How To Examine Whether Remote Controller Is Good Or Bad - Toshiba RAS-M10UKV-E3 Service Manual

(5) How to examine whether remote controller is good or bad

• Does setting (A/B) of the remote controller selection match with that indoor unit?
Operation
Check Items
Considerable main cause
Measures
Item by symptom
Is there direct
NO
sunlight on the
receptor of the
air conditioner?
YES
Is there any
fluorescent light
Keep the air
conditioner away
Avoid direct from thyristor
sunlight.
fluorescent light.
NO
thyristor
near by?
YES
Is Temporary Cool
operation possible when
NO
keeping the temporary
switch of the air conditioner
main unit pushed for
10 seconds or more?
YES
Can any signal tone
be heard in a transistor
radio when transmitting
within 5cm distance
from the radio?
Replace
P.C. board.
Press the START/STOP button.
Does the transmission
indicator of remote
controller light?
YES
Is operation
possible when the
NO
transmitter is moved
nearer to the infrared
signal receiver of the
air conditioner?
YES
Battery life
NO
YES
Replace the
battery.
– 89 –
There is no beep from
the indoor unit.
The operation lamp of
the air conditioner main
unit does not light.
NO
Short-circuit ACL switch with
a coin or others at rear side
of remote controller.
Push the START/
STOP button
Does the
transmission
indicator light?
YES
Is there any
NO
receiving sound
and operation?
YES
Remote controller
Normal
NO
is failure.