Mitsubishi Electric MSZ-EF18VE2B-E1 Service Manual page 36

Indoor unit
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B Check of remote controller and indoor electronic control P.C. board
Check if the remote controller is exclusive for this air conditioner.
Press OPERATE/STOP (ON/OFF) (MSZ-
EF·VE/VE2)/ STOP/OPERATE (OFF/
ON) (MSZ-EF·VE3) button 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 10-1.4.)
Check if the unit operates with the remote
controller.
Does the unit operate with the remote
controller?
Yes
OK
OBH589G
Replace the batteries. (Refer to 10-1.4.)
No
(Not clear)
Turn ON a radio to AM and press OPERATE/
STOP (ON/OFF) (MSZ-EF·VE/VE2)/ STOP/
OPERATE (OFF/ON) (MSZ-EF·VE3) button
No
on the remote controller. 1
Is noise heard from radio?
Are there any fl uorescent lights of
inverter or rapid-start type within the
range of 1 m?
2
Replace the indoor electronic control P.C.
board. (Including the receiver)
1 Look at the image of the signal transmitting section of
the remote controller through the monitor of a digital
camera or a camera phone. It is normal if the LED of
the signal transmitting section lights up when the OP-
ERATE/STOP (ON/OFF) (MSZ-EF·VE/VE2)/ STOP/OP-
ERATE (OFF/ON) (MSZ-EF·VE3) button on the remote
controller is pressed. However, it may be diffi cult to see
the illuminated LED of the signal transmitting section
with a smartphone camera.
2 If the inverter fl uorescent light is turned on when the
room is cool, the unit may have diffi culty receiving the
signal from the remote controller or may not be able to
operate with it; if the inverter fl uorescent light is turned
on when the room is warm, the unit may be able to
operate with the remote controller.
No
Yes
Yes
No
36
Replace the remote controller.
• Reinstall the unit away from lights.
• Attach a fi lter on receiving part.

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