Mitsubishi Electric MCF-18TN Manual de servicio

SERVICE MANUALCONTENTS1. PART NAMES AND FUNCTIONS······················22. SPECIFICATION·················································43. OUTLINES

10REFRIGERANT SYSTEM DIAGRAM5DefrostthermistorRT61IndoorheatexchangerOutdoorheatexchangerDistributorFlared connectionRoom temperaturethermistorRT11Ind

11A: Refrigerant piping Max.length 15m(49ft)Max. Height difference *5m(16ft)MAX. REFRIGERANT PIPING LENGTH & MAX. HEIGHT DIFFERENCEModelMCFH

12How to measure the indoor air wet-bulb/dry-bulb temperature difference1. Attach at least 2 sets of wet and-dry-bulb thermometers to the indoor air i

13Dry Bulb temperature (˚C)202530Relative humidity (%)506070OUTDOOR LOW PRESSURE AND OUTDOOR UNIT CURRENTCOOL operation1 Both indoor and outdoor units

14MICROPROCESSOR CONTROL7MCFH-18TN - MUCFH-18TN -MCFH-24TN - MUCFH-24TN -S1S1S1S1Once the operation mode are set, the same operation mode canbe re

15❈1 When the system is restarted with the remote controller, the system operates with the previous set temperature regard-less of room temperature at

163. Outdoor fan control <MUCFH-24TN - only>Outdoor fan speed is controlled according to the temperature of ambient temperature thermistor RT63

17(3) New warm air control.When compressor starts in heating operation or after defrosting, the fan changes the speed due to the indoor coil ther-mist

18NOTE15 seconds30 seconds30 seconds15 secondsMax. 10 minutes3.1: or more-3: or lessDefrost thermistor RT61ONOFFONOFFONOFFONOFFONOFFPosition 1Set posi

197-2. COOL OPERATION(1) Press OPERATE/STOP (ON/OFF) button.OPERATION INDICATOR lamp of the indoor unit turns on with a beep tone.(2) Select COOL mode

2PART NAMES AND FUNCTIONSINDOOR UNITMCFH-18TN - MCFH-24TN -S1S1(When installed on the floor)(When the air inlet grille is opened.)Deodorizing filter

20(4) VANE AUTO ( ) modeIn VANE AUTO mode, the microprocessor automatically determines the vane angle and operation to make the optimumroom-temperatur

217-6. TIMER OPERATION1. How to set the timer(1) Press OPERATE/STOP (ON/OFF) button to start the air conditioner.(2) Check that the current time is se

22EMERGENCYOPERATION switchPress once <Cool>Press again <Heat>Press once again <Stop>OPERATION INDICATOR lamp• The followi

23SERVICE FUNCTIONS8MCFH-18TN - MUCFH-18TN -MCFH-24TN - MUCFH-24TN -S1S1S1S18-1. COMPULSORY DEFROSTING MODE FOR SERVICEBy short circuit of the con

24How to set the remote controller exclusively for particular indoor unitAfter you turn the breaker ON, the first remote controller that sends the sig

251. Troubleshooting check tablew Before taking measures, make sure that the symptom reappears, for accurate trou-bleshooting.Self check tableWhen ser

26Measure the resistance between the terminals with a tester.(Part temperature10°C ~ 30°C)Compressor(MC)INNER PROTECTOR165i 8: ON102i15: OFFRoom tempe

27Check of indoor fan motorACheck of remote controller and receiver P.C. boardBIndoor fan motor does not operate.Turn OFF power supply.Check connector

28Check of indoor electronic control P.C. boardCThe unit doesn’t operate with the remote controller.Also, the OPERATION INDICATOR lamp doesn’t light u

29<MUCFH-24TN - >S1YesIs there 5V DC between J101 - J401 on the deicer P.C. board? w1Compressor doesn't operate.YesIs there 220V AC

3ON/OFFTOOCOOL PMAMTOOWARMON/OFFFANTOOWARMTOOCOOLVANEMODE STOP STARTHR.MIN.I FEELCOOLHEATDRY PMCLOCKAMRESET CLOCKOpen the front lid.Sign

30EECheck of outdoor unit<MUCFH-24TN - >S1After 30 seconds, does compressor stop?NoYesIs there 220V AC between A1-A2 on the compressor contacto

31GGHow to check mis-wiring and serial signal error (when outdoor unit does not work)YesYes1. Turn OFF the power supply.2. Turn ON the power supply.3.

32DE00R697BTo the indoorelectronic controlP.C.board CN113Indoor coil thermistor (RT12)Room temperature thermistor (RT11)RT11EMERGENCY OPERATION switch

33+}}+}+}}}}}+J9J8Fan motor CN721 1-3R.V. coil220V ACR6015~10V DCPower supply input 220V ACFuse 2A/250VDefrost intervaltime short pin(JP607,R853)(Refe

34MUCFH-24TN -Outdoor deicer P.C. boardS1Fuse 3.15A / 250VDefrost intervaltime short pin(JPG1,R871)(Refer to page 23.)12V DCJumper wire forchange in

35DISASSEMBLY INSTRUCTIONS10OPERATING PROCEDURE PHOTOS1. Removing the electronic control P.C. board.(1) Pull out the upper part of the grille. (Photo

36OPERATING PROCEDURE PHOTOS3. Removing the indoor heat exchanger.(1) Remove the grille. (Refer to 1(1) (2))(2) Remove the screws on both side and in

37OPERATING PROCEDURE PHOTOS1. Removing the cabinet(1) Remove the screws of the cabinet.(2) Hold the down of the cabinet on the both side to removethe

38Photo 4Propeller fanSet screws of the outdoor fan motorLead clampsOutdoorfan motorPropeller fan nutSet screws of the outdoor fan motorOPERATING PRO

3910-3. MUCFH-24TN -OUTDOOR UNITS1OPERATING PROCEDURE PHOTOSPhoto 1Photo 2Photo 4Propellerfan nutValve bedSeparator support plateMotor supportPropel

4SPECIFICATION2ModelFunctionPower supplyCapacityElectrical dataCurrentInputkWkcal/hAWMCFH-18TN -Single phase, 220V, 60Hz840/696/570 2,10098550.420.4

40OPERATING PROCEDURE PHOTOSPhoto 5Photo 6Photo 7Stop valveHeat exchangerAccumulatorScrewsScrewsRearpanelSidepanelRear guard4. Removing the heat excha

41PARTS LIST11MCFH-18TN - (WH)MCFH-24TN - (WH)11-1. INDOOR UNITSTRUCTURAL PARTSS1S1Part number that is circled is not shown in the illustration.No.P

42Part numbers that are circled are not shown in the illustration.MCFH-18TN - (WH)MCFH-24TN - (WH)11-2. INDOOR UNIT ELECTRICAL PARTSS1S112345678910E

43Symbolin WiringDiagramQ'ty/unitMUCFH-18TN-RemarksPart No. Part NameS1E02 140 233E02 141 232E02 141 521E02 139 630E02 141 501E02 139 515E02 138

44MUCFH-24TN -11-5. OUTDOOR UNIT STRUCTURAL PARTS, ELECTRICAL PARTS AND FUNCTIONAL PARTSS11528626252482201732322279211978818131415161011124OB286-2.qx

45MUCFH-24TN -11-5. OUTDOOR UNIT STRUCTURAL PARTS, ELECTRICAL PARTS AND FUNCTIONAL PARTSS1MUCFH-24TN - S1Symbolin WiringDiagramQ'ty/unitRemarks

46OPTIONAL PARTS1212-1. REFRIGERANT PIPESThe air conditioner has flared connections its indoor and outdoor sides.Please use the optional extension pip

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New publication, effective Oct. 2001Specifications subject to change without notice.CCCopyright 2001 MITSUBISHI ELECTRIC ENGINEERING CO.,LTDDistribute

5ModelFunctionPower supplyCapacityElectrical dataCurrentInputkWkcal/hAWSSA 385/386 W1CapacityElectrical dataCapacityDehumidificationAir flowW2 (High/M

61621958(When installed on the floor)(When installed on the ceiling)50cm or more50cm or more50cm or more50cm or more100cm or more650616.580.8 906 112.

7100 101000For 10 units or less200Outdoor Unit-Necessary surrounding clearance(Concentrated installation)The upper side must be open.Outdoor Unit-Nece

8WIRING DIAGRAM4GRN/YLWTBPOWER SUPPLY[ 220V60HzGRN/YLW3BRNN2BLUWHTBLUTO OUTDOORUNITCONNECTINGWIRESP.C.BOARDRECEIVERDISP/REMOTECONTROLLERCN104CN151CN20

9HIC1TBNLVG79B062H01CN104SR144LDFHBLKGRN/YLWTRANSMV66CN151BLK12V83REDBRN220V~N2BLUWHTLDCOMLDC11LDC12LDFLLDFMLDFVLSR142SR143SR141GRN/YLWWHTORNREDBLUYLW