Mitsubishi Electronics MSZ-FA25VA, MSZ-FA35VA Check of remote controller and receiver P.C. board

Indoor unit operates by pressing EMERGENCY OPERATION switch, but does not operate with the remote controller.

B Check of remote controller and receiver P.C. board

wCheck if the remote controller is exclusive for this air conditioner.

Switch on the remote controller.

Is LCD display on the the remote	No
controller visible?

(not clear)

Yes

Replace the batteries. (Refer to 9-1.4.)

Remove the batteries, then set them back and press RESET button. (Refer to 9-1.4.) Check if the unit operates with the remote controller.

Does the unit operate with the	No
remote controller?
Yes
OK

Turn on a radio to AM and press switch on the remote controller.

Is noise heard from radio?		No
	Yes
Are there any fluorescent lights of		Yes
inverter or rapid-start type within
the range of 1m?

Replace the remote controller.

●Reinstall the unit away from lights.

●Attach a filter on receiving part.

Replace the indoor electronic control P.C. board.

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