Mitsubishi MCFZ-A18WV Manuel de service

SERVICE MANUALWireless typeModelsMCFZ-A12WV -(WH)MCFZ-A18WV -(WH)MCFZ-A24WV -(WH)E1E1E1(When installed on the ceiling)(When installed on the floor)

10TROUBLESHOOTING88-1. Cautions on troubleshooting1. Before troubleshooting, check the following: (1) Check the power supply voltage.(2) Check the ind

118-2. Instruction of troubleshootingStartIndoor unit operates.Outdoor unit doesn't operate.Indoor unit doesn't receive the signal from rem

12No.12345SymptomOperation indicator lamp Detection methodCheck pointMis-Wiringor Serial signalOutdoor power systemOutdoor thermistorOutdoor control s

132. Trouble criterion of main partsMCFZ-A12WV - MCFZ-A18WV - MCFZ-A24WV -E1E1E1Check of indoor fan motorAIndoor fan does not operate.Turn OFF powe

14Check of indoor electronic control P.C. boardCThe unit does not operate with the remote controller.Also, the OPERATION INDICATOR lamp doesn’t light

15How to check mis-wiring and serial signal error (when outdoor unit does not work)DWhen OPERATION INDICATOR lamp flashes ON and OFF in every 0.5-seco

16As for outdoor units MUZ-A18YV and MUZ-A24YV, refer to service manual OB346 REVISED EDITION-A.Reconnect the power supply cable.Is there 325V DC betw

17DE00R697BTo the indoorelectronic controlP.C.board CN113Indoor coil thermistor (RT12)Room temperature thermistor (RT11)RT11EMERGENCY OPERATION switch

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

19DISASSEMBLY INSTRUCTIONS9OPERATING PROCEDURE PHOTOS1. Removing the electronic control P.C. board.(1) Pull out the upper part of the grille. (Photo 1

PART NAMES AND FUNCTIONS21REMOTE CONTROLLERMCFZ-A12WV -E1INDOOR UNITMCFZ-A12WV - MCFZ-A18WV - MCFZ-A24WV -E1E1E1(When installed on the floor)(When

20OPERATING PROCEDUREPHOTOS3. Removing the indoor heat exchanger.(1) Remove the grille. (Refer to 1(1) (2).)(2) Remove the screws on both side and in

21PARTS LIST10Part 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

23MCFZ-A12WV - MCFZ-A18WV - MCFZ-A24WV -E1E1E1OPTIONAL PARTS1111-2. DEODORIZING FILTER● Clean the filter every two weeks. When it becomes too dirt,

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

3REMOTE CONTROLLERMCFZ-A18WV - MCFZ-A24WV -E1E1ON/OFFFANTOOWARMTOOCOOLVANEMODEECONO COOL STOP STARTHR.MIN.I FEELCOOLHEATDRY PMCLOCKAMRESET

4SPECIFICATION2Indoor modelFunctionPower supplyAir flow(High/Med.W/LowW) Power outletRunning current ✽1Power input ✽1Auxiliary heaterPower factor ✽1Fa

5NOISE CRITERIA CURVES3MCFZ-A12WV -E190807060504030201063 125 250 500 1000 2000 4000 8000NC-60NC-50NC-40NC-30NC-20NC-70OCTAVE BAND SOUND PRESSURE LEV

6OUTLINES AND DIMENSIONS4(When installed on the floor)(When installed on the ceiling)500mm or more500mm or more500mm or more500mm or more1000mm or mor

7INDOOR UNITTAB12ELECTRONIC CONTROL P.C BOARDSR142SR143X144CN201BRNRECEIVERP.C.BOARDCONTROLLERREMOTEDISP/12VCONNECTINGTO OUTDOORUNIT3NRT11P.C.BOARDSW/

8SERVICE FUNCTIONS7REFRIGERANT SYSTEM DIAGRAM67-1. TIMER SHORT MODEFor service, set time can be shortened by short circuit of JPG and JPS on the elect

9Table1.No. 1 unitNo. 2 unitNo. 3 unitNo. 4 unit1 unit operationNo modification–––2 units operationSame as at leftSolder J1––3 units operationSame as