Mitsubishi Electric PLFY-P-VLMD-E Service Manual Page 1

TECHNICAL & SERVICE MANUALAir-Conditioners For Building Application<Indoor unit>2004ModelsCeiling CassettesSeries PLFYFor use with the R410A

PLFY-P125VLMD-EUnit :mmA3312Water filling port213Air filter20 338~3534-ø2.8Mounting holeStandard center panel(CMP-125VLW-B)Branch duct ø200 knock out

10PLFY-P20·25·32·40·50·63·80·100VLMD-E with OA duct flangeUnit : mm5234110159E20221Control BoxG-ø 2.9 Mounting holeboth side206241138243103D(Lifting B

5WIRING DIAGRAMPLFY-P20·25·32·40·50·63·80·100VLMD-E11DECORATION PANELT2T1T7T6T5T4T3BREAKER (16A)FUSE (16A)TO NEXT INDOOR UNITPULL BOX( TRANSMISSION TE

PLFY-P125VLMD-E12✻ Capacitor5.0µF ✕ 2 POWER SUPPLY~ 220-240V 50HzTO NEXT INDOOR UNITPULL BOXFUSE(16A)BREAKER(16A)TO OUTDOOR UNIT BC CONTROLLER M

REFRIGERANT SYSTEM DIAGRAM6Strainer (#100mesh)Strainer (#100mesh)Heat exchangerRoom temparature thermistor TH21Gas pipe thermistor TH23Liquid pipe the

7TROUBLE SHOOTING7-1. Simple check of main componentsMotor terminalorRelay connectorRed-Black40.5ΩWhite-Black48.8Ω112233RedWhiteBlackRelay connectorPr

01020304050-20 -10 0 10 20 30 40 50< Thermistor for lower temperature >Temperature (˚C)Resistance (KΩ )4ø4365ø32ø21ø1ø4ø3ø2ø1Controller boardDri

Output(Phase)Outputø11ONø2 ONø3 OFFø4 OFF2OFFONONOFF3OFFOFFONON4ONOFFOFFON<Output pulse signal and the valve operation>➁Linear expansion valve o

177-2. FUNCTION OF DIP-SWITCH123456789101~6123123412345678910Thermistor<Intake temperaturedetection>positionON OFFFilter crogging detection Prov

180594837261SW12100594837261SW11108F7E6D5C4B3A291SW140594837261SW120594837261SW1108F7E6D5C4B3A291SW14Operation by switchSwitch Pole Remarks<At deli

SAFETY PRECAUTIONSand install the unit at the specified place.- Improper installation may cause the unit to topple and result ininjury.• Always use an

321(Option)(Standard)SWC123(SWA)0594837261SW12100594837261SW11108F7E6D5C4B3A291SW14321(Option)(Standard)0594837261SW120594837261SW1108F7E6D5C4B3A291SW

208DISASSEMBLY PROCEDURE8-1.SERVICE PANEL and FILTEROPERATING PROCEDURE1. Removing the service panel (A) (Fig.1-1)(1) Slide the service panel (A) in t

218-2.CONTROL BOXOPERATING PROCEDURE<Model 20~100>1. Remove the service panel and filter with the pro-cedure explained in section 8-1.2. Removin

22OPERATING PROCEDURE<Model 125>1. Remove the service panel and filter with the pro-cedure explained in section 8-1.2. Removing the connector co

23OPERATING PROCEDURE3. Removing the control box (C)(3) If the control box (C) fixing screws (two) areremoved, the control box (C) is left hanging fro

8-3.Fan and fan motor24OPERATING PROCEDURE<Model 20~100>1. Remove the service panel and filter with the pro-cedure explained in section 8-1.2. R

25OPERATING PROCEDURE<Model 125>1. Remove the service panel and filter with the pro-cedure explained in section 8-1.2. Removing the filter fixed

268-4.Thermistor <fluid piping temperature detection, gas piping temperature detection>OPERATING PROCEDURE<Model 20~100>1. Remove the serv

27OPERATING PROCEDURE<Model 125>1. Remove the service panel and filter with the pro-cedure explained in section 8-1.2. Remove the control box wi

28OPERATING PROCEDURE6. Removing the thermistorsRemove the thermistors (K and L) from the thermistor holders (I and J) which are installed on the stee

2. Precautions for devices that useCaution:• Do not use the existing refrigerant piping.- The old refrigerant and refrigerator oil in the existing pip

298-5.THERMISTOR (Intake air temperature detection)OPERATING PROCEDURE<Model 125>1. Remove the service panel and filter with the pro-cedure expl

308-6.DRAIN PUMP and DRAIN SENSOROPERATING PROCEDURE<Model 20~100>1. Remove the service panel and filter with the pro-cedure explained in sectio

318-7.LEV and HEAT EXCHANGEROPERATING PROCEDURE<Model 20~100>1. Remove the service panel and filter with the pro-cedure explained in section 8-1

32OPERATING PROCEDURE<Model 125>1. Remove the service panel and filter with the pro-cedure explained in section 8-1.2. Remove the control box wi

338-8.Vane motorOPERATING PROCEDURE1. Remove the metal cover. (Three screws)(Photograph 8-1)2. Remove the vane motor cover.The vane motor cover can be

HEAD OFFICE: MITSUBISHI DENKI BLDG., 2-2-3, MARUNOUCHI, CHIYODA-KU, TOKYO 100-8310, JAPANIssued in June 2004 MEE04K240Printed in JapanNew publication,

PLFY-P20VLMD-EPLFY-P25VLMD-EPLFY-P32VLMD-EPLFY-P40VLMD-EPLFY-P50VLMD-EPLFY-P63VLMD-E2.2 / 2.52.8 / 3.23.6 / 4.04.5 / 5.05.6 / 6.3PLFY-P80VLMD-E9.0 / 1

PART NAMES AND FUNCTIONS2● Indoor (Main) UnitAir inletSucks the ambient air in.Long-life filterRemoves the sucked-in dust and dirt.Since the long-life

[Display]ON/OFF CENTRALLY CONTROLLEDERROR CODECLOCKON OFF˚CCHECKCHECK MODEFILTERTEST RUNFUNCTION˚C1Hr.NOT AVAILABLESTAND BY DEFROSTTEMP.ABCDEFHIKLJMPN

3SPECIFICATION3-1. Specification6Note: ❇3 The figure in < > indicates panel's❇1 Cooling/Heating capacity indicates the maximum value at ope

1.7µFx 440V1.5µFx 440V2.2µFx 440V1.5µFx 440V2.0µFx 440V5.0µFx 440VLEVC11.3µF x 440V MF1-PLFY-P20VLMD-EPLFY-P25VLMD-EPLFY-P32VLMD-EPLFY-P40VLMD-EPLFY-

4OUTLINES AND DIMENSIONSPLFY-P20·25·32·40·50·63·80·100VLMD-EUnit :mm8170mm ± 5mm(Actual Length)300mm or less583mmMAX73 2022221904-ø2.9 Mounting holeFr