Push the [ ] button.
Does the transmission
indicator blink?
YES
YES
YES
YES
YES
YES
YES
Is there direct
sunlight on the
receptor of the air
conditioner?
Avoid direct
sunlight.
Is there any
thyristor
fluorescent light
nearly?
Keep the air
conditioner away
from thyristor
fluorescent light.
NO
NO
NO
NO
NO
NO
NO
NO
Is operation possible
when setting the
temporary switch of the
air conditioner main unit
to “TEST RUN” or
“TEMPORARY AUTO”?
Can any signal tone
be heard in a transistor
radio when transmitting
within 5 cm distance
from the radio?
P.C. board is failure.
Replace
P.C. board
Is operation
possible when the
transmitter is moved
nearer to the infrared
signal receiver of the
air conditioner?
Battery life
Replace the
batteries
Dose the
transmission
indicator light?
Is there any
beep and
operation?
Normal
Remote control
is failure.
Replace remote
control.
Push the [ ]
button
YES
There is no beep from the indoor unit
The OPERATION lamp of the
air conditioner main unit does not light
Press RESET button
on remote control with
tip of pencil
(
5
) Troubleshooting for remote controller
<Primary check>
Check that A or B selected on the main unit is matched with A or B selected on the remote controller.
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