Mitsubishi MS-18RV Service Manual

SERVICE MANUALSPLIT-TYPE AIR CONDITIONERSCONTENTS1. TECHNICAL CHANGES ····································22. PART NAMES AND FUNCTIONS················

10OUTLINES AND DIMENSIONS5MS-18RV -MS-24RV -E1E1MU-18RV -MU-24RV -E1E1OUTDOOR UNITINDOOR UNIT3 297450450352438254206040150 648 2175190995190775503

111621958477.5315255.5472.598 17398 173414.5 414.552252537915610681100325Air outAir inInsulation [ 28Drain hose [ 16(Connected part O.D){Liquid line [

12100 101000For 10 units or less200Outdoor Unit-Necessary surrounding clearance(Concentrated installation)The upper side must be open.Outdoor Unit-Nec

13WIRING DIAGRAM6MU-18RV -E1MODEL WIRING DIAGRAMOUTDOOR UNITSYMBOLC1C2SYMBOLFMCSYMBOLMFTBNAMENAME NAMECOMPRESSOR CAPACITOROUTDOOR FAN CAPACITORFUSE(2

14MS-24RV -E1MU-24RV -E1MODEL WIRING DIAGRAMMODEL WIRING DIAGRAMINDOOR UNITOUTDOOR UNITSYMBOLRT12TB52CSYMBOLIC141MFMVNR11RT11SYMBOLC11DSARF11F12HIC1

15INDOOR UNITTBTAB1233REMOTECONTROLLERRECEIVERP.C.BOARDDISPLAYP.C.BOARD102CN101CNREDBLUMV2GRN/YLWTO OUTDOORUNITCONNECTING12VCN201321BRNLN3220-240V~F11

16OUTDOOR UNITDEICER P.C. BOARDLPEYLWBLKWHTCIRCUIT BREAKER 152C2CZWHTWHTREDC2ORNCN730220-240V~N12V3LNA2 A1WHTBLU52CDSARTB1TO INDOOR UNITCONNECTINGWHTC

17REFRIGERANT SYSTEM DIAGRAM7MS-18RV -E1MU-18RV -E1INDOOR UNITOUTDOOR UNITIndoorheatexchangerRoom temperaturethermistorRT11Refrigerant pipe [15.88(w

18IndoorheatexchangerOutdoorheatexchangerFlared connectionRoom temperaturethermistorRT11Indoor coil thermistorRT13(sub)DischargetemperaturethermistorR

19Indoor unitw Max. Height difference 5m (MS-18/24RV) /15m(MS-30RV)w Height difference should be within 5m(MS-18/24RV) /15m(MS-30RV) regardle

2TECHNICAL CHANGESMS-18NV - ➔MS-18RV -MS-24NV - ➔MS-24RV -1. Remote controller has been changed.• SLEEP MODE function has removed.• ECONO COOL ope

20MS-18RV - E1MS-24RV - E114.913.512.211.09.88.6MS-30RV - E118.917.115.413.712.210.7PERFORMANCE CURVESThe standard data contained in these specificati

2111Both indoor and outdoor unit are under the same temperature/humidity condition.OUTDOOR LOW PRESSURE AND OUTDOOR UNIT CURRENTCOOL operation22Air fl

22PERFORMANCE DATACOOL operationMS-18RV - : MU-18RV - (220V)E1E1NOTE Q : Total capacity (kW) SHF : Sensible heat factor DB: Dry-bulb temperatureSH

23PERFORMANCE DATACOOL operationMS-18RV - : MU-18RV - (220V)E1E1NOTE Q : Total capacity (kW) SHF : Sensible heat factor DB: Dry-bulb temperatureSH

24PERFORMANCE DATACOOL operationMS-18RV - : MU-18RV - (240V)E1E1INDOOR INDOOR21 25 27 30DB(:) WB(:)Q SHC SHF INPUT Q SHC SHF INPUT Q SHC SHF INPUT Q

25PERFORMANCE DATACOOL operationMS-18RV - : MU-18RV - (240V)E1E1INDOOR INDOOR35 40 43 46DB(:) WB(:)Q SHC SHF INPUT Q SHC SHF INPUT Q SHC SHF INPUT Q

26PERFORMANCE DATACOOL operationMS-24RV - : MU-24RV - (220V)E1E1NOTE Q : Total capacity (kW) SHF : Sensible heat factor DB: Dry-bulb temperatureSH

27PERFORMANCE DATACOOL operationMS-24RV - : MU-24RV - (220V)E1E1NOTE Q : Total capacity (kW) SHF : Sensible heat factor DB: Dry-bulb temperatureSH

28PERFORMANCE DATACOOL operationMS-24RV - : MU-24RV - (240V)E1E1INDOOR INDOOR21 25 27 30DB(:) WB(:)Q SHC SHF INPUT Q SHC SHF INPUT Q SHC SHF INPUT Q

29PERFORMANCE DATACOOL operationMS-24RV - : MU-24RV - (240V)E1E1INDOOR INDOOR35 40 43 46DB(:) WB(:)Q SHC SHF INPUT Q SHC SHF INPUT Q SHC SHF INPUT Q

3PART NAMES AND FUNCTIONS2INDOOR UNITRemote controlreceiving sectionAir cleaning filter(option)Deodorizing filter(option)Front panelGrille(When the gr

30PERFORMANCE DATACOOL operationMS-30RV - : MU-30RV - (220V)E1E1NOTE Q : Total capacity (kW) SHF : Sensible heat factor DB: Dry-bulb temperatureSH

31PERFORMANCE DATACOOL operationMS-30RV - : MU-30RV - (220V)E1E1NOTE Q : Total capacity (kW) SHF : Sensible heat factor DB: Dry-bulb temperatureSH

32PERFORMANCE DATACOOL operationMS-30RV - : MU-30RV - (240V)E1E1INDOOR INDOOR21 25 27 30DB(:) WB(:)Q SHC SHF INPUT Q SHC SHF INPUT Q SHC SHF INPUT Q

33PERFORMANCE DATACOOL operationMS-30RV - : MU-30RV - (240V)E1E1INDOOR INDOOR35 40 43 46DB(:) WB(:)Q SHC SHF INPUT Q SHC SHF INPUT Q SHC SHF INPUT Q

34Once the operation mode are set, the same operation modecan be repeated by simply turning theOPERATE/STOP(ON/OFF) button ON.Indoor unit receives the

35ExamplePrevious operationCOOL mode of “I FEEL CONTROL” orCOOL mode● Once the mode is fixed, the mode does not change by room temperature afterwards

36CompressorOutdoor fan OFFON(continuously at set speed)Indoor fan ONONOFFOperation chartExample4. Discharge temperature protection <MS-30RV only&

379-1-2. DRY mode of “I FEEL CONTROL”The system for dry operation uses the same refrigerant circuit as the cooling circuit.The compressor and the indo

38HighMed.LowHigh9-5. FAN MOTOR CONTROL(1) Rotational frequency feedback controlThe indoor fan motor is equipped with a rotational frequency sensor, a

39(3) PositioningThe vane is once pressed to the vane stopper below to confirm the standard position and then set to the desired angle.Confirming of s

4REMOTE CONTROLLERON/OFFTOOCOOL PMAMTOOWARMON/OFFFANTOOWARMTOOCOOLVANEMODEECONO COOL STOP STARTHR.MIN.I FEELCOOLDRY PMCLOCKAMRESETCLOCKF

40(8) ECONO COOL ( ) operation (ECONOmical operation)When the ECONO COOL button is pressed in COOL mode, set temperature is automatically set 2°C high

412. CancelTIMER setting can be cancelled with the ON/OFF TIMER buttons.To cancel the ON timer, press the “ON-TIMER” button.To cancel the OFF timer, p

429-8. EMERGENCY-TEST OPERATIONIn case of test run operation or emergency operation, use the EMERGENCY OPERATION switch on the front of theindoor unit

439-9. LEV control <MS-30RV only>LEV (Expansion valve) is controlled by “Thermostat ON” commands given from the unit.Controlled rangeBasic speci

442 When the temperature difference RT between indoor coil thermistor (main) RT12 and indoor coil thermistor (sub)RT13 in the indoor unit is 2: or mo

45SERVICE FUNCTIONS1010-2. P.C. BOARD MODIFICATION FOR INDIVIDUAL OPERATIONA maximum of 4 indoor units with wireless remote controllers can be used in

4610-3. AUTO RESTART FUNCTIONWhen the indoor unit is controlled with the remote controller, the operation mode, set temperature, and the fan speed are

47TROUBLESHOOTING1111-1. Cautions on troubleshooting1. Before troubleshooting, check the following:1) Check the power supply voltage.2) Check the indo

4811-2. Instruction of troubleshootingStartIndoor unit operates.Outdoor unit doesn't operate.Indoor unit doesn't receive the signal from re

491. Troubleshooting check tableBefore taking measures, make sure that the symptom reappears for accurate troubleshooting.Self check table• The follow

5REMOTE CONTROLLERMS-30RV -E1ON/OFFTOOCOOL PMAMTOOWARMON/OFFFANTOOWARMTOOCOOLVANEMODEECONO COOL STOP STARTHR.MIN.WIDE VANELONGI FEELCOOLDR

502. Trouble criterion of main partsMS-18RV - MU-18RV -MS-24RV - MU-24RV -MS-30RV - MU-30RV -E1E1E1E1E1E1Part name FigureCheck method and criter

51Part name FigureCheck method and criterion: INNER PROTECTORPOutdoor fan moter(MF)Horizontal vane motor(MV1)Vertical vane motor(MV2)<MS-30RV only&

52Replace the receiver P.C. board.Replace the remote controller.Replace the batteries.(Refer to page 47.)Switch on the remote controller.Repair or rep

53Check the conti-nuity of indoorand outdoor unitconnection.Replace the indoor electronic con-trol P.C. board.Check of indoor electronic control P.C.

54Is there 220-240V AC between L-N on the outdoor terminal block?NoCheck the outdoor power supply and connection of wiring.YesCompressor does not oper

55Check of outdoor unitECompressor and / or outdoor fan motor doesn’t stop.After 30 seconds, does compressor stop?NoYesIs there 220-240V AC between A1

56How to check mis-wiringF1. Turn OFF the power supply and disconnect the indoor/ outdoor unit connecting wire at the terminal block 3 of the indo

57Check of outdoor thermistorMeasure resistance between CN 662 3 and 4.NoYesReplace the thermistor.Measure resistance between CN 662 1 and 2.Connect C

58TEST POINT DIAGRAM AND VOLTAGEMS-18RV - MS-24RV -Indoor electronic control P.C. boardE1E1Indoor coil thermistor(RT12)Room temperature thermistor (

59TEST POINT DIAGRAM AND VOLTAGEMS-30RV -Indoor electronic control P.C. boardE1Fan motor power supplyFuse (F11) 250V AC 3.15A}Power supply input220-2

6SPECIFICATION3Indoor modelFunctionPower supplyCapacityDehumidificationAir flow(High)Power outletRunning currentPower inputAuxiliary heaterPower facto

60MU-30RV -Outdoor deicer P.C. boardE1Varistor(NR62)Fuse (F61)3.15A / 250V}12V DC}5V DC++Temperature(:)Discharge temperature thermistor(RT62)Resistan

61DISASSEMBLY INSTRUCTIONS12(1) Slide the sleeve and check if there is a locking lever or not. (2) The terminal with this connector is a terminal with

62OPERATING PROCEDURE PHOTOSPhoto 4Photo 5Heat exchangerscrewCatchBearing supportscrewsHeat exchangerIndoor fan motorLine flow fanScrew of themotor ba

63OPERATING PROCEDURE PHOTOS1. Removing the front panel(1) Remove the screws caps of the front panel.Remove the screws.(2) Pull the panel down to your

64OPERATING PROCEDURE PHOTOSPhoto 4Photo 6Vane motorsIndoorcoilthermistorPhoto 33. Removing the electrical box(1) Remove the front panel. (Refer to 1)

65OPERATING PROCEDURE PHOTOS1. Removing the cabinet(1) Remove the screws of the cabinet.(2) Hold the bottom of the cabinet on the both side to removet

66PHOTOS3. Removing the outdoor fan motor(1) Remove the cabinet. (Refer to 1)(2) Disconnect the connector remove the hooked lead wirefrom the fan moto

6712-4. MU-30RV -OUTDOOR UNITE1OPERATING PROCEDURE PHOTOSPhoto 1Photo 2Photo 4Separator support plateScrews of the cabinetTop panelService panelCove

68OPERATING PROCEDURE PHOTOSPhoto 5Photo 6Photo 7CompressorStop valveHeat exchangerAccumulatorScrewsScrewsRearpanelSidepanelRear guard4. Removing the

69PARTS LIST13MS-18RV - (WH)MS-24RV - (WH)13-1. INDOOR UNITSTRUCTURAL PARTSE1E1E02 141 970E02 143 234E02 138 000E02 138 010E02 143 067E02 141 100E02

7Indoor modelFunctionPower supplyCapacityDehumidificationAir flow(High)Power outletRunning currentPower inputAuxiliary heaterPower factorStarting curr

70MS-18RV - (WH)MS-24RV - (WH)13-3. INDOOR UNIT FUNCTIONAL PARTSAND ELECTRICAL PARTSE1E1E02 141 302E02 001 504E02 141 509E02 408 702E02 143 235E02 1

MU-18RV -MU-24RV -13-5. OUTDOOR UNITSTRUCTURAL PARTS, ELECTRICAL PARTS AND FUNCTIONAL PARTSE1E171Symbolin WiringDiagramRemarksPart No.NO.Part NameMU

72MS-30RV - (WH)13-6. INDOOR UNIT STRUCTURAL PARTSE1MS-30RV - E1E02 527 970E02 527 234E02 527 000E02 408 142E02 527 067E02 527 010E02 52

73MS-30RV - E1E02 527 302E02 408 509E02 001 504E02 408 702E02 527 235E02 527 040E02 527 041E02 127 382E02 336 385E02 527 034E02

74MU-30RV -13-10. OUTDOOR UNIT STRUCTURAL PARTS, ELECTRICAL PARTS AND FUNCTIONAL PARTSE1135272252410723611288421319142221269201615121817AB9OB271--3.qx

75MU-30RV -13-10. OUTDOOR UNIT STRUCTURAL PARTS, ELECTRICAL PARTS AND FUNCTIONAL PARTSE1MU-30RV - E1E02 214 297E02 528 309E02 527 630E02 527 301 E07

OPTIONAL PARTS14Part No.ModelMAC-1100FTMAC-1700FTMS-18RV -MS-24RV -MS-30RV-E1E1E1Part No.ModelMAC-1600DFMAC-2200DFMS-18RV -MS-24RV -MS-30RV-E1E1E1Deod

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

990807060504030201063 125 250 500 1000 2000 4000 8000OCTAVE BAND SOUND PRESSURE LEVEL, dB re 0.0002 MICRO BARBAND CENTER FREQUENCIES, HzTest condition