Mitsubishi Electric MSZ-EF42VES Wartungshandbuch

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

108-1. TIMER SHORT MODEFor service, set time can be shortened by short circuit of JPG and JPS on the electronic control P.C. board.The time will be sh

118-3. AUTO RESTART FUNCTIONWhen the indoor unit is controlled with the remote controller, the operation mode, the set temperature, and the fan speed

12WIRELESS REMOTE CONTROLLERMSZ-EF22VEW MSZ-EF25VEW MSZ-EF35VEW MSZ-EF42VEW MSZ-EF50VEWMSZ-EF22VEB MSZ-EF25VEB MSZ-EF35VEB MSZ-EF42VEB MSZ-EF50VEBMSZ-

139-2. 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 mo

14NOTE 2 FOR MULTI SYSTEM AIR CONDITIONER OUTDOOR UNIT: MXZ series Multi system air conditioner can connect two or more indoor units with one outdoo

159-7. TIMER OPERATION1. How to set the time (1) Check that the current time is set correctly.NOTE: Timer operation will not work without setting the

169-8. WEEKLY TIMER OPERATION• A maximum of 4 ON or OFF timers can be set for individual days of the week.• A maximum of 28 ON or OFF timers can be se

17(5) Press button to turn the weekly timer ON. ( lights.)•When the weekly timer is ON, the day of the week whose timer setting is complete, will

1810-1. CAUTIONS ON TROUBLESHOOTING1. Before troubleshooting, check the following1) Check the power supply voltage.2) Check the indoor/outdoor connect

1910-2. FAILURE MODE RECALL FUNCTIONOutline of the functionThis air conditioner can memorize the abnormal condition which has occurred once.Even thoug

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

202. Indoor unit failure mode tableThe left lamp of OPERATION INDI-CATOR lampAbnormal point (Failure mode) Condition RemedyNot lighted Normal — —1-t

2110-3. INSTRUCTION OF TROUBLESHOOTINGIndoor unit oper-ates.Outdoor unit does not operate.If blinking of OPERATION INDI-CATOR lamp cannot be checked,

2210-4. TROUBLESHOOTING CHECK TABLEBefore taking measures, make sure that the symptom reappears for accurate troubleshooting.When the indoor unit has

23OPERATION INDICATOR No. Abnormal point Operation indicator lamp Symptom Condition Remedy 1MXZ type Operation mode settingLeft lamp lights and

24 A Check of indoor fan motor10-6. TROUBLESHOOTING FLOWThe indoor fan motor error has occurred, and the indoor fan does not operate.Turn OFF the po

25 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

26 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 a

27 D How to check miswiring and serial signal errorMUZ-EF TypeTurn OFF inverter-controlled lighting equipment.Turn OFF the power supply and then turn

28Turn OFF inverter-controlled lighting equipment.Turn OFF the power supply and then turn ON again.Press EMERGENCY OPERATION switch.•••AIs serial sign

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

3TECHNICAL CHANGES1MSZ-EF22VEW - E1MSZ-EF25VEW - E1MSZ-EF35VEW - E1MSZ-EF42VEW - E1MSZ-EF50VEW - E1MSZ-EF22VEB - E1MSZ-EF25VEB - E1MSZ-EF35VEB - E1MSZ

30Room temperature thermistor (RT11)Indoor coil thermistor (RT12, RT13)Temperature (°C)Resistance (kΩ)Indoor electronic control P.C. boardIndoor power

31MSZ-EF22VEW MSZ-EF25VEW MSZ-EF35VEW MSZ-EF42VEW MSZ-EF50VEWMSZ-EF22VEB MSZ-EF25VEB MSZ-EF35VEB MSZ-EF42VEB MSZ-EF50VEBMSZ-EF22VES MSZ-EF25VES MSZ-EF

32OPERATING PROCEDURE PHOTOS2. Remove the indoor electrical box(1) Remove the panel (Refer to 1.) and the corner box right.(2) Remove the screw of the

33OPERATING PROCEDURE PHOTOS4. Removing the nozzle assembly(1) Remove the panel (Refer to 1.) and the corner box right.(2) Remove the indoor/outdoor c

34OPERATING PROCEDURE PHOTOS6. Removing the indoor fan motor, the indoor coil thermistor and the line flow fan(1) Remove the panel (Refer to 1.) and t

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HEAD OFFICE: TOKYO BLDG., 2-7-3, MARUNOUCHI, CHIYODA-KU, TOKYO 100-8310, JAPAN© Copyright 2010 MITSUBISHI ELECTRIC CO., LTDDistributed in Mar. 2011.

4ACCESSORIESMSZ-EF22VEW MSZ-EF25VEW MSZ-EF35VEW MSZ-EF42VEW MSZ-EF50VEWMSZ-EF22VEB MSZ-EF25VEB MSZ-EF35VEB MSZ-EF42VEB MSZ-EF50VEBMSZ-EF22VES MSZ-EF25

5Indoor modelMSZ-EF22VEWMSZ-EF22VEBMSZ-EF22VESMSZ-EF25VEWMSZ-EF25VEBMSZ-EF25VESMSZ-EF35VEWMSZ-EF35VEBMSZ-EF35VESMSZ-EF42VEWMSZ-EF42VEBMSZ-EF42VESMSZ-E

6MSZ-EF22VEW MSZ-EF25VEWMSZ-EF22VEB MSZ-EF25VEBMSZ-EF22VES MSZ-EF25VES90807060504030201063 125 250 500 1000 2000 4000 8000NC-60NC-50NC-40NC-30NC-20NC-

7Test conditionsCooling: Dry-bulb temperature 27 °CWet-bulb temperature 19 °CHeating: Dry-bulb temperature 20 °CINDOOR UNITWALLMICROPHONE0.8m1mMSZ-EF4

8Unit: mmMSZ-EF22VEW MSZ-EF25VEW MSZ-EF35VEW MSZ-EF42VEW MSZ-EF50VEWMSZ-EF22VEB MSZ-EF25VEB MSZ-EF35VEB MSZ-EF42VEB MSZ-EF50VEBMSZ-EF22VES MSZ-EF25VES

9MSZ-EF22VEW MSZ-EF25VEW MSZ-EF35VEW MSZ-EF42VEW MSZ-EF50VEWMSZ-EF22VEB MSZ-EF25VEB MSZ-EF35VEB MSZ-EF42VEB MSZ-EF50VEBMSZ-EF22VES MSZ-EF25VES MSZ-EF3