Mitsubishi PEFY-P12NMSU-E Service Manual

Air-ConditionersTECHNICAL & SERVICE MANUALModelsPEFY-P06NMSU-E, PEFY-P08NMSU-EPEFY-P12NMSU-E, PEFY-P15NMSU-EPEFY-P18NMSU-E, PEFY-P24NMSU-EFor use

[ II Components and Functions ] - 3 -HWE08010 GB(2) Remote Controller DisplayA Current time/Timer time I Louver swingB Centralized control indicator

[ III Specfications ] - 4 -HWE08010 GBIII Specfications[1] Specifications1. SpecficationsModel PEFY-P06NMSU-E PEFY-P08NMSU-E PEFY-P12NMSU-E PEFY-P15N

[ III Specfications ]- 5 -HWE08010 GBModel PEFY-P18NMSU-E PEFY-P24NMSU-EPower source 1-phase 208/230V 60HzCooling capacity *1 BTU / h 18,000 24,0

[ III Specfications ] - 6 -HWE08010 GB2. Electrical component specificationsComponent Sym-bolPEFY-P06NMSU-E PEFY-P08NMSU-E PEFY-P12NMSU-ERoom tempera

[ IV Outlines and Dimensions ] - 7 -HWE08010 GBIV Outlines and Dimensions[1] Outlines and Dimensions1. PEFY-P06,08,12,15,18,24NMSU-Emm(in.)(35-7/16)(

[ V Wiring Diagram ]- 8 -HWE08010 GBV Wiring Diagram[1] Wiring Diagram1. PEFY-P06,08,12,15,18,24NMSU-E8765432143211~MM4231M1324 12 145676531432113512

[ VI Refrigerant System Diagram ] - 9 -HWE08010 GBVI Refrigerant System Diagram[1] Refrigerant system diagram(A) Gas pipe thermistor TH23(B) Gas pipe

[ VII Microprocessor Control ]- 10 -HWE08010 GBVII Microprocessor Control[1] Microprocessor Control1. Cool operation1. Termoregulating function(1) Th

[ VII Microprocessor Control ] - 11 -HWE08010 GBIn the air : Detected that the float switch is OFF for 15 seconds.2. Dry operation1. Termoregulating

[ VII Microprocessor Control ]- 12 -HWE08010 GBRemote controller setting is not acceptable.3. Drain pump(1) Same control as COOL operation3. Fan ope

iiHWE08010 GBSafety PrecautionsRead before installation and performing electrical workSymbol explanationsThoroughly read the following safety precaut

[ VII Microprocessor Control ] - 13 -HWE08010 GB4. Heat operation1. Termoregulating function(1) Thermoregulating function (Function to prevent restar

[ VII Microprocessor Control ]- 14 -HWE08010 GBThis control is same for the model without auxiliary heater.(4) Thermo OFF modeWhen the thermoregulat

[ VII Microprocessor Control ] - 15 -HWE08010 GB4. HEAT mode(1) Same control as heat operationThe value "3°F" is modifiable from 1.8°F to 9

[ VII Microprocessor Control ]- 16 -HWE08010 GB(1) On the ducted model units (except the Fresh air intake type), turning on the heater with the fan s

[ VII Microprocessor Control ] - 17 -HWE08010 GBReference (not applicable to the ducted models)This is applicable only to the R410A series. Make the

[ VII Microprocessor Control ]- 18 -HWE08010 GB2) PEFY-P-NMHU-E, PDFY-P-NMU-E and other modelsFor relay X use the specifications given below Opera

[ VIII Troubleshooting ] - 19 -HWE08010 GBVIII Troubleshooting[1] Troubleshooting1. Check methods1. Component and check points(1) ThermistorRoom te

[ VIII Troubleshooting ]- 20 -HWE08010 GB1) Summary of linear expansion valve (LEV) operationThe LEV is operated by a stepping motor, which operat

[ VIII Troubleshooting ] - 21 -HWE08010 GB2) LEV operationWhen the power is turned on, a pulse signal of 2200 pulses is output (valve closure sign

[ VIII Troubleshooting ]- 22 -HWE08010 GB(4) Drain-up mechanismMeasure the resistance between the terminals with a tester. (coil temperature 20°C[68°

iiHWE08010 GBPrecautions for handling units for use with R410AWARNINGKeep electrical parts away from water.Wet electrical parts pose a risk of electri

[ VIII Troubleshooting ] - 23 -HWE08010 GB2. DC fan motor (fan motor/indoor control board)1. CAUTION A high voltage is applied to the connector for

[ VIII Troubleshooting ]- 24 -HWE08010 GB3. Address switch settingMake sure that power to the unit is turned off.1. When using an ME remote controll

[ VIII Troubleshooting ] - 25 -HWE08010 GB4. Voltage test points on the control board1. PEFY-P06,08,12,15,18,24NMSU-EFuse Fuse(AC 250V 6.3A)CND Power

[ VIII Troubleshooting ]- 26 -HWE08010 GB5. Dipswitch setting (Factory setting)1. Function setting(1) SW11) Adress board(2) SW3*1 Please don't

[ VIII Troubleshooting ] - 27 -HWE08010 GB2. Capacity code setting(1) SW21) Indoor control boardDipswitch settings must be made while the unit is s

[ VIII Troubleshooting ]- 28 -HWE08010 GB6. Connection No. setting(1) SW14 (Rotary switch) This switch is used when the unit connected to an R2 seri

[ IX Disassembly Procedure ] - 29 -HWE08010 GBIX Disassembly Procedure[1] Disassembly Procedure1. Control boxExercise caution when removing heavy par

[ IX Disassembly Procedure ]- 30 -HWE08010 GB2. Thermistor (Intake air)Exercise caution when removing heavy parts.1. Remove the control box cover ac

[ IX Disassembly Procedure ] - 31 -HWE08010 GB3. DrainpanExercise caution when removing heavy parts.1. Removing the filter and the bottom plate(1) P

[ IX Disassembly Procedure ]- 32 -HWE08010 GB4. Thermistor (Gas pipe) (Liquid pipe)Exercise caution when removing heavy parts.1. Remove the drain pa

iiiiiiHWE08010 GBPrecautions for PAC-YU25HT (Optional parts)WARNINGStop the operation if any malfunction occurs.If malfunction occurs (burning smell,

[ IX Disassembly Procedure ] - 33 -HWE08010 GB5. Fan and fan motorExercise caution when removing heavy parts.1. Removing the filter and the bottom p

[ IX Disassembly Procedure ]- 34 -HWE08010 GB6. BearingP15, P18, P24 models only.Exercise caution when removing heavy parts.1. Removeing the bearing

[ IX Disassembly Procedure ] - 35 -HWE08010 GB7. Heat exchangerExercise caution when removing heavy parts.1. Remove the drain pan according to the p

Jul. 2008 HWE08010Printed in JapanNew publication, effective Jul. 2008Specifications subject to change without notice

ivHWE08010 GB

CONTENTSHWE08010 GBIFeatures[1] Features...

HWE08010 GB

[ I Features ] - 1 -HWE08010 GBI Features[1] FeaturesModel Cooling capacity/Heating capacityBTU/h kWPEFY-P06NMSU-E 6000/6700 1.8/2.0PEFY-P08NMSU-E 80

[ II Components and Functions ]- 2 -HWE08010 GBII Components an d Functi ons[1] Components and Functions1. Indoor (Main) Unit2. Remote Controller[PA