Mitsubishi Electric PUHY-200YMF-C Service Handbook Download Page 66 | Manualshive

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–65–

(2)

BC controller (for PURY)

Note : 1

Two error modes include indoor unit side trouble, BC controller trouble, and outdoor unit side trouble. In the case of indoor
unit side trouble, error stop is observed in the concerned indoor unit only, and in the cases of BC controller and outdoor unit
side troubles, error stop is observed in all the indoor units, BC controller, and outdoor unit.

YES

NO

YES

NO

YES

NO

Normal operations

Trouble observed

Stop

Solenoid valve OFF,

LEV fully closed.

Start

Breaker

turned on

Operation
command

1. Operation mode judgement

(cooling-only, heating-only,
cooling/heating mixed)

2. Transmission to outdoor unit

Receiving operation mode

command from outdoor unit

Error mode

Cooling-only

operations

Heating-only

operations

Cooling-main

operations

Heating-main

operations

Operation mode

Operation mode

Operation mode

Cooling/heating mixed

Note : 1

Fan

Error stop

Error code blinks on the

outdoor controller board

Error command to

BC controller

Error code blinks on the

remote controller

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Summary of Contents for PUHY-200YMF-C

Page 1: ...ITY MULTI Models PUHY 200YMF C 250YMF C PUHY P200YMF C P250YMF C PUY 200YMF C 250YMF C PUY P200YMF C P250YMF C PURY 200YMF C 250YMF C PURY P200YMF C P250YMF C CMB P104 P105 P106 P108 P1010 P1013 P1016V E Service Handbook ...

Page 2: ...TE CONTROLLER 52 5 CONTROL 58 1 Control of Outdoor Unit 58 2 Control of BC Controller 63 3 Operation Flow Chart 64 4 List of Major Component Functions 70 5 Resistance of Temperature Sensor 73 6 REFRIGERANT AMOUNT ADJUSTMENT 74 1 Refrigerant Amount and Operating Characteristics 74 2 Adjustment and Judgement of Refrigerant Amount 74 7 TROUBLESHOOTING 84 1 Principal Parts 84 2 BC Controller Disassemb...

Page 3: ...he main unit Warning Use the specified cables for wiring Make the connections securely so that the outside force of the cable is not applied to the terminals Inadequate connection and fastening may generate heat and cause a fire Have all electric work done by a licensed electrician according to Electric Facility Engineering Standard and Interior Wire Regulations and the instructions given in this ...

Page 4: ... change and performance may drop Do not use a refrigerant other than R407C If another refrigerant R22 etc is used the chlorine in the refrigerant may cause the refrigerator oil to de teriorate Use a vacuum pump with a reverse flow check valve The vacuum pump oil may flow back into the refriger ant cycle and cause the refrigerator oil to deteriorate Do not use the following tools that have been use...

Page 5: ... Both ends of the pipes should be sealed until immediately before brazing Wrap elbows and T s in plastic bags for storage The new refrigerator oil is 10 times more hygroscopic than the conventional refrigerator oil such as Suniso Water infiltration in the refrigerant circuit may deteriorate the oil or cause a compressor failure Piping materials must be stored with more care than with the conventio...

Page 6: ...ons Use only the necessary minimum quantity of oil Reason 1 The refrigerator oil used for the equipment is highly hygroscopic and may introduce water inside Notes Introducing a great quantity of mineral oil into the refrigerant circuit may also cause a compressor failure Do not use oils other than ester oil ether oil or alkylbenzene ...

Page 7: ...roduct Flare tool Flaring of pipes Current product Bender Bending of pipes Current product Application oil Applied to flared parts Current product Torque wrench Tightening of flare nuts Current product Pipe cutter Cutting of pipes Current product Welder and nitrogen cylinder Welding of pipes Current product Refrigerant charging meter Refrigerant charging Current product Vacuum gauge Checking the v...

Page 8: ...o flux when brazing between copper pipes or between a copper pipe and copper coupling 4 If installed refrigerant pipes are not immediately connected to the equipment then braze and seal both ends of them Reasons 1 The new refrigerant oil is 10 times more hygroscopic than the conventional oil The probability of a machine failure if water infiltrates is higher than with conventional refrigerant oil ...

Page 9: ...e refrigerant circuit when the vacuum pump power is turned off power failure It is also possible to attach a check valve to the actual vacuum pump afterwards 2 Standard degree of vacuum for the vacuum pump Use a pump which reaches 0 5 Torr 500 MICRON or below after 5 minutes of operation In addition be sure to use a vacuum pump that has been properly maintained and oiled using the specified oil If...

Page 10: ...t to the outside temperature is charged first while the rest of refrigerants remain in the cylinder Note In the case of a cylinder with a syphon liquid R407C is charged without turning the cylinder up side down Check the type of cylinder before charging 8 Dryer 1 Replace the dryer when the refrigerant circuit is opened Ex Change the compressor full gas leakage Be sure to replace the dryer with a C...

Page 11: ...Appearance of Components Outdoor unit PU H Y P 200 250YMF C PUHY YMF C PUY P YMF C Propeller fan Fan motor SCC Accumulator Compressor Drier Compressor Heatexchanger front Control Box Heatexchanger rear SCC Accumulator Compressor 4 way valve ...

Page 12: ...changer front Control box Compressor Fan motor Heat exchanger rear PURY YMF C PURY P YMF C SV3 SV4 SV6 SV5 SV block Accumulator CV block Compressor 4 way valve SV3 SV4 SV6 SV5 SV block 4 way valve CS circuit Accumulator Compressor Drier CV block ...

Page 13: ...Noise filter Choke coil L2 Terminal block TB1A Power Source Terminal block TB7 Transmission Centralized control Terminal block TB3 Transmission Inteligent Power Module IPM G A board Diode stack DS Magnetic contactor 52C Capacitor C2 C3 Smoothing capacitor ...

Page 14: ... OFF 3 5 Trouble CNRS3 Serial transmission to INV board CN3D SW1 CNTR CNFC1 CNVCC4 Power source for control 5V CN20 Power supply 3 L1 1 N SW3 SW4 SW2 SWU2 SWU1 CNS1 CNS2 CN40 CN41 CNVCC3 Power Source for control 1 2 30V 1 3 30V 4 6 12V 5 6 5V CN3S CN3N LD1 Service LED ...

Page 15: ...supply for IPM control CNACCT CNAC2 Power source 1 L2 3 N 5 G CN52C Control for 52C CNFAN Control for MF1 CNR CNRS2 Serial transmission to MAIN board SW1 CNVDC 1 4 DC 560V CNVCC4 Power supply 5V CNL2 Choke coil CNVCC2 Power supply 1 2 30V 1 3 30V 4 6 12V 5 6 5V ...

Page 16: ... 15 FANCON board CNFAN CNPOW CNFC2 CN15V1 CNDR1 CNIPM1 G A board CNE CNDC1 ...

Page 17: ... 16 BC controller CNTR CN02 M NET transmission CN03 CN12 Power supply 1 EARTH 3 N 5 L SW4 SW2 SW1 ...

Page 18: ... 17 RELAY 10 board RELAY 4 board ...

Page 19: ...HY 200YMF C 250YMF C Solenoid valve Orifice Capillary Check valve Thermal sensor Strainer SP Service port ACC Accumulator TH1 TH6 TH7 TH8 TH5 TH2 Indoor unit O S 63HS CJ1 Comp HEX2 HEX1 SCC LEV1 ST4 BV2 ST2 BV1 ST1 CJ2 CV1 ST3 SV1 SV2 CP1 SLEV SA MA CP2 63H ...

Page 20: ...ifice Capillary Check valve Thermal sensor Strainer SP Service port ACC Accumulator 2PUY 200YMF C 250YMF C SA MA TH6 HEX2 HEX1 TH7 TH8 TH5 TH2 CJ1 LEV1 SLEV BV2 ST2 BV1 ST1 ST3 ST4 SV1 SV2 CJ2 O S Comp CP1 63HS SCC CP2 63H ...

Page 21: ... sensor Strainer SP Service port ACC Accumulator HEX 1 HEX 2 TH6 SCC SV3 CP1 CJ1 CJ2 63HS SV1 ST3 CV1 O S 63H 63LS MA SA SLEV CP4 TH9 TH7 ST4 LEV1 ST2 BV2 Indoor units ST1 BV1 Comp Drier TH2 TH10 CP3 SV4 ST9 ST8 TH8 TH5 SV2 ST5 TH1 3PUHY P200YMF C P250YMF C ...

Page 22: ...J1 CJ2 63H SV1 SV2 CV2 CV1 TH1 ST5 MA SA SLEV TH7 ST4 LEV1 SCC Comp O S Drier TH10 CP TH8 CP3 TH5 ST3 TH9 TH2 ST2 BV2 Indoor units ST1 BV1 63LS 63HS Solenoid valve Orifice Capillary Check valve Thermal sensor Strainer SP Service port ACC Accumulator ...

Page 23: ...EXf1 CV10 CV3 CV2 CV5 CV4 CV9 CV8 CV6 TH7 Check Valves Block ACC Solenoid Valves Block SV6 SV5 SV3 SV4 Distributor TH23 TH21 TH22 LEV SVC SVA SVB Indoor units BC controller CMB P104V E Gas liquid separator 63HS1 LEV1 63HS3 LEV3 TH12 TH11 TH15 TH16 Solenoid valve Orifice Capillary Check valve Thermal sensor Strainer SP Service port ACC Accumulator ...

Page 24: ...its BC controller CMB P104V E Gas liquid separator 63HS1 LEV1 63HS3 LEV3 TH12 TH11 TH15 TH16 TH1 O S 63HS ST5 CV1 ST6 SJ1 63H 63LS SV1 SV2 CP1 CJ2 SLEV ACC SA MA CV10 CV9 CV8 Check Valves Block TH5 BV2 BV1 ST1 TH6 HEXb CV7 HEXf3 HEXf2 HEXf1 CV3 CV2 CV5 CV4 CV6 TH7 Solenoid Valves Block SV6 SV5 SV3 SV4 Distributor TH9 Drier TH2 CS Composition Sensing circuit CP2 Comp TH10 ...

Page 25: ...3 3 4 2 5 R6 PE L3 1 L1 M1 M2 S L2 Refer to the service handbook about the switch operations CNDC1 4P 1 2 3 4 CNDR2 9P 12 10 11 13 14 5 4 3 2 1 6 7 8 9 5 4 3 2 1 6 7 8 9 12 10 11 13 14 5 4 3 2 1 6 7 8 9 5 4 3 2 1 6 7 8 9 Yellow Orange Purple Black White Gray 5 1 2 3 4 Fan motor Heat exchanger V W N U MF U V W P N Gate amp board G A board 1 3 2 CN3S 3P FB1 FB2 FB3 IPM CNDR1 9P CN15V1 14P Orange Bro...

Page 26: ...CNLV1 5P CNTR 3P CN15V2 14P CNL2 2P CN30V 2P MF1 R7 L2 Power circuit board INV board BOX BODY Inverter Controller Box Red Brown Black White Red Blue Control circuit board TH10 CN09 CNFC1 6P TH9 1 2 2P CN37 6P 6 5 4 3 2 1 X08 X09 CN36 6P 6 5 4 3 2 1 X06 X07 4P CN05 TH6 63H SV2 21S4 X05 X04 X10 3P CN38 3 2 1 1 2 3 4 5 6 6P CN34 2P CN06 4 3 2 1 2 1 L2 L3 N BOX BODY TB1B L1 White Red Black Blue NF Red...

Page 27: ...4 13 12 11 10 9 8 7 6 5 4 3 2 1 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 SVM SV4B SV4A SV4C SV3B SV3A SV3C SV2B SV2A SV2C SV1C SV1A SV1B 3 1 CNTR CN02 CN12 1 5 3 3 1 7 5 3 1 7 5 3 1 7 5 3 1 7 5 3 1 TR X2 X1 X30 X4 X3 X31 X6 X5 X32 X8 X7 X33 X21 DC 30V 6 5 4 3 2 1 6 5 4 3 2 1 LEV3 1 2 3 CNP1 1 2 3 CNP3 2 1 1 2 3 4 5 6 7 8 4 3 2 1 1 2 3 2 1 CN03 CN13 CN10 CN11 CN07 CN05 L N TH11 TH12 TH15 TH16 PS1 PS3...

Page 28: ...13 12 11 10 9 8 7 6 5 4 3 2 1 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 SV4B SV4A SV4C SV3B SV3A SV3C SV2B SV2A SV2C SV1C SV1A SV1B 3 1 CNTR CN02 CN12 1 5 3 3 1 7 5 3 1 7 5 3 1 7 5 3 1 7 5 3 1 TR X2 X1 X30 X4 X3 X31 X6 X5 X32 X8 X7 X33 X21 DC 30V 6 5 4 3 2 1 6 5 4 3 2 1 LEV3 1 2 3 CNP1 1 2 3 CNP3 2 1 1 2 3 4 5 6 7 8 4 3 2 1 1 2 3 2 1 CN03 CN13 CN10 CN11 CN07 CN05 L N TH11 TH12 TH15 TH16 PS1 PS3 20 22...

Page 29: ...5 4 3 2 1 6 5 4 3 2 1 LEV3 1 2 3 CNP1 1 2 3 CNP3 2 1 1 2 3 4 5 6 7 8 4 3 2 1 1 2 3 2 1 CN51 CN50 CNOUT 1 CNOUT 3 CN03 CN13 CN10 CN11 CN07 CN05 L N TH11 TH12 TH15 TH16 PS1 PS3 20 22V TB02 M2 M1 CN26 CN27 CN28 CN29 CN30 CN31 TB01 220 240V CN36 Symbol explanation Terminal block for Transmission TB02 Terminal block for power source TB01 Name Symbol Solenoid valve Solenoid valve Solenoid valve Solenoid...

Page 30: ...SV6B SV6A SV6C 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 RELAY4 Board SV5C SV5A SV5B SV4B SV4A SV4C SV3B SV3A SV3C SV2B SV2A SV2C CN32 CN33 CN39 3 1 SV7C SV7A SV7B SV8C SV8A SV8B SV1C SV1A SV1B X14 X13 X36 X37 X15 X16 9 8 7 6 5 4 3 2 1 16 15 10 11 12 13 14 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 CN52 7 5 3 1 7 5 3 1 Symbol explanation Terminal block for Transmiss...

Page 31: ...6A SV6C SVM 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 RELAY4 Board SV5C SV5A SV5B SV4B SV4A SV4C SV3B SV3A SV3C SV2B SV2A SV2C CN32 CN33 CN34 CN39 3 1 SV7C SV7A SV7B SV8C SV8A SV8B SV1C SV1A SV1B X14 X13 X36 X37 X15 X16 9 8 7 6 5 4 3 2 1 16 15 10 11 12 13 14 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 X18 X17 X38 X39 X19 X20 CN52 CN53 5 7 3 1 7 5 3 1 7 5 3 1 7 5 3 3 ...

Page 32: ...X37 X36 X13 X14 X2 X1 X30 X4 X3 X31 X6 X5 X32 X8 X7 X33 X10 X9 X34 X12 X11 X35 X21 6 5 4 3 2 1 6 5 4 3 2 1 LEV3 LEV1 1 2 3 CNP1 1 2 3 CNP3 2 1 1 2 3 4 5 6 7 8 4 3 2 1 1 2 3 2 1 CN03 CN02 CN13 CN10 CN11 CN07 CN05 3 3 CN34 CN33 1 3 5 7 CN32 TH11 TH12 TH15 TH16 TR TB02 CN38 CN26 CN27 CN28 CN29 CN30 CN31 TB01 CN35 3 1 CNTR 4 1 2 3 4 5 6 7 8 3 2 1 SV1B SV1A SV1C SV2C SV2A SV2B SV3C SV3A SV3B SV4C SV4A ...

Page 33: ... 1 6 5 4 3 2 1 LEV3 LEV1 1 2 3 CNP1 1 2 3 CNP3 2 1 1 2 3 4 5 6 7 8 4 3 2 1 1 2 3 2 1 CN03 CN02 CN13 CN10 CN11 CN07 CN05 3 3 CN34 CN33 1 3 5 7 CN32 TH11 TH12 TH15 TH16 TR TB02 CN38 CN26 CN27 CN28 CN29 CN30 CN31 TB01 CN35 3 1 CNTR 4 1 2 3 4 5 6 7 8 3 2 1 SV1B SV1A SV1C SV2C SV2A SV2B SV3C SV3A SV3B SV4C SV4A SV4B SV5B SV5A SV5C 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 1 2 3 4 5 6 7 8 9 10 11 12 13 14 ...

Page 34: ...0 20 3 4 7 2 16 0 47 1 99 0 46 93 95 40 42 7 5 9 7 7 10 6 4 69 60 27 27 8 6 26 26 10 10 14 5 13 3 18 3 16 8 380 415 380 415 270 75 270 75 340 95 340 95 Indoor unit fan notch Refrigerant volume Total current Volts Frequency Indoor unit SC LEV1 Oil return SLEV High pressure Low pressure after O S before MA Pressure DB WB Set m kg A V V Hz Pulse kg cm2 G MPa C Condition Sectional temperature Outdoor ...

Page 35: ...10 10 12 15 1 1 11 11 80 85 27 27 8 6 26 26 10 10 0 23 0 23 14 5 13 3 18 3 16 8 380 415 380 415 270 75 270 75 340 95 340 95 Indoor unit fan notch Refrigerant volume Total current Volts Frequency Indoor unit SC LEV1 Oil return SLEV High pressure Low pressure after O S before MA Pressure DB WB Set m kg A V V Hz Pulse kg cm2 G MPa C Condition Sectional temperature Outdoor unit LEV opening Inlet Outle...

Page 36: ...00 150 235 235 20 7 5 0 19 4 4 0 2 03 0 49 1 90 0 39 19 6 19 6 18 3 18 3 1 92 1 92 1 79 1 79 107 110 50 47 7 7 10 10 12 12 75 70 26 30 15 15 Indoor unit fan notch Refrigerant volume Compressor volts Frequency Outdoor unit Indoor unit BC controller 1 3 Oil return High pressure Low pressure BC controller liquid Intermediate Pressure DB WB Q ty m kg V V Hz A Pulse kg cm2 G MPa C Condition Sectional t...

Page 37: ...20 2 15 2 15 97 105 50 47 7 7 10 10 12 12 7 5 75 70 26 30 15 15 0 23 0 23 380 415 380 415 270 75 270 75 340 95 340 95 14 5 13 3 18 3 16 8 Indoor unit fan notch Refrigerant volume Compressor volts Frequency Outdoor unit Indoor unit BC controller 1 3 Oil return High pressure Low pressure BC controller liquid Intermediate Pressure DB WB Q ty m kg V V Hz A Pulse kg cm2 G MPa C Condition Sectional temp...

Page 38: ...0 36 1 72 0 36 80 85 6 8 1 2 1 2 1 2 2 2 50 60 71 71 33 33 13 4 12 3 17 1 15 6 380 415 380 415 280 83 280 83 355 102 355 102 Indoor unit fan notch Refrigerant volume Total current Volts Frequency Indoor unit SC LEV1 Oil return SLEV High pressure Low pressure after O S before MA Pressure DB WB Set m kg A V V Hz Pulse kg cm2 G MPa C Condition Sectional temperature Outdoor unit LEV opening Discharge ...

Page 39: ...2 2 3 3 3 3 0 0 60 70 80 80 39 39 0 28 0 28 13 4 12 3 17 1 15 6 380 415 380 415 270 75 270 75 340 95 340 95 Indoor unit fan notch Refrigerant volume Total current Volts Frequency Indoor unit SC LEV1 Oil return SLEV High pressure Low pressure after O S before MA Pressure DB WB Set m kg A V V Hz Pulse kg cm2 G MPa C Condition Sectional temperature Outdoor unit LEV opening Discharge TH1 Heat exchange...

Page 40: ... 37 1 67 1 37 100 95 2 1 1 1 4 2 1 1 45 40 38 40 80 85 380 415 380 415 285 85 285 85 360 105 360 105 13 4 12 3 17 1 15 6 Indoor unit fan notch Refrigerant volume Compressor volts Frequency Outdoor unit total current Indoor unit BC controller 1 3 Oil return High pressure Low pressure BC controller liquid Intermediate Pressure DB WB Q ty m kg V V Hz A Pulse kg cm2 G MPa C Condition Sectional tempera...

Page 41: ...100 95 2 1 1 1 4 2 1 1 7 5 45 40 38 40 80 85 0 28 0 28 380 415 380 415 280 80 280 80 340 95 340 95 13 4 12 3 17 1 15 6 Indoor unit fan notch Refrigerant volume Compressor volts Frequency Outdoor unit total current Indoor unit BC controller 1 3 Oil return High pressure Low pressure BC controller liquid Intermediate Pressure DB WB Q ty m kg V V Hz A Pulse kg cm2 G MPa C Condition Sectional temperatu...

Page 42: ...d Stop all indoor units 2 C 8 C no operation PUHY YMF C 18kg cm2 G 1 76MPa Model 200 Centralized control connected Deletion of refrigeration system connection information Deletion Disregard errors Start forced defrosting 90 min SW3 2 Function valid All indoor units test operation ON 0 C 15 C 2000 PUY YMF C 20kg cm2 G 1 96MPa Model 250 Before power is turned on During normal operation when power is...

Page 43: ...on PUHY P YMF C 49 C Model P200 Invalid Centralized control connected Deletion of refrigeration system connection information Deletion Disregard errors Start forced defrosting 90 min SW3 2 Function valid All indoor units test operation ON 1 C 15 C 2000 PUY P YMF C 53 C Model P250 Valid Before power is turned on During normal operation when power is on Should be set on OFF Before power is turned on...

Page 44: ...C Invalid 49 C Model 200 Centralized control connected Deletion of refrigeration system connection information Deletion Disregard errors Start forced defrosting 90 min SW3 2 Function valid All indoor units test operation ON 3 C 15 C Valid 53 C Model 250 Before power is turned on During normal operation when power is on Should be set on OFF Before power is turned on Before power is turned on During...

Page 45: ...Centralized control connected Deletion of refrigeration system connection information Deletion Disregard errors Start forced defrosting 90 min SW3 2 Function valid All indoor units test operation ON 5 C 15 C Valid 53 C Model P250 Valid Before power is turned on During normal operation when power is on Should be set on OFF Before power is turned on Before power is turned on During normal operation ...

Page 46: ... Indoor unit inlet None 100h Ineffective Fan output display At stationary heating Very low speed SW1 7 setting Ineffective Ineffective Heat pump None None None 1st setting Down blow B C Effective Built in remote controller Provided 2500h Effective Thermo ON signal display Always at heat Low speed Set airflow Effective Effective Cool only Provided Provided Provided 2nd setting Horizontal Ineffectiv...

Page 47: ...eight setting External static pressure setting For options Setting of air outlet opening Airflow control PLFY P VKM A PCFY P VGM A PLFY P VLMD A PLFY P VKM A PLFY P VKM A PCFY P VGM A PKFY P VGM A PDFY P VM A Phase control Relay selection The ceiling height is changed by SWB setting As this switch is used by interlocking with SWC refer to the item of SWC for detail SWA SWB 1 2 3 2 way 3 5 m 3 8 m ...

Page 48: ... the crankcase heater has been powered by turning the main power source on at least 12 hours before starting the test run The shorter powering time causes compressor trouble 2 Caution at inverter check Because the inverter power portion in outdoor unit electrical part box have a lot of high voltage portion be sure to follow the instructions shown below During energizing power source never touch in...

Page 49: ...ooling test run mode Check humidifier operations and water supply status in heating test run mode 1 2 3 4 5 Result 1 2 3 Work Disassembling and assembling of drain water lifting up mechanism Mounting of float switch Electric wiring Float switch moves smoothly Float switch is mounted on mounting board straightly without deformation Float switch does not contact with copper pipe Wiring procedure is ...

Page 50: ...cting combination of outdoor unit and indoor unit followed Maximum number of indoor units which can be connected connecting model name and total capacity Follow limitation of refrigerant piping length For ex ample 70m or less total length 220m at the farthest Connecting piping size of branch piping correct Refrigerant piping diameter correct Refrigerant leak generated at connection Insulation work...

Page 51: ...ver finish the initial mode System set Before starting Error stop or not operate Can not be properly set with power source turned on Not operate Set temperature not obtained at heating operations Thermostat stop is difficult Error stop Error stop compressor trouble 1 2 1 2 3 4 Address setting properly done M NET Remote controller indoor unit and outdoor unit Setting of address No done when shuttin...

Page 52: ...mally 8 Make sure that interlocking devices such as ventilator operate normally if any 9 Press ON OFF button to cancel test run Stop operation Note 1 If check code is displayed on remote controller or remote controller does not operate normally 2 Test run automatically stops operating after two hours by activation of timer set to two hours 3 During test run test run remaining time is displayed on ...

Page 53: ...stration This switch is used to retrieve identify the content of group and inter locked connection information registered This switch is used to retrieve identify the content of group and inter locked connection information registered This switch selects the case to register indoor units as group group setting mode or that as interlocked interlocked setting mode The unit address is shown at one sp...

Page 54: ...registration information of indoor units The address of the registered indoor units in group is retrieved identified 3 Retrieval identification of registration information The connection information of any unit indoor outdoor units remote controller or the like is retrieved identified 4 Deletion of group registration information of indoor units The registration of the indoor units under group regi...

Page 55: ...witch A B at the same time for 2 seconds to change to the original ordinary mode with the remote controller under stopping Remote controller under stopping HO under displaying Ordinary mode INDOOR UNIT ADDRESS NO ERROR CODE OAUNITADDRESSNO C INDOOR UNIT ADDRESS NO ERROR CODE OAUNITADDRESSNO C ERROR CODE OAUNITADDRESSNO C 1 1 Group setting mode Confirm the indoor unit address No Confirm the connect...

Page 56: ...e controller or the like is displayed Operation procedure 1 With the remote controller under stopping or at the display of HO continuously press the FILTER switch A B at the same time for 2 seconds to change to the registration mode 2 Operate switch G for the interlocked setting mode See figure below 3 Assign the unit address of which registration information is desired to confirm with the TIMER S...

Page 57: ...stration continuously press the FILTER switch A B at the same time for 2 seconds to change to the original ordinary mode with the remote controller under stopping ERROR CODE OAUNITADDRESSNO C INDOOR UNIT ADDRESS NO ERROR CODE OAUNITADDRESSNO C INDOOR UNIT ADDRESS NO ERROR CODE OAUNITADDRESSNO C 1 Set the address 2 Press the switch for confirmation E Registered No registration Same display will app...

Page 58: ...H and press switch E to call the address to be deleted See the figure below As the error display on the remote controller is usually transmitted from the indoor unit OA UNIT ADDRESS No is used as the address of the indoor unit 4 Press the CLOCK ON OFF switch F twice See the figure below 5 After completing the deletion continuously press the FILTER switch A B at the same time for 2 seconds to retur...

Page 59: ...ations During oil recovery opera tions During 20Hz operations at fall in low pressure or low pressure saturation tempera ture 3minutes or more after starting When high pressure rises Pd When high pressure rises Pd during 20Hz operations 3 minutes after starting When discharge temperature rises 3 minutes after starting SV1 ON Open OFF Close Turned on for 4 minutes Turned on for 4 minutes Always tur...

Page 60: ...Operation temperature is 130 C 4 Periodical frequency control Frequency controll is periodically performed except for the frequency controls at operation start status change and protection 1 Cycle of periodical frequency control Periodical frequency control is performed every minute after the time specified below has passed 20 sec after starting compressor or finishing defrostoing operations 20 se...

Page 61: ...ted 39 min P YMF C 43 min YMF C of compressor operations defrosting operations start when 4 C or less P YMF C 2 C or less YMF C of piping temperature TH5 is detected for 3 consecutive minutes Forcible defrosting operations start by turning on forcible defrost switch SW2 7 if 3 minutes have already elapsed after compressor start or completion of defrosting operations 2 Completion of defrosting oper...

Page 62: ... is detected during defrosting operations the defrosting operations stop and defrosting prohibition time decided by integrated operation time of compressor is set to be 20 minutes 5 Change in number of operating indoor units during defrosting operations In case number of operating indoor units changes during defrosting operations the defrosting operations continue and control of unit number change...

Page 63: ...ing the recovery operation and it will be conducted after finishing the recov ery operation 11 Control of outdoor unit fan and outdoor unit heat exchanger capacity 1 PU H Y 200 250YMF C 1 Control system Depending on capacity required control outdoor fan flow rate with phase control for maintaining evaporation temperature 0 C when Pd 15kg cm2 G 1 47MPa lower than 0 C when Pd 15kg cm2 G 1 47MPa in c...

Page 64: ...re control 2 2 Control of BC Controller 1 Control of SVA SVB and SVC SVA SVB and SVC are turned on and off depending on connection mode Cooling Heating Stop Defrost SVA ON OFF OFF OFF SVB OFF ON OFF OFF SVC ON OFF OFF OFF 2 Control of SVM SVM is turned on and off corresponding to operation mode Operation mode Cooling only Cooling main Heating only Heating main Stop SVM ON OFF OFF OFF OFF 3 Control...

Page 65: ... normally outdoor unit shows only LED display without undergoing stop Note 3 On PUHY system operation mode conforms to mode command by indoor unit However when outdoor unit is being under cooling operation the operation of indoor unit will be prohibited even by setting a part of indoor units under operation or indoor unit under stopping or fan mode to heating mode Reversely when outdoor unit is be...

Page 66: ...NO Normal operations Trouble observed Stop Solenoid valve OFF LEV fully closed Start Breaker turned on Operation command 1 Operation mode judgement cooling only heating only cooling heating mixed 2 Transmission to outdoor unit Receiving operation mode command from outdoor unit Error mode Cooling only operations Heating only operations Cooling main operations Heating main operations Operation mode ...

Page 67: ...ooling operations Prohibition Prohibition Cooling heating automatic operations Dry operation Fan operations Prohibition Remote controller blinking Note 3 Note 3 Note 3 Note 1 Note 2 Note 1 Note 1 Indoor unit LEV fully closed Opening 60 Note 2 Two error modes include indoor unit trouble BC controller trouble and outdoor unit side trouble In the case of indoor unit trouble error stop is observed in ...

Page 68: ...oid valve OFF PURY 6 BC controller LEV fully closed PURY 1 Inverter frequency control 2 Indoor unit LEV oil return LEV control 3 Solenoid valve control 4 Outdoor unit fan control 5 BC controller solenoid valve control PURY 6 BC controller LEV control PURY Cooling operation 4 way valve OFF Indoor unit fan operations Test run start Thermostat ON Normal operations Test run Stop 3 minute restart preve...

Page 69: ...est run start 4 way valve OFF Thermostat ON 3 minute restart prevention Note 1 When outdoor unit starts defrosting it transmits defrost operations command to BC controller and indoor unit and the indoor unit starts defrosting operations Similarly when defrosting operation stops indoor unit returns to heating operation after receiving defrost end command of outdoor unit Note 2 1 PUHY P 200 250YMF C...

Page 70: ...chronized with compressor low speed OFF operations Dry operations 4 way valve OFF Inlet temp 18 C Note 2 Thermostat ON Test run start Note 1 Note 1 When indoor unit inlet temperature exceeds 18 C outdoor unit compressor and indoor unit fan start intermittent operations synchronously Operations of outdoor unit BC controller PURY indoor unit LEV and solenoid valve accompanying compressor are the sam...

Page 71: ...tion 20 C 250kΩ 70 C 34kΩ 30 C 160kΩ 80 C 24kΩ 40 C 104kΩ 90 C 17 5kΩ 50 C 70kΩ 100 C 13 0kΩ 60 C 48kΩ 110 C 9 8kΩ 1 Detects the saturated vapor temperature 2 Calculates the refrigerant circula tion configuration 3 Controls the compressor fre quency 4 Controls the outdoor unit s fan air volume 1 Frequency control 2 Defrost control and liquid level detection at heating 1 Outdoor air temperature det...

Page 72: ... at heating Indoor unit control thermostat 1 Indoor unit control freeze prevention hot adjust etc 2 LEV control in heating operation Subcool detection LEV control in cooling operation Superheat detector R120 7 465kΩ B25 120 4057 Rt 7 465exp 4057 20 C 250kΩ 70 C 34kΩ 30 C 160kΩ 80 C 24kΩ 40 C 104kΩ 90 C 17 5kΩ 50 C 70kΩ 100 C 13 0kΩ 60 C 48kΩ 110 C 9 8kΩ R50 17kΩ B25 50 4170 Rt 17exp 4170 20 C 605 ...

Page 73: ...exp 3460 0 C 15kΩ 10 C 9 7kΩ 20 C 6 4kΩ 25 C 5 3kΩ 30 C 4 3kΩ 40 C 3 1kΩ Continuity check by a tester Same as LEV of indoor unit 1 273 0 AC 220 240V Open when energized Closed when de energized 12V DC stepping motor drive 0 to 2000 valve opening pulse Opens for cooling only defrosting Supplies refrigerant to cooling indoor unit Supplies refrigerant to heating indoor unit Supplies refrigerant to co...

Page 74: ...Rt 7 465exp 4057 Thermistor Ro 33kΩ 1 TH2 Thermistor R50 17kΩ 2 THHS Rt 33exp 3965 Rt 17exp 4170 50 40 30 20 10 0 20 10 10 20 30 40 50 0 25 20 15 10 5 0 90 100 110 120 1 273 t 1 273 t 1 273 t 1 273 t 1 273 50 Temperature C Temperature C Temperature C Temperature C Resistance kΩ Resistance kΩ Resistance kΩ Resistance kΩ 1 273 0 1 273 120 1 273 0 ...

Page 75: ...ation temperature Te is 10 degrees or less 2 Adjustment and Judgement of Refrigerant Amount 1 Symptom The symptoms shown in the table below are the signs of excess or lack of refrigerant amount Be sure to adjust refrigerant amount in refrigerant amount adjustment mode by checking operation status judging refrigerant amount and performing selfdiagnosis with LED for overall judgement of excess or la...

Page 76: ...g the refrigerant volume be sure that the unit is in the operating condition and carry out refrigerant volume judgment and self diagnosis by the LED s judging overall whether the volume of refrigerant is in excess or is insufficient Perform adjustments by running the unit in the refrigerant volume adjustment mode 2 Refrigerant Volume a Checking the Operating Condition Operate all the indoor units ...

Page 77: ...MF C Refrigerant Charge Volume 6 5kg 7 0kg 8 0kg 8 5kg Calculation Formula Calculate the additional refrigerant volume by calculating the size of the extension liquid piping and its length units m Additional Refrigerant Volume kg 0 12 L1 0 06 L2 0 024 L3 α L1 Length of ø12 7 liquid pipe m L2 Length of ø9 52 liquid pipe m L3 Length of ø6 35 liquid pipe m α refer to the calculation table In the calc...

Page 78: ...m2 G or higher If the pressure does not reach refrigerant cannot be collected halfway Therefore collect used refrigerant and evacuate the unit completely and then fill new refrigerant up to a specified quantity Notes 3 Judgment by the AL is at best only a rough guideline Please do not add refrigerant based on the AL reading alone Be sure to obtain calculations of the correct amount before adding r...

Page 79: ...by little from the low pressure side service port Note 1 As the refrigerant volume can not be adjusted in the heating mode retrieve the refrigerant evacuate air and then fill the specified volume of refrigerant if it is necessary to adjust the refrigerant volume in the winter season 3deg Tc TH5 10deg Tc TH5 3deg Retrieve the refrigerant little by little from the low pressure side service port Fill...

Page 80: ...le from the low pressure side service port Note 1 As the refrigerant volume can not be adjusted in the heating mode retrieve the refrigerant evacuate air and then fill the specified volume of refrigerant if it is necessary to adjust the refrigerant volume in the winter season 3deg Tc TH5 10deg Tc TH5 3deg Retrieve the refrigerant little by little from the low pressure side service port Fill refrig...

Page 81: ...otes 2 A refrigerant volume adjustment performed in the cooling mode must be done with a gauge reading of 13 kg cm2 G or higher If the pressure does not reach refrigerant cannot be collected halfway Therefore collect used refrigerant and evacuate the unit completely and then fill new refrigerant up to a specified quantity Notes 3 Judgment by the AL is at best only a rough guideline Please do not a...

Page 82: ...ittle by little from the low pressure side service port Note 1 As the refrigerant volume can not be adjusted in the heating mode retrieve the refrigerant evacuate air and then fill the specified volume of refrigerant if it is necessary to adjust the refrigerant volume in the winter season 5deg SC11 10 SC16 30deg 30deg SC16 TH1 110 C Fill refrigerant little by little from the low pressure side serv...

Page 83: ...nt Retrieve the refrigerant little by little from the low pressure side service port Note 1 As the refrigerant volume can not be adjusted in the heating mode retrieve the refrigerant evacuate air and then fill the specified volume of refrigerant if it is necessary to adjust the refrigerant volume in the winter season 5deg SC11 10 SC16 30deg 30deg SC16 TH1 110 C Fill refrigerant little by little fr...

Page 84: ...plenishment of refrigerant in this system the following evacuation and refrigerant replenishment procedures are required 1 Perform evacuation by connecting to system analyzer joint of service port of high pressure ball valve and high pressure charge plug and joint of service port of low pressure ball valve and low pressure charge plug 2 Perform refrigerant charge from low pressure circuit only aft...

Page 85: ...tween the two pressures exceeds 1 kg cm2 G 0 098MPa the affected pressure sensor is faulty deteriorating performance c If the pressure reading in the LD1 display does not change the affected pressure sensor is faulty 3 Disconnect the pressure sensor from the MAIN board and check the pressure according to the LD1 display a If the pressure is 0 1 kg cm2 G 0 098MPa on the LD1 display the affected pre...

Page 86: ...and heating mode so check its operation by the LED display and the operating noise emitted by the solenoid valve b Changes in the operating condition by solenoid valve operation can be confirmed by the temperature of the bypass circuit and the sound of the refrigerant SW1 SV2 SV1 LED 1 2 3 4 5 6 7 8 9 10 ON PU H Y P200 250YMF C LED 1 2 3 4 5 6 7 8 9 10 ON SV4 SV3 1 2 3 4 5 6 7 8 SV2 SV1 1 In the c...

Page 87: ...pressure in the cooling mode and heating mode so check its operation by the LED display and the operating noise emitted by the solenoid valve Conditions during operation See Control of Outdoor Unit b Changes in the operating condition by solenoid valve operation can be confirmed by the temperature of the bypass circuit and the sound of the refrigerant 3 SV3 6 Control of heat exchanger capacity a O...

Page 88: ... refer to the Refrigerant Circuit Diagram And ON OFF of Solenoid valve is depends on the amount of running indoor units ambient temperature and so on So please check by LED Monitor Display The SV coil is taken off then it is possible to open caps and check plungers But the special tool which is on the Service Parts List is needed Closed torque 13kg m 1 3N m ...

Page 89: ...ange all the output phases are off 2 When the output is out of phase or remains ON continuously the motor cannot run smoothly but move jerkily and vibrates When the power is switched ON a 520 pulse valve opening signal is output to make sure the valve s position so that it is definitely at point A The pulse signal is output for approximately 17 seconds When the valve operates smoothly there is no ...

Page 90: ...erature sensor will become low If the temperature is considerably low compared to the remote control s intake temperature display it can be judged that there is a fully closed failure In the case of minimal leakage it is not necessary to replace the LEV if there are no other effects 1 Check for pins not fully inserted on the connector and check the colors of the lead wires visually 2 Disconnect th...

Page 91: ...be sure to fasten the body in such a way that it will not move Installing the Coils Fasten 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 inserting the coils stopper securely in one of the indentations on the body There are four indentations for the stopper on the body around its circumference and it doesn t matter which indent...

Page 92: ...the pipe 6 7 8 and 9 are depend on ON OFF of the SV3 4 5 and 6 Please confirm by LED monitor display You can open the cap of valve A B and C but 3 types of hexagon socket screw keys The size is as follows Closed torque A 1 7kg m 0 17N m B 20kg m 2 0N m C 13kg m 1 3N m ...

Page 93: ...shooting of IPM should satisfy the following conditions Internal voltage 1 5V Power source one dry cell battery Central value of resistance range 10 40Ω The measured values for troubleshooting are shown in the table below Use the minimum range for tester resistance range Diode stack Perform continuity check with tester Judged as normal if the following characteristics are observed Use the minimum ...

Page 94: ... on indoor controller board 4 Faulty or disconnected transformer of indoor unit 5 Faulty indoor controller board 2 Faulty outdoor control circuit board or being out of control As normal transmission is failed between indoor and outdoor units outdoor unit model can not be recognized Checking method countermeasure a Check transmission terminal block of remote controller for voltage i In case of 17 3...

Page 95: ...r 13 Slipping off of centralized control transmission line TB7 at outdoor unit 14 At system connected with MELANS power supply connector CN40 is inserted to centralized control transmission line of outdoor unit Checking method countermeasure In case no MELANS used In case with MELANS used When MELANS is used HO display on the remote controller will disappear at the group registration of the indoor...

Page 96: ...es at registration and confirmation 1 Erroneous address of unit to be coupled 2 Slipping off of transmission line of unit to be coupled No connection 3 Faulty circuit board of unit to be coupled 4 Installation miss of transmission line Confirmation of different refrigerant system controller 5 Breaking of power source of outdoor unit to be confirmed 6 Slipping off of centralized control transmissio...

Page 97: ...on the INV board Check the voltage between L2 and N on power supply terminal block TB1 DC24 30 V Except the above mentioned Connector disconnected Except the above mentioned DC24 30 V Except the above mentioned DC24 30 V Except the above mentioned 0 5 2 5Ω Except the above mentioned 19 25Ω Except the above mentioned 0Ω Except the above mentioned AC198 264 V Except the above mentioned AC198 264 V E...

Page 98: ... to the entry of fine noise Transmission can be made normally but reply ACK or answer can not be issued normally due to noise 2 Method to confirm wave shape Check the wave shape of transmission line with an oscilloscope to confirm that the following conditions are being satisfied 1 The figure should be 104µs bit 1 2 No finer wave shape noise than the transmission signal 52µs 1 should be allowed 1 ...

Page 99: ...One point earthing should be made at outdoor unit Without earthing transmission signal may be changed as the noise on the transmission line has no way to escape For the shield earth of the transmission line for centralized control the effect of noise can be minimized if it is from one of the outdoor units in case of the group operation with different refrigerant systems and from the upper rank con...

Page 100: ... measuring device for business frequencies is used a rectified voltage meter with a symbol be used Correct measurement values cannot be obtained with an ordinary portable tester either analog or digital 1 If it was kept on for 12 hours or longer as specified 2 It was kept on for less than the specified period 1 The compressor stops and the same error code is displayed 1 The Inverter stops and the ...

Page 101: ...tightening torque at parts where screws are tightened 4 check the wiring polarity 5 check for a broken wire and 6 check for ground ing TB1A NF TB1B CNTR1 T01 CNTR TB1B CNPOW CNFAN CN04 CNMF CNFC1 CNFC2 Check if the wiring polarity is as shown on the wiring diagram plate Measure the resistance of the motor s coils 20 60Ω Measure the motor s insulation resistance with a megger 10 MΩ DC 500 V or more...

Page 102: ...ack b IPM Refer to Troubleshooting of IPM c Rush current protection resistor d Electromagnetic contactor e DC reactor For c e refer to Individual Parts Failure Judge ment Methods a As there is a possibility of instantaneous short circuit generated find the mark of the short circuit for repair b When a is not applicable the compressor may be faulty The ground fault of inverter output compressor can...

Page 103: ...placement of inverter parts 1 IPM and G A board should be replaced together at the same time When the IPM is damaged the G A board may possibly be broken and the use of the broken G A board damages the normal IPM Therefore replace the IPM and G A board together at the same time However if the G A board is damaged judge that the IPM is faulty then judge whether replacement is necessary or not 2 Ful...

Page 104: ... 103 Motor Compressor G A board Red U V W N P White Black Black Capacitor C2 C3 Red IPM ...

Page 105: ...ure sensor OK Replace the wrong puressure sensor by the correct pressure sensor and confirm detected pres sure is indicated correctly Short connectors 2 and 3 on the board and check the pressure Pressure range within 0 to 1kg cm2 G 0 098MPa Pressure of at least 32kg cm2 G 3 14MPa indicated Remove the pressure sensor connector from the board and check the pressure Check for the faulty connec tor on...

Page 106: ...ng principal Normal Insufficient cooling SC11 large SC16 small PHM 0 SC11 large SC16 small PHM 0 Warm indoor SC small Warm in door thermo ON especially noise SC11 small SC16 small PHM 0 Insufficient heating WarmindoorSCsmall Warm indoor thermo ON especially noise Measured Data High pressure of outdoor Low pressure satura tion temperature Low pressure of outdoor BC controller pressure liquid measur...

Page 107: ...ck thermistor resistance value Compare temperature for thermistor resistance value with actual mea sured valued No difference Insert applicable thermistor connector into board and check sensor input temperature on LED monitor for differ ence No difference No abnormality Change thermistor Check for connection problem Change the controller board Note 5 Yes No No Yes Note 4 Note 2 Note 1 Note 3 ...

Page 108: ...l Resistance measurement point connector Temperature sensor resistance graph Note 4 Check using LED monitor display switch outdoor MAIN board SW1 Measured Data Signal SW1 Setting Remarks Liquid inlet temperature TH11 See converter Bypass outlet temperature TH12 See converter Bypass outlet temperature TH15 See converter Bypass inlet temperature TH16 See converter Touch the probes of the tester or o...

Page 109: ...ly shut Yes Note 2 No Yes No Yes No Yes No Yes Check if LEV3 is controlled by superheat LEV3 is not controlled Check if SVM is ON SVM ON Check if SVA SVC are ON SVA SVC ON Check if SVB is OFF SVB OFF Check if LEV 3 are controlled by differential pressure Completion Check SVB Check SVA SVC Check SVM Check LEV3 Correct the problem Check LEV1 SVB ON Check if SVB is ON SVA SVC OFF Check if SVA SVC are...

Page 110: ... Failure mode Operating mode Description Normal range LEV No 1 3 Cooling only Cooling main Heating only Heating main 1 1 3 Normal 2 3 1 Insufficient cooling SH12 small SC11 small SC16 small Branch piping SC small Insufficient cooling insuf ficient heating SH12 small SC11 small SC16 large Branch piping SC small PHM large Heating indoor SC small PHM large Insufficient cooling Heating indoor SC small...

Page 111: ...onnectors from the board and use a tester to check conduction Check between connectors 1 3 5 and 2 4 6 Use a tester to measure resistance between each coil red white red orange brown yellow brown blue Correct value is 150Ω 10 Adjust repair Check for the following LEV full open ticking sound LEV full closed no sound Change LEV OK Confirm if LEV is closed fully Attach check LEDs illustrated nearby t...

Page 112: ...n and connector disconnection or looseness No problem Operate cooler and heater for the applicable solenoid valve s refrigerant system only Clicking noise produced when working timing Measure piping temperature on both sides of solenoid valve and check for following Solenoid valve ON no differential Solenoid valve OFF differential Solenoid valve normal OK Measure pipe temperature of inlet and outl...

Page 113: ...ting principal Defrosting Stopped SVM ON OFF OFF OFF ON OFF Note 2 SVA SVB SVC SVM Measure temperature of piping on either side of SVA 1 A Measure temperature at points marked X Measure temperature of piping on either side of SVB 1 B 4 BC controller transformer Cooling Heating Stopped Defrosting SVA ON OFF OFF OFF SVB OFF ON OFF OFF SVC ON OFF OFF OFF Mode Branch port Normal Malfunction CNTR 1 3 A...

Page 114: ...g the front panel and then remove the panel Two of the screws are not visible until you remove the electric panel box 3 Remove the two screws securing the ceiling panel Next lifting up on the panel slightly slide it inwards and then remove it The inside of the ceiling panel is hooked on a pin 4 Remove the single screw that secures the side panel and then remove the panel Celling panel Celling pane...

Page 115: ...s access for checking the entire controller board 3 Note the following precautions whenever replacing the controller board 1 Be sure you do not confuse a Type A controller board with a Type B controller board 2 Take care to avoid mistakes when connecting leads and connectors and double check for in complete and loose connections 3 Check to make sure that DIP switch settings are the same before and...

Page 116: ...ure sensor lead securely to the controller board 4 Pressure Sensor Procedure Photos 1 Remove the sensor panel 1 Use the procedure under 1 1 2 to check PS1 and PS3 2 Disconnect the connector of the applicable pressure sensor from the controller board and insulate the connector 1 Liquid pressure sensor CNP1 2 Intermediate pressure sensor CNP3 3 Install a new pressure sensor at the location shown in ...

Page 117: ...hat secure it 4 When the solenoid valve is defective remove the unit front panel disassemble the solenoid valve block and check the interior of the valve When disassembly space or footing for disassem bly of the solenoid valve block in the vicinity of the flow controller is not available the unit can be lowered from the ceiling to perform the work 1 To view the interior of a valve use a torque wre...

Page 118: ...l abnormality 4116 Fan speed abnormality motor abnormality 4200 VDC sensor circuit abnormality 4220 Bus voltage abnormality 4230 Radiator panel overheat protection 4240 Over loard protection 4250 IPM Alarm output Bus voltage abnormality Over Current Protection 4260 Cooling fan abnormality Air inlet TH21 IC 5101 Discharge TH1 OC Liquid pipe TH22 IC 5102 Low pressure saturation TH2 OC 5103 Gas pipe ...

Page 119: ...reliminary THHS sensor circuit abnormality 1216 Preliminary sub cool coil outlet thermal sensor abnormality TH7 1217 Preliminary sub cool coil bypass outlet thermal sensor abnormality TH8 1219 Preliminary sub cool coil bypass inlet thermal sensor abnormality TH9 1221 Preliminary ambient temperature thermal sensor abnormality TH6 1243 Preliminary compressor shell thermal sensor abnormality TH10 140...

Page 120: ...n the both ends of fuse is replace the fuse If none of the items in 1 to 3 is appli cable and if the trouble reappears even after the power is switched on again replace the circuit board by the follow ing procedure when replacing the cir cuit board be sure to connect all the connectors ground wires etc se curely 1 If serial transmission is restored af ter the INV board only is replaced then the IN...

Page 121: ...firm that ball valve is fully opened Check outdoor fan See Trouble check of outdoor fan Check operation status of cooling only or heating only See Trouble check of solenoid valve Check resistance of thermistor Check inlet temperature of sensor with LED monitor 1 Gas leak gas shortage 2 Overload operations 3 Poor operations of indoor LEV 4 Poor operations of OC controller LEV Cooling LEV1 5 Poor op...

Page 122: ...s setting of indoor unit connector Confirm that ball valve is fully opened Check indoor unit and take measu res to troube Check outdoor unit and take measures to trouble Check outdoor unit fan See Trouble check of outdoor unit fan See Trouble check of solenoid valve Check resistance of thermistor See Trouble check of pressure sen sor Check inlet temp and press of sensor by LED monitor 1 Gas leak G...

Page 123: ...ly heating principal LEV3 Defrost LEV3 4 Poor operations of BC controller SVM Cooling only defrost 5 Poor operations of BC controller SVA Cooling only cooling main 6 Poor operations of BC controller SVB Heating only heating main 7 Solenoid valve SV 3 6 trouble PURY SV3 4 PUHY P Cooling only cooling main 8 Setting error of connection address 9 Poor operations of ball valve 10 Short cycle of indoor ...

Page 124: ...door unit filter 11 Fall in air volume caused by dust on indoor unit fan 12 Dust on indoor unit heat exchanger 13 Indoor unit fan block motor trouble 9 13 Rise in high pressure caused by lowered condensing capacity in heating only and heating principal operation 14 Short cycle of outdoor unit 15 Dust on outdoor unit heat ex changer 16 Outdoor unit fan block motor trou ble poor operations of fan co...

Page 125: ...oor unit is stopped 2nd detection an error stop is performed and the check code 1501 is displayed 3 If the temperature rises again as above within 2 hours after the out door unit is stopped it becomes the first detection again and operation is the same as in 1 above 4 The 2 hour period after the outdoor unit stops is the abnormal delay pe riod and LED display is carried out during the abnormal sto...

Page 126: ... low pressure abruptly drop at indoor stopping by the erroneous wiring of transmission line differ ent connection of transmission line and refrigerant piping Temporary vacuum condition due to refrigerant distribution unbalance insufficient refrigerant of low pres sure line immediately after charg ing refrigerant 1 Water leak due to humidifier or the like in trouble 1 Drain sensor sinks in water be...

Page 127: ...etween each of the wires Check 1 the connections 2 the con tact at the connector 3 the tightening torque at screw tightening locations and 4 for wiring disconnections TB1A NF TB1B CNTR1 F3 T01 CNTR Refer to the circuit number and the wir ing diagram plate If F1 on the MAIN board or F3 is melted Resistance between both ends of the fuse is replace the fuses To judge failure of the T01 go to Indi vid...

Page 128: ... 52C is defective 5 The diode stack DS is defective 6 The reactor DCL is defective 7 The INV board is defective Confirm slipping off of connector CN33 on indoor controller board Confirm slipping off of connector FAN1 on indoor power board Check wiring for disconnection Check filter Check indoor fan motor When aboves have no trouble 1 For trouble after operating fan Replace indoor controller board ...

Page 129: ...compressor Check the compressor s insulation resistance Check the IPM Judge that the IPM is fauly Go to Individual Parts Failure Judgment Methods If none of the items in 1 to 8 is applicable and if the trouble reappears even after the power is switched on again replace the circuit board by following procedure when re placing the circuit board be sure to connect all the connec tors ground wires etc...

Page 130: ...verter compressor is defec tive Is the unit s exhaust short cycling Clean the heat exchanger If the power supply voltage is less than 342 V it is outside specifications If the external air temperature is over 43 C it is outside the specifications Is the indoor unit capacity total cor rect Are the outdoor indoor unit capac ity settings correct To judge failure of the solenoid valve go to Individual...

Page 131: ... TH11 Bypass outlet TH12 Bypass inlet TH15 Intermedi ate section TH16 Thermal sensor abnormality Outdoor Unit Same as 4230 Check the thermistor s resistance Check if the lead wires are pinched Check for tearing of the insulation Check if a pin is missing on the con nector Check if a wire is disconnected Check the temperature picked up by the sensor using the LED monitor If the deviation from the a...

Page 132: ... inverter started when the INV board s SW1 1 is OFF Inverter error detail 6 2 If the current sensor ACCT miss wiring is detected during inverter operation Inverter error detail 13 1 Pressutre sensor trouble 2 Inner pressure drop due to a leak age 3 Broken cover 4 Coming off of pin at connector por tion poor contact 5 Broken wire 6 Faulty thermistor input circuit of MAIN board 1 Pressure sensor tro...

Page 133: ... and error 7130 occurs the indoor unit s circuit board is for an exclusive R22 model so re place it with the circuit board for a unit which is also capable of using R407C If none of the items in 1 to 5 is appli cable and if the trouble reappears even after the power is switched on again replace the circuit board by fol lowing procedure when replacing the circuit board be sure to connect all the co...

Page 134: ...inuing operation over 5 minutes The transmission wave shape noise on the transmission line should be investigated in ac cordance with Investigation method of trans mission wave shape noise 1 Two or more controllers of outdoor unit indoor unit remote controller BC controller etc have the same address 2 In the case that signal has changed due to noise entered into the trans mission signal 1 At the c...

Page 135: ...Checking code 6602 6603 Meaning detecting method Cause Checking method Countermeasure Transmission line installed while turning power source on Check power source of indoor unit 220V 240V Shut off the power source of outdoor in door units BC controller and make it again Erroneous power source work Erroneous transmis sion work Check transmission line work and shield finish Ground fault or shield co...

Page 136: ... error Communication trouble between apparatus processor and trans mission processor Note The address attribute shown on remote controller indicates the controller which has detected error Turn off power sources of indoor unit BC controller and outdoor unit When power sources are turned off sepa rately microcomputer is not reset and nor mal operations can not be restored Controller trouble is the ...

Page 137: ...ed during operation 2 Faulty or slipping off of transmission wiring of BC controller 3 Slipping off of BC unit connector CN02 4 Faulty BC controller circuit board 1 When IC unit address is changed or modified during operation 2 Faulty or slipping off of transmission wiring of IC 3 Slipping off of IC unit connector CN2M 4 Faulty IC unit controller 5 Faulty remote controller 1 Faulty transmission wi...

Page 138: ... be consider ed Total capacity error 7100 Capacity code setting error 7101 Connecting set number error 7102 Address setting error 7105 1 Cause of 1 3 of Cause for single refri gerant system 2 Slipping off or short circuit of transmission line of OC terminal block for centralized con trol TB7 3 Shut down of OC unit power source of one refrigerant system 4 Neglecting insertion of OC unit power suppl...

Page 139: ...ertion of power supply connector CN40 into OC unit transmission line for centralized control 3 Slipping off or power source shut down of power supply unit for transmission line 4 Faulty system controller MELANS Same cause as that for plural refrigerant system Trouble of partial IC units 1 Same cause of that for single refrigerant sys tem Trouble of all IC in one refrigerant system 1 Error detected...

Page 140: ...power shutdown of power sup ply unit for transmission line 4 Faulty MELANS 1 IC unit is keeping the memory of the original group setting with RC although the RC ad dress was changed later The same symptom will appear for the regis tration with SC 2 IC unit is keeping the memory of the original interlocking registration with Fresh Master with RC although the Fresh Master address was changed later N...

Page 141: ...te the transmission wave shape noise on transmission line according to Investigation method of transmission wave shape noise Much possibility if 6602 is generated 3 System error Checking code 7100 7101 7102 Meaning detecting method Cause Checking method Countermeasure Total capacity error Total capacity of indoor units in the same refrigerant system ex ceeds limitations Trouble source Outdoor unit...

Page 142: ...or more Four connection joint 321 or more 2 Four or more indoor units are set for the same connection 3 The smallest connection No has not been set when used at joint 1 In case when the old type remote controller for M NET is used and the remote controller sensor is de signed on indoor unit SW1 1 turned ON A indoor unit not for the R407C model P is connected a Check for the model total capacity co...

Page 143: ...olenoid valve THHS Inverter radiator panel IC Indoor unit LEV Electronic expansion valve COMP Compressor SW1 Outdoor unit control circuit board E Memory storage for service activities sampling per minute 7 seg LED The numerical display includes that of pressure temperature or the like while the graphic display includes that of operating condition solenoid valve ON OFF state or the like Numerical d...

Page 144: ... 11 Defrost Heating Refrigerant Recovery Discharge Tempera ture Error Comp tempera ture Error LD1 Error TH9 Error SV1 night mode Com pressor operating Unit No 4 Unit No 12 Unit No 4 Unit No 12 Unit No 4 Unit No 12 Cooling Overcurrent Protection Reverse Phase Open Phase Error LD2 Error TH10 Error SV2 Prelimi nary Error Unit No 5 Unit No 13 Unit No 5 Unit No 13 Unit No 5 Unit No 13 Cooling High Oil ...

Page 145: ...ssure Error 1 2 Suction pressure Error TH1 Error TH7 Error Low Pressure Error Configuration Detection Error TH2 Error TH8 Error Outlet Tempera ture Error Comp tempera ture Error LD1 Error TH9 Error Overcur rent Protection Reverse Phase Open Phase Error LD2 Error TH10 Error Heat Sink Thermostat Operation TH5 Error LPS Error Overcur rent Break TH6 Error HPS Error Over charged Refrigerant THHS Error ...

Page 146: ...LEV LEV1 FANCON Output Value Toff INV Output current IAC 0C Address IC1 Address Capacity Code IC2 Address Capacity Code IC3 Address Capacity Code IC4 Address Capacity Code IC5 Address Capacity Code IC6 Address Capacity Code 99 9 999 9 0 9 999 1 and 2 below are displayed alternately at every 5 seconds 1 Accumulator Level 0 9 AL is also displayed 2 α 0C 0 9 999 Hz Low 3 deg or lower Low 3 deg or low...

Page 147: ...pacity Code IC11 Address Capacity Code IC12 Address Capacity Code IC13 Address Capacity Code IC14 Address Capacity Code IC15 Address Capacity Code IC16 Address Capacity Code COMP Operation Time Higher order 4 digits Lower order 4 digits Outdoor Unit Operation Mode Outdoor Unit Control Mode Relay Output Display 1 Lighting Display TH1 Data TH2 Data LD1 Data LD2 Data TH5 Data TH6 Data HPS Data THHS D...

Page 148: ...equency AK SLEV LEV1 DC Trunk Line Current Outdoor Unit Operation Indicator Elapsed Time for CS Circuit Closed Detection IC1 room Temperature IC2 room Temperature IC3 room Temperature IC4 room Temperature IC5 room Temperature IC6 room Temperature IC7 room Temperature IC8 room Temperature IC9 room Temperature IC10 room Temperature IC11 room Temperature IC12 room Temperature 0 9 999 99 9 999 9 0 999...

Page 149: ...Temperature IC15 room Temperature IC16 room Temperature IC1 Liquid Pipe Temperature IC2 Liquid Pipe Temperature IC3 Liquid Pipe Temperature IC4 Liquid Pipe Temperature IC5 Liquid Pipe Temperature IC6 Liquid Pipe Temperature IC7 Liquid Pipe Temperature IC8 Liquid Pipe Temperature IC9 Liquid Pipe Temperature IC10 Liquid Pipe Temperature IC11 Liquid Pipe Temperature IC12 Liquid Pipe Temperature IC13 ...

Page 150: ...00 0101110100 1101110100 0011110100 1011110100 0111110100 1111110100 0000001100 1000001100 0100001100 1100001100 0010001100 1010001100 0110001100 1110001100 IC7 Gas Pipe Temperature IC8 Gas Pipe Temperature IC9 Gas Pipe Temperature IC10 Gas Pipe Temperature IC11 Gas Pipe Temperature IC12 Gas Pipe Temperature IC13 Gas Pipe Temperature IC14 Gas Pipe Temperature IC15 Gas Pipe Temperature IC16 Gas Pip...

Page 151: ...000011100 1000011100 0100011100 1100011100 0010011100 IC9 SC IC10 SC IC11 SC IC12 SC IC13 SC IC14 SC IC15 SC IC16 SC IC1 LEV Opening pulse IC2 LEV Opening pulse IC3 LEV Opening pulse IC4 LEV Opening pulse IC5 LEV Opening pulse IC6 LEV Opening pulse IC7 LEV Opening pulse IC8 LEV Opening pulse IC9 LEV Opening pulse IC10 LEV Opening pulse IC11 LEV Opening pulse IC12 LEV Opening pulse IC13 LEV Opening...

Page 152: ...111100 1110111100 0001111100 1001111100 0101111100 1101111100 0011111100 1011111100 0111111100 1111111100 IC6 Operation Mode IC7 Operation Mode IC8 Operation Mode IC9 Operation Mode IC10 Operation Mode IC11 Operation Mode IC12 Operation Mode IC13 Operation Mode IC14 Operation Mode IC15 Operation Mode IC16 Operation Mode IC1 Filter IC2 Filter IC3 Filter IC4 Filter IC5 Filter IC6 Filter IC7 Filter I...

Page 153: ...Heating only Refrigerant Recovery Discharge Tempera ture Error Comp tempera ture Error LD1 Error TH9 Error SV1 night mode Com pressor operating Unit No 4 Unit No 12 Unit No 4 Unit No 12 Unit No 4 Unit No 12 Heat ing only OFF Cooling only Heating main Refrigerant Recovery Overcurrent Protection LD2 Error TH10 Error SV2 Prelimi nary Error Unit No 5 Unit No 13 Unit No 5 Unit No 13 Unit No 5 Unit No 1...

Page 154: ...H5 Data TH6 Data High Pressure Error 1 2 Suction pressure Error TH1 Error TH7 Error Low Pressure Error Configuration Detection Error TH2 Error Discharge Tempera ture Error Comp tempera ture Error LD1 Error TH9 Error Overcur rent Protection LD2 Error TH10 Error Heat Sink Thermostat Operation TH5 Error Overcur rent Break TH6 Error HPS Error Over charged Refrigerant THHS Error 0 9999 Inverter Error D...

Page 155: ...FANCON Output Value Toff INV Output Current IAC OC Address IC1 Address Capacity Code IC2 Address Capacity Code IC3 Address Capacity Code IC4 Address Capacity Code IC5 Address Capacity Code IC6 Address Capacity Code 99 9 999 9 99 9 999 9 0 9 999 1 and 2 below are displayed alternately at every 5 seconds 1 Accumulator Level 0 9 AL is also displayed 2 α OC 0 9 999 Hz Low 3 deg or lower Low 3 deg or l...

Page 156: ...ode IC13 Address Capacity Code IC14 Address Capacity Code IC15 Address Capacity Code IC16 Address Capacity Code COMP Operation Time Higher order 4 digits Lower order 4 digits Outdoor Unit Operation Mode Outdoor Unit Control Mode Relay Output Display 1 Lighting Display TH1 Data TH2 Data LD1 Data LD2 Data TH5 Data TH6 Data HPS Data THHS Data TH7 Data TH9 Data TH10 Data LPS Data α OC 0 99 0 99 0 9999...

Page 157: ...g Display DC Trunk Line Current Outdoor Unit Operation Display BC All Indoor Unit Mode Elapsed Time for CS Circuit Closed Detection BC TH 11 Data IBC TH 12 Data BC TH 13 Data BC TH 14 Data BC TH 15 Data BC TH 16 Data BC P1 Data BC P3 Data BC SC 11 Data BC SH 12 Data BC SH 13 Data BC SC 16 Data 0 9 999 99 9 999 9 0 9999 99 9 999 9 3 minute Re startprotection mode Heating only ON SV6 Warm up mode Co...

Page 158: ... Data BC LEV 3 Data BC LEV 4 Data IC1 liquid Pipe Temperature IC2 liquid Pipe Temperature IC3 liquid Pipe Temperature IC4 liquid Pipe Temperature IC5 liquid Pipe Temperature IC6 liquid Pipe Temperature IC7 liquid Pipe Temperature IC8 liquid Pipe Temperature IC9 liquid Pipe Temperature IC10 liquid Pipe Temperature IC11 liquid Pipe Temperature IC12 liquid Pipe Temperature IC13 liquid Pipe Temperatur...

Page 159: ...100 0101110100 1101110100 0011110100 1011110100 0111110100 1111110100 0000001100 1000001100 0100001100 1100001100 0010001100 1010001100 0110001100 1110001100 IC7 Gas Pipe Temperature IC8 Gas Pipe Temperature IC9 Gas Pipe Temperature IC10 Gas Pipe Temperature IC11 Gas Pipe Temperature IC12 Gas Pipe Temperature IC13 Gas Pipe Temperature IC14 Gas Pipe Temperature IC15 Gas Pipe Temperature IC16 Gas Pi...

Page 160: ...IC15 SC IC16 SC IC1 LEV Opening pulse IC2 LEV Opening pulse IC3 LEV Opening pulse IC4 LEV Opening pulse IC5 LEV Opening pulse IC6 LEV Opening pulse IC7 LEV Opening pulse IC8 LEV Opening pulse IC9 LEV Opening pulse IC10 LEV Opening pulse IC11 LEV Opening pulse IC12 LEV Opening pulse IC13 LEV Opening pulse IC14 LEV Opening pulse IC15 LEV Opening pulse IC16 LEV Opening pulse IC1 Operation Mode Branch...

Page 161: ...Operation Mode Branch Number IC8 Operation Mode Branch Number IC9 Operation Mode Branch Number IC10 Operation Mode Branch Number IC11 Operation Mode Branch Number IC12 Operation Mode Branch Number IC13 Operation Mode Branch Number IC14 Operation Mode Branch Number IC15 Operation Mode Branch Number IC16 Operation Mode Branch Number IC1 Filter IC2 Filter IC3 Filter IC4 Filter IC5 Filter IC6 Filter I...

Page 162: ...pressure gage to the low pressure servicing check joint CJ2 2 Stop all of the indoor units When the compressor has stopped shut off the liquid ball valve BV2 for the outdoor unit 3 Stop all of the indoor units When the compressor has stopped turn the SW3 6 switch on the main board for the outdoor unit to ON This will start the pump down operation causing all of the indoor units to enter the coolin...

Page 163: ...ot performed remaining refrigerant may cause the unit to malfunction 6 Remove any refrigerant remaining in the outdoor unit Reclaim the refrigerant do not discharge it into the air 7 Repair the leak point 8 After the leak point is repaired change the dryer and extract all of the air from the outdoor unit to create a vacuum 9 Open both ball valves BV1 and BV2 on the outdoor unit then adjust the ref...

Page 164: ... the refrigerant do not discharge it into the air 2 Repair the leaks 3 After the leaks are repaired replace the dryer with a new one and extract all of the air from the entire system to create a vacuum Then refill with refrigerant until it reaches the calculated specification outdoor unit extension piping indoor units Refer to Chapter 6 for more details ...

Page 165: ...block and correct any malfunc tions Note 3 Is the refrigerant composi tion of αOC correct Note 2 Finished checking the composition Check that R407 is correctly charged Note 4 Recharge the refrigerant Note 5 Finished checking the composition Calibrate the refrigerant composition of αOC Note 6 Are all units operating stably Note 1 9 CHECK THE COMPOSITION OF THE REFRIGERANT PURY P200 250YMF C only ...

Page 166: ... correctly charged in the liquid phase continue to Yes If there is a possibility that it was not charged correctly such as with a gas charger continue to No Note 5 After reclaiming the system s refrigerant extract the air to create a vacuum then refill with new refrigerant Be sure to charge in the liquid phase In addition be sure to change the dryer Note 6 After the units are operating stably chec...

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