Toshiba RAS-M22SKV-E Service Manual page 59

(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.
Is receiver
on indoor unit exposed
to direct sunlight?
YES
Avoid direct sunlight.
P.C. board is defective.
Replace P.C. board.
NO
Is there any
thyristor fluorescent
light nearby?
YES
Keep indoor unit
away from thyristor
fluorescent light.
Does indoor unit start
NO
to operate by automatic
restart function?
Is radio sound affected
YES
by remote controller when
a signal is transmitted at distance
of 5 cm from radio?
NOTE : After replacing batteries,
push the RESET button with a tip of a pencil.
Push the START/STOP button.
Is transmission
mark indicated?
Does indoor unit operate
NO NO
when moving remote controller
near receiver or indoor unit?
Batteries are exhausted.
Replace batteries.
YES
NO
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The unit does not beep at all.
Operation lamp on indoor unit
is not indicated.
NO
YES
Push RESET button
on remote controller
with tip of pencil.
YES
Push the
START/STOP button
YES
Is transmission
mark indicated?
Does indoor unit
beep and operate?
YES
NO
Remote controller
is defective.
Normal Replace
operation remote controller.
NO