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9-4. How to Check the Remote Control (Including the Indoor PC Board)
NO
YES
After battery replacement,
shortcircuit the metal terminal at
the side of the battery compartment
(all-clear terminal) with a pencil.
Push the START/STOP button.
Does the transmission
indicator flash?
There is no beep from
the indoor unit.
The operation lamp of
the air conditioner main
unit does not light.
Is there direct
sunlight on the
receptor of the
air conditioner?
Avoid direct
sunlight.
Is there any
thyristor
fluorescent light
near by?
Keep the air
conditioner away
from thyristor
fluorescent light.
Is operation
possible when the
transmitter is moved
nearer to the infrared
signal receiver of the
air conditioner?
Battery life
Can any signal tone
be heard in a transistor
radio when transmitting
within 5cm distance
from the radio?
Does the
transmission
indicator light?
Is there any
beep and
operation?
Short-circuit the metal
terminal at the side of the
battery compartment
(all-clear terminal) with a pencil.
(wait about 10 seconds)
PC Board is failure.
Replace
PC board.
Replace the
batteries
Normal
Remote control
is failure.
Replace remote
control.
Note:
NO
YES
NO
YES
NO
YES
NO
YES
NO
YES
NO
YES
NO
YES
Is operation
possible when setting
the temporary switch of the
air conditioner main unit to
"TEST RUN" or
"TEMPORARY AUTO"?
Push the START/
STOP button