Toshiba RAS-M10YKV-E Service Manual page 58

(5) How to examine whether remote control is good or bad
• Does setting (A/B) of the remote control selection match with that at 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 pressed 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.
Push the START/STOP button.
Does the transmission
indicator of remote
control light?
YES
<Cooling only
model>
Is operation
possible when the
NO
transmitter is moved
nearer to the infrared
signal receiver of the
air conditioner?
YES
Battery life
NO
NO
YES
Replace the
battery.
– 58 –
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 control.
<Heat pump
model>
Take out the batteries
and insert them again.
(rear side of remote
control)
Push the START/
STOP button
Does the transmission
indicator light?
YES
Is there any receiving
sound and operation?
YES
Normal
NO
Remote
control
is failure.