46
Measure the voltage between receiver P.C.board connector No.2
(+)
and No.1
when remote controller button is pressed.
Yes
Yes
Check of indoor fan motor
A
Check of remote controller and receiver P.C. board
B
Indoor fan does not operate.
Turn OFF power supply.
Check connector (Fan motor) visually.
Replace the indoor fan motor.
Disconnect lead wires from connector (Fan motor).
Measure resistance between lead wires No.1 and No.4 and then No.3 and No.4 of the fan motor.
Are lead wires connected?
Re-connect the lead
wires.
Is soldered point of the connector
correctly soldered?
Replace the indoor electronic control
P.C. board.
Re-solder 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 con-
troller.
Replace the batteries.(Refer to page 42.)
Turn on 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?
Is the voltage approx. 4V DC ?
Replace the indoor electronic control
P.C. board.
Replace the receiver P.C. board.
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 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 0V DC)
No
OB267--2.qxp 01.12.19 3:00 PM Page 46
