132
Yes
Check of indoor fan motor
A
Check of remote controller and receiver P.C. board
B
Indoor fan does not operate.
Repair the indoor fan motor.
Disconnect lead wires from connector CN211 on indoor electronic control P.C. board.
Measure resistance between lead wires No.1 and No.3 and then No.2 and No.3.
Are lead wires connected?
Reconnect the lead wires.
Is soldered point normal?
Replace the indoor electronic con-
trol P.C. board.
Resolder it.
Is resistance 0 (short circuit) or
∞
(open circuit)?
Indoor unit operates by pressing the EMERGENCY OPERATION switch, but does not operate with the remote controller.
Replace the batteries.(See page 122.)
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 1m?
Replace the remote controller.
• Re-install the unit away from lights.
• Attach a filter on receiving part.
Yes ( 0 or
∞
)
No
(others)
Yes
No
Yes
No
Switch on the remote controller.
Is LCD display on the remote con-
troller visible?
Remove batteries and then set them back.
Check if the unit operates with the remote
controller.
Yes
Does the unit operate with the
remote controller?
Yes
OK
No
(not clear)
Yes
No
No
No
Turn OFF the power supply.
Check connector CN211 visually.
w
Check the remote controller is exclusive for this air conditioner.
w
Replace the receiver P.C. board together with the indoor control P.C. board.
Replace the indoor electronic control P.C.
board with receiver.