Mitsubishi Electric MSH-C24TV Manuel de service

SERVICE MANUALSPLIT-TYPE, HEAT PUMP AIR CONDITIONERSCONTENTS1. TECHNICAL CHANGES ····································2 2. PART NAMES AND FUNCTIONS····

10100 101000For 10 units or less200Outdoor Unit-Necessary surrounding clearance(Concentrated installation)The upper side must be open.Outdoor Unit-Nec

11WIRING DIAGRAM6MSH-C18TV -E1MUH-C18TV -E1MODEL WIRING DIAGRAMMODEL WIRING DIAGRAMINDOOR UNITOUTDOOR UNITBRNBRNBLU102CN151CN101CNREMOTECONTROLLER3R

12MSH-C24TV -E1MUH-C24TV -E1MODEL WIRING DIAGRAMMODEL WIRING DIAGRAMINDOOR UNITOUTDOOR UNITWHTWHTBLU102CN151CN101CNREMOTECONTROLLER3RECEIVERP.C. BOA

13REFRIGERANT SYSTEM DIAGRAM7MSH-C18TV -E1MUH-C18TV -E1INDOOR UNITOUTDOOR UNITIndoorheatexchangerRoom temperaturethermistorRT11Refrigerant pipe [15.

14Model Piping size O.D : mm Length of connecting pipe : mRefrigerant pipingMax. length : m A15Indoor unitGas 0.43Liquid 0.5Gas15.88Liquid6.359.52Outd

15PERFORMANCE CURVES811.47.48.39.310.412.513.58.69.811.012.214.9MSH-C18TV - E1MSH-C24TV - E1The standard data contained in these specifications appl

1631.128.726.324.021.619.216.814.436.133.330.527.725.022.219.416.6MSH-C18TV - E1MSH-C24TV - E1NOTE:The above curves are for the heating operation wi

17HEAT operationCondition indoor:Dry bulb temperature 20.0°CWet bulb temperature 14.5°COutdoor:Dry bulb temperature 7,15,20°CWet bulb temperature 6,12

18MSH-C18TV - : MUH-C18TV - (230V)E1E121212222222323232424242425252525262626262627272727272828282828292929292930303030303131313131323232323218201820

192121222222232323242424242525252526262626262727272727282828282829292929293030303030313131313132323232321820182022182022182022241820222418202224261820

2TECHNICAL CHANGES1MSH-C18SV - ➔MSH-C18TV -1. Rated voltage has changed to 230V.2. Remote controller has changed.• SLEEP MODE function has been remo

20MSH-C24TV - : MUH-C24TV - (230V)E1E121212222222323232424242425252525262626262627272727272828282828292929292930303030303131313131323232323218201820

212121222222232323242424242525252526262626262727272727282828282829292929293030303030313131313132323232321820182022182022182022241820222418202224261820

22OUTDOOR WB(:)INDOOR-10 -5 0 5 10 15 20DB(:)Q INPUT Q INPUT Q INPUT Q INPUT Q INPUT Q INPUT Q INPUTCAPACITY : 6.0(KW)INPUT : 2180(W)1521263.783.603

23MICROPROCESSOR CONTROL9Once the operation mode are set, the same operation modecan be repeated by simply turning the OPERATE/STOP(ON/OFF) button ON.

24ModelCOOL mode of"I FEEL CONTROL"DRY mode of"I FEEL CONTROL"HEAT mode of"I FEEL CONTROL"Initial room temperature In

25Operation time chartExample3. Coil frost prevention • The operation is as same as coil frost prevention during COOL mode of “I FEEL CONTROL”.• Indoo

269-1-3. HEAT mode of “I FEEL CONTROL” 1. Indoor fan speed control(1) In AUTO the fan speed is as follows.Set temperature minus room temperature: 2 de

27NOTE • When the indoor coil thermistor RT12 reads above 18°C, indoor fan operates at Very Low for 30 seconds.• When the indoor coil thermistor RT1

289-2. 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

29HighRotational frequencyHightimeMed.Low9-6. AUTO VANE OPERATION(1) Vane motor driveThese models are equipped with a stepping motor for the horizonta

3LubricantRefrigerantNew refrigerantR407CR32: R125: R134a (23%:25%:52%)Non-azeotropic refrigerantNot includedA1/A186.2-43.60.917742.5Non combustible01

30(5) STOP (operation OFF) and ON-TIMER standby.When the following cases occur, the horizontal vane returns to the closed position.(a) When the OPERAT

319-7. 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

32EMERGENCY OPERATION switchPress once <Cool>Press again <Heat>Press once again <Stop>OPERATION INDICATOR lamp9-8. EMERGEN

33SERVICE FUNCTIONS1010-1. COMPULSORY DEFROST MODE FOR SERVICEBy short circuit of the JP607 and R853(MSH-C18TV)/JPG1 and R871(MSH-C24TV) on the outdoo

34When the indoor unit is controlled with the remote controller, the operation mode, set temperature, and the fan speed arememorized by the indoor ele

35TROUBLESHOOTING1111-1. Cautions on troubleshooting1. Before troubleshooting, check the following:(1) Check the power supply voltage.(2) Check the in

3611-2. Instruction of troubleshooting❈1<The case of the trouble of the serial signal>When the power is turned off and then turned on again, the

371. Troubleshooting check tableBefore taking measures, make sure that the symptom reappears, for accurate troubleshooting.Self check tableNO.1234Abno

38Measure the resistance between the terminals with a tester.(Coil wiring temperature10°C ~ 30°C)Compressor(MC)Room temperaturethermistor(RT11)2. Trou

39YesYesCheck of indoor fan motorACheck of remote controller and receiver P.C. boardBIndoor fan motor does not operate.Repair or replace the indoor fa

41.Tools dedicated for the air conditioner with R407C refrigerantThe following tools are required for R407C refrigerant. Some R22 tools can be substit

40Check of indoor electronic control P.C. boardCCheck of outdoor unitDCompressor and / or outdoor fan motor doesn’t operate.(Only indoor fan operates.

41MSH-C24TVYesIs there 5V DC between J101 - J401 on the deicer P.C. board? Refer to page 46. Compressor doesn't operate.YesIs there 230V AC

42Check of R.V. coilFAfter 3 minutes, is there 230V AC between CN721 1-3 on the deicer P.C. board?Replace the deicer P.C. board.YesNoReplace the R.V.

43YesYesHow to check mis-wiring and serial signal errorG1. Turn OFF the power supply.2. Turn ON the power supply.3. Press the EMERGENCY OPERATIONswitc

44TEST POINT DIAGRAM AND VOLTAGEMSH-C18TV -MSH-C24TV -E1E1Fan motor CN211Fuse(F11)250V AC 3.15A}Power supply input230V AC+}5V DCIndoor coil thermist

45MUH-C18TV -Outdoor deicer P.C. boardE1Fan motor CN711230V ACR.V. coil230V ACR6015~10V DC(Refer to page 43.)+230V ACCN661Defrost thermistor(RT61)(Re

46MUH-C24TV -Outdoor deicer P.C. boardE1VaristorNR62Fuse(F61) 3.15A / 250VDefrostintervaltime shortpin(JPG1,R871)(Refer topage 33.)}12V DCJumper wire

47DISASSEMBLY INSTRUCTIONS12OPERATING PROCEDURE12-1. MSH-C18TV - MSH-C24TV -INDOOR UNITE1E1PHOTOS1. Removing the front panel(1) Remove the screw ca

48OPERATING PROCEDUREPHOTOS3. Removing the electrical box(1) Remove the front panel. (Refer to 1)(2) Remove the electrical cover.(3) Disconnect the co

49OPERATING 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

5PART NAMES AND FUNCTIONS2INDOOR UNIT(When the grille is open)Front panelMSH-C18TV -MSH-C24TV -E1E1Drainage hosePipingAir inletAir outletDrain outle

50OPERATING PROCEDURE PHOTOS3. Removing the outdoor fan motor(1) Remove the cabinet. (Refer to 1)(2) Disconnect the connector remove the clamp of fan

5112-3. MUH-C24TV -OUTDOOR UNITE1OPERATING PROCEDURE PHOTOSPhoto 1Photo 2Photo 4Propellerfan nutValve bedSeparator support plateMotor supportPropell

52OPERATING PROCEDURE PHOTOSPhoto 5Photo 6Photo 7Stop valveHeat exchangerScrewsScrewsRearpanelSidepanelRear guard4. Removing the heat exchanger and co

53PARTS LIST13Symbolin WiringDiagramQ'ty/unitIncluding 4,53PCS/SETRemarksPart No.NO.Part NameMSH-C18TV- 1234567INSTALLATION PLATEBOX(WH)FRONT PAN

541234567891011121314151617181920NO.E02 141 302E02 001 504E02 141 509E02 408 702E02 143 235E02 143 040E02 138 307E02 141 303E02 138 395E02 320 395E02

55Symbolin WiringDiagramQ'ty/unitMUH-C18TV-RemarksPart No. Part NameE1E02 140 233E02 141 232E02 141 521E02 643 630E02 141 501E02 139 515E02 138 5

56MUH-C24TV -13-6. OUTDOOR UNIT STRUCTURAL PARTS, ELECTRICAL PARTS AND FUNCTIONAL PARTSE11352722524912623287421319141110222126820161518178OB279-2.qxp

57MUH-C24TV -13-6. OUTDOOR UNIT STRUCTURAL PARTS, ELECTRICAL PARTS AND FUNCTIONAL PARTSE1MUH-C24TV - E1Symbolin WiringDiagramQ'ty/unitRemarksPar

58OPTIONAL PARTS14Deodorizing filter (Gray sponge type)Air cleanig filter (White bellows type)14-1. AIR CLEANING FILTER● AIR CLEANING FILTER removes f

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6REMOTE CONTROLLERMSH-C18TV -MSH-C24TV -E1E1ON/OFFTOOCOOL PMAMTOOWARMON/OFFFANTOOWARMTOOCOOLVANEMODEECONO COOL STOP STARTHR.MIN.I FEELCOOLH

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

7SPECIFICATION3Indoor modelFunctionPower supplyCapacityDehumidificationAir flow(High)Power outletRunning currentPower inputAuxiliary heaterPower facto

8NOISE CRITERIA CURVES490807060504030201063 125 250 500 1000 2000 4000 8000NC-60NC-50NC-40NC-30NC-20NC-70OCTAVE BAND SOUND PRESSURE LEVEL, dB re 0.000

9OUTLINES AND DIMENSIONS5Unit: mmOUTDOOR UNITMSH-C18TV -MSH-C24TV -E1E1MUH-C18TV -E1INDOOR UNIT3 297450450352438254206040150 648 217519099519077550