Mitsubishi Electric MSZ-GS06NA - U1 Service Manual page 45

Check if the remote controller is exclusive for this air conditioner.
MSZ-GS30/36NA MSZ-GS30/36NA2
MSY-GS30/36NA MSY-GS30/36NA2
Switch ON the remote controller.
Is LCD display on the remote controller
visible?
Yes
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 remote
controller?
Yes
OK
OBH874A
Replace the batteries. (Refer to 9-1.4.)
No
(Not clear)
Turn ON a radio to AM and press switch
ON the remote controller.
No
Is noise heard from radio?
Yes
Are there any fluorescent lights of
inverter or rapid-start type within the
range of 3.28 ft.?
No
Measure the voltage between receiver P.C. board
connector CN301 No.2(+) and No.3(-) when the
remote controller button is pressed.
Is the voltage approximately 4 V DC?
No (5 or 0 V DC)
Replace the receiver P.C. board.
No
Yes
Yes
45
Replace the remote controller.
• Reinstall the unit away from lights.
• Attach a filter on receiving part.
Replace the remote controller.