Mitsubishi Electric MU-18NV Manual de servicio

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

10Once the operation mode are set, the same operation modecan be repeated by simply turning theOPERATE/STOP(ON/OFF) button ON.Indoor unit receives the

11ModeCOOL mode of"I FEEL CONTROL"DRY mode of"I FEEL CONTROL"Initial room temperature Initial set temperature26: or more25: to 2

12CompressorOutdoor fan OFFON(continuously at set speed)Indoor fan ONONOFF—DRY mode of “I FEEL CONTROL”—The system for dry operation uses the same ref

138-2. COOL ( ) OPERATION(1) Press OPERATE/STOP(ON/OFF) button.Operation Indicator lamp of the indoor unitturns on with a beep tone.(2) Select COOL mo

14(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

152. CancelTimer setting can be cancelled with the TIMER CONTROL buttons. (“ ” or “ ”)To cancel the ON timer, press the “ ” button.To cancel the OFF t

SERVICE FUNCTIONS1699-2. P.C. BOARD MODIFICATION FOR INDIVIDUAL OPERATIONA maximum of 4 indoor units with wireless remote controllers can be used in a

179-3. AUTO RESTART FUNCTIONWhen the indoor unit is controlled with the remote controller, the operation mode, set temperature, and the fan speed arem

1810 TROUBLESHOOTING10-1. Cautions on troubleshooting1. Before troubleshooting, check the following:1) Check the power supply voltage.2) Check the ind

1910-2. Instruction of troubleshootingIndoor unitoperates. Outdoorunit doesn’tOutdoor unitoperates inonly TestRunoperation.Outdoor unitdoesn’toperate

2TECHNICAL CHANGESMS-18NV - ➔MS-18NV -1. Indoor electronic control P.C. board has changed.MU-18NV - ➔MU-18NV -1. Compressor has changed.(NH-33VMDT

20Measure the resistance between the terminals with a tester.(Coil wiring temperature –10°C ~ 40°C)Measure the resistance between the terminals with a

21Replace the receiver P.C. board.Replace the remote controller.Replace the batteries.(See page 18.)Switch on the remote controller.Repair the indoor

22Check thecontinuity ofindoor andoutdoor unitReplace the indoor electroniccontrol P.C. board.Check of indoor electronic control P.C. boardCThe unit d

23TEST POINT DIAGRAM AND VOLTAGEMS-18NV -Indoor electronic control P.C. boardE4}}}}Fan motor power supplyFuse 250V AC 3.15APower supply input220-240V

24DISASSEMBLY INSTRUCTIONS11(1)(2)1Slide the sleeve.2Pull the terminal while pushing the locking lever.1Hold the sleeve, and pull out the term

25OPERATING PROCEDURE PHOTOSPhoto 4Photo 5Heat exchangerscrewCatchBearing supportscrewsHeat exchangerIndoor fan motorLine flow fanScrews of motor band

26OPERATING 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

27PHOTOS3. Removing the outdoor fan motor(1) Remove the cabinet. (Refer to 1)(2) Disconnect the connector remove the hooked lead wirefrom the fan moto

28PARTS LIST12MS-18NV - (WH)12-1. INDOOR UNITSTRUCTURAL PARTSE4E02 138 000E02 138 010E02 143 234E02 141 100E02 141 970E02 143 067E02 171 0071234567FR

29MS-18NV - (WH)12-3. INDOOR UNIT FUNCTIONAL PARTSAND ELECTRICAL PARTSE4E02 143 235E02 143 040E02 141 702E02 141 300E02 001 505E02 138 395E02 443 452

3TEMPERATURE buttonsSignal transmitting sectionOperation display sectionOPERATE /STOP(ON /OFF)buttonOPERATION SELECT buttonFAN SPEED CONTROL buttonSLE

30Symbolin WiringDiagramQ'ty/unitRemarksPart No.NO.Part NameMU-18NV- E4E02 141 232E02 141 521E02 141 245E02 217 630E02 140 515E02 217 900E02 217

31OPTIONAL PARTS13Part No.ModelMAC-1100FTMS-18NV -E4Part No.ModelMAC-1600DFMS-18NV -E4Deodorizing filter (Gray sponge type)Air cleaning filter (White

HEAD OFFICE MITSUBISHI DENKI BLDG.MARUNOUCHI TOKYO100-8310 TELEX J24532 CABLE MELCO TOKYOCCCopyright 1999 MITSUBISHI ELECTRIC ENGINEERING CO.,LTDIssue

4NOTE:Test conditionsCooling : Indoor DB27: / WB19:Outdoor DB35: / WB24:SPECIFICATION3CapacityElectrical dataCompressorIndoorfan motorOutdoorfan mot

5OUTLINES AND DIMENSIONS4MS-18NV -E4MU-18NV -E4OUTDOOR UNITINDOOR UNIT3 297450450352438254206040150 648 217519099519077550320101517.5160564holes 11o

6WIRING DIAGRAM5MU-18NV -E4MODEL WIRING DIAGRAMOUTDOOR UNITNOTE:1. Use copper conductors only.(For field wiring)2. “w”show the terminals with a lock

7REFRIGERANT SYSTEM DIAGRAM6MS-18NV -E4MU-18NV -E4INDOOR UNITOUTDOOR UNITIndoorheatexchangerRoom temperaturethermistorRT11Refrigerant pipe [15.88(Op

8PERFORMANCE CURVESWet and dry-bulb thermometersDry-bulb thermometersThe standard data contained in these specifications apply only to the operation o

9MS-18NV - E411Both indoor and outdoor unit are under the same temperature/humidity condition.OUTDOOR LOW PRESSURE AND OUTDOOR UNIT CURRENTCOOL operat