27
Yes
Yes
Check of indoor fan motor
A
Check of receiver P.C. board
B
Inodoor fan does not operate.
Turn OFF power supply.
Check connector CN211 visually.
Repair indoor fan motor.
Disconnect lead wires from connector CN211 on indoor control P.C. board.
Measure resistance between lead wires No.1 and No.4 and then No.3 and No.4.
Are lead wires connected?
Reconnect lead wires
Is soldered point normal?
Replace indoor electronic control
P.C. board.
Resolder it.
Is resistance 0 (short circuit) or
∞
(open circuit)?
Indoor unit operates by pressing the emergency ON/OFF switch, but does not operate with the remote controller.
Replace batteries.(see page 24.)
Turn a radio to AM and press switch on
remote controller.
Is noise heard from radio?
Are there any fluorescent lights of
inverter or rapid-start type within
the range of 1m?
Measure the voltage between receiver board connector No.2
(+)
and No.1
when remote controller button is pressed.
Is the voltage approx. 4V DC?
Replace indoor electronic control
P.C. board.
Replace the receiver
Replace remote controller
●
Re-install the unit away from lights.
●
Attach a filter on receiving part.
Yes ( 0 or
∞
)
No
(others)
Yes
NO
Yes
NO
Check the model name of remote
controller.
Is.LCD display on remote con-
troller visible?
Remove batteries and then set them back.
Check if the unit operates with remote
controller.
Yes
Does the unit operate with remote
controller?
Yes
OK
No
(not clear)
Yes
No
No
No(5V or OV DC)
No
OB188--2.qxp 25/9/97 6:09 PM Page 7
