84
Yes
Yes
Yes
No
Yes
Yes
Yes
No
No
B
B
Check of remote controller and receiver P.C. board
Replace the batteries.(Refer to page 75.)
Turn on a radio to AM and press switch on
the remote controller.
Is noise heard from radio?
Are there any fluorescent lights of
inverter or rapid-start type within
the range of 3.28ft.?
MSH12/15/17
Connect properly.
Replace the receiver P.C. board.
MSH09
Is the connector connecting receiver
P.C. board and indoor electronic con-
trol P.C. board properly connected?
Does the unit receive signal of
ON/OFF with the remote controller
and emit a beep tone?
●
Re-install the unit away from lights.
●
Attach a filter on receiving part.
Switch on the remote controller.
Is LCD display on the remote con-
troller displayed?
Remove the batteries, then set them back
and press the RESET button. Check if the
unit operates with the remote controller.
Yes
Does the unit operate with the
remote controller?
Yes
No
(not clear)
Yes
No
No
No
No
OK
Connect properly.
No
Replace the indoor electronic
control P.C. board.
Replace the auto restart assembly.
Is auto restart assembly properly
connected ?
Does the unit receive signal of
ON/OFF with the remote controller and
emit a beep tone?
OK
Does the unit receive signal of
ON/OFF with the remote controller
and emit a beep tone?
OK
Indoor unit operates by pressing the EMERGENCY OPERATION switch, but does not operate with the remote controller.
w
Check if the remote controller is exclusive for this air conditioner.
w
In case of replacing the receiver P.C. board of MSH09, replace the indoor electronic control P.C. board with it because they are unified.
Replace the remote controller.
OK
Replace the power monitor, receiver
P.C. board with the indoor electronic
control P.C. board.
OB275--3.qxp 03.12.2 5:19 PM Page 84