Mitsubishi Electric PUHY-P120YHMU-A Service Manual Download Page 156

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HWE0804A

Troubleshooting

[1] Error Code Lists ............................................................................................................. 149

[2] Responding to Error Display on the Remote Controller................................................. 152

[3] Investigation of Transmission Wave Shape/Noise......................................................... 231

[4] Troubleshooting Principal Parts ..................................................................................... 234

[5] Refrigerant Leak ............................................................................................................ 265

[6] Compressor Replacement Instructions.......................................................................... 267

[7] Troubleshooting Using the Outdoor Unit LED Error Display.......................................... 269

Summary of Contents for PUHY-P120YHMU-A

Page 1: ......

Page 2: ...or fixed cables may produce heat and start a fire Take appropriate safety measures against strong winds and earthquakes to prevent the unit from falling If the unit is not installed properly the unit may fall and cause serious injury to the person or damage to the unit Do not make any modifications or alterations to the unit Consult your dealer for repair Improper repair may result in water leakag...

Page 3: ...er leakage electric shock and or fire After completing the service work check for a gas leak If leaked refrigerant is exposed to a heat source such as a fan heater stove or electric grill poisonous gases may be produced Do not try to defeat the safety features of the unit Forced operation of the pressure switch or the temperature switch by defeating the safety features of these devices or the use ...

Page 4: ...gaseous refrigerant is charged into the system the com position of the refrigerant in the cylinder will change and may result in performance loss Use a vacuum pump with a reverse flow check valve If a vacuum pump that is not equipped with a reverse flow check valve is used the vacuum pump oil may flow into the refrigerant cycle and cause the refrigerating machine oil to deteriorate Prepare tools f...

Page 5: ...quently Doing so may lead to a re markable drop in performance electric shock malfunc tions smoke and or fire The presence of organic solvents or corrosive gas i e ammonia sulfur compounds and acid may cause gas leakage or water leakage When installing the unit in a hospital take appropriate measures to reduce noise interference High frequency medical equipment may interfere with the normal operat...

Page 6: ...ires or copper wires may result in malfunctions smoke and or fire Do not spray water on the air conditioner or immerse the air conditioner in water Otherwise electric shock and or fire may result When handling units always wear protective gloves to protect your hands from metal parts and high tempera ture parts Periodically check the installation base for damage If the unit is left on a damaged pl...

Page 7: ...of the unit such as pipes and compressor may be either very cold or hot depending on the state of the refrigerant in the unit at the time To reduce the risk of frost bites and burns do not touch these parts with bare hands Do not operate the unit without panels and safety guards Rotating high temperature or high voltage parts on the unit pose a risk of burns and or electric shock Do not turn off t...

Page 8: ...d ME Remote Controllers 65 2 Group Settings and Interlock Settings via the ME Remote Controller 66 3 Interlock Settings via the MA Remote Controller 70 4 Using the built in Temperature Sensor on the Remote Controller 71 V Electrical Wiring Diagram 1 Electrical Wiring Diagram of the Outdoor Unit 75 2 Electrical Wiring Diagram of Transmission Booster 78 VI Refrigerant Circuit 1 Refrigerant Circuit D...

Page 9: ...HWE0804A GB ...

Page 10: ...Materials 5 4 Storage of Piping 7 5 Pipe Processing 7 6 Brazing 8 7 Air Tightness Test 9 8 Vacuum Drying Evacuation 10 9 Refrigerant Charging 11 10 Remedies to be taken in case of a Refrigerant Leak 11 11 Characteristics of the Conventional and the New Refrigerants 12 12 Notes on Refrigerating Machine Oil 13 ...

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Page 12: ...se of tools page 4 5 Verification of the connecting pipes Verify the type of refrigerant used for the unit to be moved or replaced Use refrigerant pipes made of phosphorus deoxidized copper Keep the inner and outer surfaces of the pipes clean and free of such contaminants as sulfur oxides dust dirt shaving particles oil and water These types of contaminants inside the refrigerant pipes may cause t...

Page 13: ...ing The refrigerant type is indicated The cylinder is pink Charging Port on the Refrigerant Cylinder Refrigerant charging The charge port diameter is larger than that of the current port Flare Nut Connection of the unit with the pipes Use Type 2 Flare nuts Tools Materials Use Notes Gas Leak Detector Gas leak detection The ones for use with HFC refrigerant may be used Vacuum Pump Vacuum drying May ...

Page 14: ...erial Annealed even if the pipe diameter is less than ø19 05 3 4 For a system that uses R410A use pipes that are made with 1 2H material Drawn unless the pipe diameter is at least ø19 05 3 4 and the radial thickness is at least 1 2t The figures in the radial thickness column are based on the Japanese standards and provided only as a reference Use pipes that meet the local standards O material Anne...

Page 15: ...For margin adjustment a copper pipe gauge is necessary 6 Flare nut The flare nut type has been changed to increase the strength The size of some of the flare nuts have also been changed The figures in the radial thickness column are based on the Japanese standards and provided only as a reference Use pipes that meet the local standards Flare processing dimensions mm in Pipe size mm in A dimension ...

Page 16: ...brazing Keep elbow pipes and T joints in plastic bags The new refrigerator oil is 10 times as hygroscopic as the conventional refrigerating machine oil such as Suniso and if not handled with care could easily introduce moisture into the system Keep moisture out of the pipes for it will cause the oil to deteriorate and cause a compressor failure 5 Pipe Processing Use a small amount of ester oil eth...

Page 17: ...pper pipes or between a copper pipe and copper coupling If installed refrigerant pipes are not immediately connected to the equipment then braze and seal both ends 2 Reasons The new refrigerating machine oil is 10 times as hygroscopic as the conventional oil and is more likely to cause unit failure if water infiltrates into the system Flux generally contains chloride Residual flux in the refrigera...

Page 18: ...ount Refrigerant R410A must be charged in its liquid state vs gaseous state 2 Reasons Oxygen if used for an air tightness test poses a risk of explosion Only use nitrogen to check air tightness Refrigerant R410A must be charged in its liquid state If gaseous refrigerant in the cylinder is drawn out first the composition of the remaining refrigerant in the cylinder will change and become unsuitable...

Page 19: ...rough vacuum drying re moves moisture in the pipes Verify that the vacuum degree has not risen by more than 1Torr 130Pa 1hour after evacuation A rise by less than 1Torr 130Pa is acceptable If the vacuum is lost by more than 1Torr 130Pa conduct evacuation following the instructions in section 6 Special vacuum drying 5 Procedures for stopping vacuum pump To prevent the reverse flow of vacuum pump oi...

Page 20: ...ge and be come unsuitable for use 2 Notes When using a cylinder with a siphon refrigerant is charged in the liquid state without the need for turning it upside down Check the type of the cylinder on the label before use 10 Remedies to be taken in case of a Refrigerant Leak If the refrigerant leaks out it may be replenished The entire refrigerant does not need to be replaced Charge refrigerant in t...

Page 21: ...laced 3 Pressure characteristics The pressure in the system using R410A is 1 6 times as great as that in the system using R22 New Refrigerant HFC type Conventional Refriger ant HCFC type R410A R407C R22 R32 R125 R32 R125 R134a R22 Composition wt 50 50 23 25 52 100 Type of Refrigerant Pseudo azeotropic Refrigerant Non azeotropic Refrigerant Single Refrigerant Chloride Not included Not included Incl...

Page 22: ...nants is defined as moisture air processing oil dust dirt wrong types of refrigerant and refrigerating machine oil Cause Symptoms Effects on the refrigerant cycle Water infiltration Frozen expansion valve and capillary tubes Clogged expansion valve and capillary tubes Poor cooling performance Compressor overheat Motor insulation failure Burnt motor Coppering of the orbiting scroll Lock Burn in on ...

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Page 24: ...ress Settings 19 4 Sample System Connection 26 5 An Example of a System to which an MA Remote Controller is connected 27 6 An Example of a System to which an M NET Remote Controller is connected 37 7 An Example of a System to which both MA Remote Controller and M NET Remote Controller are connected 39 8 Restrictions on Pipe Length 41 ...

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Page 26: ...not be able to perform at the rated capacity when they are operated simultaneously Select a combination of units so that the total capacity of the connected indoor units is at or below the capacity of the outdoor unit whenever possible Outdoor units Composing units Maximum total capacity of connectable indoor units Maximumnumber of connectable in door units Types of connectable in door units 72 36...

Page 27: ...h both MA Remote Controller and M NET Remote Controller are connected before performing wiring work Types and maximum allowable length of cables Control lines are categorized into 2 types transmission line and remote controller line Use the appropriate type of cables and observe the maximum allowable length specified for a given system If a given system has a long transmission line or if a noise s...

Page 28: ... the indoor outdoor transmission line 2 The outdoor units in the same refrigerant circuit are automatically designated as OC OS1 and OS2 in the order of capacity from large to small if two or more units have the same capacity in the order of address from small to large 3 Turn off the power to all the outdoor units in the same refrigerant circuit MA remote controller 1 M NET remote controller 2 Cab...

Page 29: ...1 Assign an arbitrary but unique address to each of these units after assigning an address to all indoor units 00 M NET remote controller Main remote controller 101 to 150 Add 100 to the smallest address of all the indoor units in the same group 101 Sub remote controller 151 to 200 2 Add 150 to the smallest address of all the indoor units in the same group MA remote controller No address settings ...

Page 30: ...n off by the plug individually All the units in the same refrigerant cir cuits will be turned on or off by the plug 4 Requires that the dipswitch settings for all the units in the group be made 5 To control the external input to and output from the air conditioners with the PLC software for general equipment via the G B 50A set SW1 9 and SW1 10 to ON With these settings made the power start stop f...

Page 31: ... outdoor unit It can be used as the DEMAND control device for each system DEMAND level CN3D 2 2 For details refer to 1 through 4 shown below Adapter for external input PAC SC36NA E Performs a low level noise operation of the outdoor unit by an ex ternal input to the outdoor unit It can be used as the silent operation device for each refrigerant system Low noise mode level 3 4 3 Low noise mode is v...

Page 32: ...y Preparations in the field OFF Cooling ON Heating Normal Y OFF ON X Contact rating voltage DC15V Contact rating current 0 1A Minimum applicable load 1mA at DC X Cooling Heating Y Validity Invalidity of X X Y Relay CN3N X Y Relay circuit Adapter 2 Outdoor unit control board Maximum cable length is 10m 1 2 3 4 CN3D 2 Optional part PAC SC36NA E or field supply X Low noise mode X Low noise mode Y Com...

Page 33: ... with the outdoor unit whose SW4 4 is set to ON CN3D 1 3P Compressor ON OFF 1 Open Compressor ON Short circuit Compressor OFF CN3D 1 2P Low noise mode 2 Open OFF Short circuit ON CN3D 1 2P CN3D 1 3P Open Short circuit Open 100 No DEMAND 75 Short circuit 0 Compressor OFF 50 8 levels of on DEMAND No 2 CN3D 1 2P Open Short circuit No 1 CN3D 1 2P 1 3P Open Short circuit Open Short circuit Open Open 10...

Page 34: ...No 1 CN3D 1 2P 1 3P Open Short circuit Open Short circuit Open Short circuit Open Short circuit Open Open 100 67 92 84 67 34 59 50 Short circuit 67 34 59 50 34 0 25 17 Short circuit Open 92 59 84 75 59 25 50 42 Short circuit 84 50 75 67 50 17 42 34 12 levels of on DE MAND No 2 CN3D 1 2P Short circuit 1 3P Open Short circuit No 3 CN3D 1 2P Open Short circuit Open Short circuit No 1 CN3D 1 2P 1 3P O...

Page 35: ... with one out door unit NO Manual address setup Connection of multiple LOSS NAY units 3 Grouping of units in a system with multiple outdoor units NO Manual address setup 4 System with one out door unit With connection to transmission line for centralized control Manual address setup 5 System with one out door unit With connection to indoor outdoor transmission line Manual address setup System conf...

Page 36: ...its in the same system refer to the next section 5 2 An example of a system with one outdoor unit to which 2 or more LOSSNAY units are connected page 29 3 Maximum allowable length 1 Indoor outdoor transmission line Maximum distance 1 25mm2 AWG16 or larger L1 L2 L3 L4 200m 656ft L1 L2 L11 L12 L13 200m 656ft 2 Transmission line for centralized control No connection is required 3 MA remote controller...

Page 37: ...B15 on all indoor units IC in the same group and then connect terminals 1 and 2 on the terminal block TB15 on the in door unit on one end to the terminal block on the MA re mote controller Non polarized two wire When performing a group operation of indoor units that have different functions Automatic indoor outdoor ad dress setup is not available 4 LOSSNAY connection Connect terminals M1 and M2 on...

Page 38: ... units of the 72 model or above is connected are con nected 3 Maximum allowable length 1 Indoor outdoor transmission line Same as 5 1 2 Transmission line for centralized control No connection is required 3 MA remote controller wiring Same as 5 1 L2 TB3 51 52 TB7 S TB3 TB7 S IC TB5 S TB15 1 2 01 IC TB5 S TB15 1 2 02 A B MA A B MA LC TB5 S 05 IC TB5 S 1 2 TB15 IC TB5 S TB15 1 2 04 03 LC TB5 S 06 A B...

Page 39: ...roce dures Unit or controller Address setting range Setting method Notes Factory setting 1 Indoor unit Main unit IC 01 to 50 Assign the smallest ad dress to the main unit in the group To perform a group opera tion of indoor units that have different functions designate the indoor unit in the group with the great est number of functions as the main unit 00 Sub unit Assign sequential numbers startin...

Page 40: ...oor transmission line Maximum distance 1 25mm2 AWG16 or larger L11 L12 200m 656ft L21 L22 200m 656ft 2 Transmission line for centralized control Maximum line distance via outdoor unit 1 25mm2 AWG16 or larger L12 L31 L22 500m 1640ft L11 L31 L21 500m 1640ft 3 MA remote controller wiring Same as 5 1 IC TB5 S TB15 1 2 01 IC TB5 S TB15 1 2 03 A B MA A B MA LC TB5 S 07 IC TB5 S 1 2 TB15 IC TB5 S TB15 1 ...

Page 41: ...ted to the sys tem Same as 5 1 Group operation of indoor units Same as 5 2 4 LOSSNAY connection Same as 5 2 5 Switch setting Address setting is required as follows 5 Address setting method The outdoor units in the same refrigerant circuit are automatically designated as OC OS1 and OS2 Proce dures Unit or controller Address setting range Setting method Notes Factory setting 1 Indoor unit Main unit ...

Page 42: ... setting 3 Maximum allowable length 1 Indoor outdoor transmission line Same as 5 3 2 Transmission line for centralized control Maximum line distance via outdoor unit 1 25mm2 AWG16 or larger L32 L31 L12 L11 500m 1640ft L32 L22 L21 500m 1640ft L12 L11 L31 L22 L21 500m 1640ft 3 MA remote controller wiring Same as 5 1 IC TB5 S TB15 1 2 01 IC TB5 S TB15 1 2 02 A B MA A B MA LC TB5 S 07 IC TB5 S 1 2 TB1...

Page 43: ...for indoor outdoor transmission line TB5 on LOSSNAY LC Non polarized 2 core cable Indoor units must be interlocked with the LOSSNAY unit using the system controller Refer to the operation man ual for the system controller for the setting method In terlock setting from the remote controller is required if the ON OFF remote controller alone or the LM adapter alone is connected 5 Switch setting Addre...

Page 44: ...ontrol ler cannot be connected to the indoor outdoor transmission line 3 Maximum allowable length 1 Indoor outdoor transmission line Maximum distance 1 25mm2 AWG16 or larger L11 L12 200m 656ft L21 L22 200m 656ft L25 200m 656ft 2 Transmission line for centralized control Maximum line distance via outdoor unit 1 25mm2 AWG16 or larger L25 L31 L12 L11 500m 1640ft L12 L11 L31 L22 L21 500m 1640ft 3 MA r...

Page 45: ...o the sys tem Same as 5 1 Group operation of indoor units Same as 5 1 4 LOSSNAY connection Connect terminals M1 and M2 on the terminal block TB5 on the indoor units IC to the appropriate termi nals on the terminal block for indoor outdoor transmis sion line TB5 on LOSSNAY LC Non polarized two wire Indoor units must be interlocked with the LOSSNAY unit using the system controller Refer to the opera...

Page 46: ...length 0 3 to 1 25mm2 AWG22 to 16 m1 10m 32ft m2 m3 10m 32ft If the standard supplied cable must be extended use a cable with a diameter of 1 25mm2 AWG16 The section of the cable that exceeds 10m 32ft must be included in the maximum indoor outdoor transmission line distance described in 1 When connected to the terminal block on the Simple re mote controller use cables that meet the following cable...

Page 47: ...smallest ad dress to the main unit in the group To perform a group operation of indoor units that have differ ent functions desig nate the indoor unit in the group with the greatest number of functions as the main unit 00 Sub unit Assign sequential num bers starting with the ad dress of the main unit in the same group 1 Main unit address 1 main unit address 2 main unit address 3 etc 2 LOSSNAY LC 0...

Page 48: ...re than 16 indoor including one or more indoor units of the 72 model or above are connected 11 When a power supply unit is connected to the transmis sion line for centralized control leave the power jumper connector on CN41 as it is factory setting 3 Maximum allowable length 1 Indoor outdoor transmission line Same as 5 3 2 Transmission line for centralized control Same as 5 4 3 MA remote controlle...

Page 49: ...group 1 Main unit address 1 main unit address 2 main unit ad dress 3 etc MA re mote con troller Main re mote con troller MA No settings required Main Sub remote controller MA Sub remote controller Settings to be made ac cording to the remote controller function selec tion 2 Opera tion withthe M NET remote control ler In door unit Main unit IC 01 to 50 Assign the smallest ad dress to the main unit ...

Page 50: ...valent length 190 623 or less Total pipe length from the first branch to the far thest indoor unit B C c or D f 40 131 or less Height difference Between indoor and outdoor units Outdoor unit above in door unit H 50 164 or less Outdoor unit below in door unit H 40 131 or less Between indoor units h 15 49 or less L B e h f 6 1 a c b 3 2 5 A D C d 4 H H Branch joint Indoor Indoor Indoor Indoor Indoor...

Page 51: ... 0 3 or less Indoor Indoor Indoor Indoor Indoor Indoor Indoor Indoor E L H a h1 h2 b 2 1 c 3 d 4 e 5 f 6 g 7 i 8 C E F G I J K M B D A First branch Note To downstream units Note Total sum of downstream unit model numbers in the table is the sum of the model numbers of the units after point E in the figure Note1 Install the pipe that connects the branch pipe and the outdoor units in the way that it...

Page 52: ...th exceeds 40 m 131 ft ø22 2 7 8 144 model ø12 7 1 2 ø28 58 1 1 8 168 model ø15 88 5 8 ø28 58 1 1 8 192 model ø15 88 5 8 ø28 58 1 1 8 216 model ø15 88 5 8 ø28 58 1 1 8 240 model ø15 88 5 8 ø28 58 1 1 8 264 312 model ø19 05 3 4 ø34 93 1 3 8 336 360 model ø19 05 3 4 ø41 28 1 5 8 model Pipe diameter mm inch 06 15 models Liquid pipe ø6 35 1 4 Gas pipe ø12 7 1 2 18 54 models Liquid pipe ø9 52 3 8 Gas p...

Page 53: ... Size of the refrigerant pipe between the first distributor or the second distributor and outdoor units Only applicable to the 120 model and below Liquid pipe size mm inch Gas pipe size mm inch ø19 05 3 4 ø34 93 1 3 8 Liquid pipe size mm inch Gas pipe size mm inch 72 model ø9 52 3 8 ø22 2 7 8 96 model 120 model ø12 7 1 2 ...

Page 54: ... 45 HWE0804A GB III Outdoor Unit Components 1 Outdoor Unit Components and Refrigerant Circuit 47 2 Control Box of the Outdoor Unit 49 3 Outdoor Unit Circuit Board 52 ...

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Page 56: ...HWE0804A GB III Outdoor Unit Components 1 Outdoor Unit Components and Refrigerant Circuit 1 PUHY P72 P96 P120THMU A PUHY P72 P96 P120YHMU A 1 Front view of a outdoor unit Fan Control Box Fan guard Fin guard Front panel Heat exchanger ...

Page 57: ...near Expansion Valve LEV1 Subcool coil High pressure check joint Low pressure check joint 4 way valve 21S4a 4 way valve 21S4b Check valve Low pressure sensor 63LS High pressure sensor 63HS1 Accumulator Transformer Box YHMU A only Compressor cover Compressor Oil separator Solenoid valve SV1a Solenoid valve SV9 Gas side valve Liquid side valve Linear Expansion Valve LEV2a 2b Solenoid valve SV5b Line...

Page 58: ...igh voltage parts When opening or closing the front panel of the control box do not let it come into contact with any of the internal components Before inspecting the inside of the control box turn off the power keep the unit off for at least 10 minutes and confirm that the voltage between FT P and FT N on INV Board has dropped to DC20V or less It takes about 10 minutes to discharge electricity af...

Page 59: ... minals to remove them Current sensor ACCT3 Note 2 Fan board INV board Control board DC reactor DCL Diode stack Noise filter Current sensor DCCT1 Terminal block for power supply TB1 Ground terminal Smoothing capacitor C1 Note 1 Current sensor ACCT2 Current sensor ACCT1 IPM Terminal block for transmission line TB3 TB7 M NET board Electromagnetic relay 72C INV board Terminal block for power supply T...

Page 60: ... III Outdoor Unit Components 51 HWE0804A GB 4 Transformer Box PUHY P72 P96 P120YHMU A Transformer T03 Transformer T02 ...

Page 61: ...GND Output 5VDC Power supply detection input Power supply ON OFF signal output CNS2 Transmission line input output for centralized control system 30VDC CN41 Power supply for centralized control OFF CN40 Power supply for centralized control ON CN102 Indoor outdoor transmission line input output 30VDC Power supply input for centralized control system 30VDC External signal input contact input F01 Fus...

Page 62: ...put 5VDC Power supply detection output Power supply ON OFF signal input LED1 Power supply for indoor transmission line TP1 2 Check pins for indoor outdoor transmission line TB7 Terminal block for transmission line for centralized control TB3 Indoor outdoor transmission block Ground terminal for transmission line Grounding Grounding CN04 Bus voltage input YHMU only Bus voltage output THMU only P N ...

Page 63: ...Output 5VDC LED1 Lit Inverter in normal operation Blink Inverter error CN4 GND INV Boar Serial communication signal output CNDC Bus voltage output P N CN2 Serial communication signal output GND Input 17VDC SC V Inverter output V SC W Inverter output W CT22 Current sensor W SC U Inverter output U CT12 Current sensor U SC R Input L1 SC S Input L2 SC T Input L3 CT3 Current sensor L3 TB N Note Bus vol...

Page 64: ...PU operation SW1 ON No load operation setting OFF Normal setting Fixed to OFF CN5V GND Output 5VDC CN2 Serial communication CN4 GND Fan board Serial communication LED3 Lit while charging CNFG Functional earth F02 Fuse 250VAC 3 15A CNDC3 BUS voltage output P N CNDC2 BUS voltage input P N CNDC1 BUS voltage output P N IPM driving power supply output and signal output IPM N BUS voltage input output N ...

Page 65: ...tage check terminal P Note Bus voltage check terminal N Note 1 SC P2 Bus voltage Input P SC P1 Rectifier diode output P LED1 Lit Inverter in normal operation Blink Inverter error CN6 Open No load operation setting Short circuited Normal setting CN5V GND Output 5VDC RSH1 Overcurrent detection resistor CN4 GND INV Board Serial communication signal output CN2 Serial communication signal output GND In...

Page 66: ...on signal output GND Control board Serial communication signal output CN22 GND INV board Input 5VDC Serial communication signal input GND INV board Input 17VDC CN21 Serial communication signal output GND INV board Input 17VDC THBOX Thermistor Control box internal temperature detection LED1 Inverter in normal operation LED2 Inverter error DIP IPM Rear CNINV Inverter output W V U R630 Overcurrent de...

Page 67: ...unication signal output CN5 GND Control board Serial communication signal output CN21 Serial communication signal output GND INV board Input 17VDC CN22 GND INV board Input 5VDC Serial communication signal input GND INV board Output 17VDC THBOX Thermistor Control box internal temperature detection LED1 Inverter in normal operation LED2 Inverter error DIP IPM Rear R630 R631 Overcurrent detection res...

Page 68: ...nit Components 59 HWE0804A GB 5 Noise Filter 1 PUHY P72 P96THMU A Grounding TB21 Input output L1 CN02 Output L1 L2 TB22 Input output L2 TB23 Input output L3 CN01 Input L3 L2 L1 F1 Fuse 250VAC 6 3A F2 Fuse 250VAC 6 3A ...

Page 69: ...tection resistor TB42 Bus voltage output N TB31 Bus voltage output P CN03 72C drive input Electromagnetic relay 72C Diode stack rectified voltage input Diode stack output Output Diode stack input TB23 Input L3 TB22 Input L2 TB21 Input L1 CN01 Input L3 L2 L1 F2 Fuse 250VAC 6 3A F1 Fuse 250VAC 6 3A CN02 Output L1 L2 ...

Page 70: ...L2 L3 current P N CN5 Output Rectified L2 L3 current P N TB21 Input output L1 TB22 Input output L2 TB23 Input output L3 CN1B Input L3 L2 CN1A Input L1 Grounding F1 F2 F3 F4 Fuse 250VAC 6 3A CN6 Input L2 L3 Grounding CN2 Surge absorber circuit Surge absorber circuit Short circuit Short circuit ...

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Page 72: ...s and Specifications of MA and ME Remote Controllers 65 2 Group Settings and Interlock Settings via the ME Remote Controller 66 3 Interlock Settings via the MA Remote Controller 70 4 Using the built in Temperature Sensor on the Remote Controller 71 ...

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Page 74: ...chain the indoor units using non polar ized 2 core cables Non polarized 2 core cable Remote controller connection Connectable to any indoor unit in the group Connectable anywhere on the indoor out door transmission line Interlock with the ventilation unit Each indoor unit can individually be in terlocked with a ventilation unit Set up via remote controller in the group Each indoor unit can individ...

Page 75: ...tion of registration Unit type Indoor unit in this case blinks to indicate a registration error Indicates that selected address does not have a corresponding unit 4 To register the addresses for multiple indoor units repeat steps and above 3 4 To search for an address go to section 2 Address Search To next page To search for an address go to section 2 Address Search Bring up the Interlock Setting ...

Page 76: ...NAY and indoor unit that is interlocked with it will be displayed alternately LOSSNAY can be searched in the same manner by bringing up the LOSSNAY address in the Interlocked unit address display window B Interlock setting search After performing step proceed as follows Bring up the address of the indoor unit to be searched on the display Select the address of the indoor unit to be searched by pre...

Page 77: ...temperature range setting on the simultaneous cooling heating type units that supports the automatic operation mode to save on energy consumption enable the Skip Auto Mode setting to make the automatic operation mode unselectable If the automatic operation mode is selected the energy saving function may not work properly When connected to the air conditioning units that do not support the automati...

Page 78: ...atic operation cannot be performed The automatic operation mode is skipped in the function selection mode sequence The left figure shows the display that appears when the current temperature range setting is between 19 C and 30 C in the Cool Dry mode and the lower limit temperature is selected to be set 2 Temperature range setting for heating 4 Switch between the Lower and Upper limit temperature ...

Page 79: ...d The registered indoor unit address and IC and the interlocked LOSSNAY address and LC will appear alternately Registration error If the registration fails the indoor unit address and the LOSSNAY address will be displayed alternately Registration cannot be completed The selected unit address does not have a corresponding indoor unit or a LOSSNAY unit Registration cannot be completed Another LOSSNA...

Page 80: ...o search for the address of the LOSSNAY unit that is interlocked with the selected indoor unit Search completed With a LOSSNAY connection The indoor unit address and IC and the interlocked LOSSNAY address and LC will appear alternately Take the following steps to delete the interlock setting between a LOSSNAY unit and the interlocked indoor unit from the remote controller that is connected to the ...

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Page 82: ... 73 HWE0804A GB V Electrical Wiring Diagram 1 Electrical Wiring Diagram of the Outdoor Unit 75 2 Electrical Wiring Diagram of Transmission Booster 78 ...

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Page 84: ...NLVC red CNLVA 1 2 2 1 3 1 CN801 yellow CNT02 CN332 blue CN4 2 1 2 2 3 3 1 2 3 CN41 CN102 CN3D 4 1 red CN3S red CNIT yellow CNS2 CN202 red CN201 CN215 black CN211 4 3 2 1 Power selecting connector 2 1 Z24 Z25 3 CNLVB red ON CNTYP5 green CNTYP4 green CN990 CN40 LED2 CPU in operation CN212 CN213 red TB1 L3 L2 white red Noise Filter F1 AC250V 6 3A T W CX6 CY3 V black SC V 7 t black INV Board RSH2 3 Z...

Page 85: ... TP1 2 Magnetic relay inverter main circuit TB7 3 F01 AC250V 3 15A T 4 5 M NET power supply circuit 1 2 1 CN102 black black Current sensor AC M NET Board 4 3 2 Crankcase heater for heating the compressor 3 5 4 CNINV 2 6 CNLVC red 1 CNTYP5 green 2 4 CN4 3 2 3 LEV2b Error detection output 1 1 CN215 black CN201 63LS t 3 1 CN4 LED2 Error TH6 CN41 CN21 blue t THHS Z26 THBOX 4 black 3 1 2 1 SWU1 2 1 CNT...

Page 86: ...01 AC250V 3 15A T 1 t CN507 red ON OFF 10 SWU1 white CN213 red SC L2 3 Z24 7 4 3 2 1 1 2 2 7 1 2 CN5 1 CN4 red CNINV 3 4 R630 1 1 C630 3 CN22 red C631 5 F01 DC700V 4A T 1 CNTYP5 green 4 LED2 Error 21S4a 1 LED1 Normal operation 2 3 2 U X02 X03 CN18V blue 5 1 7 CN4 3 CN6 2 IGBT 4 SC P1 FT P black C30 red Diode Bridge CT3 72C C1 CN2 CNTYP black R1 black TB22 6 3 RSH1 CN102 3 R6 C17 1 1 1 FAN Board 63...

Page 87: ...White White Blue Red Red DSA White White Blue Red Red Red Red Varistor Varistor Noise filter Stabilized power supply 4 3 2 1 1 2 3 CN2 CN1 Black Black Black Black Green Yellow 1 2 3 E 4 Choke coil 1 2 CN3 1 2 1 2 CN4 CN2 1 2 CN1 Electronic control board Black White Red Red Black S B A S B A Terminal block 2 for transmission line TB3 Expanded indoor unit side Terminal block 1 for transmission line ...

Page 88: ... 79 HWE0804A GB VI Refrigerant Circuit 1 Refrigerant Circuit Diagram 81 2 Principal Parts and Functions 82 ...

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Page 90: ...2 PUHY P120 models HEX O S Comp ACC CP2 SV9 BV1 BV2 ST2 ST1 LEV2a LEV2b CV SV5b 63LS CJ1 CP1 TH5 21S4b TH6 TH7 TH3 TH2 TH4 CJ2 ST7 63HS1 ST6 ST3 21S4a 63H1 SV1a LEV1 SCC SCC LEV1 SV1a ACC 63H1 21S4a ST3 ST6 63HS1 ST7 TH4 TH2 TH3 TH7 TH6 21S4c TH5 CP1 CJ1 63LS SV5c Comp O S CV LEV2b LEV2a ST2 BV2 BV1 21S4b SV5b SV9 CP2 ST1 CJ2 HEX ...

Page 91: ...hm YHMU High pres sure sensor 63HS1 1 Detects high pressure 2 Regulates frequency and pro vides high pressure protec tion Low pres sure sensor 63LS 1 Detects low pressure 2 Provides low pressure pro tection Pres sure switch 63H1 1 Detects high pressure 2 Provides high pressure pro tection 4 15MPa 601psi OFF setting Pressure 0 4 15 MPa 601psi Vout 0 5 3 5V 0 071V 0 098 MPa 14psi Pressure MPa 1 38 x...

Page 92: ... and LEV2b are controlled based on the 63LS and TH5 val ues TH6 Controls LEV1 based on TH2 TH3 and TH6 data THHS Inverter heat sink tem perature Controls inverter cooling fan based on THHS temperature Degrees Celsius 0 C 32 F 161kohm 10 C 50 F 97kohm 20 C 68 F 60kohm 25 C 77 F 48kohm 30 C 86 F 39kohm 40 C 104 F 25kohm THBOX Control box in ternal tempera ture detection Sole noid valve SV1a Discharg...

Page 93: ...alve driven by a stepping motor 1400 pulses Same as in door LEV Heater CH11 Heats the refrigerant in the com pressor Cord heater AC230V P72 and P96 models 1037 ohm 51W P120 model 928 ohm 57W Resistance check 4 way valve 21S4a Changeover between heating and cooling AC208 230V Dead cooling cycle Live heating cycle Continuity check with a tester 21S4b 1 Changeover between heating and cooling 2 Contro...

Page 94: ...Continuity between yellow brown and blue Thermis tor TH1 Suction air temperature Indoor unit control Thermo 0 C 32 F 15kohm 10 C 50 F 9 7kohm 20 C 68 F 6 4kohm 25 C 77 F 5 3kohm 30 C 86 F 4 3kohm 40 C 104 F 3 1kohm Resistance check TH2 Pipe temper ature 1 Indoor unit control Frost prevention Hot adjust 2 LEV control during heat ing operation subcool detection TH3 Gas pipe temperature LEV control d...

Page 95: ... 86 ...

Page 96: ... 87 HWE0804A GB VII Control 1 Functions and Factory Settings of the Dipswitches 89 2 Controlling the Outdoor Unit 96 3 Operation Flow Chart 108 ...

Page 97: ... 88 ...

Page 98: ...1 1 10 For self diagnosis operation monitoring Refer to the LED monitor display on the outdoor unit board Anytime after power on C C SW2 1 Centralized control switch Without connection to the centralized controller With connection to the centralized con troller Before power on B B 2 Deletion of connec tion information Normal control Deletion Before power on A 3 Deletion of error his tory SW OC Sto...

Page 99: ...uring defrost B B P120 7 C 45 F 5 Target evaporating temperature setting Depends on the setting combination with the SW2 9 setting Note 4 Anytime after power on A 6 Temperature unit setting C F Anytime after power on C C 7 Target condensing temperature setting for heating 49 C 120 F 53 C 127 F A 8 9 Model setting To change the external static pressure setting Outdoor standard static pressure Outdo...

Page 100: ...r CN6 short circuit connector is mated with the mating connector Leave the short circuit connector on the mating connector during normal operation to enable error detection and protect the equipment from damage Switch Function Function according to switch setting Switch setting timing Units that re quire switch setting Note 2 OFF ON OFF ON OC OS SW5 1 2 3 4 5 Low noise mode selection Capacity prio...

Page 101: ...nd the unit may be damaged Switch Function Function according to switch setting Switch setting timing OFF ON OFF ON SW1 1 Enabling disabling the following error detection functions ACCT DCCT sensor failure 5301 Detail No 115 116 ACCT DCCT sensor circuit failure 5301 Detail No 117 118 IPM open Disconnected CNCT2 5301 Detail No 119 Detection of erroneous wiring 5301 Detail No 120 Error detec tion en...

Page 102: ...side air intake Remote display option Humidifier control Self recovery after power failure Fan speed setting for Heating Thermo OFF Power source start stop Unit model selection Louver Vane Vane swing function Vane angle limit setting for cooling operation Initial vane position Heating 4 C 7 2 F up Automatic LEV value conversion function Indoor unit inlet 100h Disabled Fan output 2500h Enabled Ther...

Page 103: ...main sub setting At power on of the remote controller Normal startup Timer mode startup 3 Cooling heating display set by automatic setting Displayed Not displayed 4 Suction temperature display discharge temperature display Displayed Not displayed Operation by switch settings Switch setting timing ON OFF Main Sub Before power on Before power on Before power on Before power on When two remote contro...

Page 104: ...s 108 Address setting range Setting method Main remote controller 101 150 Add 100 to the smallest address of all the indoor units in the same group Sub remote controller 151 200 Add 150 to the smallest address of all the indoor units in the same group Setting of rotary switch Address No 01 99 1 101 199 with the 100 s digit automatically being set to 1 2 00 200 1 At factory shipment the rotary swit...

Page 105: ...e of the outdoor units can be checked with the self diagnosis switch SW1 on the OC 3 Initial Control When the power is turned on the initial processing of the microcomputer is given top priority During the initial processing control processing of the operation signal is suspended The control processing is resumed after the initial processing is completed Initial processing involves data processing...

Page 106: ...ON for 3 minutes Exception OFF when 63HS1 63LS is 0 2 MPa 29 psi or less During defrost operation ON While the compressor is operating at the minimum frequency and when the low pres sure 63LS drops 3 or more minutes after compressor startup When low pressure 63LS drops below 0 23 MPa 33 psi When low pressure 63LS ex ceeds 0 38 MPa 55 psi When high pressure 63HS1 rises When 63HS1 exceeds 3 62 MPa 5...

Page 107: ...actuation pressure is when the high pressure reading on 63HS1 is 3 58MPa 519psi 2 Discharge temperature limit Discharge temperature TH4 of the compressor in operation is monitored and when it exceeds the upper limit the frequency is decreased every minute Operating temperature is 115 C 239 F 3 Periodic frequency control Frequency control other than the ones performed at start up upon status change...

Page 108: ...ted unless one of the following conditions is met Pipe temperature reaches 25 C 77 F and SW3 4 is set to OFF OR 25 TH7 C 77 F TH7 and SW3 4 is set to ON 1 5 C 41 F 25 C 77 F In the multiple outdoor unit system defrosting is stopped on all units at the same time 4 Problems during defrost operation If a problem is detected during defrost operation the operation will be stopped and the defrost prohib...

Page 109: ...g heating operation Starting refrigerant recovery mode The refrigerant recovery mode in heating starts when all of the following three conditions are met 15 minutes have passed since the completion of previous refrigerant recovery TH4 115 C 239 F Frequencies below 50 Hz Refrigerant recovery 1 Refrigerant is recovered with the LEV on the applicable indoor unit unit under stopping mode fan mode cool...

Page 110: ...mperature TH3 or the superheat that is calculated from the values of low pressure 63LS and the bypass outlet temperature TH2 of the subcool coil LEV opening is controlled based on the values of the inlet TH6 and the outlet TH3 temperatures of the subcool coil high pressure 63HS1 and discharge temperature TH4 In a single outdoor unit system the LEV is closed 0 in the heating mode while the compress...

Page 111: ...grated operation time of 90 minutes The compressor on the OC starts up Both the OC and OS stop The startup sequence of the OC and OS is rotated 50 F 60Hz OS or F 50Hz OS Completed in the integrated operation time of 35 minutes Completed in the integrated operation time of 90 minutes The compressor on the OS starts up 2 3 2 The air conditioning load is too small for both the OC and the OS to simult...

Page 112: ...e startup sequence of the OC OS1 and OS2 is changed The OC OS1 and OS2 stop The startup sequence of the OC OS1 and OS2 is rotated The startup sequence of the OC OS1 and OS2 is changed The OC OS1 and OS2 stop The startup sequence of the OC OS1 and OS2 is rotated The startup sequence of the OC OS1 and OS2 is changed 50 F 60Hz OS1 or F 50Hz OS1 Completed in the integrated operation time of 35 minutes...

Page 113: ...rotection Overcurrent relay trip Heatsink temperature sensor failure THHS Current sensor circuit failure Subcool heat exchanger bypass outlet temperature sensor failure Pipe temperature sensor failure Discharge temperature sensor failure Accumulator inlet temperature sensor failure Subcool heat exchanger liquid outlet sensor failure Outside air temperature sensor failure Open phase Power supply sy...

Page 114: ...re occurs or when some of the outdoor units are turned off 1 Starting the emergency operation When the OC is in trouble 1 When an error occurs the error source and the error code appear on the display on the remote controller 2 Reset the error via the remote controller to start an emergency operation Precautions before servicing the unit When the OC is in trouble the OS temporarily takes over the ...

Page 115: ...mode 2 Heating mode All indoor units in operation are in heating mode 3 Stopping mode All indoor units are in fan mode or stopping mode OC Cooling Heating OC failure pattern Trouble Normal Permitted Permitted Permitted Permitted Normal Trouble OS failure pattern OS Emergency operation Maximum total capacity of indoor units Note 1 Capacity that matches the total capacity of the operable outdoor uni...

Page 116: ... is set to ON the 4 step DEMAND control is enabled Eight step demand control is possible in the system with two outdoor units Twelve step demand control is possible in the system with three outdoor units Refer to Chapter II 3 2 7 Various types of control using input output signal connector on the outdoor unit various connec tion options for details page 22 ...

Page 117: ...or stop Error display Self holding of protection function Error command to outdoor unit Indoor unit LEV fully closed Refer to 2 1 Cooling operation Refer to 2 2 Heating operation Refer to 2 3 for dry operation Prohibition Prohibition Prohibition Dry display Heating display Cooling display Dry mode Heating mode Fan mode Fan display Fan operations Operation mode Cooling mode Operation command to out...

Page 118: ...to the operation mode commanded by the indoor unit However when the outdoor unit is running a cooling operation come of the operating indoor units will stop or the operation of these indoor units will be prohibited even when the indoor unit mode is switched from fan mode to heating mode This also applies when the outdoor unit is running a heating operation Start Breaker turned on Operation command...

Page 119: ... minute restart prevention Note 1 YES YES YES NO NO NO 4 way valve OFF 1 Inverter frequency control 2 Indoor unit LEV LEV1 control LEV2a LEV2b fully opened 3 Solenoid valve control 4 Outdoor unit fan control 5 72C control Normal operation During test run mode Unit in the stopped state Indoor unit fan operation 1 Inverter output 0Hz 2 Indoor unit LEV LEV1 LEV2a LEV2b rated opening 3 All solenoid va...

Page 120: ...restart prevention Note 1 2 Note 1 2 YES YES YES YES YES NO NO NO NO NO 1 Indoor outdoor unit fan control 2 Inverter frequency control 3 Indoor unit LEV LEV1 LEV2a LEV2b control 4 Solenoid valve control 5 72C control Normal operation Defrost operation 4 way valve ON During test run mode 1 Indoor unit fan operation at Very Low speed 2 Inverter output 0Hz 3 Indoor unit LEV LEV1 Fully closed LEV2a LE...

Page 121: ...FF 1 or 2 Note 1 When the indoor unit inlet temperature exceeds 18 C 64 F the outdoor unit compressor and the indoor unit fan start the intermittent operation simultaneously When the indoor unit inlet temperature becomes 18 C 64 F or less the fan always runs at low speed The outdoor unit the indoor unit and the solenoid valve operate in the same way as they do in the cooling operation when the com...

Page 122: ... before a Test Run 115 2 Test Run Method 116 3 Operating Characteristic and Refrigerant Amount 117 4 Adjusting the Refrigerant Amount 117 5 Refrigerant Amount Adjust Mode 120 6 The following symptoms are normal 122 7 Standard Operation Data Reference Data 123 ...

Page 123: ... 114 ...

Page 124: ...pressor will evaporate and the insulation resistance will go up Do not measure the insulation resistance of the terminal block for transmission line for the unit remote controller 3 Check that the valve on the gas pipe and liquid pipe are fully open Securely tighten the cap 4 Check the phase sequence and the voltage of the power supply 5 When a transmission booster is connected Turn on the transmi...

Page 125: ... Switch to cooling or heating operation by pressing the Operation Mode button Press the Fan Speed button Change the air flow direction by pressing the Vertical Air Direction button or the Louver button Confirm the operation of outdoor unit fan Confirm the operation of all interlocked equipment such as ventilation equipment Note 1 Refer to the following pages if an error code appears on the remote ...

Page 126: ...t Amount 1 Symptoms Overcharging or undercharging of refrigerant can cause the following symptoms Before attempting to adjust the amount of refrigerant in the system thoroughly check the operating conditions of the system Then adjust the refrigerant amount by running the unit in the refrigerant amount adjust mode 2 Amount of refrigerant 1 To be checked during operation Operate all indoor units in ...

Page 127: ...1 5 Amount of pre charged refrigerant in the outdoor unit lbs oz 19 13 19 13 25 6 Amount of added refrigerant kg 0 29x L1 0 2 x L2 0 12 x L3 0 06 x L4 0 024 x L5 ǩ Amount of added refrigerant oz 3 12x L1 2 15 x L2 1 29 x L3 0 65 x L4 0 26 x L5 ǩ L1 Length of ø19 05 3 4 liquid pipe m L2 Length of ø15 88 5 8 liquid pipe m L3 Length of ø12 7 1 2 liquid pipe m L4 Length of ø9 52 3 8 liquid pipe m L5 L...

Page 128: ...parator Liquid separator All the pipes in the figure are liquid pipes 15 88 30 m 10 m 40 m 9 52 3 m 1m 10 m 10 m 20 m 10 m 10 m 64 m 6 35 10 m According to the above formula The calculation result would be 17 08 and it is rounded up to the nearest 0 1 The final result will be as follows Amount of refrigerant to be charged kg 0 2 X 40 0 06 X 64 0 024 X 10 5 0 17 08kg Amount of refrigerant to be cha...

Page 129: ...y seem adequate for a short while after starting the unit in the refrigerant amount adjust mode but turn out to be inadequate later on when the refrigerant system stabilizes When the amount of refrigerant is truly adequate TH3 TH6 on the indoor unit is 5 C 9 F or above and SH on the indoor unit is between 5 and 15 C 9 and 27 F The refrigerant amount may seem adequate at the moment but may turn out...

Page 130: ...essure side Keep the unit running for 5 minutes after adjusting the refrigerant amount to determine its adequacy Keep the unit running for 5 minutes after adjusting the refrigerant amount to determine its adequacy Turn off SW4 3 on the OC Turn on SW4 3 on the OC Adjustment complete Note 4 Has the initial start up mode been completed Gradually add refrigerant from the service port on the low pressu...

Page 131: ...n it operates at low speed for 2 minutes and finally it operates at the set speed Pre heating stand by When the main power is turned on the display shown on the right appears on the in door unit remote controller for 5 minutes HO or PLEASE WAIT icons blink on the display The system is starting up Wait until the blinking display of HO or PLEASE WAIT go off The drain pump keeps run ning after the un...

Page 132: ...h 25 82 25 82 Fan speed Hi Hi Amount of refrigerant kg lbs oz 11 24 11 24 Outdoor unit Electric current A 14 6 23 4 Voltage V 230 230 Compressor frequency Hz 52 65 LEV open ing Indoor unit Pulse 325 325 387 387 SC LEV1 80 100 LEV2 1400 1400 Pressure High pressure after O S low pressure before accumulator MPa psi 2 59 10 96 376 139 2 83 0 84 410 122 Temp of each sec tion Outdoor unit Discharge TH4 ...

Page 133: ...peed Hi Amount of refrigerant kg lbs oz 15 33 Outdoor unit Electric current A 28 1 Voltage V 230 Compressor frequency Hz 74 LEV open ing Indoor unit Pulse 325 325 325 SC LEV1 100 LEV2 1400 Pressure High pressure after O S low pressure before accumulator MPa psi 2 92 0 90 424 131 Temp of each sec tion Outdoor unit Discharge TH4 C F 73 163 Heat exchanger out let TH3 40 104 Accumulator inlet 10 50 Ac...

Page 134: ...2 25 82 Fan speed Hi Hi Amount of refrigerant kg lbs oz 11 24 11 24 Outdoor unit Electric current A 15 8 24 0 Voltage V 230 230 Compressor frequency Hz 53 71 LEV open ing Indoor unit Pulse 332 332 406 406 SC LEV1 0 0 LEV2 1400 1400 Pressure High pressure after O S low pressure before accumulator MPa psi 2 59 0 67 376 97 2 85 0 64 413 93 Temp of each sec tion Outdoor unit Discharge TH4 C F 72 162 7...

Page 135: ...14 13 16 Fan speed Hi Amount of refrigerant kg lbs oz 15 33 Outdoor unit Electric current A 25 8 Voltage V 230 Compressor frequency Hz 81 LEV open ing Indoor unit Pulse 332 332 332 SC LEV1 0 LEV2 1400 Pressure High pressure after O S low pressure before accumulator MPa psi 2 70 0 65 392 94 Temp of each sec tion Outdoor unit Discharge TH4 C F 70 158 Heat exchanger out let TH3 1 30 Accumulator inlet...

Page 136: ...mount of refrigerant kg lbs oz 19 42 Outdoor unit Electric current A 30 3 Voltage V 230 Compressor frequency Hz 48 48 LEV open ing Indoor unit Pulse 325 325 325 325 SC LEV1 190 190 LEV2 1400 1400 Pressure High pressure after O S low pressure before accumulator MPa psi 2 59 0 96 376 139 2 59 0 96 376 139 Temp of each sec tion Outdoor unit Discharge TH4 C F 69 156 69 156 Heat exchanger out let TH3 4...

Page 137: ...kg lbs oz 19 42 Outdoor unit Electric current A 39 3 Voltage V 230 Compressor frequency Hz 52 60 LEV open ing Indoor unit Pulse 325 325 387 387 SC LEV1 190 190 LEV2 1400 1400 Pressure High pressure after O S low pressure before accumulator MPa psi 2 71 0 90 393 131 2 71 0 90 393 131 Temp of each sec tion Outdoor unit Discharge TH4 C F 69 156 74 165 Heat exchanger out let TH3 44 111 46 115 Accumula...

Page 138: ... kg lbs oz 22 49 Outdoor unit Electric current A 44 1 Voltage V 230 Compressor frequency Hz 52 74 LEV open ing Indoor unit Pulse 387 387 387 387 SC LEV1 100 100 LEV2 1400 1400 Pressure High pressure after O S low pressure before accumulator MPa psi 2 76 0 93 400 135 2 76 0 93 400 135 Temp of each sec tion Outdoor unit Discharge TH4 C F 69 156 73 163 Heat exchanger out let TH3 44 111 40 104 Accumul...

Page 139: ...kg lbs oz 25 55 Outdoor unit Electric current A 53 2 Voltage V 230 Compressor frequency Hz 65 71 LEV open ing Indoor unit Pulse 222 325 325 325 387 387 SC LEV1 159 237 LEV2 1400 1400 Pressure High pressure after O S low pressure before accumulator MPa psi 2 88 0 87 417 126 2 88 0 87 417 126 Temp of each sec tion Outdoor unit Discharge TH4 C F 74 165 73 163 Heat exchanger out let TH3 46 115 40 104 ...

Page 140: ...kg lbs oz 25 55 Outdoor unit Electric current A 58 0 Voltage V 230 Compressor frequency Hz 74 74 LEV open ing Indoor unit Pulse 362 325 325 325 387 387 SC LEV1 237 237 LEV2 1400 1400 Pressure High pressure after O S low pressure before accumulator MPa psi 2 92 0 90 424 131 2 92 0 90 424 131 Temp of each sec tion Outdoor unit Discharge TH4 C F 73 163 73 163 Heat exchanger out let TH3 40 104 40 104 ...

Page 141: ... speed Hi Amount of refrigerant kg lbs oz 19 42 Outdoor unit Electric current A 32 6 Voltage V 230 Compressor frequency Hz 51 51 LEV open ing Indoor unit Pulse 332 332 332 332 SC LEV1 0 LEV2 1400 1400 Pressure High pressure after O S low pressure before accumulator MPa psi 2 59 0 67 376 97 2 59 0 67 376 97 Temp of each sec tion Outdoor unit Discharge TH4 C F 72 162 72 162 Heat exchanger out let TH...

Page 142: ...Amount of refrigerant kg lbs oz 19 42 Outdoor unit Electric current A 41 0 Voltage V 230 Compressor frequency Hz 53 64 LEV open ing Indoor unit Pulse 332 332 406 406 SC LEV1 0 LEV2 1400 1400 Pressure High pressure after O S low pressure before accumulator MPa psi 2 72 0 66 395 95 2 72 0 66 395 95 Temp of each sec tion Outdoor unit Discharge TH4 C F 72 162 75 167 Heat exchanger out let TH3 0 32 2 2...

Page 143: ... Amount of refrigerant kg lbs oz 22 49 Outdoor unit Electric current A 42 8 Voltage V 230 Compressor frequency Hz 71 71 LEV open ing Indoor unit Pulse 406 406 406 406 SC LEV1 0 LEV2 1400 1400 Pressure High pressure after O S low pressure before accumulator MPa psi 2 65 0 66 384 96 2 65 0 66 384 96 Temp of each sec tion Outdoor unit Discharge TH4 C F 72 162 70 158 Heat exchanger out let TH3 0 32 1 ...

Page 144: ...Amount of refrigerant kg lbs oz 25 55 Outdoor unit Electric current A 51 3 Voltage V 230 Compressor frequency Hz 75 75 LEV open ing Indoor unit Pulse 229 332 332 332 406 406 SC LEV1 0 LEV2 1400 1400 Pressure High pressure after O S low pressure before accumulator MPa psi 2 78 0 65 402 94 2 78 0 65 402 94 Temp of each sec tion Outdoor unit Discharge TH4 C F 75 167 70 158 Heat exchanger out let TH3 ...

Page 145: ...Amount of refrigerant kg lbs oz 25 55 Outdoor unit Electric current A 53 1 Voltage V 230 Compressor frequency Hz 85 85 LEV open ing Indoor unit Pulse 373 332 332 332 406 406 SC LEV1 0 LEV2 1400 1400 Pressure High pressure after O S low pressure before accumulator MPa psi 2 70 0 65 392 94 2 70 0 65 392 94 Temp of each sec tion Outdoor unit Discharge TH4 C F 70 158 70 158 Heat exchanger out let TH3 ...

Page 146: ...Outdoor unit Electric current A 59 3 Voltage V 230 Compressor frequency Hz 52 52 74 LEV open ing Indoor unit Pulse 325 325 387 387 387 387 SC LEV1 105 105 105 LEV2 1400 1400 1400 Pressure High pressure after O S low pressure before accumulator MPa psi 2 70 0 94 2 70 0 94 2 70 0 94 392 136 392 136 392 136 Temp of each sec tion Outdoor unit Discharge TH4 C F 69 156 69 156 73 163 Heat exchanger out l...

Page 147: ...c current A 68 3 Voltage V 230 Compressor frequency Hz 52 65 74 LEV open ing Indoor unit Pulse 387 387 387 387 387 387 SC LEV1 141 185 185 LEV2 1400 1400 1400 Pressure High pressure after O S low pressure before accumulator MPa psi 2 78 0 90 2 78 0 90 2 78 0 90 403 131 403 131 403 131 Temp of each sec tion Outdoor unit Discharge TH4 C F 69 156 74 165 73 163 Heat exchanger out let TH3 44 111 46 115...

Page 148: ...c current A 73 2 Voltage V 230 Compressor frequency Hz 52 74 74 LEV open ing Indoor unit Pulse 387 387 387 310 310 310 SC LEV1 141 185 185 LEV2 1400 1400 1400 Pressure High pressure after O S low pressure before accumulator MPa psi 2 81 0 92 2 81 0 92 2 81 0 92 408 133 408 133 408 133 Temp of each sec tion Outdoor unit Discharge TH4 C F 69 156 73 163 73 163 Heat exchanger out let TH3 44 111 40 104...

Page 149: ...c current A 82 2 Voltage V 230 Compressor frequency Hz 65 72 72 LEV open ing Indoor unit Pulse 395 395 395 395 395 395 SC LEV1 171 171 171 LEV2 1400 1400 1400 Pressure High pressure after O S low pressure before accumulator MPa psi 2 89 0 88 2 89 0 88 2 89 0 88 419 128 419 128 419 128 Temp of each sec tion Outdoor unit Discharge TH4 C F 74 165 73 163 73 163 Heat exchanger out let TH3 46 115 40 104...

Page 150: ...ic current A 87 1 Voltage V 230 Compressor frequency Hz 74 74 74 LEV open ing Indoor unit Pulse 325 325 325 387 387 387 387 SC LEV1 171 171 171 LEV2 1400 1400 1400 Pressure High pressure after O S low pressure before accumulator MPa psi 2 92 0 90 2 92 0 90 2 92 0 90 424 131 424 131 424 131 Temp of each sec tion Outdoor unit Discharge TH4 C F 73 163 73 163 73 163 Heat exchanger out let TH3 40 104 4...

Page 151: ... kg lbs oz 31 68 Outdoor unit Electric current A 59 2 Voltage V 230 Compressor frequency Hz 53 53 77 LEV open ing Indoor unit Pulse 332 332 406 406 406 406 SC LEV1 0 0 0 LEV2 1400 1400 1400 Pressure High pressure after O S low pressure before accumulator MPa psi 2 63 0 66 2 63 0 66 2 63 0 66 381 96 381 96 381 96 Temp of each sec tion Outdoor unit Discharge TH4 C F 72 162 72 162 70 158 Heat exchang...

Page 152: ...oz 34 75 Outdoor unit Electric current A 67 6 Voltage V 230 Compressor frequency Hz 53 71 75 LEV open ing Indoor unit Pulse 332 332 406 406 406 406 SC LEV1 0 LEV2 1160 1280 1280 Pressure High pressure after O S low pressure before accumulator MPa psi 2 71 0 65 2 71 0 65 2 71 0 65 394 95 394 95 394 95 Temp of each sec tion Outdoor unit Discharge TH4 C F 72 162 75 167 70 158 Heat exchanger out let T...

Page 153: ... oz 34 75 Outdoor unit Electric current A 69 5 Voltage V 230 Compressor frequency Hz 53 81 81 LEV open ing Indoor unit Pulse 406 406 406 414 414 414 SC LEV1 0 LEV2 1160 1280 1280 Pressure High pressure after O S low pressure before accumulator MPa psi 2 66 0 66 2 66 0 66 2 66 0 66 386 95 386 95 386 95 Temp of each sec tion Outdoor unit Discharge TH4 C F 72 162 70 158 70 158 Heat exchanger out let ...

Page 154: ... oz 37 82 Outdoor unit Electric current A 77 9 Voltage V 230 Compressor frequency Hz 71 74 74 LEV open ing Indoor unit Pulse 414 414 414 414 414 414 SC LEV1 0 LEV2 1280 1280 1280 Pressure High pressure after O S low pressure before accumulator MPa psi 2 75 0 65 2 75 0 65 2 75 0 65 399 94 399 94 399 94 Temp of each sec tion Outdoor unit Discharge TH4 C F 75 167 70 158 70 158 Heat exchanger out let ...

Page 155: ... oz 39 86 Outdoor unit Electric current A 79 7 Voltage V 230 Compressor frequency Hz 78 78 78 LEV open ing Indoor unit Pulse 332 332 332 406 406 406 406 SC LEV1 0 LEV2 1280 1280 1280 Pressure High pressure after O S low pressure before accumulator MPa psi 2 70 0 65 2 70 0 65 2 70 0 65 392 94 392 94 392 94 Temp of each sec tion Outdoor unit Discharge TH4 C F 70 158 70 158 70 158 Heat exchanger out ...

Page 156: ...ding to Error Display on the Remote Controller 152 3 Investigation of Transmission Wave Shape Noise 231 4 Troubleshooting Principal Parts 234 5 Refrigerant Leak 265 6 Compressor Replacement Instructions 267 7 Troubleshooting Using the Outdoor Unit LED Error Display 269 ...

Page 157: ... 148 ...

Page 158: ...ly cutoff O 4102 4152 Open phase O 4106 Transmission power supply fault O 4115 Power supply signal sync error O 4116 RPM error Motor error O O 4220 4225 Note 4320 4325 Note 108 Abnormal bus voltage drop O 109 Abnormal bus voltage rise O 111 Logic error O 131 Low bus voltage at startup O 4230 4330 Heatsink overheat protection O 4240 4340 Overload protection O 4250 4255 Note 4350 4355 Note 101 IPM e...

Page 159: ... outlet tempera ture TH6 O 5107 1221 Temperature sensor fault Outside temperature TH7 O 5110 1214 01 Temperature sensor fault Heatsink temperature THHS O 5201 High pressure sensor fault 63HS1 O 5301 4300 115 ACCT sensor fault O 117 ACCT sensor circuit fault O 119 Open circuited IPM Loose ACCT connector O 120 Faulty ACCT wiring O 5701 Loose float switch connector O 6201 Remote controller board faul...

Page 160: ...ontroller signal transmission error Hardware error O O 6834 MA controller signal reception error Start bit de tection error O O 7100 Total capacity error O 7101 Capacity code setting error O O O 7102 Wrong number of connected units O 7105 Address setting error O 7106 Attribute setting error O 7110 Connection information signal transmission recep tion error O 7111 Remote controller sensor fault O O...

Page 161: ...board and the Fan board 3 Cause check method and remedy 1 Faulty wiring Check the following wiring connections 1 Between Control board and Fan board 2 Between Fan board and INV board 2 INV board failure Fan board failure and Control board failure Replace the INV board or the Fan board or control board when the power turns on automatically even if the power source is reset Refer to section 6 Invert...

Page 162: ...use check method and remedy 1 Faulty wiring Check the following wiring connections 1 Between Control board and Fan board 2 Between Fan board and INV board 2 INV board failure Fan board failure and Control board failure Replace the INV board or the Fan board or control board when the power turns on automatically even if the power source is reset Refer to section 6 Inverter YHMU A under part 4 Troub...

Page 163: ...er the stop the first stop or the second stop of the outdoor unit preliminary errors will be displayed on the LED display 3 Cause check method and remedy 1102 Cause Check method and remedy 1 Gas leak gas shortage Refer to the page on refrigerant amount evaluation page 117 2 Overload operation Check operating conditions and operation status of indoor outdoor units 3 LEV failure on the indoor unit P...

Page 164: ...t up the operation immediately stops 3 Cause check method and remedy 1301 Cause Check method and remedy 1 Inner pressure drop due to a leakage Refer to the section on troubleshooting the low pressure sensor page 235 2 Low pressure sensor failure 3 Short circuited pressure sensor cable due to torn outer rubber 4 A pin on the male connector is missing 5 Disconnected wire 6 Failure of the low pressur...

Page 165: ...ating Perform a cooling or heating operation to check the oper ation Cooling Indoor unit LEV2a b Heating Indoor unit LEV Refer to the section on troubleshooting the LEV page 238 2 Closed refrigerant service valve Confirm that the refrigerant service valve is fully open 3 Short cycle on the indoor unit side Check the indoor units for problems and correct them if any 4 Clogged filter on the indoor u...

Page 166: ...F or below is detected after 30 minutes have elapsed after a stoppage of the outdoor unit the unit will follow the same sequence as the first detection of the condition as described in section 1 above 5 The period of 30 minutes after a stoppage of the outdoor unit is regarded as a preliminary error and a preliminary error code appears on the LED display 3 Cause check method and remedy 1302 Cause C...

Page 167: ...topped 4 Preliminary water leakage is cancelled when the following conditions are met One hour after the preliminary water leakage was detected it is not detected that the drain pump goes from OFF to ON The operation mode is changed to Cool Dry The liquid pipe temperature minus the inlet temperature is 10 C 18 F or less 3 Cause check method and remedy 2500 Cause Check method and remedy 1 Drain wat...

Page 168: ...ter leakage was detected it is not detected that the drain pump goes from OFF to ON The operation mode is changed to Cool Dry The liquid pipe temperature minus the inlet temperature is 10 C 18 F or less 3 Cause check method and remedy Reference 2500 Cause Check method and remedy 1 Drain water drainage problem Clogged drain pump Clogged drain piping Backflow of drain water from other units Check fo...

Page 169: ...an Fan or Stop to an error stop 2502 appears on the monitor of the units that came to an error stop 6 Forced stoppage of the outdoor unit Detection timing The error is detected whether the unit is in operation or stopped 7 Ending criteria for the forced stoppage of outdoor unit Power reset the indoor unit that was identified as the error source and the outdoor unit that is connected to the same re...

Page 170: ...ngs the outdoor unit in the same refrigerant circuit to an error stop compressor operation prohibited and the outdoor unit brings all the indoor units in the same refrigerant circuit that are in any mode other than Fan or Stop to an error stop 6 Forced stoppage of the outdoor unit Detection timing The error is detected whether the unit is in operation or stopped This error is detected whether the ...

Page 171: ...ure thermistor or suction temperature thermistor or short or open circuited Drain pump is in operation One hour has elapsed since the drain sensor went off Short 90 C 194 F or above Open 20 C 4 F or below 3 Cause check method and remedy 2503 Cause Check method and remedy 1 Faulty connector CN31 insertion 1 Check for connector connection failure Reinsert the connector restart the operation and chec...

Page 172: ...601 Cause Check method and remedy 1 The water tank of the humidifier is empty Check the amount of supply water Check for the solenoid valve and for the connection 2 The solenoid valve for humidification is OFF Check the connector 3 Disconnected float switch Check the connecting part 4 Poor operation of float switch Check for the float switch 5 Frozen water tank Turn off the power source of the wat...

Page 173: ...age at the CN02 connector is 188 V or above 3 Wiring failure Confirm that the voltage at the control board connector CNAC is 188 V or above If the voltage is below 188V check the wiring connection between the noise filter board CN02 and control board CNAC P72 and P96 models Confirm that the wiring between TB23 and INV board SC T is put through CT3 P120 model Confirm that the wiring between the coi...

Page 174: ... board failure Check the coil connections Check for coil burnout Check that the voltage across TB21 and TB22 on the noise filter board is 414V or above 3 Wiring failure Confirm that the voltage at the control board connector CNAC is 190 V or above If the voltage is below 190 check the wiring between noise filter CN6 noise filter CN2 transformer box and control board CNAC Confirm that the wiring be...

Page 175: ...ailure 4 Check method and remedy Check the items in IX 4 7 2 Troubleshooting transmission power circuit of outdoor unit on all outdoor units in the same refrigerant circuit Transmission power supply fault other than error detail code FF Outdoor unit 2 Error definition and error detection method Transmission power reception failure 3 Cause One of the outdoor units stopped supplying power but no oth...

Page 176: ... and control board CNAC Confirm that the voltage at the control board con nector CNAC is 188 V or above 5 Control board failure If none of the items described above is applicable and if the trouble reappears even after the power is switched on again replace the control board 4115 YHMU A Cause Check method and remedy 1 Power supply error Check the voltage of the power supply terminal block TB1 2 No...

Page 177: ...ay is ON Only for the three phase model Indoor unit If detected less than 180rpm or more than 2000rpm the indoor unit will restart and keep running for 3 minutes If detected again the display will appear 3 Cause check method and remedy 4116 Cause Check method and remedy 1 Board failure Replace the board 2 Motor malfunction Check for the motor and the solenoid switch 3 Solenoid switch malfunction ...

Page 178: ... if it is 253V or above 1 Confirm on the LED monitor that the bus voltage is above 160 V Replace the INV board if it is below 160 V 2 Check the voltage at CN505 on the control board Go to 3 3 Check the coil connections L1 L3 and coil burnout 4 Check the resistance of the diode stack Refer to 4 6 6 page 251 5 Check the wiring connections between the following sections Between the noise filter board...

Page 179: ...han 420 V check the following items 1 Check the coil connections and for coil burnout on the noise filter 2 Check the wiring between the noise filter board and INV board 3 Check the connection to SCP1 and SC P2 on the INV board 4 Check the in rush current resistor value 5 Check the 72C resistance value 6 Check the DCL resistance value Replace the INV board if no problems are found 4225 Check the v...

Page 180: ... THMU A under part 4 Troubleshooting Principal Parts for error codes related to the inverter page 244 1 Error Code Abnormal bus voltage rise Detail code 109 2 Error definition and error detection method If Vdc 830V is detected during inverter operation 3 Cause check method and remedy 1 Different voltage connection Check the power supply voltage on the power supply terminal block TB1 2 INV board fa...

Page 181: ...ethod Bus voltage abnormality If Vdc 400V or Vdc 160V is detected H W detection 3 Cause check method and remedy Same as detail code No 108 and 109 of 4220 error Refer to section 6 Inverter THMU A under part 4 Troubleshooting Principal Parts for error codes related to the inverter page 244 4220 4225 THMU A P120 model ...

Page 182: ... of 4220 In the case of 4225 Refer to section 6 Inverter THMU A under part 4 Troubleshooting Principal Parts for error codes related to the inverter page 244 4220 4225 THMU A Cause Check method and remedy 1 External noise 2 INV board failure Refer to IX 4 6 2 1 page 246 3 IPM failure P120 model only Replace the IPM 4 DCCT failure P120 model only Replace the DCCT Cause Check method and remedy 1 Ext...

Page 183: ... Error Code Low bus voltage at startup Detail code 131 2 Error definition and error detection method When Vdc 160 V is detected just before the inverter operation 3 Cause check method and remedy 1 Inverter main circuit failure Same as detail code 108 of 4220 error Refer to section 6 Inverter YHMU A under part 4 Troubleshooting Principal Parts for error codes related to the inverter page 252 4220 4...

Page 184: ...ure Refer to IX 4 6 2 6 page 247 2 Outdoor unit fan failure Check the outdoor unit fan operation If any problem is found with the fan operation check the fan motor Refer to IX 4 6 2 5 page 247 3 Air passage blockage Check that the heat sink cooling air passage is not blocked 4 THHS failure P72 and P96 models 1 Check for proper installation of the INV board IGBT Check for proper instal lation of th...

Page 185: ... 252 4230 YHMU A Cause Check method and remedy 1 Fan board failure Refer to IX 4 6 2 6 page 255 2 Outdoor unit fan failure Check the outdoor unit fan operation If any problem is found with the fan operation check the fan motor Refer to IX 4 6 2 5 page 255 3 Air passage blockage Check that the heat sink cooling air passage is not blocked 4 THHS failure 1 Check for proper installation of the INV boa...

Page 186: ...d to the inverter page 244 4240 THMU A Model Imax Arms P72 P96 models 35 P120 model 53 Model TOL P72 P96 models 95 C 203 F P120 model 80 C 175 F Cause Check method and remedy 1 Air passage blockage Check that the heat sink cooling air passage is not blocked 2 Power supply environment Power supply voltage is 188 V or above 3 Inverter failure Refer to IX 4 6 page 244 4 Current sensor ACCT failure Re...

Page 187: ...4 Troubleshooting Principal Parts for error codes related to the inverter page 252 4240 YHMU A Model Imax Arms P72 P96 models 19 P120 model 27 Cause Check method and remedy 1 Air passage blockage Check that the heat sink cooling air passage is not blocked 2 Power supply environment Power supply voltage is 414 V or above 3 Inverter failure Refer to IX 4 6 page 252 4 Compressor failure Check that th...

Page 188: ...In the case of 4250 P72 and P96 models P120 model In the case of 4255 Refer to section 6 Inverter THMU A under part 4 Troubleshooting Principal Parts for error codes related to the inverter page 244 4250 4255 THMU A Cause Check method and remedy 1 Inverter output related Refer to IX 4 6 2 1 4 page 246 Cause Check method and remedy 1 Inverter output related Refer to IX 4 6 2 1 4 page 246 2 Same as ...

Page 189: ...of 4250 In the case of 4255 Refer to section 6 Inverter YHMU A under part 4 Troubleshooting Principal Parts for error codes related to the inverter page 252 4250 4255 YHMU A Cause Check method and remedy 1 Inverter output related Refer to IX 4 6 2 1 4 page 254 Check the IGBT module resistance value of the INV board if no problems are found Refer to the Trouble shooting for IGBT module Cause Check ...

Page 190: ...n method P76 and P96 models Overcurrent 88 Apeak or 42 Arms and above is detected by the current sensor P120 model Overcurrent 128 Apeak or 60 Arms and above is detected by the current sensor 3 Cause check method and remedy Refer to section 6 Inverter THMU A under part 4 Troubleshooting Principal Parts for error codes related to the inverter page 244 4250 THMU A Cause Check method and remedy 1 Inv...

Page 191: ...error detection method When IPM IGBT short damage or grounding on the load side is detected just before starting the inverter 3 Cause check method and remedy In the case of 4250 In the case of 4255 Refer to section 6 Inverter under part 4 Troubleshooting Principal Parts for error codes related to the inverter 4250 YHMU A Cause Check method and remedy 1 Inverter output related Refer to IX 4 6 2 1 4...

Page 192: ... heatsink temperature THHS remains at or above TOH for 10 minutes or more at inverter startup 3 Cause check method and remedy Same as 4230 error 1 Error Code Heatsink overheat protection at startup 2 Error definition and error detection method The heatsink temperature THHS remains at or above 100 C 212 F for 10 minutes or more at inverter startup 3 Cause check method and remedy Same as 4230 error ...

Page 193: ...for 3 minutes When the error is not restored after 3 minutes if restored the outdoor unit runs normally the outdoor unit makes an error stop Short detectable at 90 C 194 F or higher Open detectable at 40 C 40 F or lower Sensor error at gas side cannot be detected under the following conditions During heating operation During cooling operation for 3 minutes after the compressor turns on 3 Cause che...

Page 194: ... is detected just before the restart of the outdoor unit the outdoor unit makes an error stop and the error code 5102 5103 5104 5105 5106 or 5107 will appear During 3 minute antirestart mode preliminary errors will be displayed on the LED display A short or an open described above is not detected for 10 minutes after the compressor start during defrost mode or for 3 minutes after defrost mode 3 Ca...

Page 195: ...tion 6 Inverter THMU A under part 4 Troubleshooting Principal Parts for error codes related to the inverter page 244 5110 THMU A P120 model only Cause Check method and remedy 1 INV board failure If the problem recurs when the unit is put into operation replace the INV board Cause Check method and remedy 1 THHS sensor failure Check the THHS sensor reading on the LED monitor Replace the sensor if it...

Page 196: ...Pa 14psi or more If the high pressure sensor detects 0 098MPa 14psi or less just before the restart the outdoor unit makes an error stop and the error code 5201 will appear During 3 minute antirestart mode preliminary errors will be displayed on the LED display A error is not detected for 3 minutes after the compressor start during defrost operation or 3 minutes after defrost operation 3 Cause che...

Page 197: ... error codes related to the inverter page 244 5301 THMU A Cause Check method and remedy 1 Inverter open output phase Check the output wiring connections 2 Compressor failure Refer to IX 4 6 2 2 page 246 3 INV board failure Refer to IX 4 6 2 1 3 4 page 246 Cause Check method and remedy 1 Inverter open output phase Check the output wiring connections 2 Compressor failure Refer to IX 4 6 2 2 page 246...

Page 198: ...lt Detail code 117 2 Error definition and error detection method When an error value is detected with the ACCT detection circuit just before the inverter starts 3 Cause check method and remedy Refer to section 6 Inverter under part 4 Troubleshooting Principal Parts for error codes related to the inverter 5301 YHMU A Cause Check method and remedy 1 Inverter open output phase Check the output wiring...

Page 199: ... the inverter page 244 5301 THMU A P120 model only Cause Check method and remedy 1 Contact failure Check for good contact of the INV board connector CNCT and the connec tor on the DCCT side 2 INV board failure Refer to IX 4 6 2 1 3 4 page 246 3 DCCT sensor failure Replace the DCCT sensor 4 Compressor failure Refer to IX 4 6 2 2 page 246 5 Inverter failure Refer to IX 4 6 page 244 5301 THMU A Cause...

Page 200: ...hooting Principal Parts for error codes related to the inverter page 244 5301 YHMU A Cause Check method and remedy 1 Inverter output wiring problem Check output wiring connections Confirm that the U and W phase output cables are put through CT12 and CT22 on the INV board respectively 2 Inverter failure Refer to IX 4 6 2 3 4 page 255 3 Compressor failure Refer to IX 4 6 2 2 page 254 5301 THMU A Cau...

Page 201: ...ethod and remedy Refer to section 6 Inverter YHMU A under part 4 Troubleshooting Principal Parts for error codes related to the inverter page 252 5301 YHMU A Cause Check method and remedy 1 Inverter output wiring problem Check output wiring connections Confirm that the U and W phase output cables are put through CT12 and CT22 on the INV board respectively 2 Inverter failure Refer to IX 4 6 2 3 4 p...

Page 202: ... fault nonvolatile memory error 2 Error definition and error detection method This error is detected when the data cannot be read out from the built in nonvolatile memory on the remote controller 3 Cause check method and remedy 1 Remote controller failure Replace the remote controller 1 Error Code Remote controller board fault clock IC error 2 Error definition and error detection method This error...

Page 203: ...or more of the following have the same address Outdoor units indoor units LOSSNAY units control lers such as M NET remote controllers Example 6600 01 appears on the remote controller Unit 01 detected the error Two or more units in the system have 01 as their ad dress Find the unit that has the same address as that of the error source Once the unit is found correct the address Then turn off the out...

Page 204: ...ts connected to different outdoor units or in case of the system connected with MELANS 4 Check method and remedy 6602 NO Tightly reconnect the male power supply connector to the female power supply switch connector CN40 YES YES YES YES YES YES NO NO NO NO Is the transmission line work performed while the power is on Check the power source of the indoor unit 188 253V Check the transmission line wor...

Page 205: ...on the display on the remote controller indicates the controller where an error oc curred 3 Cause check method and remedy 6603 Cause Check method and remedy 1 The transmission processor cannot be transmit ted as the short wavelength voltage like noise ex ists consecutively on the transmission line No noise indicates that the error source controller is a fail ure If noise exists investigate the noi...

Page 206: ...A remote controller MA No acknowl edgement ACK at RC transmis sion to IC 1 When IC unit address is changed or modified during operation Turn off the outdoor indoor units for 5 or more minutes and turn them on again If the error is accidental they will run normally If not check the causes 1 5 2 Faulty or disconnected IC trans mission wiring 3 Disconnected IC connector CN2M 4 Indoor unit controller ...

Page 207: ...wer sources of the outdoor and indoor units for 5 or more minutes and turn them on again If the error is accidental the will run normal ly If not check the cause 2 2 Disconnection or short circuit of the transmission line for the outdoor unit on the termi nal block for centralized con trol line connection TB7 2 Check the causes of 1 5 If the cause is found correct it If no cause is found check 3 3...

Page 208: ...ts that are connect ed to different outdoor units 1 Turn off the power source of LOSSNAY for 5 or more min utes and turn it on again If the error is accidental it will run normally If not check the cause 2 2 Disconnection or short circuit of the transmission line for the outdoor unit on the termi nal block for centralized con trol line connection TB7 2 Check the causes of 1 5 If the cause is found...

Page 209: ... of LOSSNAY for 5 or more min utes and turn it on again If the error is accidental it will run normally If not check the cause 2 2 Disconnection or short circuit of the transmission line for the outdoor unit on the termi nal block for centralized con trol line connection TB7 2 Check the causes of 1 5 If the cause is found correct it If no cause is found check 3 3 When multiple outdoor units are co...

Page 210: ...l ler SC No acknowl edgement ACK at SC transmis sion to IC 1 Error occurrence on some IC Same remedy as that for system with one outdoor unit 1 Same cause as that for system with one outdoor unit 2 Error occurrence on all IC in the system with one outdoor unit 1 Check the LED display for troubleshooting on the outdoor unit 1 Total capacity error 7100 If an error is found check the check code defin...

Page 211: ...e IC Same remedy as that for system with one outdoor unit 1 Same cause as that for system with one outdoor unit 2 Error occurrence on all IC in the system with one outdoor unit 1 Check the LED display for troubleshooting on the out door unit 1 An error is found by the outdoor unit Total capacity error 7100 Capacity code error 7101 Error in the number of connected units 7102 Address setting error 7...

Page 212: ...roller 3 M NET remote controller failure 2 Error occurrence on all IC in the system with one outdoor unit 1 Check the LED display for troubleshooting on the out door unit 1 An error is found by the outdoor unit Total capacity error 7100 Capacity code error 7101 Error in the number of connected units 7102 Address setting error 7105 If an error is found check the check code definition and correct th...

Page 213: ...h some indoor units have Use either of the following two methods for deletion 2 Although the address of LOSSNAY has been changed after the interlock registration of LOSSNAY is made using M NET remote controller the in door unit is keeping the mem ory of the previous address 1 Address deletion by M NET re mote controller Delete unnecessary address in formation using the manual set ting function of ...

Page 214: ... line voltage signal by exceeding acceptable range of transmission wiring Farthest 200m 656ft or less Remote controller wiring 12m 39ft or less 4 The transmission line voltage signal is decreased due to erroneous sizing of transmission line Wire diameter 1 25mm2 AWG16 or more 4 Check method and remedy 1 When an error occurs during commissioning turn off the power sources for the outdoor unit indoo...

Page 215: ...signals from the remote controller 4 Check method and remedy 1 Check for disconnected or loose transmission lines for the indoor units or MA remote controllers 2 Confirm that the power is supplied to the main power source and the remote controller line 3 Confirm that MA remote controller s capacity limit is not exceeded 4 Check the sub main setting of the MA remote controllers One of them must be ...

Page 216: ...Check for disconnected or loose transmission lines for the indoor units or MA remote controllers 2 Confirm that the power is supplied to the main power source and the remote controller line 3 Confirm that MA remote controller s capacity limit is not exceeded 4 Check the sub main setting of the MA remote controllers One of them must be set to MAIN 5 Diagnose the remote controller described in the r...

Page 217: ...r disconnected or loose transmission lines for the indoor units or MA remote controllers 2 Confirm that the power is supplied to the main power source and the remote controller line 3 Confirm that MA remote controller s capacity limit is not exceeded 4 Check the sub main setting of the MA remote controllers One of them must be set to MAIN 5 Diagnose the remote controller described in the remote co...

Page 218: ...he signals from the remote controller 4 Check method and remedy 1 Check for disconnected or loose transmission lines for the indoor units or MA remote controllers 2 Confirm that the power is supplied to the main power source and the remote controller line 3 Confirm that MA remote controller s capacity limit is not exceeded 4 Check the sub main setting of the MA remote controllers One of them must ...

Page 219: ...is differ ent from that of the unit connected turn off the power source of the outdoor and the indoor units and change the setting of the model name ca pacity code 2 The model selection switches SW5 1 5 4 on the outdoor unit are set incorrectly Check the setting for the model selection switch on the outdoor unit Dipswitches SW5 1 5 4 on the outdoor unit control board 3 The outdoor unit and the aux...

Page 220: ...address set by the switch SW2 on indoor unit board When the model name set by the switch is different from that of the unit connected turn off the power source of the outdoor and the indoor units and change the setting of the capacity code The capacity of the indoor unit can be confirmed by the self diagnosis function SW1 operation of the outdoor unit Outdoor unit 2 The model selection switches SW...

Page 221: ...eck whether the transmission line for the terminal block for cen tralized control TB7 is not con nected to the terminal block for the indoor outdoor transmission line TB3 M NET remote controller Nothing appears on the remote controller be cause it is not powered MA remote controller HO or PLEASE WAIT blinks 4 The model selection switch SW5 7 on the out door unit is set to OFF Normally set to ON 4 ...

Page 222: ...00 Check that the address of OC unit is set to 51 100 Reset the address if it stays out of the range while shutting the power source off 7106 Error source Cause Check method and remedy A remote controller for use with indoor units such as the MA remote controller is connected to the OA processing unit whose attribute is FU To operate the OA processing unit directly via a re mote controller for use...

Page 223: ...y the booster being connected to the switch on the indoor unit The unit will not function properly unless the transmission booster is turned on 2 Power resetting of the transmission booster and outdoor unit Reset the power to the outdoor unit 3 Wiring failure between OC and OS 2 Confirm that the TB3 on the OC and OS are properly connected 4 Broken wire between OC and OS 3 Check the model selection...

Page 224: ...eck the connector CNTYP4 on the control board for proper connection 4 Check the settings of SW5 1 through SW5 4 on the control board Detail code 16 1 Check the connector CNTYP on the INV board for proper connection 2 Check the connector CNTYP5 on the control board for proper connection 3 Check the connector CNTYP4 on the control board for proper connection 4 Check the settings of SW5 1 through SW5...

Page 225: ...V board for proper connection 2 Check the connector CNTYP5 on the control board for proper connection 3 Check the connector CNTYP4 on the control board for proper connection 4 Check the wiring between the control board and INV board Refer to the section on Error code 0403 Detail code 00 01 05 1 Check the wiring between the control board and INV board Refer to the section on Error code 0403 2 Check...

Page 226: ...ource Cause Check method and remedy Outdoor unit The connected indoor unit is for use with R22 or R407C Incorrect type of indoor units are connected The M NET connection adapter is connected to the indoor unit system in a system in which the Slim Model A control of units are con nected to the M NET Check the connected indoor unit model Check whether the connecting adapter for M NET is not connecte...

Page 227: ... of the wire for the MA remote controller and the M NET transmission line on the indoor unit 3 The number of the MA remote controllers that are connected to an indoor unit exceeds the allowable range 2 units 4 The length or the diameter of the wire for the MA remote controller are out of specification 5 Short circuit of the wire for the remote display output of the outdoor unit or reversed polarit...

Page 228: ... power supply unit for transmission lines is connected the male power supply connector is connect ed to the female power supply switch connector CN40 on the outdoor unit 4 Disconnected M NET transmission line on the indoor unit side 5 Disconnected wire between the terminal block for M NET line TB5 of the indoor unit and the indoor unit board CN2M or disconnected connector 2 Check method and remedy...

Page 229: ...ircuited wire for the MA remote controller Disconnected wire for the MA remote controller No 2 and disconnected line to the terminal block Reversed daisy chain connection between groups Incorrect wiring for the MA remote controller to the terminal block for transmission line connection TB5 on the indoor unit The M NET transmission line is connected incorrectly to the terminal block TB13 for the MA...

Page 230: ... indoor unit power failure All the indoor unit power failure Error display Error display Thermo is OFF Is operation possible Short circuit of the remote controller After turning the power on check whether HO PLEASE WAIT is displayed on the remote controller After more than 20 seconds since turning the power on is LED2 check of the indoor control board still displayed Is the operation by MELANS for...

Page 231: ...onnected line to the terminal block The indoor transmission line is connected incorrectly to the transmission terminal block for centralized controller TB7 4 Disconnected transmission line on the remote controller 5 Remote controller failure 6 Outdoor unit failure Refer to 9 7 Troubleshooting Using the Outdoor Unit LED Error Display page 269 2 Check method and remedy 1 Check voltage of the transmi...

Page 232: ... indoor unit control board Is it lit When it is lit When it is off or cannot be checked Check for the change of LED display by operating dip switch SW1 for self diagnosis Check voltage of the power supply terminal on the indoor unit AC208 230V Check the fuse on the circuit board Melted Check 200V circuit for short circuit and ground fault Check the connection of the connector Check the main power ...

Page 233: ...rol TB7 of the outdoor unit 3 The male power supply connector is connected to CN40 on more than one outdoor unit or the connector is connected to CN40 on the outdoor unit in the system to which a power supply unit for transmission line is connected Using MELANS 1 When MELANS is used HO display on the remote controller will disappear when the indoor unit and the local remote con troller M NET remot...

Page 234: ... are grouped 6 The power of the outdoor unit to be confirmed has been cut off 5 Check the power supply of the outdoor unit which is coupled with the unit to be confirmed 7 Transmission line is disconnected from the terminal block for central control system connection TB7 on the outdoor unit 6 Check that the transmission line for centralized control TB7 of the outdoor unit is not disconnect ed 8 Wh...

Page 235: ...em causes insufficient capacity SW1 setting Note Protection works and compressor frequency does not rise even at higher Te than Tem due to high dis charge temperature and high pressure At high discharge temperature Refer to 1102 page 154 At high pressure Refer to 1302 page 156 2 Indoor unit LEV malfunction Refer to the page of LEV troubleshooting 4 5 page 238 Insufficient refrigerant flows due to ...

Page 236: ...the foreign object may clog the pipe Remove the foreign object inside the pipe 8 The indoor unit inlet temperature is excessively Less than 15 C 59 F WB Check the inlet air temperature and for short cy cling Change the environment where the indoor unit is used 9 Compressor failure The amount of circulating refrigerant decreases due to refrigerant leak in the compressor Check the discharge temperat...

Page 237: ...ck the pressure sensor Refer to the page on Trouble shooting of Pressure Sensor Note Higher inlet pressure by the high pressure sensor than the actual pressure causes insufficient capac ity SW1 setting 2 Check the difference between the condensing tem perature Tc and the target condensing tempera ture Tcm with self diagnosis LED Note Higher Tc than Tcm causes insufficient capacity SW1 setting Note...

Page 238: ...hange the pipe 7 Piping size is not proper thin 8 Clogging by foreign object Check the temperature difference between the up stream and the downstream of the pipe section that is blocked Since blockage in the extended section is difficult to locate operate the unit in the cooling cycle and follow the same procedures that are used to locate the blockage of pipe during cooling operation Remove the b...

Page 239: ...y with SW1 Refer to the reference page for each error mode 1 Abnormal high pressure 2 Abnormal discharge air temperature 3 Heatsink thermistor failure Display the indoor piping temperature table with SW1 to check whether the freeze proof operation runs properly and check the temperature 4 Thermistor failure 5 Pressure sensor failure 6 Over current break 7 Refrigerant overcharge Note1 Frost prevent...

Page 240: ...nded 2 The sectional voltage level of transmission signal should be as follows Cause Erroneous operation Error code Error code definition Noise interference on the transmission line Signal is transformed and will be misjudged as the signal of another address 6600 Address overlap Transmission wave pattern is transformed due to the noise creating a new signal 6602 Transmission pro cessor hardware er...

Page 241: ...n line can not escape leading to change of the transmission signal 6 Check the treatment meth od of the shield of the transmission line for cen tralized control The transmission cable for centralized control is less subject to noise interference if it is grounded to the outdoor unit whose power jumper cable was moved from CN41 to CN40 or to the power sup ply unit The environment against noise vari...

Page 242: ...ation between the MA remote controller and the indoor unit is interrupted for 3 minutes in a row MA transmission error 6831 will occur 2 Confirmation of transmission specifications and wave pattern A B No polarity Across terminal No 1 2 Power supply 9V to 12VDC Satisfies the formula 12 msec bit 5 Voltage among terminals must be between DC9 and 12 V TB15 A B 1 2 MA remote controller Transmission wa...

Page 243: ...high pressure sensor has a problem 3 Remove the high pressure sensor from the control board to check the pressure on the self diagnosis LED1 1 When the pressure displayed on self diagnosis LED1 is between 0 and 0 098MPa 14psi the high pressure sensor has a problem 2 When the pressure displayed on self diagnosis LED1 is approximately 4 15MPa 601psi the control board has a problem 4 Remove the high ...

Page 244: ...a problem 2 When the pressure displayed on self diagnosis LED1 is approximately 1 7MPa 247psi the control board has a problem When the outdoor temperature is 30 C 86 F or less the control board has a problem When the outdoor temperature exceeds 30 C 86 F go to 5 4 Remove the low pressure sensor from the control board and short circuit between the No 2 and 3 connectors 63LS CN202 to check the press...

Page 245: ...ve has no faults and the electricity runs between where and where Do not touch the pipe when checking the temperature as the pipe on the oil separator side will be hot Do not give an impact from outside as the outer hull will be deformed leading to the malfunction of the inner valve 2 In case of 21S4b 4 way switching valve 21S4c 4 way switching valve only for P120 model About this 4 way valve When...

Page 246: ...nd If this is the case the temperature before and after SV5b or SV5c can be used to determine if the refrigerant is the pipe 5 In the case of SV9 Solenoid valve This solenoid valve is a switching valve that opens when energized Proper operation of this valve can be checked on the LED display and by the switching sound Do not give an impact from outside as the outer hull will be deformed leading to...

Page 247: ...Red Orange White Brown Blue Yellow 6 5 4 4 3 2 1 3 2 1 4 3 2 1 Output state Output phase number 1 2 3 4 1 ON OFF OFF ON 2 ON ON OFF OFF 3 OFF ON ON OFF 4 OFF OFF ON ON Output pulses change in the following orders when the Valve is closed 1 2 3 4 1 Valve is open 4 3 2 1 4 1 When the LEV opening angle does not change all the output phases will be off 2 When the output is open phase or remains ON the...

Page 248: ...1 8 1 When the LEV opening angle does not change all the output phases will be off 2 When the output is open phase or remains ON the motor cannot run smoothly and rattles and vibrates Output phase number Output state When the power is turned on the valve closing signal of 520 pulses will be output from the indoor board to LEV to fix the valve position It must be fixed at point A Pulse signal is ou...

Page 249: ...blue using a tester They are normal if resistance is 150ohm 10 Replace the LEV coils Indoor Outdoor LEV2a LEV2b Measure resistance between the coils red white red orange brown yellow brown blue using a tester They are normal if resistance is 46ohm 3 Replace the LEV coils Outdoor LEV1 Incomple sealing leak from the valve When checking the refrigerant leak from the indoor LEV run the target indoor u...

Page 250: ...he body gripped undue force will be applied and the pipe will be bent 3 Installing the coils Fix the body tightly at the bottom Part A in the figure so that the body will not move then insert the coils from the top and insert the coil stopper securely in the pipe on the body Hold the body when pulling out the coils to prevent so that the pipe will not be bent If the coils are pushed without the bo...

Page 251: ... not use motors if dropped 3 Do not remove the cap until immediately before the procedure 4 Do not wipe off any molybdenum 5 Do not remove the packing 6 Do not apply any other than specified liquid such as screw lock agent grease and etc Motor Driver Locknut Valve assembling Valve body side Orifice Bellows Refrigerant Circuit Motor Packing Cap Molybdenum ...

Page 252: ... precisely Apply screw lock agent to whole part of the screw Do not introduce screw lock agent into the motor Use new motors if problems are found on the motor during the replacement 7 After rotating the locknut 2 3 times by hands hold the valve body with the spanner and tighten the locknut with the specified torque with a torque wrench Apply the tightening torque of 15N m 150kgf cm administration...

Page 253: ...r wait for 5 to 10 minutes and confirm that the voltage at both ends of the electrolytic capacitor has dropped to a sufficiently low level 2 The IPM on the inverter becomes damaged if there are loose screws are connectors If a problem occurs after replacing some of the parts mixed up wiring is often the cause of the problem Check for proper connection of the wiring screws connectors and Faston ter...

Page 254: ...eck the inverter frequency on the LED monitor and proceed to 2 6 if the fan motor is in operation 8 Noise is picked up by the peripheral device 1 Check that power supply wiring of the peripheral device does not run close to the power supply wiring of the outdoor unit 2 Check that the inverter output wiring is not in close contact with the power supply wiring and the transmission lines 3 Check that...

Page 255: ... of the IPM 2 Logic error Error code 4220 Detail code No 111 See the section Troubleshooting the IPM Refer to 6 5 Replace the IPM and put the out door unit back into operation If the problem persists replace the INV board Replace the INV board and put the outdoor unit back into opera tion If the problem persists replace the DCCT 2 Put the outdoor unit into operation 3 ACCT sensor circuit failure E...

Page 256: ... the INV board 3 Put the outdoor unit into operation 4 There is no voltage imbalance be tween the wires Normal Turn off SW1 1 4 Check whether the inverter is damaged During com pressor opera tion Put the outdoor unit into oper ation Check the inverter output volt age after the inverter output frequency has stabilized 1 There is an voltage imbalance be tween the wires Greater than 5 imbalance or 5V...

Page 257: ...rcuit Diode stack IPM Rush current protection resistor Electromagnetic relay DC reactor 2 Turn on the power again and check again 1 Main power breaker trip 2 No remote control display 3 Turn on the outdoor unit and check that it operates normally 1 Operates normally without tripping the main breaker a The wiring may have been short circuited Search for the wire that short circuited and repair it b...

Page 258: ...red with a tester Check only for shorting DC reactor DCL Measure the resistance between terminals 1ohm or lower almost 0 ohm Measure the resistance between terminals and the chassis Current sensor ACCT P120 model Disconnect the CNCT2 connector and measure the resistance between terminals 280 ohm 30 ohm 1 2 PIN U phase 3 4 PIN W phase Check point Row A Not to be short circuited Row B to Row E Insta...

Page 259: ...nt is not allowed 2 Tester restriction Use the tester whose internal electrical power source is 1 5V or greater Use the dry battery powered tester The accurate diode specific resistance cannot be measured with the button battery powered card tester as the applied volt age is low Use a low range tester if possible A more accurate resistance can be measured Judgment value reference Black P N U V W R...

Page 260: ...a tester and use the results for troubleshoot ing Refer to 5 Intelligent power module IPM for notes on measurement and tester selection Judgment value reference Black External view P N to L1 to L2 to L3 Red P 5 200 ohm 5 200 ohm 5 200 ohm N to L1 5 200 ohm Internal circuit diagram to L2 5 200 ohm to L3 5 200 ohm L1 L2 L3 L1 L2 L3 THMU A ...

Page 261: ...s 20V or below before checking inside the control box It takes about 10 minutes to discharge electricity after the power supply is turn off 2 The IPM on the inverter becomes damaged if there are loose screws are connectors If a problem occurs after replacing some of the parts mixed up wiring is often the cause of the problem Check for proper connection of the wiring screws connectors and Faston te...

Page 262: ...n 8 Noise is picked up by the peripheral device 1 Check that power supply wiring of the peripheral device does not run close to the power supply wiring of the outdoor unit 2 Check if the inverter output wiring is not running parallel to the power supply wiring and the transmission lines 3 Check that the shielded wire is used as the transmission line when it is required and check that the grounding...

Page 263: ... 111 Replace the INV board 3 ACCT sensor circuit failure Error code 5301 Detail code No 117 Replace the INV board 4 IPM open Error code 5301 Detail code No 119 Normal 2 Check for compressor ground fault or coil error Disconnect the compressor wiring and check the com pressor Meg and coil resis tance 1 Compressor Meg failure Error if less than 1 Mohm Check that there is no liquid re frigerant in th...

Page 264: ...into oper ation Check the inverter output volt age after the inverter output frequency has stabilized 1 There is an voltage imbalance be tween the wires Greater than 5 imbalance or 5V Replace the INV board 5 Check the fan motor ground fault or the winding Remove the wire for the out door fan motor and check the fan motor megger and the winding resistance 1 Fan motor megger failure Failure when the...

Page 265: ... Procedures for individual components of main inverter circuit IGBT module Rush current protection resistor Electromagnetic relay DC reactor 3 Turn on the power again and check again 1 Main power breaker trip 2 No remote control display 4 Turn on the outdoor unit and check that it operates normally 1 Operates normally without tripping the main breaker a The wiring may have been short circuit ed Se...

Page 266: ...Disconnect all the wiring connected the INV board and make the measurement 2 Tester restriction Use the tester whose internal electrical power source is 1 5V or greater Use the dry battery powered tester The accurate diode specific resistance cannot be measured with the button battery powered card tester as the applied volt age is low Use a low range tester if possible A more accurate resistance c...

Page 267: ... P1 FT N SC L1 SC L2 SC L3 Red SC P1 5 200 ohm 5 200 ohm 5 200 ohm FT N SC L1 5 200 ohm SC L2 5 200 ohm SC L3 5 200 ohm Black SC P2 FT N SC U SC V SC W Red SC P2 5 200 ohm 5 200 ohm 5 200 ohm FT N SC U 5 200 ohm SC V 5 200 ohm SC W 5 200 ohm SC U SC W SC V FT N SC P1 SC P2 SC L1 SC L2 SC L3 YHMU A ...

Page 268: ...minal block for transmission line connection DC 17 30 V AC 208 230 V Terminal block for power source TB1 Noise filter Noise filter Fuse Fuse Fuse LEV Fuse Surge protection INV board Control board Fan board 63H1 72C DCL DC DC converter Detection circuit for the power supply to the transmission line M NET board DC DC converter Microcomputer Microcomputer Microcomputer 5 V Power supply 18VPowersupply...

Page 269: ...tor 15V Power supply Inverter drive circuit Microcomputer 5 V Power supply 12 V Power supply DC DC converter Fuse Inverter Compressor Heat exchanger fan Fuse Fan board Microcomputer 5 V Power supply Inverter Inverter drive circuit Outdoor unit Power source system AC 208 230 V Control system DC 5 30 V 63H1 Inverter reset circuit DC DC converter Microcomputer 5 V Power supply 18 V Power supply Fuse ...

Page 270: ...connector disconnection Check for shorted transmission line for centralized control Replace the control board Check the voltage between No 1 and No 2 pins of the CN102 on the power supply board for the transmission line Check the voltage between No 1 and No 3 pins of the CNDC on the INV board Check the voltage between SC P1 and TB N on the INV board Check the voltages among SC R SC S and SC T on t...

Page 271: ...oper connection of connectors Fix the wiring and connector disconnection Check for shorted transmission line for centralized control YES Is there a wiring error or a connector disconnection Replace the control board Check the wiring between the control board and power supply board for the transmission line CN102 and CNIT and check for proper connection of connectors Check the voltage between No 5 ...

Page 272: ... 460V Terminal block for power source TB1 Noise filter Noise filter Fuse Fuse Fuse 72C LEV Fuse Surge protection INV board Control board Fan board 63H1 72C DCL DC DC converter Detection circuit for the power supply to the transmission line M NET board DC DC converter Microcomputer Microcomputer Microcomputer 5 V Power supply 18VPowersupply 12V Power supply 30 V Power supply Relay drive circuit Rel...

Page 273: ...s found Replace the noise filter Replace the noise filter Replace the M NET board Connect the noise filter CN4 and then turn the power on Replace the control board Replace the noise filter Replace the noise filter Replace the control board Fuse F4 on the noise filter board is blown Fuse F4 on the noise filter board is blown Disconnect the noise filters CN4 and CN5 and then replace fuse F4 on the n...

Page 274: ...nside the system repair the leak perform evacuation and recharge new refrigerant Leak spot 4 In the case of outdoor unit handle in the same way as heat ing season 3 Stop all the indoor units and stop the compressor 1 To stop all the indoor units and the compressors turn SW3 2 from ON to OFF when SW3 1 on the outdoor control board is ON 2 Check that all the indoor units are being stopped 4 Close th...

Page 275: ...extension pipe for the indoor unit and open the service valves BV1 and BV2 to adjust refrigerant 4 Leak spot In the case of outdoor unit Heating season 1 Collect the refrigerant in the entire system outdoor unit extended pipe and indoor unit Do not discharge refrigerant into the atmosphere when it is collected In the cooling cycle the section between check valve CV1 and LEV 2a b will form a closed...

Page 276: ...hem in the reverse order after replacing the compressor Compressor replacement procedures 1 Remove both the top and bottom service panels front panels 3 Remove the wires that are secured to the frame and remove the frame Electric wiring Frame Service panel Control box Compressor cover front 2 Remove the control box and the compressor cover front 1 Remove the transformer box from the P72 P96 and P1...

Page 277: ... material Suction piping Protection for the compressor cover 6 Place protective materials on the insulation lining of the compressor cover and on the sealing material on the compressor suction pipe to protect them from the torch flame debraze the pipe and replace the compressor Crankcase heater Compressor covers right and left The inside of the compressor cover is lined with sound insulation mater...

Page 278: ...sconnected there is a problem with the wiring to those connectors or with the connectors themselves 3 If nothing appears on the display under item 2 above AND the voltage between pins 1 and 3 of CNDC is within the range between 220 VDC and 380 VDC control board failure is suspected 3 Only the software version appears on the LED display 1 Only the software version appears while the transmission cab...

Page 279: ... 270 ...

Page 280: ... 271 HWE0804A GB X LED Monitor Display on the Outdoor Unit Board 1 How to Read the LED on the Service Monitor 273 ...

Page 281: ... 272 ...

Page 282: ...s can be checked by making the switch setting that corresponds to No 517 in the LED display table Only item No 1 Software Version appears on the display if there is a wiring failure between the control board and the trans mission line power supply board or if the circuit board has failed 1 Display of numerical values Example When the pressure data sensor reads 18 8kg cm2 Item No 58 The unit of pre...

Page 283: ...er is turned off and then on again the count will resume from the time before the power was turned off Thus the time that differs the actual time will be displayed This also applies when a power failure occurs The system controller such as G B 50A adjusts the time once a day When the system controller is connected the time will be automatically updated to the correct current time after the time se...

Page 284: ...ding IC and BC 0000 to 9999 Address and error codes highlighted B If no errors are detected appears on the dis play 3 1100000000 Relay out put display 2 Top 21S4a CH11 SV1a A A Bottom 21S4b SV5b 4 0010000000 Relay out put display 3 Top SV5c 21S4c SV9 Power sup ply for indoor transmis sion line A A Bottom 5 1010000000 6 0110000000 7 1110000000 Special control Retry opera tion Emergency operation Co...

Page 285: ...nit No 23 Unit No 24 Bottom Unit No 25 Unit No 26 Unit No 27 Unit No 28 Unit No 29 Unit No 30 Unit No 31 Unit No 32 18 0100100000 Top Unit No 33 Unit No 34 Unit No 35 Unit No 36 Unit No 37 Unit No 38 Unit No 39 Unit No 40 Bottom Unit No 41 Unit No 42 Unit No 43 Unit No 44 Unit No 45 Unit No 46 Unit No47 Unit No 48 19 1100100000 Top Unit No 49 Unit No 50 Bottom 20 0010100000 Indoor unit Operation m...

Page 286: ...Bottom Unit No 41 Unit No 42 Unit No 43 Unit No 44 Unit No 45 Unit No 46 Unit No47 Unit No 48 27 1101100000 Top Unit No 49 Unit No 50 Bottom 28 0011100000 29 1011100000 30 0111100000 31 1111100000 32 0000010000 33 1000010000 34 0100010000 35 1100010000 36 0010010000 37 1010010000 38 0110010000 39 1110010000 Outdoor unit Operation mode Permissible stop Standby Cooling Heating B 40 0001010000 41 100...

Page 287: ...999 9 A A The unit is C 57 1001110000 THBOX 99 9 to 999 9 A A 58 0101110000 High pressure sensor data 99 9 to 999 9 A A The unit is kgf cm 2 59 1101110000 Low pressure sensor data 99 9 to 999 9 A A 60 0011110000 61 1011110000 62 0111110000 63 1111110000 64 0000001000 65 1000001000 66 0100001000 67 1100001000 68 0010001000 69 1010001000 70 0110001000 71 1110001000 Current data No SW1 Item Display U...

Page 288: ... to 9999 B Control data Hz 87 1110101000 Total frequency of each unit 0000 to 9999 A A 88 0001101000 COMP frequency 0000 to 9999 A A 89 1001101000 90 0101101000 91 1101101000 COMP operating fre quency 0000 to 9999 A A The unit is rps Output frequency of the inverter depends on the type of compressor and equals the integer multi ples x1 x2 etc of the operating frequency of the compressor 92 0011101...

Page 289: ...door LEV opening Fully open 1400 105 1001011000 106 0101011000 107 1101011000 108 0011011000 COMP operating cur rent DC 00 0 to 999 9 A A Peak value A 109 1011011000 110 0111011000 111 1111011000 COMP bus voltage 00 0 to 999 9 A A The unit is V 112 0000111000 113 1000111000 114 0100111000 115 1100111000 116 0010111000 Number of times the unit went into the mode to remedy wet vapor suction 0000 to ...

Page 290: ...s Upper 4 digits 0000 to 9999 A A Count up at start up The unit is Time 124 0011111000 COMP number of start stop events Lower 4 digits 0000 to 9999 A A 125 1011111000 126 0111111000 127 1111111000 128 0000000100 129 1000000100 Integrated operation time of compressor for rotation purpose 0000 to 9999 B The unit is h 130 0100000100 131 1100000100 132 0010000100 133 1010000100 134 0110000100 135 1110...

Page 291: ...100 152 0001100100 153 1001100100 154 0101100100 155 1101100100 156 0011100100 157 1011100100 158 0111100100 159 1111100100 160 0000010100 161 1000010100 162 0100010100 163 1100010100 164 0010010100 165 1010010100 166 0110010100 Current data No SW1 Item Display Unit A B 1 Remarks 1234567890 LD1 LD2 LD3 LD4 LD5 LD6 LD7 LD8 OC OS 1 A The condition of either OC or OS is displayed individually B The c...

Page 292: ... 1101010100 172 0011010100 173 1011010100 174 0111010100 175 1111010100 176 0000110100 177 1000110100 Current data No SW1 Item Display Unit A B 1 Remarks 1234567890 LD1 LD2 LD3 LD4 LD5 LD6 LD7 LD8 OC OS 1 A The condition of either OC or OS is displayed individually B The condition of the entire refrigerant system is displayed ...

Page 293: ...rter Error details of inverter 0001 0120 A A 188 0011110100 Error history 6 0000 to 9999 B B 189 1011110100 Error details of inverter Error details of inverter 0001 0120 A A 190 0111110100 Error history 7 0000 to 9999 B B 191 1111110100 Error details of inverter Error details of inverter 0001 0120 A A 192 0000001100 Error history 8 0000 to 9999 B B 193 1000001100 Error details of inverter Error de...

Page 294: ...ling Heating A A 206 0111001100 207 1111001100 208 0000101100 Outdoor unit control mode Stop Thermo OFF Abnormal stop Scheduled control Initial start up Defrost Oil balance Low fre quency oil recovery A A 209 1000101100 Refrigerant recovery A A 210 0100101100 211 1100101100 Relay output display 1 Lighting Comp in op eration 72C OC Always lit A A 212 0010101100 Relay out put display 2 Lighting Top ...

Page 295: ...9 9 A A The unit is C 228 0010011100 THBOX 99 9 to 999 9 A A 229 1010011100 High pressure sensor data 99 9 to 999 9 A A The unit is kgf cm 2 230 0110011100 Low pressure sensor data 99 9 to 999 9 A A 231 1110011100 232 0001011100 233 1001011100 234 0101011100 235 1101011100 236 0011011100 237 1011011100 238 0111011100 239 1111011100 240 0000111100 241 1000111100 242 0100111100 Error history No SW1 ...

Page 296: ...999 B Control data Hz 258 0100000010 Total frequency of each unit 0000 to 9999 A A 259 1100000010 COMP frequency 0000 to 9999 A A 260 0010000010 261 1010000010 262 0110000010 COMP operating fre quency 0000 to 9999 A A The unit is rps 263 1110000010 264 0001000010 All AK OC OS 0000 to 9999 B 265 1001000010 AK 0000 to 9999 A A 266 0101000010 FAN 0000 to 9999 A A Fan inverter output 267 1101000010 Fa...

Page 297: ...999 9 A A 280 0001100010 281 1001100010 282 0101100010 COMP bus voltage 00 0 to 999 9 A A The unit is V 283 1101100010 284 0011100010 285 1011100010 286 0111100010 287 1111100010 288 0000010010 COMP Operation time Upper 4 digits 0000 to 9999 A A The unit is h 289 1000010010 COMP Operation time Lower 4 digits 0000 to 9999 A A 290 0100010010 291 1100010010 292 0010010010 Error history No SW1 Item Di...

Page 298: ...top events Lower 4 digits 0000 to 9999 A A 296 0001010010 297 1001010010 298 0101010010 299 1101010010 300 0011010010 Integrated operation time of compressor for rotation purpose 0000 to 9999 B The unit is h Error history No SW1 Item Display Unit A B 1 Remarks 1234567890 LD1 LD2 LD3 LD4 LD5 LD6 LD7 LD8 OC OS 1 A The condition of either OC or OS is displayed individually B The condition of the enti...

Page 299: ...0 304 0000110010 305 1000110010 306 0100110010 307 1100110010 308 0010110010 309 1010110010 310 0110110010 311 1110110010 312 0001110010 313 1001110010 314 0101110010 315 1101110010 316 0011110010 317 1011110010 318 0111110010 319 1111110010 320 0000001010 321 1000001010 322 0100001010 323 1100001010 324 0010001010 325 1010001010 326 0110001010 327 1110001010 1 A The condition of either OC or OS i...

Page 300: ... 0100101010 339 1100101010 340 0010101010 341 1010101010 342 0110101010 343 1110101010 344 0001101010 345 1001101010 346 0101101010 347 1101101010 348 0011101010 349 1011101010 350 0111101010 Current data No SW1 Item Display Unit A B 1 Remarks 1234567890 LD1 LD2 LD3 LD4 LD5 LD6 LD7 LD8 OC OS 1 A The condition of either OC or OS is displayed individually B The condition of the entire refrigerant sy...

Page 301: ...ss capacity code 0000 to 9999 0000 to 9999 358 0110011010 IC8 Address capacity code 0000 to 9999 0000 to 9999 359 1110011010 IC9 Address capacity code 0000 to 9999 0000 to 9999 360 0001011010 IC10 Address capacity code 0000 to 9999 0000 to 9999 361 1001011010 IC11 Address capacity code 0000 to 9999 0000 to 9999 362 0101011010 IC12 Address capacity code 0000 to 9999 0000 to 9999 363 1101011010 IC13...

Page 302: ...y code 0000 to 9999 0000 to 9999 382 0111111010 IC32 Address capacity code 0000 to 9999 0000 to 9999 383 1111111010 IC33 Address capacity code 0000 to 9999 0000 to 9999 384 0000000110 IC34 Address capacity code 0000 to 9999 0000 to 9999 385 1000000110 IC35 Address capacity code 0000 to 9999 0000 to 9999 386 0100000110 IC36 Address capacity code 0000 to 9999 0000 to 9999 387 1100000110 IC37 Address...

Page 303: ...city code 0000 to 9999 0000 to 9999 401 1000100110 402 0100100110 403 1100100110 404 0010100110 405 1010100110 406 0110100110 407 1110100110 408 0001100110 IC1 Suction temperature 99 9 to 999 9 B The unit is C 409 1001100110 IC2 Suction temperature 99 9 to 999 9 410 0101100110 IC3 Suction temperature 99 9 to 999 9 411 1101100110 IC4 Suction temperature 99 9 to 999 9 Data on indoor unit system No S...

Page 304: ...ure 99 9 to 999 9 424 0001010110 IC17 Suction temperature 99 9 to 999 9 425 1001010110 IC18 Suction temperature 99 9 to 999 9 426 0101010110 IC19 Suction temperature 99 9 to 999 9 427 1101010110 IC20 Suction temperature 99 9 to 999 9 428 0011010110 IC21 Suction temperature 99 9 to 999 9 429 1011010110 IC22 Suction temperature 99 9 to 999 9 430 0111010110 IC23 Suction temperature 99 9 to 999 9 431 ...

Page 305: ...9 9 450 0100001110 IC43 Suction temperature 99 9 to 999 9 451 1100001110 IC44 Suction temperature 99 9 to 999 9 452 0010001110 IC45 Suction temperature 99 9 to 999 9 453 1010001110 IC46 Suction temperature 99 9 to 999 9 454 0110001110 IC47 Suction temperature 99 9 to 999 9 455 1110001110 IC48 Suction temperature 99 9 to 999 9 456 0001001110 IC49Suction temperature 99 9 to 999 9 457 1001001110 IC50...

Page 306: ...ture 99 9 to 999 9 478 0111101110 IC21 Liquid pipe temperature 99 9 to 999 9 479 1111101110 IC22 Liquid pipe temperature 99 9 to 999 9 480 0000011110 IC23 Liquid pipe temperature 99 9 to 999 9 481 1000011110 IC24 Liquid pipe temperature 99 9 to 999 9 482 0100011110 IC25 Liquid pipe temperature 99 9 to 999 9 483 1100011110 IC26 Liquid pipe temperature 99 9 to 999 9 484 0010011110 IC27 Liquid pipe t...

Page 307: ...1110 IC43 Liquid pipe temperature 99 9 to 999 9 501 1010111110 IC44 Liquid pipe temperature 99 9 to 999 9 502 0110111110 IC45 Liquid pipe temperature 99 9 to 999 9 503 1110111110 IC46 Liquid pipe temperature 99 9 to 999 9 504 0001111110 IC47 Liquid pipe temperature 99 9 to 999 9 505 1001111110 IC48 Liquid pipe temperature 99 9 to 999 9 506 0101111110 IC49 Liquid pipe temperature 99 9 to 999 9 507 ...

Page 308: ...dress Count up display of number of connected units B 515 1100000001 BC BS TU address Count up display of number of connected units 516 0010000001 OS address Count up display of number of connected units B 517 1010000001 Version Capacity S W version Refrigerant type Model and capacity Communication address A A 518 0110000001 OC address OC address display B 519 1110000001 520 0001000001 521 1001000...

Page 309: ...0100001 IC12 Gas pipe temperature 99 9 to 999 9 535 1110100001 IC13 Gas pipe temperature 99 9 to 999 9 536 0001100001 IC14 Gas pipe temperature 99 9 to 999 9 537 1001100001 IC15 Gas pipe temperature 99 9 to 999 9 538 0101100001 IC16 Gas pipe temperature 99 9 to 999 9 539 1101100001 IC17 Gas pipe temperature 99 9 to 999 9 540 0011100001 IC18 Gas pipe temperature 99 9 to 999 9 541 1011100001 IC19 Ga...

Page 310: ... 1111010001 IC37 Gas pipe temperature 99 9 to 999 9 560 0000110001 IC38 Gas pipe temperature 99 9 to 999 9 561 1000110001 IC39 Gas pipe temperature 99 9 to 999 9 562 0100110001 IC40 Gas pipe temperature 99 9 to 999 9 563 1100110001 IC41 Gas pipe temperature 99 9 to 999 9 564 0010110001 IC42 Gas pipe temperature 99 9 to 999 9 565 1010110001 IC43 Gas pipe temperature 99 9 to 999 9 566 0110110001 IC4...

Page 311: ...99 9 583 1110001001 IC11SH 99 9 to 999 9 584 0001001001 IC12SH 99 9 to 999 9 585 1001001001 IC13SH 99 9 to 999 9 586 0101001001 IC14SH 99 9 to 999 9 587 1101001001 IC15SH 99 9 to 999 9 588 0011001001 IC16SH 99 9 to 999 9 589 1011001001 IC17SH 99 9 to 999 9 590 0111001001 IC18SH 99 9 to 999 9 591 1111001001 IC19SH 99 9 to 999 9 592 0000101001 IC20SH 99 9 to 999 9 593 1000101001 IC21SH 99 9 to 999 9...

Page 312: ...9 611 1100011001 IC39SH 99 9 to 999 9 612 0010011001 IC40SH 99 9 to 999 9 613 1010011001 IC41SH 99 9 to 999 9 614 0110011001 IC42SH 99 9 to 999 9 615 1110011001 IC43SH 99 9 to 999 9 616 0001011001 IC44SH 99 9 to 999 9 617 1001011001 IC45SH 99 9 to 999 9 618 0101011001 IC46SH 99 9 to 999 9 619 1101011001 IC47SH 99 9 to 999 9 620 0011011001 IC48SH 99 9 to 999 9 621 1011011001 IC49SH 99 9 to 999 9 62...

Page 313: ...99 9 633 1001111001 IC11SC 99 9 to 999 9 634 0101111001 IC12SC 99 9 to 999 9 635 1101111001 IC13SC 99 9 to 999 9 636 0011111001 IC14SC 99 9 to 999 9 637 1011111001 IC15SC 99 9 to 999 9 638 0111111001 IC16SC 99 9 to 999 9 639 1111111001 IC17SC 99 9 to 999 9 640 0000000101 IC18SC 99 9 to 999 9 641 1000000101 IC19SC 99 9 to 999 9 642 0100000101 IC20SC 99 9 to 999 9 643 1100000101 IC21SC 99 9 to 999 9...

Page 314: ...C 99 9 to 999 9 662 0110100101 IC40SC 99 9 to 999 9 663 1110100101 IC41SC 99 9 to 999 9 664 0001100101 IC42SC 99 9 to 999 9 665 1001100101 IC43SC 99 9 to 999 9 666 0101100101 IC44SC 99 9 to 999 9 667 1101100101 IC45SC 99 9 to 999 9 668 0011100101 IC46SC 99 9 to 999 9 669 1011100101 IC47SC 99 9 to 999 9 670 0111100101 IC48SC 99 9 to 999 9 671 1111100101 IC49SC 99 9 to 999 9 672 0000010101 IC50SC 99...

Page 315: ...0101 INV board S W version 0 00 to 99 99 A A 677 1010010101 678 0110010101 679 1110010101 Fan board S W version 0 00 to 99 99 A A 680 0001010101 681 1001010101 682 0101010101 683 1101010101 684 0011010101 685 1011010101 686 0111010101 687 1111010101 1 A The condition of either OC or OS is displayed individually B The condition of the entire refrigerant system is displayed ...

Page 316: ...01 Time of error detection 3 2 00 00 to 99 12 1 to 31 Year and month and date alternate display 696 0001110101 Time of error detection 4 00 00 to 23 59 Hour minute 697 1001110101 Time of error detection 4 2 00 00 to 99 12 1 to 31 Year and month and date alternate display 698 0101110101 Time of error detection 5 00 00 to 23 59 Hour minute 699 1101110101 Time of error detection 5 2 00 00 to 99 12 1 ...

Page 317: ... detection 9 2 00 00 to 99 12 1 to 31 Year and month and date alternate display 708 0010001101 Time of error detection 10 00 00 to 23 59 Hour minute 709 1010001101 Time of error detection 10 2 00 00 to 99 12 1 to 31 Year and month and date alternate display 710 0110001101 Time of last data backup be fore error 00 00 to 23 59 Hour minute 711 1110001101 Time of last data backup be fore error 2 00 00...

Page 318: ...ening 0000 to 9999 725 1010101101 IC12 LEV opening 0000 to 9999 726 0110101101 IC13 LEV opening 0000 to 9999 727 1110101101 IC14 LEV opening 0000 to 9999 728 0001101101 IC15 LEV opening 0000 to 9999 729 1001101101 IC16 LEV opening 0000 to 9999 730 0101101101 IC17 LEV opening 0000 to 9999 731 1101101101 IC18 LEV opening 0000 to 9999 732 0011101101 IC19 LEV opening 0000 to 9999 733 1011101101 IC20 L...

Page 319: ...ing 0000 to 9999 755 1100111101 IC42 LEV opening 0000 to 9999 756 0010111101 IC43 LEV opening 0000 to 9999 757 1010111101 IC44 LEV opening 0000 to 9999 758 0110111101 IC45 LEV opening 0000 to 9999 759 1110111101 IC46 LEV opening 0000 to 9999 760 0001111101 IC47 LEV opening 0000 to 9999 761 1001111101 IC48 LEV opening 0000 to 9999 762 0101111101 IC49 LEV opening 0000 to 9999 763 1101111101 IC50 LEV...

Page 320: ...n mode 782 0111000011 IC19 Operation mode 783 1111000011 IC20 Operation mode 784 0000100011 IC21 Operation mode 785 1000100011 IC22 Operation mode 786 0100100011 IC23 Operation mode 787 1100100011 IC24 Operation mode 788 0010100011 IC25 Operation mode 789 1010100011 IC26 Operation mode 790 0110100011 IC27 Operation mode 791 1110100011 IC28 Operation mode 792 0001100011 IC29 Operation mode 793 1001...

Page 321: ...ode 811 1101010011 IC48 Operation mode 812 0011010011 IC49 Operation mode 813 1011010011 IC50 Operation mode 814 0111010011 IC1 filter 0000 to 9999 B Hours since last mainte nance h 815 1111010011 IC2 filter 0000 to 9999 816 0000110011 IC3 filter 0000 to 9999 817 1000110011 IC4 filter 0000 to 9999 818 0100110011 IC5 filter 0000 to 9999 819 1100110011 IC6 filter 0000 to 9999 820 0010110011 IC7 filt...

Page 322: ...011 IC25 filter 0000 to 9999 839 1110001011 IC26 filter 0000 to 9999 840 0001001011 IC27 filter 0000 to 9999 841 1001001011 IC28 filter 0000 to 9999 842 0101001011 IC29 filter 0000 to 9999 843 1101001011 IC30 filter 0000 to 9999 844 0011001011 IC31 filter 0000 to 9999 845 1011001011 IC32 filter 0000 to 9999 846 0111001001 IC33 filter 0000 to 9999 847 1111001011 IC34 filter 0000 to 9999 848 0000101...

Page 323: ... to 9999 858 0101101011 IC45 filter 0000 to 9999 859 1101101011 IC46 filter 0000 to 9999 860 0011101011 IC47 filter 0000 to 9999 861 1011101011 IC48 filter 0000 to 9999 862 0111101011 IC49 filter 0000 to 9999 863 1111101011 IC50 filter 0000 to 9999 Data on indoor unit system No SW1 Item Display Unit A B 1 Remarks 1234567890 LD1 LD2 LD3 LD4 LD5 LD6 LD7 LD8 OC OS 1 A The condition of either OC or OS...

Page 324: ...ent effec tive value 1 99 9 to 999 9 A A 873 1001011011 Power factor phase an gle 1 99 9 to 999 9 A A The unit is deg 874 0101011011 875 1101011011 876 0011011011 877 1011011011 878 0111011011 879 1111011011 880 0000111011 Control board Reset counter 0 to 254 A A The unit is time 881 1000111011 INV board Reset counter 0 to 254 A A 882 0100111011 883 1100111011 884 0010111011 Fan board Reset counte...

Page 325: ...00111 899 1100000111 900 0010000111 901 1010000111 902 0110000111 903 1110000111 904 0001000111 905 1001000111 906 0101000111 907 1101000111 1020 0011111111 1021 1011111111 1022 0111111111 1023 1111111111 Other types of data No SW1 Item Display Unit A B 1 Remarks 1234567890 LD1 LD2 LD3 LD4 LD5 LD6 LD7 LD8 OC OS 1 A The condition of either OC or OS is displayed individually B The condition of the e...

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Mitsubishi Electric PUHY-P120YHMU-A, Service Manual

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