Mitsubishi Electric CITY MULTI CMB-P1010V-E Service Handbook Download

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AIR CONDITIONERS CITY MULTI

Models

PQRY-P200YMF-B, P250YMF-B
CMB-P104, P105, P106, P108, P1010, P1013, P1016V-E

Service Handbook

Summary of Contents for CITY MULTI CMB-P1010V-E

Page 1: ...AIR CONDITIONERS CITY MULTI Models PQRY P200YMF B P250YMF B CMB P104 P105 P106 P108 P1010 P1013 P1016V E Service Handbook ...

Page 2: ...jor Component Functions 62 6 Resistance of Temperature Sensor 65 6 REFRIGERANT AMOUNT ADJUSTMENT 66 1 Refrigerant Amount and Operating Characteristics 66 2 Adjustment and Judgement of Refrigerant Amount 66 7 TROUBLESHOOTING 75 1 Principal Parts 75 2 BC Controller Disassembly Procedure 103 3 Self diagnosis and Countermeasures Depending on the Check Code Displayed 109 4 LED Monitor Display 131 8 PRE...

Page 3: ...lt the dealer If the unit is repaired improperly water leakage electric shock or fire may result Do not touch the heat exchanger fins Improper handling may result in injury If refrigerant gas leaks during installation work ventilate the room If the refrigerant gas comes into contact with a flame poisonous gases will be released Install the air conditioner according to this Installation Manual If t...

Page 4: ...eal the system the com position of the refrigerant in the cylinder will 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 refrigerat...

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: ...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 CITY MULTI...

Page 11: ... 8 2 2 2 2 2 COMPONENT OF EQUIPMENT 1 Appearance of Components Heat source unit Heatexchanger Control Box CV Block Drier Accumulator Compressor SV Block 4 way Valve ...

Page 12: ...ralized Control Terminal block TB8 UNIT ON OFF Pump inter lock Terminal block TB1A Power Source Terminal block TB3 Transmission Cooling fan MF1 DC reactor DCL Choke coil L2 Fuse F3 Noise Filter Magnetic Contactor 52C Transistor Module TRM3 TRM2 TRM1 Diode stack DS Capacitor C2 C3 Front View Inner View ...

Page 13: ... 10 MAIN board CNTR CNVCC4 CNS1 CNS2 CN40 CN41 CNVCC3 CN51 CN3D LD1 Service LED SW1 SW2 SWU1 SWU2 SW3 SW4 CN20 Power source for control 5V Power source for control 1 2 30 V 1 3 30 V 4 6 12 V 5 6 5 V ...

Page 14: ...ard CN3 CN2 1 CN2 2 CN2 3 CNVDC CN52C CNFAN CNAC2 CNR CNRS2 SW1 CNCT CN30V CNTH CNL2 CNVCC1 CNVCC2 Power source 1 L2 3 N Power supply 5V Power supply 1 2 30 V 1 3 30 V 4 6 12 V 5 6 5 V Output to transistor module ...

Page 15: ... 12 RELAY board ...

Page 16: ... 13 BC controller CNTR CN02 M NET transmission CN03 CN12 Power supply 1 EARTH 3 N 5 L SW4 SW2 SW1 BC board ...

Page 17: ... 14 RELAY 10 board RELAY 4 board ...

Page 18: ...CV6 SV71 Orifice SV72 30 20 ST7d SV6 SV5 SV4 SV3 Solenoid Valves Block Check Valves Block Water heat exchanger Double coil type CV11 ST8 Distributor BV2 BV1 ST1 CV3 CV2 30 0 29 0 32 0 22 0 0 50 0 54 99 0 79 0 23 5 9 0 2 15 2 2 6 2 6 5 4 3 5 0 78 60 C H Operation Condition Cooling Indoor 27 19 5 Inlet water 30 C Water volume 4 93m 3 h Heating Indoor 21 Inlet water 20 C Pipe length 10m Indoor capaci...

Page 19: ...VC SVA SVB Indoor units BC controller CMB P104V E Gas liquid separator PS1 LEV1 SVM PS3 LEV3 TH12 TH11 TH15 TH16 Solenoid valve Orifice Capillary Check valve Thermal sensor Strainer SP Service port ACC Accumulator BC controller Indoor unit ...

Page 20: ...B P1016V E Joint pipe kit CMY R160 G for V E type Ceiling mounted built in 71 PMFY P 1 way flow 20VMB 25VBM 32VBM 40VBM 71VMH PDFY P 20VM 25VM 32VM 40VM 50VM 63VM 80VM 100VM 125VM 71VM PQRY P250YMF B PAR F25MA MJ 103MTRA PAC FL31MA PAC SC30GRA PAC SC32PTA PAC SE51CRA 6 GROUP SELECT MODE TEST RUN AIR DIRECTION FAN SPEED ON OFF 0 8 7 5 4 CLOCK PATTERN PROHIBITION TIMER MODE TEMP REMOTE MJ 103MTRA CE...

Page 21: ... R7 Black Yellow Orange L2 Power circuit board INV board BOX BODY Red Brown Black Purple Black Yellow White Red Brown Orange Red Blue 3 4 2 5 1 CN51 5P 12V 5 DIP SW3 3 OFF water freeze signal ON trouble signal 4 Compressor ON OFF Control circuit board MAIN board TH10 THINV CN12 2P CN09 2P CN06 2P CN05 4P CN03 3P CN02 8P CN01 2P CNOUT1 6P 1 2 TH9 CNRT1 5P 5 4 3 2 1 1 2 6 5 4 3 2 1 X08 X09 CN36 6P C...

Page 22: ...Thermistor THHS TH10 TH9 TH6 TH4 TH3 TH2 TH1 THINV Earth terminal 21S4 SV1 SV2 SV3 SV4 SV72 SV71 SV5 SV6 SV73 SSR Unit internal layout Upside Underside Controller box internal layout Operation of self diagnosis switch SW1 and LED display LED display SV3 SV4 SV5 SV6 TH6 THINV TH2 21S4 26W INVERTER SV72 SV71 OIL MC ACCUMULATOR TH9 LEV2 SLEV TH4 TH3 SV1 SV73 SV2 63H TH1 TH10 63HS 63LS CONTROLLER BOX ...

Page 23: ...sensor Transmission line Shield wire N 220V 240V 50Hz Power source BC Board 3 1 LEV1 TB01 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 SVM SV4B SV4A SV4C SV3B SV3A SV3C SV2B SV2A SV2C SV1C SV1A SV1B CN38 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 3 CNVCC1 1 2 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 ...

Page 24: ...mission line Shield wire N 220V 240V 50Hz Power source BC Board 3 1 LEV1 TB01 16 15 2 1 2 1 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 SV4B SV4A SV4C SV3B SV3A SV3C SV2B SV2A SV2C SV1C SV1A SV1B CN38 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 3 CNVCC1 1 2 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...

Page 25: ...3 1 7 5 3 1 7 5 3 1 7 5 3 1 7 5 3 1 TR 3 CNVCC1 1 2 X2 X1 X30 X4 X3 X31 X6 X5 X32 X8 X7 X33 X10 X9 X34 X12 X11 X35 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 22V TB02 M2 M1 CN26 CN27 CN28 CN29 CN30 CN31 TB01 220 240V CN36 Symbol explanation Terminal block for Transmission TB02 ...

Page 26: ... TH12 TH15 TH16 PS1 PS3 20 22V TB02 M2 M1 CN26 CN27 CN28 CN29 CN30 CN31 TB01 220 240V LEV1 7 6 5 4 3 2 1 TB01 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 ...

Page 27: ...20 22V TB02 M2 M1 CN26 CN27 CN28 CN29 CN30 CN31 TB01 220 240V LEV1 7 6 5 4 3 2 1 1 2 3 4 5 6 CN35 TB01 SV6B SV6A 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 1...

Page 28: ... 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 SV4B SV5B S...

Page 29: ...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 15 16 SV9C ...

Page 30: ... 7 7 10 10 12 12 4 9 4 3 30 30 23 5 23 5 70 78 26 30 15 15 0 23 0 23 380 415 380 415 270 77 270 77 340 98 340 98 14 0 12 8 18 8 17 2 Indoor unit fan notch Refrigerant volume Compressor volts Frequency Heat source unit Indoor unit BC controller 1 3 Oil return High pressure Low pressure BC controller liquid Intermediate Pressure V Hz DB WB C Q ty m kg V V Hz A Pulse kg cm2 G MPa C Condition Sectiona...

Page 31: ... 29 5 9 55 60 38 40 80 85 0 28 0 28 380 415 380 415 250 69 250 69 330 88 330 88 13 1 12 0 16 1 14 8 Indoor unit fan notch Refrigerant volume Compressor volts Frequency Heat source unit total current Indoor unit BC controller 1 3 Oil return High pressure Low pressure BC controller liquid Intermediate Pressure V Hz DB WB C Q ty m kg V V Hz A Pulse kg cm2 G MPa C Condition Sectional temperature LEV o...

Page 32: ...unction valid All indoor units test operation ON Heat source unit abnormal output Freeze prevention operation 5 C Valid 53 C Model P250 Valid 1 2 1 8 9 10 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10 1 2 3 6 Function of Dip SW and Rotary SW 1 Heat source unit Switch Function Function according to switch operation Switch set timing When off When on When off When on Note SWU1 2 00 when shipped from the...

Page 33: ...rn Power source start stop Model selection Louver Vane Vane swing function Vane horizontal angle Vane angle set for cooling Heating 4deg up 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 Ineffective At unit stopping at remote controller OFF Always ineff...

Page 34: ... PCFY P VGM PKFY P VGM PLFY P VLMD PDFY P VM Phase control Relay selection The ceiling height is changed by SWB setting Ceiling height 3 3 5m 2 2 8m 1 2 3m 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 5m 3 8m 3 8m 3 way 3 0m 3 3m 3 5m 4 way 2 7m 3 0m 3 5m Set to the option to install the high efficiency filter Always after powering Alway...

Page 35: ... XH A JST Output DC 12 V Operation DC 12 V is output during compressor operation 3 Water freeze trouble signal Connector No CN51 3 5 Connector B5B XH A JST Output DC 12 V Operation When DIP switch 3 3 is OFF If the water temperature TH 6 drops below 5 C while the unit is stopped DC 12 V is output When DIP switch 3 3 is ON DC 12 V is output when the heat source unit is stopped abnormally 2 Input 1 ...

Page 36: ...case 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 heat source 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 inverter...

Page 37: ...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 38: ... 35 ...

Page 39: ...lation work for drain piping properly done Specified switch capacity and wiring diameter of main power source used Proper grounding work done on heat source unit The phases of the L line L1 L2 L3 correct L line and N line connected correct Classification Installation and piping Power source wiring 5 Check points for system structure ex PQRY P200YMF B Check points from installation work to test run...

Page 40: ...ansmission line Address setting properly done Remote controller indoor unit and heat source unit Setting of address No done when shutting off power source Address numbers not duplicated Turned on SW3 8 on indoor unit circuit board when mounting room thermistor sensor Refrigerant piping ball valve Liquid pressure pipe gas pressure pipe opened Turn on power source 12 hours before starting opera tion...

Page 41: ...1 99 100 51 99 100 101 150 151 199 200 000 201 250 1 50 1 50 Example Note The smallest address of indoor unit in same refrigerant system 50 If the address is to be 100 use 50 The address of Heat source unit 1 If the address is to be 100 use 50 The smallest address of indoor unit in the group 100 The place of 100 is fixed to 1 The address of main remote controller 50 The address automatically becom...

Page 42: ... done with remote controller When the centralized remote controller is connected the setting should be done with the centralized remote controller Address setting can be done on each unit freely Regarding transmission wiring provide 2 wire jumper system Centralized system transmission line to outdoor units to be connected to indoor unit in the same group and mount short circuit connector on CN41 t...

Page 43: ...3 Indoor unit Indoor unit Indoor unit 153 Remote controller Sub Remote controller Main Remote controller Heat source unit BC controller 52 System diagram Description 1 Individual operation 2 Group operation Switch settings 1 Address switch Range 01 50 101 150 Note 1 51 100 Note 2 51 100 Note 2 Setting Indoor unit setting 100 Smallest address among indoor units 50 Heat source unit 1 Note 1 For remo...

Page 44: ...ter address within the 1 50 range to avoid duplication with other indoor units Indoor unit 01 02 03 Switch settings Same as 1 Individual operation Registering with a remote controller Registers operation of Fresh Master and indoor units using the remote controller Fresh Master 04 Remote controllers for groups using different refrigerants connect to transfer line of the latest indoor unit in the gr...

Page 45: ...naging electrical supply connector CN40 When a group remote controller GR is connected to a transfer line for indoor units this changes the single electrical supply connector in an outdoor unit group from CN41 to CN 40 When connected to a transfer line for central manag ers leave it as is on CN41 receiving electrical power from an electrical supply device Registration using a group remote controll...

Page 46: ...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 47: ...ed registration 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...

Page 48: ...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 heat source units remote controller or the like is retrieved identi fied 4 Deletion of group registration information of indoor units The registration of the indoor units under group...

Page 49: ...e controller under stopping HO under displaying Ordinary mode INDOOR UNIT ADDRESS NO ERROR CODE OAUNITADDRESSNO C INDOOR UNIT ADDRESS NO ERROR CODE OAUNITADDRESSNO C INDOOR UNIT ADDRESS NO ERROR CODE OAUNITADDRESSNO C 1 1 Group setting mode Confirm the indoor unit address No Confirm the connection of the transmission line ON OFF STAND BY DEFROST ERROR CODE OA UNIT ADDRESS NO CENTRALLY CONTROLLED C...

Page 50: ...play 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 SET switch H Then press the switch E to display it on the remote controller See figure below Each pressing of switch...

Page 51: ...ODE FILTER CHECK TEST RUN ON OFF CLOCK FILTER CHECK TEST RUN REMOTE CONTROLLER NETWORK PAR F25MA TEMP TIMER SET INDOOR UNIT ADDRESS NO ERROR CODE OAUNITADDRESSNO C ON OFF STAND BY DEFROST ERROR CODE OA UNIT ADDRESS NO CENTRALLY CONTROLLED CLOCK ON OFF C 1Hr NOT AVAILABLE C CHECK MODE FILTER CHECK TEST RUN ON OFF CLOCK FILTER CHECK TEST RUN REMOTE CONTROLLER NETWORK PAR F25MA TEMP TIMER SET INDOOR ...

Page 52: ...rror 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 return to the original ordinary mode with the remote controller under stopping INDOOR UNI...

Page 53: ...en high pressure rises Pd When high pressure Pd rises 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 turned on Turned on for 3 minutes Always turned on When Pd reaches 27 5kg cm2 G 2 70MPa When Pd is under 24kg cm2 G 2 35MPa and 30 seconds SV2 ON Open OFF Close Al...

Page 54: ...Amount of frequency change The amount of frequency change is controlled corresponding to evaporation temperature and high pressure saturation temperature 3 Back up of frequency control by bypass valve During 20Hz operations frequency is backed up by turning on opening bypass valve SV2 Cooling During 20Hz operations 3 minutes after starting compressor bypass valve is turned on when Ps is 1 5kg cm2 ...

Page 55: ...wing For 6 minutes after starting unit and during unit stopping b In case AL 2 and Td Tc 20 is detected for 3 consecutive minutes during liquid level detection control at excessive refrigerant replenishment and trouble mode Changed to intermittent fault check mode preceded by 3 minutes restart prevention Error stop is observed when trouble is detected again in the same intermittent fault check mod...

Page 56: ...when trouble is detected again in the same intermittent fault check mode for 30 minutes after unit stops for intermittent fault check When turning on liquid level trouble ignore switch SW2 6 error stop is not observed and 3 minutes restart prevention by intermittent fault check mode is repeated However LED displays overflow Turning SW2 6 on makes the error of TH6 outdoor air sensor ineffective 8 C...

Page 57: ...rature drops below 80 C During this operation turning on the inverter is prohibited b When the inverter is operating Always ON c Once the fan goes on it forcibly remains ON for 5 minutes Note By mounting the control box in the frame a structure is created where air passages are formed so when mount ing the control box be sure to push it in to the back Also at that time be careful of tearing of the...

Page 58: ... only Cooling main Heating main Stop Please confirm that the above parts of BC controllers are being color corded and shown with the name plate inside the BC controller unit 1 2 3 Superheat control Differential pressure control Control every minute so that superheat amount detected by bypass inlet and oulet temperatures TH12 TH15 stay in the specified range Control every minute so that detected di...

Page 59: ... operating normally heat source unit shows only LED display without undergoing stop Note 3 On PUHY system operation mode conforms to mode command by indoor unit However when heat source 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 ...

Page 60: ...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 heat source unit Receiving operation mode command from heat source unit Error mode Cooling only operations Heating only operations Cooling main operations Heating main operations Operation ...

Page 61: ...ations 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 Error command to heat source unit 3 Indoor unit Note 1 Indoor unit LEV fully closed Opening 60 Note 2 Two error modes include indoor unit trouble BC controller trouble and heat source unit side trouble In the case of indoo...

Page 62: ...id valve OFF 5 BC controller LEV fully closed 1 Inverter frequency control 2 Indoor unit LEV oil return LEV SLEV INV cooling LEV LEV2 control 3 Solenoid valve control 4 BC controller solenoid valve control 5 BC controller LEV control Cooling operation 4 way valve OFF Indoor unit fan operations Test run start Thermostat ON Normal operations Test run Stop 3 minute restart prevention ...

Page 63: ...losed 4 Solenoid valve OFF 5 BC controller solenoid valve OFF 6 BC controller LEV fully closed 1 Indoor and heat source unit fan control 2 Inverter frequency control 3 Indoor unit LEV oil return LEV SLEV INV cooling LEV LEV2 control 4 Solenoid valve control 5 BC controller solenoid valve control 6 BC controller LEV control Heating operation 4 way valve ON Test run start Thermostat ON 3 minute rest...

Page 64: ...zed 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 heat source unit compressor and indoor unit fan start intermittent operations synchronously Operations of heat source unit BC controller indoor unit LEV and solenoid valve accompanying compressor are the same a...

Page 65: ...essure protection 1 Discharge temperature detection 2 High pressure protection 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 tempera ture 2 Calculates the refrigerant circulation configuration 3 Controls the compressor frequency 4 Controls the valves for heat ex changer capacity control Detection of refri...

Page 66: ...vel detection circuit 1 Adjust superheat of heat source unit heat exchanger outlet at cooling 2 Adjust subcool of indoor unit heat exchanger 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 ...

Page 67: ...ture SVM SVA SVB SVC LEV1 LEV3 1 Liquid pressure high pressure detection 2 LEV control 1 Intermediate pressure detection 2 LEV control LEV control liquid refrigerant control LEV control superheat control LEV control superheat control LEV control subcool control Opens for cooling only defrosting Supplies refrigerant to cooling indoor unit Supplies refrigerant to heating indoor unit Supplies refrige...

Page 68: ...60 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 69: ...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 70: ...door units on cooling or on heating checking the discharge temperature sub cooling BC control ler low pressure saturation temperature inlet temperature shell bottom temperature liquid level liquid step etc and rendering an overall judgment Note Depending on the operating state AL 0 has the meaning does not mean that there is insufficient refrigerant 2 Cautions when judging the liquid level If you ...

Page 71: ...P250YMF B Refrigerant charge volume 7 5kg 8 5 kg 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 calculatio...

Page 72: ...s will possibly change to AL 0 In case subcool of BC controller is 5 degrees or less or SH of at least one indoor units 5 degrees or less 2 Refrigerant amount adjustment in cooling mode can not be performed when high pressure is 14kg cm2 G 1 37MPa or more In this case perform the adjustment in heating mode In the case of cooling only operations in refrigerant amount adjustment mode if the above 2 ...

Page 73: ...overing time as a standard Recover refrigerant little by little from low pressure service port Valid for only 2 hours in the test run mode All work must therefore be carried out within 2 hours Select the test run mode again if more than 2 hours is required The coolant volume adjustment mode extends for 2 hours after SW2 4 is set to ON All work must therefore be carried out within 2 hours Switch SW...

Page 74: ... Table 6 PQRY P200YMF B In case total capacity code is 40 or more and displayed compressor frequency is 75Hz or more Low pressure kg cm2 G MPa 3 8 4 5 4 5 5 0 5 0 5 5 5 5 6 0 6 0 or more 0 37 0 44 0 44 0 49 0 49 0 54 0 54 0 59 0 59 Adjustment W kg 7 5 3 2 1 Table 7 PQRY P200YMF B In case total capacity code is 40 or less and displayed compressor frequency is 74Hz or less Compressor frequency Hz 39...

Page 75: ... closing vacuum pump valve shutting off high pressure circuit of system analyzer and opening valve of refrigerant cylinder In case service port of ball valve and charge plug can not be jointed as shown in the figure use two vacuum pumps and evacuate high pressure side and low pressure side circuits separately Note 1 Though refrigerant gas itself is harmless airtight room should be opened before ga...

Page 76: ...mounts required for heating and cooling and replenish the calculated refrigerant amount Adjustment finished Re adjustment Turn off refrigerant amount adjustment switch SW2 4 Liquid level changed from AL 1 to AL 0 Adjustment not required Liquid level changed from AL 1 to AL 0 Recover refrigerant little by little from low pressure Ball valve BV1 service port Finish refrigerant Suspend refrigerant pu...

Page 77: ... amounts between cooling and heating operations 1 In case refrigerant piping length is roughly known Replenish refrigerant observing the table below The total length is that converted to ø19 05 liquid pipe size 15 or less 15 17 17 or more 1 47 1 47 1 67 1 67 60m or less 10kg 5kg 2kg 60 90m 11kg 6kg 3kg 90m or more 12kg 7kg 4kg Liquid pipe size ø12 7 Actual length 0 75 Liquid pipe size ø9 52 Actual...

Page 78: ...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 79: ...sound of the refrigerant 2 In the case of SV2 Bypass a SV2 goes ON in accordance with the rise in the high 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 Heat Source Unit b Changes in the operating condition by solenoid valve operation can be confirmed by the te...

Page 80: ...d 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 CV9 CV8 CV7 CV10 CV5 CV4 CV6 SV71 Orifice SV6 SV5 SV4 SV3 Solenoid Valves Block HEXA HEXB HEXC HEXD HEX...

Page 81: ...e 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 sou...

Page 82: ... of 4 3 2 1 4 2 All output phases are turned OFF when LEV opening does not change 3 In case output phase is lacking or kept ON motor can not rotate smoothly generating ticking sound and vibration Closing and opening operations of valve B E A C D Valve opening Flow rate V a l v e c l o s i n g V a l v e o p e n i n g Full opening 2000 pulses Number of pulse SJ Additional tightening zone 870 100 pul...

Page 83: ...or 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 the control bo...

Page 84: ... so 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 in...

Page 85: ...y 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 CV9 CV8 ST7b ST7c ST7a TH6 CV7 CV10 CV5 CV4 CV6 SV71 Orifice ST7d SV6 SV5 SV4 SV3 Check Valves Block Distributor BV2 BV1 ST1 CV3 CV2 HEXA HEXB HEXC HEXD HEXE ...

Page 86: ...e internal voltage is normally 1 5V the tester to be used for troubleshooting of transistor module 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 tes...

Page 87: ... 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 heat source units heat source unit model can not be recognized Checking method countermeasure a Check transmission terminal block of remote controller for voltage i In case...

Page 88: ...3 Slipping off of centralized control transmission line TB7 at heat source unit 14 At system connected with MELANS power supply connector CN40 is inserted to centralized control transmission line of heat source 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 i...

Page 89: ...t 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 heat source unit to be confirmed 6 Slipping off of centralized control transmissio...

Page 90: ...e 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 Except...

Page 91: ...ue 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 ...

Page 92: ...earthing should be made at heat source 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 heat source units in case of the group operation with different refrigerant systems and from the upper rank contr...

Page 93: ... a 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 compressor stops and ...

Page 94: ...ansistor Refer to Troubleshooting of power transistor 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 co...

Page 95: ...mages the normal transistor module Therefore replace the transistor module and INV board together at the same time However if the INV board is damaged judge that the transistor module is faulty then judge whether replacement is necessary or not 2 Fully check wiring for incorrect and loose connection The incorrect or loose connection of the power circuit part wiring like transistor module and diode...

Page 96: ... 93 ...

Page 97: ...res sure 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 t...

Page 98: ...ure value Pressure Sensor Replacement Precaution Symptom Cooling only Cooling principal Heating only Heating 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 Lo...

Page 99: ...k 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 100: ...ue within a range of 10 is normal 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 Liquid inlet temperature TH11 Bypass outlet temperature TH12 Bypass outlet temperature TH15 Bypass inlet temperature TH16 Touch the probes of the tester or other instrument to the shaded ar...

Page 101: ...LEV 1 is fully 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 is 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 ...

Page 102: ... 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 103: ... Controller board Remove connectors 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...

Page 104: ...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 105: ...sting 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 Approximately 90Ω Ope...

Page 106: ...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 107: ...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 108: ...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 109: ...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 110: ...r abnormality 2502 Drain pump abnormality 2503 Drain sensor abnormality 4103 Reverse phase abnormality 4115 Power supply sync signal abnormality 4116 Fan speed abnormality motor abnormality 4200 VDC IDC sensor circuit abnormality 4210 Breaking of overcurrent 4220 Bus voltage abnormality 4230 Radiator panel overheat protection 4240 Overcurrent protection 4260 Cooling fan abnormality Air inlet TH21 ...

Page 111: ...al sensor abnormality TH3 1214 Preliminary THHS sensor circuit abnormality 1215 Preliminary sub cool coil outlet thermal sensor abnormality THINV 1219 Preliminary sub cool coil bypass inlet thermal sensor abnormality TH9 1221 Preliminary inlet water temperature thermal sensor abnormality TH6 1243 Preliminary compressor shell thermal sensor abnormality TH10 1402 Preliminary high pressure abnormalit...

Page 112: ...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 113: ... noid valve Check address setting of indoor unit connection Confirm 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 LE...

Page 114: ...d sole noid valve Check address setting of indoor unit connector Confirm that ball valve is fully opened Check indoor unit and take measu res to troube Check heat source unit and take mea sures to trouble Check heat source unit fan See Trouble check of heat source unit fan See Trouble check of solenoid valve Check resistance of thermistor See Trouble check of pressure sen sor Check inlet temp and ...

Page 115: ...uit trouble Refer to the item on judging low pres sure pressure sensor failure Check operations status by actually performing cooling or heating opera tions Cooling Indoor LEV LEV1 3 BC SVM SVA BC SV3 6 SV71 72 Heating Indoor LEV LEV3 BC SVB BC See Trouble check of LEV and sole noid valve Check address setting of indoor unit connector Confirm that ball valve is fully open ed Check indoor unit and ...

Page 116: ...ecking code Meaning detecting method Cause Checking method Countermeasure High pressure abnoramlity 2 Heat source unit Overchanged refrigerant abnormality Lacked refrigerant abnormal ity When press sensor detects 1kg cm2 G 0 098MPa or less just be fore starting of operation erro stop is observed with code No 1302 displayed 1 When liquid level of accumula tor reachesAL 2 overflow level and Td Tc 20...

Page 117: ...low pressure side At cooling Gas side ball valve At heating Liquid side ball valve When plural systems are existing the 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 immedia...

Page 118: ...inside the control box is detected to be 70 C or more again during operation longer than 30minutesaftertheheatsourceunit stops according to 1 above it is treated as having been detected the first time and operation is the same as in 1 above 1 Failure of the heat source water cir culating pump to operate 2 Heating equipment out of order 3 Clogged or dirty water heat ex changer 4 Lead wire to the wa...

Page 119: ...ge between 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 TB1 NF TB1A CNTR1 F3 T01 CNTR Refer to the circuit number and the wir ing diagram plate If F3 or F1 on the MAIN board is melted Resistance between both ends of the fuse is replace the fuses To judge failure of the T01 go to Indi ...

Page 120: ...contactor 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 controll...

Page 121: ...Wiring TRM CNVDC Wiring TRM Compressor Wiring CN2 1 CN2 2 CN2 3 CN3 TRM Wiring Check if the wiring polarities are as shown on the wiring diagram plate Check the coil resistances and in sulation resistance of the compres sor Go to Treatment of Inverter Compres sor Related Trouble Check if an instantaneous stop or power failure etc has occurred Check if the voltage is the rated volt age value Check ...

Page 122: ...ual Parts Failure Judgment Meth ods To judge failure of the THHS go to error code 5110 If the air passage of the heat sink is clogged clear the air passage 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 INV board when replacing the circuit board be sure to connect all the connectors ground wires etc securely Is the u...

Page 123: ...eck the temperature picked up by the sensor using the LED monitor If the deviation from the actual tem perature is great replace the MAIN cir cuit board In the case of the THHS replace the INV board Check thermistor resistance Check lead wire biting Check broken cover Check coming off of pin at connector Check broken wire Check sensor sensing temperature If it deviates from the actual temerature s...

Page 124: ...or circuit abnormality Different indoor model connected abnormality 1 When pressue sensor detects 1kg cm2 G 0 098MPa or less during operation heat source unit once stops with 3 minutes restarting mode and restarts if the detected pressure of pressure sensor ex ceeds 1kg cm2 G 0 098MPa imediately before restarting 2 If the detected pressure of sen sor is less than 1kg cm2 G 0 098MPa immediately bef...

Page 125: ...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 heat source unit indoor unit remote con troller 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 col...

Page 126: ...ng 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 heat source indoor 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 conta...

Page 127: ...rror 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 heat source unit When power sources are turned off sepa rately microcomputer is not reset and nor mal operations can not be restored Controller trouble is th...

Page 128: ...fied 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 ...

Page 129: ...an 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 sup...

Page 130: ...nsertion 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 detect...

Page 131: ...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 132: ...mission 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 Heat source unit Capacit...

Page 133: ...nt 241 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 capa...

Page 134: ...enoid valve THHS Inverter radiator panel IC Indoor unit LEV Electronic expansion valve COMP Compressor SW1 Heat source 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...

Page 135: ...THINV Error SV4 SSR Unit No 7 Unit No 15 Unit No 7 Unit No 15 Unit No 7 Unit No 15 Fan Heating main Heating only Oil Recov ery INV Error Pump interlock Error HPS Error Lights for Normal Operation Unit No 8 Unit No 16 Unit No 8 Unit No 16 Unit No 8 Unit No 16 OFF De mand Heating main Oil Recov ery Over charged Refrigerant THHS Error LD8isarelayoutputindicatorwhich lights u at all times when the mic...

Page 136: ...ata TH6 Data High Pressure Error 1 2 Suction pressure Error TH1 Error Low Pressure Error 1 Configuration Detection Error TH2 Error Discharge Tempera ture Error Comp tempera ture Error TH3 Error TH9 Error Overcur rent Protection Water heat exchanger frost Error TH4 Error TH10 Error Heat Sink Thermostat Operation Water tempera ture Error Overcur rent Break TH6 Error THINV Error Pump interlock Error ...

Page 137: ... Frequency INV Output Frequency AK SLEV LEV2 DC Trunk Line Current 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 l...

Page 138: ...2 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 Heat Source Unit Operation Mode Heat Source Unit Control Mode Relay Output Display 1 Lighting Display TH1 Data TH2 Data TH3 Data TH4 Data LEV2 Data TH6 Data HPS Data THHS Data THINV Data TH9 Data TH10 Data...

Page 139: ...lay2 lighting Display DC Trunk Line Current Heat Source 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 15 Data BC TH 16 Data BC P1 Data BC P3 Data BC SC 11 Data BC SH 12 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 Cooling only OFF Compres sor...

Page 140: ...0100 BC LEV 1 Data BC LEV 3 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 Temperature...

Page 141: ...0100 1001110100 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...

Page 142: ... 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 pulse IC14 LEV Opening pulse IC15 LEV Opening pulse IC16 LEV Opening pulse IC1 Operation...

Page 143: ... Number IC7 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 ...

Page 144: ...ion of leaks Heat Source Unit Cooling mode 1 Test run all indoor units in cooling mode 1 With SW3 1 on the MAIN board of the heat source unit set to ON and SW3 2 OFF ON to test run all indoor units 2 Change the remote controller settings so that all indoor units run in cooling mode 3 Check that all indoor units are running in cooling mode 2 Check the Tc and SC16 data The LED monitor switch SW1 on ...

Page 145: ...tension piping or the indoor units Reclaim the refrigerant do not discharge it into the air 5 Repair the leaks 6 After the leaks are repaired extract all air from the extension piping and the indoor units to create a vacuum Then open both ball valves BV1 and BV2 then adjust the refrigerant amount and verify that the refrigerant is circulating properly 4 Location of Leaks Heat Source Unit when Heat...

Page 146: ...cking the composition Check TH2 TH9 LPS and the CS circuit 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 ...

Page 147: ...ue 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 check that the refrigerant composition of αOC is ...

Page 148: ...s will leak out so there will be more R134a remaining in the machine and there is a possibility that breakdown of the machine due to insufficient capacity condensation on the heat exchanger etc could result Also if the equipment is charged with refrigerant directly from a bombe if it is charged in the gas phase the composition will change greatly so be sure to charge the equipment from the bombe s...

Page 149: ...407C is a refrigerant which is a mixture of HFC32 HFC125 and HFC134a R407C has different characteris tics from R22 so absolutely do not mix them Also absolutely do not add R410a to this refrigerant 2 Moisture control If a lot of moisture is mixed into the refrigeration system it will cause hydrolysis of the organic materials used in the refrigerator oil or compressor motor etc and this could cause...

Page 150: ...encies Overheating of the compressor Cooling deficiencies Overheating of the compressor Mixing of foreign matter Dirt contami nants Mineral oil etc A A A A A REFRIGERATOR OIL 1 Refrigerator Oil with HFC Based Refrigerants A different refrigerator oil is used with the new refrigerant than with R22 Note Since the type of refrigerator oil used with R22 is different from that used with R407C the diffe...

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Page 154: ...105 P106 P108 P1010 P1013 P1016V E HEAD OFFICE MITSUBISHI DENKI BLDG MARUNOUCHI TOKYO 100 0005 TELEX J24532 CABLE MELCO TOKYO Issued in Nov 1999 MEE99K029 Printed in Japan New publication effective Nov 1999 Specifications subject to change without notice ...

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Mitsubishi Electric CITY MULTI CMB-P1010V-E, Service Handbook

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