Mitsubishi Electric MSZ-HJ50VA Manuel de service

CONTENTS1. TECHNICAL CHANGES ··································· 32. PART NAMES AND FUNCTIONS ····················· 43. SPECIFICATION ················

10NOTE:• The operation settings are memorized when 10 seconds have passed after the indoor unit was operated with the remote controller.• If main powe

11NOTE : Last setting will be stored after the unit is turned OFF with the remote controller. Indoor unit receives the signal of the remote controller

129-2. DRY ( ) OPERATION(1) Press OPERATE/STOP (ON/OFF) button. OPERATION INDICATOR lamp of the indoor unit turns on with a beep tone.(2) Select DRY

13(5) STOP (operation OFF) and ON TIMER standbyIn the following cases, the horizontal vane returns to the closed position.(a) When OPERATE/STOP (ON/OF

14EMERGENCY OPERATION switch9-6. EMERGENCY/TEST OPERATIONIn case of test run operation or emergency operation, use EMERGENCY OPERATION switch on the r

153. Troubleshooting procedure1) Check if the OPERATION INDICATOR lamp on the indoor unit is flashing ON and OFF to indicate an abnormality. To make

1610-2. FAILURE MODE RECALL FUNCTIONOutline of the functionThis air conditioner can memorize the abnormal condition which has occurred once.Even thoug

172. Indoor unit failure mode tableUpper lamp of OP-ERATION INDICA-TOR lampAbnormal point (Failure mode) Condition Remedy Not lighted Normal — —1-ti

1810-3. INSTRUCTION OF TROUBLESHOOTINGIndoor unit oper-ates.Outdoor unit does not operate.If blinking of OPERATION INDI-CATOR lamp cannot be checked,

1910-4. TROUBLESHOOTING CHECK TABLEBefore taking measures, make sure that the symptom reappears for accurate troubleshooting.When the indoor unit has

2<Preparation before the repair service> Prepare the proper tools. Prepare the proper protectors. Provide adequate ventilation. After stoppi

2010-5. TROUBLE CRITERION OF MAIN PARTSMSZ-HJ25VA MSZ-HJ35VA MSZ-HJ50VAPart name Check method and criterion Figure Room temperaturethermistor (RT11

2110-6. TROUBLESHOOTING FLOW A Check of indoor fan motor The indoor fan motor error has occurred, and the indoor fan does not operate.Turn OFF the po

22 B Check of remote controller and indoor electronic control P.C. board Check if the remote controller is exclusive for this air conditioner.Does th

23 C Check of indoor P.C. board and indoor fan motorTurn OFF the power supply.Remove indoor fan motor connector CN211 from indoor power P.C. board an

24 D How to check miswiring and serial signal errorAReinstall ei-ther the unit or the light away from each other.Attach a fi lter on remote control r

25 E Electromagnetic noise enters into TV sets or radiosYesIs the unit earthed?NoEarth the unit.YesIs the distance between the antennas and the indoo

26Room temperature thermistor (RT11)Indoor coil thermistor (RT12, RT13)Temperature (°C)Resistance (kΩ)Fuse (F11)T3.15AL250VVaristor (NR11)Connector to

OPERATING PROCEDURE PHOTOS1. Removing the panel(1) Remove the screw caps on the panel and remove the screws of the panel.(2) Pull the panel slightly t

OPERATING PROCEDURE PHOTOS2. Removing the indoor power P.C. board and the electrical box(1) Remove the panel. (Refer to 1.) Remove the right corner bo

OPERATING PROCEDURE PHOTOS3. Removing the indoor electronic control P.C. board(1) Remove the panel. (Refer to 1.) Remove the right corner box.(2) Disc

31TECHNICAL CHANGESMSZ-HJ25VA -E1MSZ-HJ35VA -E1MSZ-HJ50VA -E1 1. New modelOBH647A

OPERATING PROCEDURE PHOTOS5. Removing the indoor fan motor, the indoor coil thermistor and the line flow fan(1) Remove the panel. (Refer to 1.) Remove

31Fixing the indoor coil thermisor There are 2 forms of parts for fixing the indoor coil thermistor.NOTE: Take care to avoid loss and accidental fall

© Copyright 2012 MITSUBISHI ELECTRIC CORPORATIONDistributed in Mar. 2013. No. OBH647 REVISED EDITION-ADistributed in Dec. 2012. No. OBH647Made in Ja

4Operation indicator lampRemote control receiving sectionEmergencyoperation switch Horizontal vaneAir inletAir filterFront panelAir outletHeat exchange

53SPECIFICATIONIndoor model MSZ-HJ25VA MSZ-HJ35VA MSZ-HJ50VAPower supply Single phase 230 V, 50 HzBreaker Capacity A1012Electrical dataPower input 1

690807060504030201063 125 250 500 1000 2000 4000 8000NC-60NC-50NC-40NC-30NC-20NC-70OCTAVE BAND SOUND PRESSURE LEVEL, dB re 0.0002 MICRO BARBAND CENTER

7MSZ-HJ25VA MSZ-HJ35VA MSZ-HJ50VAUnit : mmMSZ-HJ25VA MSZ-HJ35VA MSZ-HJ50VA5OUTLINES AND DIMENSIONS6WIRING DIAGRAM23256941799785 729012063049578042

8MSZ-HJ25VA MSZ-HJ35VAIndoorheatexchangerFlared connectionRoom temperaturethermistorRT11Flared connectionRefrigerant flow in coolingRefrigerant flow

98-2. P.C. BOARD MODIFICATION FOR INDIVIDUAL OPERATIONA maximum of 4 indoor units with wireless remote controllers can be used in a room.In this case,