Yes No Restart the operation How is compressor ope ration when restarted Compressor stops immediately nearly 18Hz Compr...

Page 390: ...is maintained at 15 to 18Hz after compressor is started one of the abso lute value of running current at each phase is less than 1 5A including 1 5A Yes No Restart the operation How is the compressor operation when you restart the compressor Compressor stops immedia tely nearly 18Hz Compressor does not operate P7 is displayed 1 Faulty PCB2 Replace PCB2 2 Power wiring of the comp is not through CT ...

Page 391: ... PCB or DIP IPM 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 inverter PCB or DIP IPM such as short circuited grounded overcurrent or control voltage decrease Check the compressor If there is a short circuit between phase lines or groun ded from any phase replace the compressor No T...

Page 392: ...eplace the compressor No Turn off power disconnect U V W from compressor terminals and restart Does the protecting function activate 3 Replace IPM or Dip IPM Faulty Good Replace IPM and PCB2 Faulty Is the silicon grease coated all over between the IPM or Dip IPM and the radiated fin No Coat the silicon grease to all the touched face between the IPM and the radiated fin fully 4 Good Is the heat exc...

Page 393: ...he ISPM such as short circuited grounded overcurrent or control voltage decrease Yes Check the transistor module 1 Check the compressor If there is a short circuit bet ween phase lines replace the compressor No Turn off power disconnect U V W from compressor terminals and restart Does the protecting function activate 2 Replace the transistor module Faulty Replace IPM and PCB2 Is the fixed screw on...

Page 394: ...tion is performed twice Conditions When the temperature of the thermistor for inverter fin excess 100 ºC RAS 3 6 HVRNME AF 80 ºC RAS 4 10 HRNME AF 3 times in 30 minutes this alarm is indicated and the operation is stopped In the case the occurrence is smaller than 2 times retry is performed No Replace the dipIPM ISPM IPM 1 No Replace the thermistor Remove the clogging Is the heat exchanger of the ...

Page 395: ...t number and the alarm code are displayed on the display of the outdoor unit PCB In case that the abnormality of alarm code 55 occurs four times within 30 minutes the alarm code of abnormality occurred for the fourth time is indicated Retry operation is performed up to third time of abnormality occurrence Conditions When the transmitting abnormality occurs between dipIPM or IPM and PCB2 this alarm...

Page 396: ...in 5 minutes RAS 2HVRN2 or 10 times within 30 minutes RAS 3 10 H V RNME AF after the first detection Check fuse EF4 Check for correct wiring Yes Does the motor run Removed the foreign matter Restart operation No This is normal No Restart operation Faulty Connect it correctly Good Alarm code is not indicated No Yes No Replace the fan motor Does the fan stop by the foreign matter Yes Yes Alarm code ...

Page 397: ...y 02 Tripping of protection device in outdoor unit 07 Decrease in discharge gas superheat 08 Increase in discharge gas temperature 41 Cooling overload 42 Heating overload 47 Low pressure decrease protection activating N O TE You can check these alarms using the check mode 1 Follow the action that is indicated in each alarm chart You can clear these alarms only by turning OFF the main switch to the...

Page 398: ...water pressure Yes 1 bar Charge water Check to make sure there is sufficient water flow 1 5 bar P70 protection See Unit installation chapter See Water pump configuration chapter Make sure there is no air in the system Check to make sure the expansion vessel is not broken No P70 protection Check continuity in water flow switch when water pump is ON No Faulty water flow switch Replace it Check conti...

Page 399: ...on the seven segments of the indoor unit PCB This alarm code is displayed when pump1 operation feedback signal is OFF while pump interlock is ON No Check the Pump Lock Yes Is the voltage between connector PCN4 1 and PCN4 3 on PCB1 at 220 240V Check PCB1 Is thermal relay for pump1 52P activated No Yes Check thermal relay for pump Check wiring aroung pump1 and thermal relay for pump ...

Page 400: ...set button Is the electri cal heater thermostat THe open Check the reset button on the thermal protector If button is ON a pre set and there is continuity between terminals but the Electrical Heater continues OFF Yes No Check Electrical Heater thermal fuse Yes Has the Thermal fuse blown No Have the Electrical fuses EF1 2 3 blown Contact your local dealer No Yes Contact your local dealer Yes Replac...

Page 401: ... temperature of circuit 2 mixed circuit is 5ºC more than maximum water outlet installer configuration for circuit 2 Yes Check that the contactors of the electrical heater is not short circuited No Is the water outlet circuit 2 THMwo2 temperature Maximum water outlet circuit 2 temperature 5 Faulty PCB1 Check PCB Contact your local dealer Check that the outlet water circuit 2 temperatures is giving ...

Page 402: ...hort circuited No Is the water outlet temperature THMwo Maximum water outlet 5 Faulty PCB1 Check PCB Contact your local dealer Check to make sure the outlet water temperature is giving the correct reading Refer to Alarm 70 procedures Check to make sure the unit is operating within operating range refer to Operating range chapter 1 2 3 4 Contact your local dealer 5 Alarm control procedure Perform r...

Page 403: ...eck to make sure the outlet water temperature is giving the correct position Check to make sure the unit is operating within operating range refer to Operating range chapter Contact your local dealer 1 Are the connectors between PCB1 and PCB2 connected correctly PCB1 CN9 CN1 CN5 CN2 CN6 CN3 CN2 CN4 PCB2 Are thermistors THMwo THMwohp correct Refer to Alarms 12 19 procedures Yes Yes Wiring check rep...

Page 404: ...N2 CN4 PCB2 Are thermistors THMg THMl correct Refer to Alarms 13 14 procedures Yes Yes Yes 1 Wiring check repair breaking of wire wrong wiring Check THMg or THMI and replace it No No Contact your local dealer 2 3 4 5 6 7 8 9 10 Refer to Alarm 70 procedures Check that the refrigerant thermistors THML THMg are positioned correctly Check to make sure the unit is operating within operating range refer...

Page 405: ...d RF Receiver connected correctly LCD CN1 3 CN1 4 TB TB2 3 TB2 4 RF Receiver RF 1 RF 2 Yes Wiring check repair breaking of wire wrong wiring No Contact your local dealer Alarm control procedure The control will continue in normal operation with the following fixed Opentherm values Circuit 1 Uses the last received Room Set point The Room temperature is assumed to be equal to the Room Set point Circ...

Page 406: ...d LED continues to flash on the RF Receiver Incorrect or incomplete binding procedure Repeat the binding procedure Incorrect position of the Room Unit during binding Repeat the binding procedure kee ping approx 1m distance between the RF Receiver and the Room Unit The red LED is on the RF Receiver Communication loss The RF Receiver receives no RF messages from the Room Unit RF signal is blocked du...

Page 407: ...ode is displayed on the seven segments of the indoor unit PCB This alarm code is displayed when there is no concordance between indoor outdoor unit capacity Faulty PCB1 Check it Are the capacity concordance between indoor and outdoor correct Refer to Dip switch setting chapter Yes Turn power OFF and set DIP switches correctly Contact your local dealer No ...

Page 408: ...and LCD User interface Are the connections between PCB1 and LCD User interface correctly connected LCD CN1 1 CN1 2 CN1 3 CN1 4 CN1 5 CN1 6 TB TB2 1 TB2 2 TB2 3 TB2 4 PCB1 CN1 2 CN1 3 CN15 1 CN15 2 Yes Wiring check repair breaking of wire wrong wiring No Set the same address Faulty LCD or PCB1 Check it Yes Contact your local dealer Is the same indoor outdoor address between PCB1 indoor unit and LCD...

Page 409: ...oor unit 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...

Page 410: ...f compressor 08 d 02 00 142 ºC In case that temperature is higher than 100ºC the last two digits flash Evaporating temperature at heating 09 E 2 19 80ºC Ambient air temperature 10 o 3 19 80ºC Cause of stoppage at inverter 11 i 1 See table at the next page Control information 12 F 20 Internal information of outdoor unit PCB Control information 13 A1 12 Internal information of outdoor unit PCB Inver...

Page 411: ...emand thermo OFF 13 Retry for Pd increase prevention 15 Vacuum discharge gas temperature increase retry 16 Retry due to discharge gas SUPERHEAT decrease 17 IPM error retry instantaneous over current of inverter retry electronic thermal activation of inverter retry abnor mal current sensor of inverter retry 18 Retry due to inverter voltage decrease Retry due to Inverter Overvoltage 19 Other retry 2...

Page 412: ...fin thermistor 17 P7 54 4 Electronic thermal activation 17 P7 48 5 Inverter voltage decrease 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 micro computer for inverter 18 12 Earth fault detection from compressor Only starting 17 P7 53 13 Abnormal power source phase Open phase 18 1b In...

Page 413: ...unless a protection control related to frequency control is indicated Code Protection control P 0 Low pressure ratio control at cooling operation P 1 High pressure ratio control at heating operation P 2 High pressure increase protection P 3 Over current protection P 4 IPM fin temperature increase protection P 5 Discharge gas temperature increase protection P 6 Frost formation protection P 9 Unbala...

Page 414: ...cy decrease TL liquid piping temperature of indoor unit P9 Unbalance power source detecting Inverter output current 13A 380A frequency decrease PA Current demand control Inverter output current 2 A frequency decrease In case of demand control setting Pb Low pressure decrease protection Low pressure switch for control is activated frequency decrease PC Cold draft protection TO 10ºC and ε 2 6 freque...

Page 415: ...urce the voltage will decrease lower than DC50V b Connect connecting wires to an electrical soldering iron c Connect the wires to terminals P and N on IPM Discharging is started resulting in hot soldering iron Pay at tention not to short circuit between terminal P and N Transistor module Connecting wires Electrical soldering iron Plug d Wait for 2 or 3 minutes and measure the voltage once again Ch...

Page 416: ...1 to 5kΩ it is normal b 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 module measure the resistan ce If all the resistances are greater than 100kΩ it is normal c By touching the side of the tester to the N terminal of transistor module and the side of tester to U V and W of transistor module measure the resis tance If al...

Page 417: ...re from 5 to 50kΩ it is normal b By touching the side of the tester to the terminal of diode module and the side of tester to the terminals 3 NOs of the diode module measure the resistance If all the resistances are greater than 500kΩ it is nor mal c By touching the side of the tester to the terminal of diode module and the side of tester to the terminals 3 NOs of the diode module measure the resi...

Page 418: ...istance 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 close to the normal values in the table below Faulty Obbserved values will be deviated from the norm...

Page 419: ...the tester to R and S of ISPM measure the resistance If all the resistances are more than 1 kΩ it is normal d By touching the side of the tester to the N terminal of ISPM and the side of the tester to R and S of ISPM measure the resistance If all the resistances are more than 100 kΩ it is normal e By touching the side of the tester to the P terminal of ISPM and the side of the tester to U V and W ...

Page 420: ... of the freeze protection ther mistor becomes lower than the suction air tem perature when the unit which is under chechink stops and the other units are under the cooling process 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 cooling process starts Locked wi...

Page 421: ...e Check the direction by viewing 6 Are power source wires U and V inserted correctly into current sensor Check to ensure that wires are correctly inserted 7 Is expansion 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 moun ted on the valve 9 Are the refrigeration cycle and ...

Page 422: ...H 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 motor winding insulation failure depen ding on overheating conditions 9 If the refrigeration cycle and electrical system are incorrectly co...

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Page 424: ...h the standard ISO 14001 of JACO Japan for its Environmental Management accordance with the standard Hitachi Air Conditioning Products Europe S A is certified with ISO 9001 of AENOR Spain for its Quality Management accordance 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 safe...

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Hitachi RWM-(H)FSN3E, Service Manual

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