Mitsubishi MCFH-A18WV Manuel de service

SERVICE MANUALWireless typeModelsMCFH-A12WV-(WH)MCFH-A18WV-(WH)MCFH-A24WV-(WH)E1E1E1No. OB336(When installed on the ceiling)(When installed on the flo

10How to release “AUTO RESTART FUNCTION”1Turn off the main power for the unit.2Pull out the electronic control P.C. board. (Refer to page 19.)3Solder

11TROUBLESHOOTING99-1. Cautions on troubleshooting1. Before troubleshooting, check the following: (1) Check the power supply voltage.(2) Check the ind

129-2. Instruction of troubleshootingStartIndoor unit operates.Outdoor unit doesn't operate.Indoor unit doesn't receive the signal from rem

131. Troubleshooting check tableOPERATIONINDICATORlampBefore taking measures, make sure that the symptom reappears, for accurate troubleshooting.Self

AbnormalOpen orshort-circuitMCFH-A24WV80~88Ω44~49Ω35~39Ω43~47Ω13~15Ω14Measure the resistance between the terminals with a tester.(Part temperature10°C

15Measure the voltage between receiver P.C.board connector CN101 No.2 and No.1 when remote controller button is pressed.YesYesCheck of indoor fan

16Check of indoor electronic control P.C. boardCThe unit does not operate with the remote controller.Also, the OPERATION INDICATOR lamp doesn’t light

17YesYesHow to check mis-wiring and serial signal error (when outdoor unit does not work)EStart1. Turn OFF power supply and disconnect indoor/ outdoor

18DE00R697BTo the indoorelectronic controlP.C.board CN113Indoor coil thermistor (RT12)Room temperature thermistor (RT11)RT11EMERGENCY OPERATION switch

19DISASSEMBLY INSTRUCTIONS10OPERATING PROCEDURE PHOTOS1. Removing the electronic control P. C . board.(1) Pull out the upper part of the grille. (Phot

PART NAMES AND FUNCTIONS2TECHNICAL CHANGES21INDOOR UNITMCFH-A12WV -MCFH-A18WV -MCFH-A24WV -E1E1E1(When installed on the floor)(When the air inlet g

20OPERATING 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

21PARTS LIST11Part number that is circled is not shown in the illustration.- E1(WH)Q'ty/unit12345678910111213141516VANE MOTORINSTALLATION METAL (

22Part numbers that are circled are not shown in the illustration.9 84671234567891011SIROCCO FANFAN MOTOR RUBBER MOUNTINDOOR FAN MOTORINDOOR FAN MOTOR

23OPTIONAL PARTS1212-2. DEODORIZING FILTER● Clean the filter every two weeks . When it becomes too dirt , clean it more often .● Replace the filter wi

New publication, effective Jan. 2004Specifications subject to change without notice.CCCopyright 2004 MITSUBISHI ELECTRIC ENGINEERING CO.,LTDDistribute

3REMOTE CONTROLLERMCFH-A12WV -MCFH-A18WV -MCFH-A24WV -E1E1E1ON/OFFFANTOOWARMTOOCOOLVANEMODEECONO COOL STOP STARTHR.MIN.I FEELCOOLHEATDRY

SPECIFICATION43Indoor modelFunctionPower supplyAir flow(High/Med.W/LowW) Power outletRunning currentPower inputAuxiliary heaterPower factorFan motor c

5NOISE CRITERIA CURVES4MCFH-A24WV -E190807060504030201063 125 250 500 1000 2000 4000 8000NC-60NC-50NC-40NC-30NC-20NC-70OCTAVE BAND SOUND PRESSURE LEV

OUTLINES AND DIMENSIONS65(When installed on the floor)(When installed on the ceiling)50cm or more50cm or more50cm or more50cm or more100cm or more6506

7WIRING DIAGRAM6INDOOR UNITTAB12ELECTRONIC CONTROL P.C BOARDSR142SR143X144CN201BRNRECEIVERP.C.BOARDCONTROLLERREMOTEDISP/12VCONNECTINGTO OUTDOORUNIT3NR

8REFRIGERANT SYSTEM DIAGRAM7INDOOR UNITMCFH-A24WV- E1IndoorheatexchangerDistributorFlared connectionRoom temperaturethermistorRT11Flared connectionRef

9SERVICE FUNCTIONS88-1. TIMER SHORT MODEFor service, set time can be shortened by short circuit of JPG and JPS on the electronic control P.C. board.Th