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Mitsubishi Electronics specifications Service Handbook PURY-P400, P500YMF-C

Models: PURY-P400 P500YMF-C

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Service Handbook PURY-P400, P500YMF-C

HEAD OFFICE MITSUBISHI DENKI BLDG. MARUNOUCHI TOKYO 100-0005 TELEX J24532 CABLE MELCO TOKYO

Issued in Aug 2002 F1105-214(MDOC)	New publication effective Aug 2002
Printed in Japan	Specifications subject to change without notice.

Page 148

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Mitsubishi Electronics specifications Service Handbook PURY-P400, P500YMF-C

Contents

Service Handbook Page Contents Safety precautions Carefully read the labels affixed to the main unitBe especially careful when managing the tools Do not use the existing refrigerant pipingUse liquid refrigerant to seal the system Use a vacuum pump with a reverse flow check valveStorage of Piping Material Piping Machining ReasonWhen non-oxide brazing was used BrazingItems to be strictly observed ReasonsVacuuming Airtightness TestR22 leakage detector Charging of Refrigerant DryerCylinder color identification R407C-Gray R410A-PinkOutdoor unit PURY-P400·500YMF-C Appearance of ComponentsP400 Type P500 Type 51C2 Module IPM Board Controller BoxNoise filter Magnetic contactor 52C1 Capacitor C2, C3 52F Main board Puhy / PuryINV board Fancon board BoardCnpow Cnfan CNFC2 CNE CNDC1SNB board Board BC controller CntrSW4 SW5 SW2 SW1 EarthRelay 10 board Relay 4 board ACC SV8 SV7CMB-P108, 1010, 1013, 1016V-FA LEV3 SVM2PS3 LEV1 SVM1TH25 LEV3aTH22 Electrical Wiring Diagram PURY-P400·500YMF-CCMB-P108·1010V-FA SV7B SV7A SV7C SV8B SV8A SV8CSymbol CMB-P1013·1016V-FACMB-P108V-FB LEV3Standard Operation Data Cooling operationPURY-P400YMF-C PURY-P500YMF-C DB/WBHeating operation Ture Power is on Defrosting end tempera Function of Dip SW and Rotary SWSWU SW3SW2 setting Indoor unit DIP SW1P40 P50 P63 Model P71 P80 P100 P125 P140SW4 220V 240VFunction Check points before test run Before Test RunConnected indoor units Can be connected without a RP Check points for test run when mounting options Local remote controller displays code NoBuilt-in optional parts Insulation pipePortion Check points for system structureNot heat at heating Error stop, compressor trouble CN40 on the Main board when the system is centralizedTurn on power source 12 hours before starting operations? Example, 200m or less total length 500m at the farthestTest Run Method Warm or cold air is blowing outSwitch function Filter +Controlled Test RUNAttribute display of unit Description of registration/deletion/retrievalRegistration procedure Group registration of indoor unitOperation procedure Press the switch for confirmation ESwitch G for the interlocked setting mode. See figure below No registrationPress the switch for confirmation F twice continuously Deletion completed Case of group reDeletion of address not existing Control of Outdoor Unit 1- 1 PURY-P400·500 YMF-C Initial processingControl at staring Compressor capacity controlBypass capacity control SV6aStop OFFSV1 Oil return control Electronic expansion valve Slev Defrosting controlControl of liquid level detecting heater Judgement and control of refrigerant amountFour-way valve Heat exchanger TH9Accumulator CS circuit Outdoor unit heat exchanger capacity controlStart of initial operation mode Step Control at initial startingEnd of initial operation mode 5 minutes Example Initial start control timing chartExample Minutes Emergency response operating mode 400 500 No Compressor Failure 48 % 65 %Control of BC Controller Control of SVA, SVB and SVCControl of SVM1 only FA type Control of LEVOutdoor unit Operation Flow ChartNormal operations Trouble observed Stop Operation No command BC controllerStart Normal operationsIndoor unit Cooling operation Normal operations Test run StopCooling operation Way valve OFF Indoor unit fan Operations Test run start Thermostat onHeating operation Normal operations Defrosting operations Stop Test runDry operation Thermostat onThermostat on Inlet temp ˚C Same as those in cooling operationsMC1 List of Major Component FunctionsMC2 TH3 TH4TH5 TH6CH2 CH3Resistance of Temperature Sensor Operating Characteristics and Refrigerant Amount Adjustment and Judgement of Refrigerant AmountLow temperature than overload Control system Temperature SymptomAdditional Refrigerant Charge Volume Refrigerant VolumePURY-P400YMF-C PURY-P500YMF-C Refrigerant Volume Adjustment Mode Operation ProcedureTH1 SC11 SC16Adjustment starts YES Turn all of switches ReadjustSW1 OFF Pipe Length Or less 60 ~ 90 m 18 kg 27 kg 31 kgConnector GND Black Vout White Vcc DC5V Red Principal PartsPressure Sensor Judging FailureSolenoid Valve SV1~8 SW1LED SV3 SV4 SV5 SV6Solenoid Valves Block1 Solenoid Valves Block SV8 CV7bCV5b CV4bCheck Valves Block1 CV5b CV4b CV2b CV3b Check Valves Block2Check Valves Block2 CV6bOutdoor LEV LEV Valve Closing and Valve Opening OperationsTemperature sensed by Thermistor liquid pipe temperature Temperature is considerably lowCompared to the remote control’s Intake temperature display, it canPart a Intelligent Power Module IPM Diode stackTester ⊕ 10~50 Ω TesterCheck method and handling After checking , if these are factorsCheck voltage between a and B NET transmission line break on the side of the room unitPower terminal block Voltage Verify the power Phenomena Unit is removedMain board ----CNS1, CNVCC3 INV board----CNAC2, CNVCC1, CNL2Case of M-NET remote controller 30V Check ProcedureNo powering signal INV board CNS1, CNVCC3Transmission line Wiring miss Door unit M-NET 17 ~ 30V? Checking method & countermeasure Case Melans is not usedMelans Normal in case of 10V ~CNR, CNAC2 Investigation of transmission wave shape/noise Forwiring MethodChecking EarthingDisconnected wires should Insulation resistance 2MΩ or more If the problem is solved and you connectAgain, replace the compressor Vidual Parts Failure Judgment MethodsTB1A~NF~TB1B~CNTR1~T01~CNTR TB1B~CNPOW, CNFAN~CN04~CNMFCNFAN~52F~CN05~CNMF CNFC1~CNFC2IPM A1-A2 20~60Ω AC Current sensor AcctMotor Compressor Red White Black Black Capacitor C2,C3 Board RedTroubleshooting the major components of the BC controller Pressure sensor Pressure sensor troubleshooting flowStart OK?HPS Temperature Sensor Thermistor troubleshooting flow Problem No abnormalityTemperature ˚C Temperature sensor resistance graphResistance value Thermistor R o=15 k Ω Rt=15exp 273+t LEV, Solenoid Valve Troubleshooting Flow LEV Output superheat BC controller Subcool Solenoid Valve Troubleshooting FlowIntermediate subcool BC controller liquid Solenoid Valve SVM is turned on and off in accordance with operation mode Disconnect the connector before measurementSVM1 Normal MalfunctionService panel BC Controller Disassembly ProcedureControl Box Thermistor Liquid and gas piping temperature detection Be careful when removing heavy parts Procedure100 Ler panel TH11 TH12 CN10 TH15, TH16 CN11101 LEVSolenoid Valve Coil LEV3 LEV1102 103 CNRS2 CNRS3 MechanicalCNAC2 TB1B 105 LEV3 SVM BC 106SVM1 LEV3 107 LEV3 SVM SVA BCLEV3 SVM 108SVA SV3~8 109 Slev110 Once vacuum operation protection isIndoor and outdoor units by oper 2502 Drain pumpTB1A~NF~TB1B~CNTR1~F3~ 111T01~CNTR VDC 112TB1A~NF~TB1B, TB1B~DS~52C 113 MF1~CNFAN114 115 TH HSThhs TH5 TH8CNDR2-CNDR1 116IPM-MC1 117 Error On, the wave shape is changed and the error is detected118 Communication/systemChecking method and processing Error 119Transmission circuit bus-busy er → Noise if existed, check the noiseCommunication trouble between Faulty generating controller 120Shut down OC unit power source, Remote No reply Faulty transmission wiring at IC unit sideGenerating Display Detecting More, and make them again122 123 124 System error 125126 How to read LED for service monitor LED Monitor Display127 Comp128 LD1 LD2 LD3 LD4 LD5 LD6 LD7 LD8Comp COMP1 TH2 TH3 TH4 TH5 TH6 TH7129 130 131 LD1 LD2 LD3 LD4 LD5 LD6 LD7 LD8132 133 IC16SC134 135 136 137 138 IC24SH139 IC24SC140 141 Location of leaks Outdoor unit Cooling mode SC16 LED monitor switchStop all indoor units and the compressor Check that all indoor units have been stoppedLocation of leaks Outdoor unit when heating 144 145 LPSService Handbook PURY-P400, P500YMF-C