Mitsubishi MSH-A18ND Manuel de service

CONTENTS1. TECHNICAL CHANGES ····································22. PART NAMES AND FUNCTIONS······················33. SPECIFICATION··················

10PERFORMANCE CURVES7The standard data contained in these specifications apply only to the operation of the air conditioner under normal conditions.Si

1110.09.08.07.06.05.0151820506070253032 35(:) (%)MU-A24NDMU-A24NDOutdoor low pressure Outdoor unit current (A)Ambient temperatur

12MU-A30ND15 18 20502560 30 32 70 35(:) (%)0.20.30.40.50.62.03.04.05.06.015 18 20 502560

13StartIndoor unit operates.Outdoor unit dose not operate.Indoor unit dose not receive the signal from remote controller.OPERATION INDICATORlamp on th

148-3. Trouble criterion of main partsMU-A18ND MU-A24ND MU-A30NDPart name FigureCheck method and criterionMeasure the resistance between the termi

15Is there 220-230V AC to between L-N on the outdoor terminal block?NoCheck the outdoor power supply and connection of wiring.YesCheck the deicer P.C.

16Compressor and / or outdoor fan motor dose not stop.After 30 seconds, did compressor stop?NoYesReplace the deicer P.C. board.Yes1 Turn OFF the power

17How to check mis-wiringC1. Turn OFF the power supply and disconnect only terminal block 3 of indoor/ outdoor connecting wire on indoor side.2. Short

18Check of outdoor thermistorMeasure resistance between CN 662 3 and 4.NoYesReplace the thermistor.Measure resistance between CN 662 1 and 2.Connect C

19OkDo you hear "click" from the solenoid valve coil?NoYesAfter 1minute or more has passed since the compressor started, operate the solenoi

2TECHNICAL CHANGES12Compressor: NH30VCD ➞ RH247NRATCompressor: RH277NHD ➞ RH247NRATElectricity receiving unit: Indoor unit ➞ Outdoor unitGas pipe diam

208-5. Test point diagram and voltageMU-A30NDOutdoor deicer P.C. boardVaristor(NR62)Fuse 3.15A / 250V}12V DC}5V DC++Temperature(:)Discharge temperatur

21DISASSEMBLY INSTRUCTIONS9(1) Slide the sleeve and check if there is a locking lever or not.(2) The terminal with this connector has the locki

22OPERATING PROCEDUREPHOTOS2. Removing the electrical parts(1) Remove the service panel and the cabinet.(2) Remove the following parts.•Compressor cap

239-2. MU-A24NDOUTDOOR UNIT OPERATING PROCEDUREPHOTOS1.Removing the cabinet(1) Remove the screw of the service panel.(2) Remove the screws of the to

24Photo 6Suction pipeDischarge pipeTerminal coverOPERATING PROCEDUREPHOTOS3. Removing the propeller and the outdoor fan motor(1) Remove the cabinet. (

259-3. MU-A30NDOUTDOOR UNIT OPERATING PROCEDUREPHOTOS1.Removing the cabinet(1) Remove the screw of the service panel.(2) Remove the screws of the to

26Photo 6Suction pipeDischarge pipeTerminal coverOPERATING PROCEDUREPHOTOS3. Removing the propeller and the outdoor fan motor(1) Remove the cabinet. (

27PARTS LIST (non-RoHS compliant)10MU-A18ND10-1. OUTDOOR UNITSTRUCTURAL PARTS, ELECTRICAL PARTS AND FUNCTIONAL PARTS11813141217456109823719162015MU-A1

28MU-A24ND MU-A30ND10-2. OUTDOOR UNIT STRUCTURAL PARTS, ELECTRICAL PARTS AND FUNCTIONAL PARTS4231510111 1226789171617181920212425262732251314ABPARTS

29 MU-A24ND - S1 MU-A24ND - S2 MU-A30ND - S1Symbolin WiringDiagramQ'ty/unitRemarksPart No.No.Part NameE02 819 297E02 890 630

3PART NAMES AND FUNCTIONS2SPECIFICATION3Outdoor modelFunctionPower supplyCapacityDehumidificationAir flow (High/Low)Power outletRunning current (Total

30RoHS PARTS LIST (RoHS compliant)11MU-A18ND11-1. OUTDOOR UNITSTRUCTURAL PARTS, ELECTRICAL PARTS AND FUNCTIONAL PARTS1181314121745610982371916201511OB

31MU-A18ND 11-1. OUTDOOR UNITSTRUCTURAL PARTS, ELECTRICAL PARTS AND FUNCTIONAL PARTSMU-A18ND - S1Symbolin WiringDiagramQ'ty/unitRemarksPart No. P

32MU-A24ND MU-A30ND 11-2. OUTDOOR UNIT STRUCTURAL PARTS, ELECTRICAL PARTS AND FUNCTIONAL PARTS4231510111 1226789171617181920212425262732251314ABRoH

33MU-A24ND - S1MU-A24ND - S2MU-A30ND - S1MU-A30ND - S2Symbolin WiringDiagramQ'ty/unitRemarksPart No.RoHSNo.Part NameE12 819 297E12 890 630E12

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HEAD OFFICE: TOKYO BLDG, 2-7-3, MARUNOUCHI, CHIYODAKU, TOKYO 100-8310, JAPANCCCopyright 2005 MITSUBISHI ELECTRIC ENGINEERING CO.,LTDDistributed in Oct

4OUTLINES AND DIMENSIONS4Unit: mm100mm or more350mm or more100mm or more100mm or moreREQUIRED SPACE500mm or more100157161Liquid refrigerantpipe joint

530-35-155901984051529966345133036085043050080121840REQUIRED SPACEOpen as a rule500mm or more ifthe front and bothsides are open100mm or more 200mm or

6WIRING DIAGRAM5MU-A18NDRS2NLTB2REDORNBLUBRNWHTGRN/YLWC2REDMFBLACK4WHITEORANGE321BLKLNTB1BRNBLUC1REDCMCBLU220-230V~CONNECTINGTO INDOOR UNITPOWER SUPPL

7MU-A30NDSYMBOLC1C2DSARF61LEVMCMFSYMBOLNR61RT62RT63SR61SR62TB1TB2SYMBOLT61X52X6321S252CNAMEDEICERP.C. BOARD2N3NL12VWHTBLUREDBLUWHTWHTT61YLWBLKWHTREDBL

8REFRIGERANT SYSTEM DIAGRAM6MU-A24NDOUTDOOR UNITOutdoorheatexchangerFlared connectionFlared connectionStop valveStop valve(with service port)Capillary

9OutdoorheatexchangerFlared connectionDischargetemperaturethermistorRT62Flared connectionStop valveStop valve(with service port)Capillary tube[3.6 x [