Mitsubishi Electric P250 Service Handbook Download

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Use ester oil, ether oil or alkylbenzene (small amount) as the refrigerator oil to coat flares and flange connections.

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.

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[5] Piping Machining

Summary of Contents for P250

Page 1: ...Models PUHY P200 P250 P300 P350 P400YGM A PUHY P450 P500 P550 P600 P650YGM A PUY P200 P250 P300 P350YGM A Service Handbook AIR CONDITIONERS CITY MULTI ...

Page 2: ...itching to the built in Thermo on the remote controller 54 5 Electrical Wiring Diagram 55 1 PUHY P200 P250 P300 P350 P400YGM A PUY P200 P250 P300 P350YGM A 55 2 PUHY P450 P500 P550 P600 P650YGM A 56 3 Power Dispatching Extension Unit for the Transmission Lines 57 6 Refrigerant Circuit 58 1 Refrigerant Circuit Diagram 58 2 Functions of Principal Parts 62 7 Control 64 1 Dip Switch Functions and Thei...

Page 3: ...r water may enter the unit and present a risk of electric shock smoke or fire Only use Refrigerant R410A as indicated on the unit when installing or relocating the unit The use of any other refrigerant or an introduction of air into the unit circuit may cause the unit to run an abnormal cycle and cause the unit to burst Do not make any changes or modifications to the unit In case of problems consu...

Page 4: ... in fire or explosion Use refrigerant pipes made of C1220 phosphorus deoxidized copper categorized under H3000 Copper and Copper Alloy Seamless Pipes and Tubes a standard set by JIS Keep the inner and outer surfaces of the pipes clean and free of contaminants such as sulfur oxides dust dirt shaving particles oils and moisture Contaminants inside the refrigerant piping will cause the refrigerant oi...

Page 5: ...and will lead to a drop in performance Do not install the unit in a place where there is a possibility of flammable gas leak Leaked gas accumulated around the unit may start a fire Do not use the unit to preserve food animals plants artifacts or for other special purposes The unit is not designed to provide adequate conditions to preserve the quality of these items When installing the unit in a ho...

Page 6: ... switch Type B fuse molded case circuit breaker with a proper current capacity The use of large capacity fuses steel wire or copper wire may damage the unit or cause smoke or fire When installing draining pipes follow the instructions in the manual and make sure that they properly drain water so as to avoid dew condensation If not installed properly they may cause water leaks and damage the furnis...

Page 7: ...y guards in their proper places They are there to keep the users from injury from accidentally touching rotating high temperature or high voltage parts Do not touch the refrigerant pipes with bare hands during and immediately after operation Depending on the state of the refrigerant in the system certain parts of the unit such as the pipes and compressor may become very cold or hot and may subject...

Page 8: ...itions are met the replacement of drier is not necessary 1 Do not leave the refrigerant circuit longer than 2 hours 2 Cover the opening end with a cap or tape to keep moisture from entering 3 Also cover the opening end of the new part with a cap or tape 4 Do not perform the task in the rain 5 Evacuate the refrigerant circuit as specified 6 Verification of the connecting pipes Verify the type of re...

Page 9: ... some restrictions Tools Materials Notes Use Gas leak detector Vacuum Pump Flare Tool Refrigerant Recovery Equipment Detection of gas leaks Vacuum drying Flare machining of piping Recovery of refrigerant The ones for HFC type refrigerant may be used May be used if a reverse flow check adaptor is attached Changes have been made in the flare machining dimension Refer to the next page May be used if ...

Page 10: ...pes with at least the radial thickness specified in the chart below Pipes with a radial thickness of 0 7 mm or less may not be used Maximum Operation Pressure Applicable Refrigerants 3 45 MPa 4 30 MPa R22 R407C etc R410A Types of Copper Pipes Reference Use pipes that meet the local standards Type O pipes Type 1 2H or H pipes Size mm Size inch Radial Thickness mm Type ø 6 35 ø 9 52 ø 12 7 ø 15 88 ø...

Page 11: ...n those for units that use R22 in order to increase air tightness If a clutch type flare tool is used to machine flares on units that use R410A make the protruding part of the pipe between 1 0 and 1 5mm Copper pipe gauge for adjusting the length of pipe protrusion is useful Flare Machining Dimension mm External dimension of pipes Size Dimension A R410A ø 6 35 ø 9 52 ø 12 7 ø 15 88 ø 19 05 1 4 3 8 ...

Page 12: ...nd 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 conventional refrigerant pipes OK OK NO NO 10 4 Storage of Piping Material 1 Storage location 2 ...

Page 13: ...tions 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 11 5 Piping Machining ...

Page 14: ...nbrazingbetweencopper pipes or betweenacopper 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 2 A flux genera...

Page 15: ...ircuit 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 65Pa 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 the vacuum pump is not proper...

Page 16: ...n the pipes Verify that the vacuum degree has not risen by more than 130Pa 1 hour after evacuation A rise by less than 130Pa is acceptable If it has exceeded by more than 130Pa conduct vacuuming following the instructions in the 6 Special vacuum drying section 5 Procedures for stopping vacuum pump To prevent the reverse flow of vacuum pump oil open the relief valve on the vacuum pump side or draw ...

Page 17: ...linder before charging Cylin der Cylin der Valve Valve Liquid Liquid R410A is a pseudo azeotropic refrigerant boiling point R32 52 C R125 49 C and can roughly be handled in the same way as R22 however be sure to fill the refrigerant from the liquid side for doing so from the gas side will somewhat change the composition of the refrigerant in the cylinder When refrigerant leaks additional refrigera...

Page 18: ...emical property As with R22 the new refrigerant R410A is low in toxicity and a chemically stable non flammable refrigerant However because the specific gravity of steam is greater than that of air leaked refrigerant in a closed room will accumulate at the bottom of the room and may cause hypoxia Also leaked refrigerant exposed directly to an open flame will generate noxious gasses Use the unit in ...

Page 19: ...ing performance Compressor overheat Burning in the orbiting part Effects on the refrigeration cycle Sludge formation Generation of acid Oxidization Oil degradation Water infiltration Air infiltration Infiltration of contaminants Dust dirt Mineral oil etc Expansion valve and capillary freeze Hydrolysis Oxidization Adhesion to expansion valve and capillary Infiltration of contaminants into the compr...

Page 20: ... core shield cable for transmission line If transmission lines of different systems are wired with the same multiple core cable the resultant poor transmitting and receiving will cause erroneous operations Outdoor unit Indoor unit Remote controller 2 core cable 2 core cable Outdoor unit Remote controller Indoor unit Multiple core cable Type of cable Cable diameter Remarks Sheathed 2 core cable uns...

Page 21: ...model unit make the address of the K control unit larger than that of the indoor unit of M NET model Group register on the system controller so that the group No and the lowest address of the K controlled indoor units belonging to thegroup will be identical Use the address that equals the sum of the smallest indoor unit address in the same refrigerant system and 50 Use the address that equals the ...

Page 22: ...le Note 1 ON Note 1 When connecting only the LM adapter leave SW2 1 to OFF Note 1 Refer to section 7 2 12 Demand control for detailed information on demand control settings Setting the centralized control switch on the outdoor unit factory setting SW2 1 OFF 3 Category Output Input Usage Cooling operation is disabled thermo OFF by the external input to the outdoor units Can be used as an on demand ...

Page 23: ...be connected to gether to the indoor unit within the same group 2 MA remote controller of 3 units or more can not be connected to the indoor unit within the same group 3 When the total number of indoor units exceeds 26 units In cluding that above Type 200 a transmission booster is re quired 4 In the case when start stop input CN32 CN51 CN41 is used by indoor group operation the Automatic address s...

Page 24: ...lation manual of MA remote controller For indoor group operation For the group operation of IC connect 1 2 terminals of the terminal block TB15 on all ICs within the same group and connect 1 2 terminals of the terminal block TB15 on another IC to the terminals of MA remote controller with non polarity two wires To operate the indoor units with different function in the same group refer to 1 2 d LO...

Page 25: ...MA remote controllers can not be connected to gether to the indoor unit within the same group 2 MA remote controller of 3 units or more can not be connected to the indoor unit within the same group 3 When the total number of indoor units exceeds 26 units in cluding that above Type 200 a transmission booster is re quired Interlocking with ventilation Example to use shielded wire Group Group LC LC S...

Page 26: ...ation of the indoor unit and Lossnay from the remote controller is required For the regis tration method see the installation manual of remote controllers e Switch setting Address setting is required as listed below Order Unit or controller Address Setting method Caution Factory setting range setting Set the lowest address within a same group to the indoor unit desired to be the main unit Set to t...

Page 27: ...troller of 3 units or more can not be connected to the indoor unit within the same group 3 Do not connect together the terminal blocks TB5 of the in door unit connected to different outdoor units 4 Replacement of the power supply selecting connector CN41 on the outdoor unit should be done only on one outdoor unit 5 Grounding of S terminal of the centralized control terminal block TB7 on outdoor un...

Page 28: ...he one OC with CN40 replaced to the earth screw of the electrical parts box c MA remote controller wiring The same as 1 1 For 2 remote controller operation The same as 1 1 For indoor unit group operation The same as 1 2 d LOSSNAY connection The same as 1 2 e Switch setting Address setting is required as follows 1 Indoor unit 2 LOSSNAY 3 MA remote controller 4 Outdoor unit Main unit Sub unit Main u...

Page 29: ...t together the terminal blocks TB5 of the in door unit connected to different outdoor units 6 When the total number of indoor units exceeds 26 units In cluding that above Type 200 a transmission booster is re quired Interlocking with ventilation Example to use shielded wire Group Group LC LC Notes 1 Leave SW2 1 as OFF when connecting LM adapter only 2 LM adapter requires the power source of 1 phas...

Page 30: ...ped with the indoor unit address Conduct initial setting by the system controller with the same setting detail of indoor unit applied in MA remote controller wiring When setting address to 100 make it 50 Order Unit or controller Address Setting method Caution Factory setting range setting Set the lowest address within a same group to the indoor unit desired to be the main unit Set to the main unit...

Page 31: ...lecting connector CN41 on the outdoor unit should be done only on one outdoor unit 5 Grounding work is required for S terminal of the centralized control transmission block TB7 on one outdoor unit only 6 The system controller connectable to the indoor outdoor trans mission line counts for 3 sets maximum While G 50 counts for only 1 set 7 When the total number of indoor units exceeds 26 sets the sy...

Page 32: ...nit group operation The same as 1 2 d LOSSNAY connection Apply jumper wiring to connect A B terminals of the terminal block TB5 on IC to the terminal block TB5 on the indoor outdoor transmission line terminal block TB5 on Lossnay LC with non polarity two wires The interlocking registration of the indoor unit and Lossnay is required from the system controller For the registration method see the ins...

Page 33: ... 3 Do not connect the TB5 s Terminal block of the indoor units that are connected to different outdoor units 4 Replace CN41 power supply switch connector on outdoor units on only one of the outdoor units 5 Ground the S terminal of TB7 on only one of the outdoor units 6 Transmission line booster is necessary when the total number of connected indoor units exceeds 20 19 with 1 BC and 18 with 1 BC an...

Page 34: ...lock on the IC to the terminals on the M NET remote controller e Switch setting Address setting is required as follows 1 Indoor unit 2 LOSSNAY 3 M NET remote controller 4 Outdoor unit Main unit Sub unit Main unit Sub unit IC OC LC RC RC 01 50 01 50 51 100 101 150 151 200 Order Unit or controller Address Setting method Caution Factory setting range setting 00 00 101 00 Starting with the number main...

Page 35: ...ans mission line booster is required 9 When the total number of indoor units exceed 16 sets and they include Type 200 or above the transmission line booster is required Example to use shielded wire Group Group Note 2 System controller Notes 1 Leave SW2 1 as OFF when connecting LM adapter only 2 LM adapter requires the power source of 1 phase AC 230V Note 1 Note 1 Group Replacement of the power sup...

Page 36: ...ote controller with system controller Initially set the same setting detail as that of indoor unit group with system controller 100 digits are not required to set When setting the address as 200 make it 00 Set so that not duplicating with the indoor unit addresses When setting address to 100 make it 50 Order Unit or controller Address Setting method Caution Factory setting range setting Set the lo...

Page 37: ...To downstream unit Do not use a charging cylinder Using a charging cylinder may cause the refrigerant to deteriorate Do not use existing refrigerant piping The old refrigerant and refrigerator oil in the existing piping contains a large amount of chlorine which may cause the refrigerantor oil of the new unit to deteriorate Store the piping to be used during installation indoors and keep both ends ...

Page 38: ...m 3 Mixed line and header branching system Note The total model names downstream in the table below represent that viewed from A point in the above figure Note The branch piping can not be branched again after header branching Outdoor unit First branch Branch joint Branch joint Indoor Branch header Cap To downstream unit Item Piping section Allowable value Total piping length A B C a b c d e Less ...

Page 39: ...Heat exchanger Fan guard Heat exchanger Fan guard Components of the Outdoor Unit 1 Appearance of the Components and Refrigerant Circuit P200 P250 P300 P350 Types Front view of the unit Rear view of the unit ...

Page 40: ...lve Liquid side ball valve Low pressure check joint Drier 4 way valve 21S4a Discharge muffler Sub cool coil Accumulator Oil separator Low pressure pressure sensor 2 way valve SV5b 4 way valve 21S4b Linear expansion valve LEV1 P200 P250 P300 P350 Types Front view of the refrigerant circuit Rear view of the refrigerant circuit ...

Page 41: ... 39 Heat exchanger Fan guard Heat exchanger Fan guard P400 type Front view of the unit Rear view of the unit ...

Page 42: ...ow pressure check joint Accumulator Inverter compressor Discharge muffler High pressure check joint Drier Gas side ball valve Liquid side ball valve Accumulator Sub cool coil Oil separator 2 way valve SV5c 2 way valve SV5b Linear expansion valve LEV1 P400 type Front view of the refrigerant circuit Rear view of the refrigerant circuit ...

Page 43: ... 41 Fan guard Heat exchanger Fan guard Heat exchanger P450 P500 P550 P600 P650 Types Front view of the unit Rear view of the unit ...

Page 44: ...ensor 4 way valve 21S4b 4 way valve 21S4a 4 way valve 21S4c 4 way valve 21S4b 4 way valve 21S4c Low pressure check joint Low pressure pressure sensor High pressure check joint Drier Oil tank Gas side ball valve Liquid side ball valve Linear expansion valve LEV1 P450 P500 P550 P600 P650 Types Front view of the refrigerant circuit Rear view of the refrigerant circuit Front Rear ...

Page 45: ...al block TB3 INV board Choke coil L1 L2 Transformer DCL back Noise filter Rush current protection resistor R11 R12 Electromagnetic relay 52C1 Smoothing capacitor C11 C12 DCCT P250 P400 types only Gate amp board G A board Diode stack DS1 FAN board ACCT U phase ACCT W phase 2 Control Box P200 P400 Types Appearance Under the circuit board cover ...

Page 46: ... board INV board Choke coil L1 L2 Transformer DCL back Gate amp board G A board FAN board Diode stack DS Smoothing capacitor C11 C12 Rush current protection resistor R11 R12 Electromagnetic contactor 52C1 Noise filter Electromagnetic contactor 52F Fuse AC660V 50A Electromagnetic contactor 52C2 Overcurrent relay 51C2 P450 P650 Types Appearance Under the circuit board cover ...

Page 47: ...3B LD2 CNAC3 Power output 3L1 1L2 CN20 Power intput 5L1 CN21 Power intput 3L2 1N LD1 Service LED SW5 SW4 SW3 SW2 SWU2 SWU1 SW1 CNLVB CN3S CN3D CN3N CNRS3A CNS1 CNS2 CN40 CN41 CNRT1 CNOUT1 CN52C Control for 52C1 CN51 3 4 Compressor ON OFF 3 5 Trouble CN38 3 Circuit Board 1 Main board ...

Page 48: ...ply 1 2DC30V 1 3DC30V 4 5DC7V 4 6DC12V 7 8DC7V CN15V2 Power supply for IPM control F02 CNVDC SW1 SW2 CN52C CNFAN CNRS1 CNRS2 Serial transmission for MAIN board CNCT2 CNAC2 Power Source 5L2 3N 1G CNTH CNCT CNDR2 2 INV board ...

Page 49: ... input CNRT2 1 5 1 3 CNCH CH12 Power output 1 3 AC220 240V CN51C2 51C2 contact input CN52F 52F driving output 1 3 AC220 240V CN52C2 52C2 drivingoutput 1 5 AC220 240V 4 Relay board CNVDC DC bus voltage input 1 3 LED1 LED2 SW2 CNTR IPM back CNINV Fan motor output Fuse CNRS2 3 FAN board ...

Page 50: ... 48 CNFG CNL2 CNL1 CNOUT Controlled source output CNIN Controlled source input 5 Filter board CNDR1 CN15V1 CNDC1 CNDC2 CNIPM1 6 G A board ...

Page 51: ...t has both MA remote controllers and M NET remote controllers MA remote controller wires between indoor units require rewiring Indoor unit and remote controller addresses must be changed or the registration information must be changed using MELANS M NET ME Remote Controller Notes 2 4 MA remote controller Notes 1 4 MA remote controller Notes 1 2 A system using an MA remote controller System using a...

Page 52: ... displaying the LOSSNAY address at INDOOR UNIT ADDRESS and the in door unit address at INTERLOCKED UNIT ADDRESS NOTE INDOOR UNIT ADDRESS and INTERLOCKED UNIT ADDRESS are displayed at the same time To confirm the addresses go to 2 Registered address confirmation Displays the unit type Indoor unit in this case will flash as a registration error If the registered indoor unit does not exist If registr...

Page 53: ...A Group registration information confirmation A Displaying GROUP REGISTRATION Each time you press the E Timer selection button the registered indoor unit address No and unit type are displayed Registered Not registered When there is one registration one address No is displayed no matter how many times the button is pressed When there are multiple registrations ex 011 012 013 the address Nos are di...

Page 54: ...A Operation mode display selection mode AUTO mode heating cooling display selection When the AUTO mode was selected with the remote controller the indoor unit is judged from the room temperature and heating or cooling is performed automatically In this case AUTO COOLING or AUTO HEATING is displayed at the remote controller However only AUTO without COOLING or HEATING can also be displayed B Room t...

Page 55: ...ent range in the cool dry mode is displayed The lower limit temperature of the set temperature display flashes This temperature value can be set and changed Lower limit temperature adjustment range 19 C 30 C Upper limit temperature 30 C is fixed Only the lower limit temperature can be changed When set temperature adjustment range was set to 24 C to 30 C 3 When the TEMP button 2 is pressed after th...

Page 56: ...on button and confirm the LOSSNAY address registered at the set indoor unit address Confirmation end display When LOSSNAY is connected The indoor unit address and IC and registered LOSSNAY address and LC are alternately displayed FUNCTION FUNCTION Indoor unit address and indoor unit display LOSSNAY address display and LOSSNAY display FUNCTION FUNCTION Indoor unit address LOSSNAY address FUNCTION F...

Page 57: ...Power circuit board 1 INV BOARD CNDC2 black CN15V2 CNDR2 TB3 M1 M2 S M2 M1 TB7 1 2 3 1 2 shield F02 700VDC 2A T red white black blue black white red white detection circuit detection circuit detection circuit red white black blue red black L1 L2 L3 N Motor Compressor F01 250VAC 2A T Refer to the service handbook about the switch operations U W 2 CNRS2 1 2 3 4 5 6 7 Inverter controller box PU H Y P...

Page 58: ... 10 SWU2 Unit address setting SWU1 1 CN52C yellow SV 5b CN38 green CN36 CN35 red CN33 X02 CN32 X01 X09 X08 X03 CNS2 blue CNS1 blue CH11 1 2 3 Z20 1 2 3 1 2 3 1 2 3 1 2 3 4 5 6 1 2 3 4 5 6 7 8 9 2 1 2 1 3 2 1 2 1 3 2 1 3 2 1 8 7 6 5 4 3 2 1 TH6 TH5 TH7 TH11 63LS R22 63HS R23 1 2 3 1 2 3 CN02 CNTYP1 red CNL black CN01 CNTYP4 SV1 CNH CNTYP5 CN20 21S 4b CN21 blue F01 250VAC 6 3A T F02 250VAC 6 3A T 1 ...

Page 59: ...OX BODY 1 2 3 4 2 1 2 1 TB3 TB2 S B A A B S 2 1 2 1 CN2 CN4 CN3 C B CN1 1 2 3 4 5 M NET transmission line Outdoor unit side M NET transmission line Additional indoor unit side Surge Absorber DSA1 Varistor ZNR1 2 Choke coil Transmission L Earth terminal Noise Filter Surge absorber board Switching Power Supply Circuit board Fuse NAME SYMBOL SYMBOL EXPLANATION Power source TB3 TB2 TB1 F N F S A B S P...

Page 60: ... COMP O S CJ1 CJ2 63HS 63LS 63H SV1 HEX F HEX B SV5b TH8 TH11 TH5 TH6 TH7 CP2 ST8 LEV1 SCC ST4 ST3 CP1 Drier ST7 ST6 ACC BV1 BV2 ST1 ST2 Refrigerant Circuit 1 Refrigerant Circuit Diagram PUHY P200 P250 P300 P350YGM A ...

Page 61: ... 59 21S4b COMP O S CJ2 63LS SV1 HEX F HEX B SV5b TH8 TH11 TH5 TH6 TH7 CP2 ST8 LEV1 SCC ST4 ST3 CP1 Drier ST7 ST6 ACC BV1 BV2 ST1 ST2 CJ1 63HS 63H PUY P200 P250 P300 P350YGM A ...

Page 62: ... 60 21S4c 21S4b 21S4a TH6 CP1 COMP O S CJ2 63LS SV1 HEX F2 HEX F1 HEX B TH8 TH11 TH5 TH7 CP3 ST9 ST8 ST6 Drier LEV1 SCC SV5c SV5b ST11 ST10 ACC BV1 BV2 ST1 ST2 CJ1 63HS 63H PUHY P400YGM A ...

Page 63: ...OMP 2 Oil Tank COMP 1 O S O S CJ3 CJ1 63H2 63H1 63HS ST7 ST6 ST5 SV1 SV3 CV1 CV2 HEX2b B HEX1b F TH5 TH8 SCC CP3 TH7 ST9 Drier LEV1 ST8 SV5c SV5b HEX2a B HEX1a F ST2 ST13 ST12 ST11 ST10 CJ2 63LS BV2 ACC BV1 ST1 61 PUHY P450 P550 P600 P650YGM A ...

Page 64: ...s only 1 Detects high pressure 2 Protects high pressure 1 Controls frequency 2 Controls defrost during heating operation 3 Controls LEV1 by detecting sub cool at the heat exchanger outlet using HPS data and TH5 reading 1 Detects discharge temperature 2 Protects high pressure 1 Detects outdoor temperature 2 Controls fan operation Controls LEV1 using TH5 TH7 and TH8 Controls inverter cooling fan usi...

Page 65: ...220 240V CH11 CH12 1280Ω 45W AC220 240V De energized cooling cycle Energized heating cycle AC220 240V De energized cooling cycle Outdoor unit heat exchanger capacity 100 Energized cooling cycle Outdoor unit heat exchanger capacity 50 or heating cycle AC220 240V De energized cooling cycle Outdoor unit heat exchanger capacity 100 Energized cooling cycle Outdoor unit heat exchanger capacity 25 or hea...

Page 66: ...ytime after power on Switch Function Function according to switch setting Switch setting timing OFF ON OFF ON SWU SW2 1 2 1 2 3 4 5 6 7 8 9 10 Unit address setting Centralized control switch Deletion of connection information Deletion of error history Refrigerant amount adjustment Forced defrost Defrost timer setting Test run valid invalid Test run ON OFF Defrost start temperature Defrost end temp...

Page 67: ...s Error detection enabled 0 Error detection disabled 1 Anytime after power on Always leave it to ON Note 1 Except for SW2 1 all are set to OFF at factory shipment Unless otherwise specified set the switch to OFF where indicated by which may be set to a certain setting for a reason Note 2 Leave SW1 1 off during normal operation If it is turned on errors cannot be detected and the unit may be damage...

Page 68: ...Provided 2500h Effective Thermo ON signal display Always at heat Low speed Set airflow Effective Effective Cooling only Provided Provided Provided 2nd setting Ineffective Always ineffective for PKFY P VAM Not provided for PKFY P VAM Ineffective ON setting for floorstanding Cooling capacity saving for PKFY P VAM effective ineffective At unit stopping at remote controller OFF SW3 Note When both SW1 ...

Page 69: ... connector Set to the option to install the high efficiency filter Always after powering Always after powering Always after powering Always after powering Ceiling height 3 3 5m 2 2 8m 1 2 3m 1 2 3 2 way 4 0m 3 3m 4 2m 3 5m 3 way 3 6m 3 0m 4 0m 3 3m 4 2m 3 5m 4 way Values in the parenthese are for P32 80 types 3 2m 2 7m 3 6m 3 0m 4 2m 3 5m SWB SWA 3 2 1 PCFY P VGM E PDFY P20 80VM E PEFY P20 80VMM E...

Page 70: ...ilure return when the schedule timer is connected Sets to No when not desiring to display Cooling or Heating Sets to No when not desiring to display inlet temperature Address setting range Setting method Main remote controller 101 150 Set to the lowest indoor main unit address 100 Sub remote controller 151 200 Set to the lowest indoor main unit address 150 Setting of rotary switch Address No 01 99...

Page 71: ...hermo Defros ting Time Stop OFF ON Compressor Bypass solenoid valve SV1 4 minute 2 minute 8 minute 3 minute 2 Controlling the Outdoor Unit 1 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 ...

Page 72: ... does not meet the capacity requirement No 2 compressor will start its operation 2 No 2 compressor going from in operation to stop When an operation of both No 1 and No 2 compressors exceeds the capacity requirement No 2 compres sor will stop its operation 2 Pressure limit The maximum limit of high pressure Pd is set for each frequency level If this limit is exceeded the frequency will be reduced ...

Page 73: ... once started unless the piping temperature exceeds 25 C within 2 minutes in which case the operation will stop Above 20 C within 2 minitues for P400 type models and above 4 Problems during defrost operation If a problem is detected during defrost operation the operation will be stopped and the defrost prohibition time based on the integrated compressor operation time will be set to 20 minutes 5 C...

Page 74: ...has been completed 7 Outdoor unit fan 1 Control method The air volume of outdoor unit fan is controlled by the inverter control to maintain a constant evaporation temperature 0 C 0 71 MPa during cooling operation and constant condensing temperature 49 C 2 88MPa during heating operation depending on the required capacity The capacity of the outdoor unit heat exchanger is controlled by the 4 way val...

Page 75: ...cle Note 2 SV5b and SV5c are not energized when it is open and energized when it is closed Note 3 While the unit is stopped 21S4b and 21S4c are not energized and in cooling cycle and SV5b and SV5c are opened Heat exchanger capacity Inverter control Remarks 21S4b ON SV5b ON 5 100 50 21S4b OFF SV5b OFF 10 100 100 Cooling 21S4b ON SV5b OFF 10 100 100 Heating 21S4b OFF SV5b OFF 0 100 Defrost P400 P650...

Page 76: ...rror reset on the remote controller Example1 1 Starting an emergency operation 1 Occurrence of error error source and error code displays on the remote controller 2 Error reset on the remote controller 3 If the remote controller displays the type of error that allows an emergency operation as in above refer to the table below the unit will begin retry operation Same usual operation as the operatio...

Page 77: ...rect 100 100 0 75 50 50 Demand control steps Adaptor for external input PAC SC36NA CN3D X Y X Y Maximum allowable length of wiring is 10 m SW1 NIGHT MODE or demand command SW2 Demand command X Y Relay contact rating DC1mA SW1 SW2 Orange 1 Brown 2 Red 3 Remote controller board Relay circuit Outdoor unit controller board Power supply to relay To be acquired on site Example of wiring connection OPEN ...

Page 78: ...to outdoor unit to 2 Error mode Error stop Error display Protection func tion self holding Error command to outdoor unit Indoor unit LEV fully closed Normal operation Trouble observed Stop YES NO NO NO YES YES NO YES NO YES YES NO Note 3 YES NO Note 3 YES NO Note 3 Note 2 Note 1 Notes 1 Indoor unit LEV fully closed Opening 41 2 The error mode includes that of indoor units and outdoor units At indo...

Page 79: ...er In case indoor unit is not grouped to remote controller HO display on remote controller continues blinking even after 3 minutes after turning on power source 2 Two trouble modes include indoor unit side trouble and outdoor unit side trouble In the case of indoor unit side trouble error stop is observed in outdoor unit only when all the indoor units are in trouble However if one or more indoor u...

Page 80: ...ning 3 All solenoid valves OFF 4 Outdoor unit fan stop 5 52C1 OFF 1 Inverter frequency control 2 Indoor unit LEV LEV1 control 3 Solenoid valve control 4 Outdoor unit fan control 5 52C1 control Normal operation Trouble observed Stop Note 1 YES Note 1 The indoor fan operates at the set notch under cooling regardless of thermostat ON OFF 78 2 Operation under each mode 1 Cooling operation ...

Page 81: ...ndition Defrost operation for 10 minutes or more or outdoor piping temperature refer to 5 Defrost operation control of 2 ControlIing the Outdoor Unit 1 Indoor unit fan stop 2 Inverter defrost frequency control 3 Indoor unit LEV fully closed 4 Solenoid valve control 5 Outdoor unit fan stop 6 LEV1 control 7 52C1 control Defrost end Defrost end Return to heating operation Note 1 2 Note 1 2 1 Indoor u...

Page 82: ...and solenoid valve accompanying compressor ON are the same as those in cooling operations 2 Thermostat is always kept on in test run and indoor and outdoor unit intermittent operation ON time is a little longer than normal operations 1 Indoor unit fan stop 2 Inverter output 0Hz 3 Indoor unit LEV LEV1 fully closed 4 Solenoid valve OFF 5 Outdoor unit fan stop 6 52C1 OFF 1 Outdoor unit Compressor int...

Page 83: ...he power of the outdoor unit STAND BY DEFROST ERROR CODE D A I L Y AUTO OFF CENTRALLY CONTROLLED CLOCK REMAINDER ON OFF ßC 1Hr NOT AVAILABLE ßC CHECK MODE FILTER CHECK TEST RUN LIMIT TEMP ON OFF TEMP FILTER CHECK TEST ON OFF CLOCK PAR F27MEA TIMER SET Test run display ON OFF lamp ON OFF button Vertical air direction button Test run button Ventilation button The illustration shows MA remote control...

Page 84: ... high if normal SH 20K or lower 4 5 6 Inlet super heating is low if normal SH 10K or higher Refrigerant volume tends toward insufficient Refrigerant volume tends toward overcharge Condition Judgment 1 Low pressure saturation temperature Low pressure shell compressor During cooling operation the amount of refrigerant in the accumulator is the smallest when all indoor units are in operation Discharg...

Page 85: ...ight table In the calculation results round up fractions smaller than 0 01kg Example 14 04kg 14 1kg Example PUHY P650YGM A Outdoor unit model name P200 Refrigerant charge volume 7 0kg P250 9 5kg P300 9 5kg P350 9 5kg P400 13 0kg P450 22 0kg P500 22 0kg P550 22 0kg P600 22 0kg P650 22 0kg Total capacity of connected indoor unit α 80 81 160 1 5kg 161 330 2 0kg 331 480 2 5kg 481 630 3 0kg 631 710 4 0...

Page 86: ...become unsuitable 1 The refrigerant volume is suitable When the refrigerant volume for TH5 TH7 is more than 5K at the outdoor unit and 5 to 15K for SH at the indoor unit 2 The current volume is suitable however may become unsuitable after a certain length of time When the refrigerant volume for TH5 TH7 is less than 5K at the outdoor unit or less than 5K for SH at the indoor unit 2 There are times ...

Page 87: ...udgment Wait 5minutes before making next judgment Add a small amount of refriger ant at low pressure service port Add a small amount of refriger ant at low pressure service port Add a small amount of refrigerant at low pressure service port Is Tc TH5 8K Caution Ensure that no refrigerant is released into the atmosphere Caution Use liquid refrigerant to fill the system Wait 5 minutes before making ...

Page 88: ...5 minutes maximum to warm up model 200 Fan operation will be done during the warming up The system is under starting up Operate the remote controller after the blinking of HO is disappeared At stopping of cooling operation drain pump oper ates for 3 minutes further Run drain pump if drain water is generated even un der stopping Symptom Remote controller display Cause Indoor unit does not run while...

Page 89: ...utdoor Outlet Sectional unit Suction Compressor C temp Shell bottom Compressor SCC outlet TH7 Bypass outlet TH8 Indoor LEV inlet unit Heat exchanger outlet 27 0 19 0 27 0 19 0 27 0 19 0 35 0 24 0 35 0 24 0 35 0 24 0 4 4 4 4 71 63 50 20 100 71 63 20 125 80 63 32 5 4 4 5 5 10 10 10 45 45 45 Hi Hi Hi 11 0 13 9 13 9 Compressor frequency Hz 10 3 9 4 13 0 11 9 16 1 14 7 380 415 380 415 380 415 253 441 3...

Page 90: ...ulator Inlet Outdoor Outlet Sectional unit Suction Compressor C temp Shell bottom Compressor SCC outlet TH7 Bypass outlet TH8 Indoor LEV inlet unit Heat exchanger outlet 27 0 19 0 27 0 19 0 27 0 19 0 35 0 24 0 35 0 24 0 35 0 24 0 4 4 4 4 140 125 63 32 200 100 63 32 200 125 80 50 5 4 4 5 5 10 10 10 45 45 45 Hi Hi Hi 14 7 18 2 21 6 Compressor frequency No 1 No 2 Hz 19 2 17 6 22 6 20 7 22 9 21 0 380 ...

Page 91: ...TH12 Heat exchanger outlet TH5 Accumulator Inlet Outdoor Outlet Sectional unit Suction Compressor C temp Shell bottom Compressor SCC outlet TH7 Bypass outlet TH8 Indoor LEV inlet unit Heat exchanger outlet 27 0 19 0 35 0 24 0 4 4 250 125 100 32 5 10 45 Hi 22 1 Compressor frequency No 1 No 2 Hz 26 3 24 0 380 415 388 387 325 261 204 3 02 0 86 84 87 42 15 15 21 17 37 42 25 8 24 13 PUHY P550 27 0 19 0...

Page 92: ...at exchanger outlet TH5 Accumulator Inlet Outdoor Outlet Sectional unit Suction Compressor C temp Shell bottom Compressor SCC outlet TH7 Bypass outlet TH8 Indoor LEV inlet unit Heat exchanger outlet 27 0 19 0 35 0 24 0 5 5 200 5 10 55 Hi 28 3 Compressor frequency No 1 No 2 Hz 29 6 27 1 380 415 324 324 387 362 222 388 324 387 362 222 246 2 93 0 84 84 86 41 15 15 19 17 47 43 24 8 24 12 PUHY P650 27 ...

Page 93: ...Pa Discharge TH11 Heat exchanger outlet TH5 Accumulator Inlet Outdoor Outlet Sectional unit Suction Compressor C temp Shell bottom Compressor Indoor LEV inlet unit Heat exchanger outlet 20 0 20 0 20 0 7 0 6 0 7 0 6 0 7 0 6 0 4 4 4 4 71 63 50 20 100 71 63 20 125 80 63 32 5 4 4 5 5 10 10 10 45 45 45 Hi Hi Hi 11 0 13 9 13 9 Compressor frequency Hz 10 0 9 2 12 8 11 7 15 3 14 0 380 415 380 415 380 415 ...

Page 94: ...harge TH11 TH12 Heat exchanger outlet TH5 Accumulator Inlet Outdoor Outlet Sectional unit Suction Compressor C temp Shell bottom Compressor Indoor LEV inlet unit Heat exchanger outlet 20 0 20 0 20 0 7 0 6 0 7 0 6 0 7 0 6 0 4 4 4 4 140 125 63 32 200 100 63 32 200 125 80 50 5 4 4 5 5 10 10 10 45 45 45 Hi Hi Hi 14 7 18 2 21 6 Compressor frequency No 1 No 2 Hz 18 6 17 0 20 9 19 2 23 3 21 4 380 415 380...

Page 95: ... before accumulator MPa Discharge TH11 TH12 Heat exchanger outlet TH5 Accumulator Inlet Outdoor Outlet Sectional unit Suction Compressor C temp Shell bottom Compressor Indoor LEV inlet unit Heat exchanger outlet 20 0 7 0 6 0 4 4 250 125 100 32 5 10 45 Hi 22 1 Compressor frequency No 1 No 2 Hz 26 8 24 5 380 415 400 406 332 254 2 89 0 68 76 81 4 1 1 1 1 24 27 39 72 PUHY P550 20 0 7 0 6 0 4 4 250 140...

Page 96: ...ccumulator MPa Discharge TH11 TH12 Heat exchanger outlet TH5 Accumulator Inlet Outdoor Outlet Sectional unit Suction Compressor C temp Shell bottom Compressor Indoor LEV inlet unit Heat exchanger outlet 20 0 7 0 6 0 5 5 200 5 10 55 Hi 28 3 Compressor frequency No 1 No 2 Hz 29 9 27 4 380 415 332 332 406 373 229 400 332 406 373 229 2 85 0 66 79 82 3 0 0 1 1 26 29 38 74 PUHY P650 20 0 7 0 6 0 5 5 5 1...

Page 97: ...heat protection 4240 4245 Note1 Overload protection 4250 4255 101 IPM abnormality 102 ACCT overcurrent abnormality H W peak detect 103 Note1 DCCT overcurrent abnormality H W peak detect 104 IPM short grounding abnormality 105 Load short abnormality 106 ACCT overcurrent abnormality S W detect peak current 107 ACCT overcurrent abnormality S W detect effective current 4260 4265 Note1 Cooling fan abno...

Page 98: ...t bit error 7100 Total capacity abnormality 7101 Capacity code abnormality 7102 Error in the number of connected units 7105 Address setting abnormality 7106 Characteristics setting abnormality LC 7110 Connection number setting abnormality 7111 Remote control sensor abnormality 7113 Functional restriction error 7130 Di 7117 Unset model error 7116 System error before flashing operation ff Note1 Comp...

Page 99: ...reliminary bus voltage drop abnormality S W detect 109 Preliminary bus voltage rise abnormality S W detect 110 Preliminary bus voltage abnormality H W detect 111 Preliminary logic circuit for H W error detect abnormality 4330 4230 4335 4235 Note1 Preliminary heat sink overheating abnormality 4340 4240 4345 4245 Note1 Preliminary overload abnormality 4350 4250 4355 4255 101 Preliminary IPM abnormal...

Page 100: ...garded as the first time and the process shown in 1 is observed 5 30 minutes after stop of outdoor unit is intermittent fault check period with LED displayed 1 Gas leak gas shortage 2 Overload operations 3 Poor operations of indoor LEV 4 Poor operations of OC controller LEV1 5 Poor operations of ball valve 6 Outdoor unit fan block motor trouble poor operations of fan controller Heating Heating onl...

Page 101: ...od with LED displayed 6 Error stop is observed immediately when pressure switch 4 15 MPa operates in addition to pressure sensor 1 Poor operations of indoor LEV Heating 2 Poor operations of ball valve 3 Short cycle of indoor unit 4 Clogging of indoor unit filter 5 Fall in air volume caused by dust on indoor unit fan 6 Dust on indoor unit heat exchanger 7 Indoor unit fan block motor trouble 2 7 Ris...

Page 102: ...arts up again 2 If the discharge SH 10K is detected again within 30 minutes after the outdoor unit stops second detection an abnormal stop is applied and 1500 is displayed 3 If discharge SH 10K is detected more than 30 minutes after the outdoor unit stops the state is the same as the first detection and the same operation as 1 above takes place 4 The abnormal stop delay period is in effect for 30 ...

Page 103: ...no dust around the drain pump intake 3 Check the clogged drain pipe Check whether there is no clogging outside of the pipe body 4 Check the return water Pour approximately 1 liter water in the drain pump and start the drain pump When the water level in the drain pan becomes stably lower stop the pump and check the amount of the return water to the drain pan When a large amount of water returns the...

Page 104: ... operation cannot be detected during OFF Short circuit detected 90 C or more Open circuit detected 20 C or less 1 Thermistor failure 2 Connector contact failure Insert failure 3 Disconnected wire or partial disconnected wire for thermistor 4 Indoor board detection circuit failure Thermistor resistance check 0 C 6 0kΩ 10 C 3 9kΩ 20 C 2 6kΩ 30 C 1 8kΩ 40 C 1 3kΩ Connector contact failure If no fault...

Page 105: ...rds CN20 and CN21 4108 Over current protection 1 First detection If 51C2 is started during the operation of No 2 compressor the outdoor unit stops once turns to anti restart mode for 3 minutes and restarts after 3 minutes Set value of the over current relay 55A 2 Second detection If 51C2 is started again within a minute after restarting in compliance with 1 above the unit makes an error stop and t...

Page 106: ...bnormality motor abnormality LOSSNAY 1 The motor keep running even if the power is OFF 2 The thermal overload relay 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 1 Defective board 2 Motor malfunction 3 Solenoid switch malfunction Replace the boa...

Page 107: ...ck the THHS sensor resistance Ensure that the heat sink temperature is 55 C or more and that 220 240V is applied to the inverter PCB connector CNFAN when the inverter is on Check the cooling fan operation under the above operating conditions Refer to 9 4 6 2 Check for compressor ground fault or coil error 5 Check the inverter circuit trouble In the case of 4230 When the heat sink temperature THHS1...

Page 108: ... THHS 90 C is detected for 10 minutes in a row during the inverter operation Type P200 Type P250 Type P300 Type P350 Type P400 Type P450 Type P500 Type P550 Type P600 Type P650 27 Arms 27 Arms 27 Arms 27 Arms 27 Arms 27 Arms 27 Arms 27 Arms 27 Arms 27 Arms 4250 4255 IPM abnomality Error details No 101 ACCT overcurrent abnormality Error details No 102 DCCT overcurrent abnormality Error details No 1...

Page 109: ...r is not set up or contact failure 5 Indoor board failure detection circuit Themistor resistance check 0 C 15kΩ 10 C 9 7kΩ 20 C 6 4kΩ 30 C 4 3kΩ 40 C 3 1kΩ Check the contact of the connector If no fault is found the indoor board is a failure When shorting or open of the sensor is detected while the thermo is ON the restart prevention mode will be operated for 3 minutes If there is no recovery afte...

Page 110: ...art the unit must be restarted 3 When shorting or open is detected again third detection during the operation after the restart the outdoor unit will make an error stop 4 When shorting or open of the thermistor is detected just before the restart the unit will make an error stop and check code 5101 5103 5104 5105 5106 5107 and 5108 will appear 5 LED display which indicates the grace period will ap...

Page 111: ... ACCT contact CNDR2 and G A Board CNDR1 Replace the ACCT sensor Check the connector connection on the INV board CNCT DCCT DCCT side Check DCCT installation direction Replace the DCCT sensor Replace the INV board Refer to 9 4 6 2 1 Check the INV board error detection circuit Refer to 9 4 6 2 2 Check for compressor ground fault or coil error Refer to 9 4 6 2 5 Check the inverter circuit trouble Chec...

Page 112: ...ler etc have the same address Example Error display of the remote controller 6600 01 Unit No 1 detected the error Two Units No 1 or more are in a same system Search for the unit which has the same address with that of the source of the trouble When the same address is found turn off the power source of outdoor unit and indoor unit for 5 minutes or more after modifying the address and then turn on ...

Page 113: ...eck the noise Transmission circuit bus busy abnormality 1 Collision of data transmission Transmission can not be per formed for 4 10 consecutive minutes due to collision of data transmission 2 Data can not be transmitted on transmission line due to noise for 4 10 consecutive minutes Note The address attribute shown on remote controller indicates the controller which has detected error Confirm supp...

Page 114: ...mission wiring at IC unit side 2 Faulty transmission wiring of RC 3 When remote controller address is changed or modified during operation 4 Faulty remote controller Shut down OC unit power source and make it again It will return to normal state at an accidental case When normal state can not be recovered check for the 1 4 of the cause Shut down both OC power source for 5 minutes or more and make ...

Page 115: ...r 7100 Capacity code setting error 7101 Connecting set number error 7102 Address setting error 7105 1 Cause of 1 3 of Cause for single refrigerant system 2 Disconnection or short circuit of transmission line of OC terminal block for centralized control TB7 3 Shut down of OC unit power source of one refrigerant system 4 Neglecting insertion of OC unit power supply connector CN40 5 Inserting more th...

Page 116: ...ty code setting error 7101 3 Cause of connecting number error 7102 4 Cause of address setting error 7105 5 Disconnection or short circuit of transmission line of OC unit terminal block for central control TB7 6 Power source shut down of OC unit 7 Trouble of OC unit electrical system Trouble of all IC 1 As same that for single refrigerant system 2 When using the power supply unit for transmission l...

Page 117: ...em 1 Error detected by OC unit Total capacity error 7100 Capacity code setting error 7101 Connecting number error 7102 Address setting error 7105 2 Disconnection or short circuit of transmission line of OC unit terminal block for central control TB7 3 Power source shut down of OC unit 4 Trouble of OC unit electrical system Trouble of all IC 1 As same that for single refrigerant system 2 When using...

Page 118: ...of all IC in one refrigerant system 1 Error detected by OC unit Total capacity error 7100 Capacity code setting error 7101 Connecting number error 7102 Address setting error 7105 2 Disconnection or short circuit of transmission line of OC unit terminal block for central control TB7 3 Power source shut down of OC unit 4 Trouble of OC unit electrical system Trouble of all RC 1 As same that for singl...

Page 119: ...ard c Make OC unit power source and wait for 5 minutes d Shut down OC unit power source and wait for 5 minutes e Turn off the dip switch SW2 2 provided on OC unit control circuit board f Make OC unit power source No relation with system Checking code Meaning detecting method Cause Checking method Countermeasure 6608 1 At the collision of mutual transmission data when transmission wiring is modifie...

Page 120: ...eck the main slave setting of the MA remote controller 5 Diagnose the remote controller Remote controller IM description Result OK No problem in the remote controller wiring specifications check NO Replace the remote controller 6832 6833 ERC Noise is the cause To 6 6 Check the transmission waveform and noise on the transmission signal of MA remote controller line 7 If no problem is present in item...

Page 121: ...or and outdoor units The capacity of Indoor unit can be confirmed by the self diagnosis function SW1 operation of indoor unit a Check whether the connection of units to the terminal block for indoor outdoor transmission wiring TB3 of outdoor unit is not exceeding the limitation See 1 2 left b Check for 2 3 and 4 c Check for the connection of transmission wiring to the terminal block for centralize...

Page 122: ...untermeasure 7110 7111 7113 7116 7117 7130 Check transmission booster and power supply a Replace the remote controller with the one with built in temperature sensor Check all main board connectors and rectify faulty connection Check that the SW4 3 on the main board is OFF Check for the contact of the connector CNTYP1 4 5 on the main board Check the record of CNTYP1 4 5 Check the connected indoor u...

Page 123: ...on 5 Short circuit of the wire for the remote display output for the outdoor unit or reversed polarity connection of the relay 6 Indoor unit controller board failure 7 MA remote controller failure Factors Phenomena Checke method Handling 1 a Check voltage of the MA remote controller terminal among 1 to 3 i If the voltage is DC8 5 12V the remote controller is defective ii If there is no voltage Che...

Page 124: ...5 to the M NET transmission line of the indoor unit and the indoor controller board CN2M or disconnected connector Factors Phenomena Checke method Handling 2 When the factor 2 and 3 apply self diagnosis LED works and the check code 7102 will be displayed When turning on the remote controller operation SW a temporary operation display is indicated and the display lights out immediately and the unit...

Page 125: ...ire for the MA remote controller is connected incorrectly to the terminal block to the transmission line TB5 5 The M NET transmission line is connected incorrectly to the terminal block TB13 on the MA remote controller 7 The sub main setting of the MA remote controller is set to sub 8 More than 2 main MA remote controllers are connected 9 Indoor unit controller board failure MA remote controller c...

Page 126: ...the wire for the MA remote controller again Check for daisy chain Replace the MA remote controller Does the MA remote controller work properly when it is connected to the specified indoor unit Check for power supply Running group operation with the MA remote controller Does the unit work properly when the power is reset Replace the indoor unit control board when the unit starts running Centrally c...

Page 127: ...r source circuit failure judgment When the factor 2 and 3 apply self diagnosis LED of the outdoor unit works and the check code 7102 will be displayed Even if the operation SW on the remote controller is pressed the display remains unlit and the unit does not start running Power indicator does not appear on the screen When turning on the remote controller operation SW a temporary operation display...

Page 128: ...units are inserted into transmission lines Or in the system to which power supply unit for transmission line power supply of the outdoor unit CN40 is inserted into transmission line Factors Phenomena 3 HO display on remote controller does not disappear and ON OFF switch is ineffective NO NO NO YES YES YES NO YES YES YES NO NO NO YES Same symptom for all units in a single refrigerant system Check o...

Page 129: ...the centralized control transmission line of outdoor unit 10 In the system connected with MELANS power supply connector CN40 is inserted into the centralized control transmission line of outdoor unit 11 Short circuit of centralized control transmission line Factors Phenomena Checke method Handling 4 a Confirm the address of unit to be coupled b Check the connection of transmission line c Check the...

Page 130: ...essure Sensor Note Lower intake of low pressure sensor than actual pressure causes insufficient capacity b Observe difference between evaporating temperature Te and target evaporating temperature Tem by monitoring with LED Note Higher Te than Tem causes insufficient capacity Note When frequency does not rise even at higher Te than Tem frequency restriction by discharge temperature or high pressure...

Page 131: ...ay be affected At high discharge temperature Refer to 1102 At high pressure Refer to 1302 Check temperature difference between before and after a portion strainer distributor of low pressure piping where foreign matter may likely be clogged Significant temperature drop may indicate clogging Remove foreign matter inside piping Check inlet temperature and short cycle at indoor unit side To improve u...

Page 132: ...nt shutout 7 Refrigerant over charge error Notes 1 Freeze protection tripping only under cooling mode may be considered in addition to the above Freeze protection is detected by one or all indoor units 2 With some error codes emergency stop is not commenced even at the second stopping Factors Phenomena Checke method Handling 2 3 Check piping thermistor Refer to the page of outdoor unit fan Check t...

Page 133: ...ssion wave shape changes to other signal due to noise 6602 Transmission wave shape changes due to noise and can not be received 6607 normally thus providing no reply ACK Transmission can not be made continuously due to the entry of fine noise 6603 Transmission can be made normally but reply ACK or answer can not be 6607 issued normally due to noise 6608 Cause Erroneous operation Error code 1 1 Che...

Page 134: ...with different refrigerant systems One point earthing at outdoor unit Upper rank controller is used Earthing at the upper rank controller b Error is generated even though one point earth is being connected Earth shield at all outdoor units Connect to ground as shown in the user s manual 1 Wiring of transmission and power lines in cross ing 2 Wiring of transmission line with that of other system in...

Page 135: ...ssion cable and the communication between the MA remote control and indoor unit is cut off for three consecutive minutes a MA communication error 6831 will occur 2 Confirmation of transmission specifications and waveform 1 2msec bit 5 must be satisfied 2 Voltage across terminal No 1 2 must be within range shown on left A1 B2 No polarity Across terminal No 1 2 Power supply 8 5V to 12VDC Transmissio...

Page 136: ...cted 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 0 098MPa for low pressure on the LD1 display the affected pressure sensor is faulty b If the pressure is 4 15MPa for high pressure or higher the MAIN board is faulty 4 Disconnect the pressure sensor from the MAIN board and short out the No 2...

Page 137: ...n board and check the pressure that is displayed on LD1 a When the pressure that is displayed on LD1 is 0 0 098MPa The low pressure pressure sensor is defective b When the pressure that is displayed on LD1 is approximately 1 7MPa The main board is defective When the outdoor temperature is 30 C or less The main board is defective When the outdoor temperature is over 30 C Proceed to 5 4 Remove the l...

Page 138: ...right as you face the front of the unit and between the gas ball valve BV1 and the accumulator This circulation is for cooling When powered The electricity runs between the oil separator and the gas ball valve and between the heat exchanger and the accumulator This circulation is for heating Check the LED display and the intake and the discharge temperature for the 4 way valve to check whether the...

Page 139: ...of SV5b 2 way switching valve This valve closes when powered Check the LED display and the switching sound to check whether the valve has no faults When cooling the switching coincides with 21S4b When it is difficult to check by the sound check the temperature at the front and the back of the pipe to check whether the refrigerant flows Do not give an impact from outside as the outer hull will be d...

Page 140: ...tput is out of phase or remains ON con tinuously the motor cannot run smoothly but move jerkily and vibrates When the power is switched ON a 2200 pulse valve opening signal is output to make sure the valve s posi tion so that it is definitely at point A When the valve operates smoothly there is no sound from the LEV and no vibration occurs but when the valve is locked or E A it emits a noise Wheth...

Page 141: ... posi tion so that it is definitely at point A Pulse signal is output for approximately 17 seconds When the valve operates smoothly there is no sound from the LEV and no vibration occurs but when the valve is locked it emits a noise Whether a sound is being emitted or not can be deter mined by holding a screwdriver etc against it then placing your ear against the handle If there is liquid refriger...

Page 142: ...ration of this sound when the LEV is fully closed or fully open is abnormal Measure the resistance between the coils red white red orange brown yellow brown blue using a tester They are normal if the resistance is within 150Ω 10 Measure the resistance between the coils gray orange gray red gray yellow gray black using a tester They are normal if the resistance is within 46Ω 10 1 If you are checkin...

Page 143: ... pipe may be bent 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 m...

Page 144: ...ransmission line or ex ternal connection wiring run close to another power supply system or run through the same conduct pipe Contact the factory for cases other than those listed above Error display failure condition Measure inspection item 1 2 3 4 5 8 9 Inverter related errors 4250 4255 4220 4225 4230 4235 4240 4245 4260 4265 5301 0403 5110 Main power breaker trip Main power earth leakage breake...

Page 145: ... carries the IPM drive sig nal has been disconnected Disconnect the compressor wir ing and check the compressor Meg and coil resistance Perform the following 1 Reconnect the connector re moved at item 1 2 Disconnect the compressor wir ing 3 Turn on SW1 1 on the INV board Operate the outdoor unit after above steps Check the in verter output voltage Measure when the inverter out put frequency is sta...

Page 146: ...acement Replace the INV board IPM replacement Check the operation in 3 or 4 after replacing the IPM In the case of an output voltage un balance or error recurrence Replace the G A board In the case of an output voltage un balance or error recurrence after re placement Replace the INV board IPM replacement In the case of an output voltage un balance or error recurrence after re placement Replace th...

Page 147: ...edure for in dividual components of main inverter circuit a Diode Stack b IPM c Rush current protection resistor d Electromagnetic relay e DC reactor f Noise filter a There is a possibility that the wiring shorted momentarily Trace the short and repair b If a above is not the case there is a possi bility that there was a compressor failure A compressor ground fault can be consid ered Go to 2 2 3 T...

Page 148: ...ormally indicates plus Make sure that the resistance is not open Ω or not shorted to 0Ω For the resistance the margin of error is allowed The result that is more than double or half than the result that is measured at the same measurement point is not allowed Tester restriction Use the tester whose internal electrical power source is 1 5V or greater Use the dry battery powered tester The accurate ...

Page 149: ...lly after finishing other works For the wiring of the base for IPM observe the wiring diagram below carefully as it has many terminals 2 Coat the grease for radiation provided uniformly onto the radiation surface of IPM diode modules Coat the grease for radiation on the full surface in a thin layer and fix the module securely with the screw for fastening As the radiation grease attached on the wir...

Page 150: ...ed control DC24 30V Control circuit board To next unit Indoor unit M NET remote controller MA remote controller Power source system Control system DC5 30V TB1 AC380 415V Terminal block for power source Outdoor unit Fuse 6 3A Fuse 10A Fuse 2A G A board 52C1 Solenoid valve 4 way valve Power supply for transmission line Power supply for centralized control TB3 Terminal block for transmission line DC2...

Page 151: ...lenoid valve 4 way valve Outdoor unit AC220 240V TB2 A B DC17 30V TB5 TB15 DC8 5 12V Power circuit board Power source CN40 Power source A B or 1 2 Micro computer 5V Microcomputer Power source TB7 Terminal block for centralized control DC24 30V Control circuit board To next unit Indoor unit M NET remote controller MA remote controller TB3 Terminal block for transmission line DC24 30V M NET trans mi...

Page 152: ...1 and 2 and 1 and 3 of main board CNVCC1 Check voltage of outdoor unit power source terminal block TB1 Check fuse F02 on INV board Broken YES NO NO YES NO NO NO NO NO NO NO NO YES NO NO NO NO YES NO INV board G A board CNDC2 CNDC1 Check wiring inside outdoor unit G A board CNDC1 INV board CND2 42 52Ω Check voltage of TB3 by removing transmission line from TB3 Replaced Check whether power supply co...

Page 153: ...ee the next item 3 2 When Tc TH7 is less than 10K After the compressor stops wipe the refrigerant inside the system repair the leak perform evacuation and recharge new refrigerant Leak spot In the case of outdoor unit handle in the same way as heating season Tc self diagnosis switch TH7 self diagnosis switch 3 Stop all the indoor units and stop the compressor 1 To stop all the indoor units and the...

Page 154: ...all valves BV1 and BV2 4 Collect the refrigerant that remains inside the outdoor unit Do not discharge refrigerant into air into the atmos phere when it is collected 5 Repair the leak 6 After repairing the leak perform evacuation of the extended pipe for the indoor unit and open the ball valves BV1 and BV2 to adjust refrigerant 4 Leak spot In the case of outdoor unit Heating season 1 Collect the r...

Page 155: ... for a long time as the oil rapidly absorbs moisture Note The drained oil cannot be recycled 5 After draining oil from the refrigerant and the drain oil plug remove the metal fitting 1 or the flare nuts 2 places that connect the compressor and the equal oil pipe and bend the equal oil pipe so as not to apply an excess force 6 Close the equal oil pipe attachment point with a cap to prevent the oil ...

Page 156: ... for draining liquid Metal fitting2 Soundproof material 154 7 Collecting the Cooling Liquid from the Accumulator Only P450 P650 types 1 Perform evacuation inside the recovery cylinder 2 Connect the check joint for collecting liquid that is derived from the accumulator and the recovery cylinder with a connection pipe or hose that has predetermined withstand pressure Note When connecting the check j...

Page 157: ...eg LED By setting of DIP SW1 1 1 10 the unit operating condition can be observed with the service LED on the control circuit board For the relation of each DIP SW to the content see the table provided As shown in the figure below the LED consist of 7 segments is put in 4 sets side by side for numerical and graphic display 0 0 LED display 1 LED Monitor Display 1 How to read LED for service monitor ...

Page 158: ...istory data and the error detection time are saved in the service memory The error detection time saved in the service memory and the current time can be confirmed with the service LEDs The date and time data is all set to 00 as the default If a system controller that sets the time in the outdoor unit such as the G50A is not connected the time and days elapsed from the first time the power was tur...

Page 159: ...o 2 Unit No 3 Unit No 4 Unit No 5 Unit No 6 Unit No 7 Unit No 8 Unit No 9 Unit No 10 Unit No 11 Unit No 12 Unit No 13 Unit No 14 Unit No 15 Unit No 16 Unit No 17 Unit No 18 Unit No 19 Unit No 20 Unit No 21 Unit No 22 Unit No 23 Unit No 24 Unit No 25 Unit No 26 Unit No 27 Unit No 28 Unit No 29 Unit No 30 Unit No 31 Unit No 32 Relay output display 1 lighting to display Check display 1 OC error Check...

Page 160: ...8 0110010000 39 1110010000 40 0001010000 41 1001010000 42 0101010000 43 1101010000 44 0011010000 45 1011010000 46 0111010000 47 1111010000 48 0000110000 49 1000110000 50 0100110000 51 1100110000 52 0010110000 53 1010110000 54 0110110000 55 1110110000 56 0001110000 57 1001110000 58 0101110000 59 1101110000 Unit No 1 Unit No 2 Unit No 3 Unit No 4 Unit No 5 Unit No 6 Unit No 7 Unit No 8 Unit No 9 Uni...

Page 161: ...00101000 82 0100101000 83 1100101000 84 0010101000 85 1010101000 86 0110101000 87 1110101000 88 0001101000 89 1001 0101101000 1101101000 101000 90 91 92 0011101000 93 1011101000 94 0111101000 95 1111101000 96 0000011000 97 1000011000 98 0100011000 99 1100011000 100 0010011000 101 1010011000 High pressure Low pressure Tc Te Target condensor temp Tc Target condensor temp Te All temporary frequency C...

Page 162: ...00 135 1110000100 136 0001000100 137 1001000100 SW1 LED No 1234567890 Item LD1 LD2 LD3 LD4 LD5 LD6 LD7 LD8 Remarks 138 0101000100 139 1101000100 140 0011000100 141 1011000100 142 0111000100 143 1111000100 144 0000100100 145 1000100100 146 0100100100 147 1100100100 148 0010100100 149 1010100100 Compressor 1 opera tin time upper 4 digits Compressor 1 opera tin time lower 4 digits COMP 1 number of st...

Page 163: ...rror detail 0000 9999 Inverter error detail 0001 0120 Error history 8 0000 9999 SW1 LED No 1234567890 Item LD1 LD2 LD3 LD4 LD5 LD6 LD7 LD8 Remarks 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 167 1110010100 168 000101010...

Page 164: ... LD2 LD3 LD4 LD5 LD6 LD7 LD8 Remarks 194 0100001100 195 1100001100 196 0010001100 197 1010001 0110001100 1110001100 100 198 199 200 0001001100 201 1001001100 202 0101001100 203 1101001100 204 0011001100 205 1011001100 206 0111001100 207 1111001100 208 0000101100 209 1000101100 210 0100101100 211 1100101100 212 0010101100 213 1010101100 214 0110101100 215 1110101100 216 0001101100 217 1001101100 21...

Page 165: ... 1111111100 256 0000000010 257 1000000010 258 0100000010 259 1100000010 260 0010000010 261 1010000010 262 0110000010 263 1110000010 THHS1 THHS5 99 9 999 9 99 9 999 9 264 0001000010 265 1001000010 266 0101000010 267 1101000010 268 0011000010 269 1011000010 270 0111000010 0000 9999 Control data Hz Fan inverter output Control data Frequency that is output from inverter Hz The unit is C The unit is kg...

Page 166: ...0010 302 0111010010 303 1111010010 304 0000110010 305 1000110010 306 0100110010 307 1100110010 Peak value A Outdoor LEV opening pulses Fully open 480 99 9 999 9 99 9 999 9 0000 9999 0 480 LEV1 Number of fans being used COMP1 operation current DC 308 0010110010 The unit is V The unit is h Count up when starting up Time 0000 9999 0000 9999 COMP1 bus voltage Compressor 1 opera tin time upper 4 digits...

Page 167: ...0001010 326 0110001010 327 1110001010 328 0001001010 329 1001001010 330 0101001010 331 1101001010 332 0011001010 333 1011001010 334 0111001010 355 1111001010 336 0000101010 337 1000101010 338 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 351 1111101010 35...

Page 168: ...93 1001000110 394 01010001 395 1101000110 10 Displayed alternately every 5 seconds IC3 Address Capacity code IC4 Address Capacity code IC5 Address Capacity code IC6 Address Capacity code IC7 Address Capacity code IC8 Address Capacity code IC9 Address Capacity code IC10 Address Capacity code IC11 Address Capacity code IC12 Address Capacity code IC13 Address Capacity code IC14 Address Capacity code ...

Page 169: ...435 1100110110 436 0010110110 437 1010110110 438 0110110110 The unit is C IC1 Suction temperature IC2 Suction temperature 99 9 999 9 IC3 Suction temperature IC4 Suction temperature IC5 Suction temperature IC6 Suction temperature IC7 Suction temperature IC8 Suction temperature IC9 Suction temperature IC10 Suction temperature IC11 Suction temperature IC12 Suction temperature IC13 Suction temperature...

Page 170: ...d pipe temp IC21 Liquid pipe temp IC22 Liquid pipe temp IC23 Liquid pipe temp IC24 Liquid pipe temp 99 9 999 9 99 9 999 9 440 0001110110 441 1001110110 442 0101110110 443 1101110110 444 0011110110 445 1011110110 446 0111110110 447 1111110110 448 0000001110 449 1000001110 450 0100001110 451 1100001110 452 0010001110 453 1010001110 454 0110001110 455 1110001110 456 0001001110 457 1001001110 458 0101...

Page 171: ...Item LD1 LD2 LD3 LD4 LD5 LD6 LD7 LD8 Remarks The unit is C Refer to LED display at initial setting 99 9 999 9 IC1 Gas pipe temp IC2 Gas pipe temp The unit is C 99 9 999 9 482 0100011110 483 1100011110 484 0010011110 485 1010011110 486 0110011110 487 1110011110 488 0001011110 489 1001011110 490 0101011110 491 1101011110 492 0011011110 493 1011011110 494 0111011110 495 1111011110 496 0000111110 497 ...

Page 172: ...s pipe temp The unit is C 99 9 999 9 SW1 LED No 1234567890 Item LD1 LD2 LD3 LD4 LD5 LD6 LD7 LD8 Remarks 525 1011000001 526 0111000001 527 1111000001 528 0000100001 529 530 0100100001 531 1100100001 532 0010100001 533 1010100001 534 0110100001 535 1110100001 536 0001100001 537 1001100001 538 0101100001 539 1101100001 540 0011100001 541 1011100001 542 0111100001 543 1111100001 544 0000010001 545 100...

Page 173: ... 580 581 582 583 584 585 586 587 588 589 590 591 592 593 594 595 596 597 598 599 600 601 602 603 604 605 606 607 608 609 610 0101 1101110001 0011110001 1011110001 0111110001 1111110001 0000001001 1000001001 0100001001 1100001001 0010001001 1010001001 0110001001 1110001001 0001001001 1001001001 0101001001 1101001001 0011001001 1011001001 0111001001 1111001001 0000101001 1000101001 0100101001 110010...

Page 174: ...0011001 0001011001 1001011001 0101011001 1101011001 0011011001 1100011001 621 622 623 624 625 626 627 628 629 620 0111011001 1111011001 0000111001 1000111001 0100111001 1100111001 0010111001 1010111001 0110111001 1011011001 631 632 633 634 635 636 637 638 639 630 0001111001 1001111001 0101111001 1101111001 0011111001 1011111001 0111111001 1111111001 0000000101 1110111001 641 642 643 644 645 646 64...

Page 175: ...0 00 99 99 FAN board S W version 0 00 99 99 SW1 LED No 1234567890 Item LD1 LD2 LD3 LD4 LD5 LD6 LD7 LD8 Remarks 661 662 663 664 665 666 667 668 669 660 0110100101 1110100101 0001100101 1001100101 0101100101 1101100101 0011100101 1011100101 0111100101 1010100101 671 672 673 674 675 676 677 678 679 670 0000010101 1000010101 0100010101 1100010101 0010010101 1010010101 0110010101 1110010101 0001010101 ...

Page 176: ...s IC17 LEV opening pulses IC18 LEV opening pulses IC19 LEV opening pulses IC20 LEV opening pulses IC21 LEV opening pulses IC22 LEV opening pulses IC23 LEV opening pulses IC24 LEV opening pulses Fully open 2000 00 00 99 12 1 31 00 00 23 59 00 00 99 12 1 31 SW1 LED No 1234567890 Item LD1 LD2 LD3 LD4 LD5 LD6 LD7 LD8 Remarks 701 702 703 704 705 706 707 708 709 700 0111110101 1111110101 0000001101 1000...

Page 177: ...ses IC32 LEV opening pulses SW1 LED No 1234567890 Item LD1 LD2 LD3 LD4 LD5 LD6 LD7 LD8 Remarks 738 0100011101 1100011101 739 0010011101 741 742 743 744 745 746 747 748 749 740 0110011101 1110011101 0001011101 1001011101 0101011101 1101011101 0011011101 1011011101 0111011101 750 1111011101 751 0000111101 752 1000111101 753 0100111101 754 1100111101 755 0010111101 756 1010111101 757 0110111101 758 1...

Page 178: ...1 LED No 1234567890 Item LD1 LD2 LD3 LD4 LD5 LD6 LD7 LD8 Remarks 790 1110100011 791 0001100011 792 1001100011 793 0101100011 794 1101100011 795 0011100011 796 1011100011 797 0111100011 798 1111100011 799 0000010011 800 1000010011 801 0100010011 802 1100010011 803 0010010011 804 1010010011 805 0110010011 806 1110010011 807 0001010011 808 1001010011 809 0101010011 810 1101010011 811 0011010011 812 1...

Page 179: ...32 1000011011 833 0100011011 834 1100011011 835 0010011011 836 1010011011 837 0110011011 838 1110011011 839 0001011011 840 1001011011 841 0101011011 842 1101011011 843 0011011011 844 1011011011 845 0111001001 846 1111001011 847 0000101011 848 1000101011 849 0100101011 850 1100101011 851 0010101011 852 1010101011 853 0110101011 854 1110101011 855 0001101011 856 1001101011 857 0101101011 858 1101101...

Page 180: ...011011 873 0101011011 874 1101011011 875 0011011011 876 1011011011 877 0111011011 878 1111011011 879 0000111011 880 1000111011 881 0100111011 882 1100111011 883 0010111011 884 1010111011 885 0110111011 886 1110111011 887 0001111011 888 1001111011 889 0101111011 890 1101111011 891 0011111011 892 1011111011 893 0111111011 894 1111111011 895 0000000111 896 1000000111 897 0100000111 898 1100000111 899...

Page 181: ... 179 SW1 LED No 1234567890 Item LD1 LD2 LD3 LD4 LD5 LD6 LD7 LD8 Remarks 1101000111 907 0011111111 1020 1011111111 1021 1023 0111111111 1022 1111111111 ...

Page 182: ...TOKYO 100 8310 JAPAN Service Handbook PUHY P200 P250 P300 P350 P400YGM A PUHY P450 P500 P550 P600 P650YGM A PUY P200 P250 P300 P350YGM A Issued in Sep 2004 HWE04010 Printed in Japan New publication effective Sep 2004 Specifications subject to change without notice ...

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Mitsubishi Electric P250, Service Handbook

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