Mitsubishi Electronics MSZ-FD25VAS, MSZ-FD35VAS Check of installation of the horizontal vane

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All lamps flash ON and OFF every 0.5-second. Indoor unit and outdoor unit do not operate.

E Check of installation of the horizontal vane

Turn OFF the power supply.

Is the stopper of the horizontal vane

No

 

locked to the indoor unit correctly?

 

Yes

 

To check the continuity of the interlock switch (Fan), measure the resistance of connector 1 - 2 connected to CN1R1 on the indoor electronic control P.C. board.

Relock the stopper of the horizontal vane to the indoor unit. (Refer to 10-1.5.)

Turn ON the power supply.

No

Are all lamps flashing?

OK

Yes

Turn OFF the power supply.

No(∞ )

Is there resistance 0 "?

Yes

Replace the indoor electronic control P.C. board.

Replace the interlock switch(Fan).

PLASMA lamp flashes 2-time.

POWER lamp flashes 1 to 5 times while PLASMA operation failure mode (Refer to 10-2.5) is recalled.

F Check of PLASMA operation

After performing the check, make sure to release the failure mode recall function.

Turn ON the power supply.

Does PLASMA lamp flash

Yes

 

2-time with unit stopping?

 

No

1While pressing both OPERATION SELECT button and

TOO COOL button on the remote controller at the same time, press RESET button.

2First, release RESET button.

And release the other two buttons after all LCD except the set temperature in operation display section of the remote controller is displayed after 3 seconds.

3Press OPERATE/STOP (ON/OFF) button (the set temperature is displayed)

4And press PLASMA button once with the remote controller

headed towards the indoor unit. w1 PLASMA operation is selected.

wThe plasma operation check mode is set.(Refer to 10-2.5.)

High voltage (approx. -4.4 kV) is generated during PLASMA operation.

Pay careful attention and never touch PLASMA ELECTRODE UNIT and the high-voltage lead part (red wire).

Replace the indoor electronic control P.C. board.

PLASMA operation

w1 Regardless of normal or abnormal condition, a short beep is emitted once the signal

is received.

Does PLASMA lamp stay OFF, or continuously

OFF

Normal

blink?

 

 

w2 Turn PLASMA operation OFF and ON again.

Continuously blinking.

(For turning OFF PLASMA operation, refer to 10-2.3.)

 

(If it goes normal without turning OFF and ON, PLASMA lamp doesn't go OFF.)

Replace the PLASMA POWER P.C. board.

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Contents MSZ-FD25VA E1 MSZ-FD25VAS E1 MSZ-FD35VA E1 MSZ-FD35VAS E1 Page Technical Changes Part Names and Functions See control operationIndoor model SpecificationSpecifications and rating conditions of main electric parts Noise Criteria Curves MSZ-FD25VA MSZ-FD25VASUnit mm Outlines and DimensionsWiring Diagram Refrigerant System Diagram Unit mmService Functions Timer Short ModeP.C. Board Modification for Individual Operation J1 J2Operation Remote ControllerAuto Restart Function Microprocessor Control OPERATE/STOPAuto Change Over ··· Auto Mode Operation Cool OperationDRY Operation Heat OperationHorizontal vane Auto Vane OperationOutdoor Unit MXZ series Vertical vane COOL/DRY HeatSee Sensor Area SettingSee Control Operation Daytime Plasma Operation Operation and operating rangeProgram Timer Clean OperationTimer Operation EMERGENCY/TEST Operation Minute Time Delay OperationEmergency Operation switch E.O.SW Troubleshooting Failure Mode Recall Function OFFFlow chart of Plasma operation failure mode recall function Plasma operation checkIndoor unit failure mode table Plasma operation failure mode tableInstruction of Troubleshooting StartTroubleshooting Check Table An abnormality other than above mentioned is detectedPlasma Trouble Criterion of Main Parts Troubleshooting Flow Power lamp flashes 3-time Indoor fan does not operateYes Check of indoor P.C. board and indoor fan motor How to check miswiring and serial signal error Check of installation of the horizontal vane Electromagnetic noise enters into TV sets or radios SW P.C. Board Test Point Diagram and VoltageIndoor electronic control P.C. board CN1 Disassembly Instructions Removing the panel PhotoPower monitor receiver Removing the vertical vane motor unit Photo Removing the nozzle assembly PhotoRemoving the electrical box Photo Removing the horizontal vane motor Photo Removing the indoor fan motor and the line flow fan PhotoSpecifications subject to change without notice
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