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14
Troubleshooting
Check out the following points before requesting service.
If the trouble persists even after performing the checks recommended above, shut down the air conditioner’s operation, set the
local power switch to OFF, and contact your dealer with the model number and trouble symptoms. You must NOT attempt to
make repairs yourself due to the dangers involved. If one or more of the indication lamps is blinking, give this information to the
dealer as well.
Trouble Possible Cause Remedy
Check again.
The air conditioner
does not run even
when the ON/OFF
operation switch has
been set to ON.
Is the air conditioner in the shutdown mode or
was the switch operated after a power failure?
Press the wireless remote control unit’s
ON/OFF operation button again.
How about the local power switch? If it was off, set it now to on.
Have any of the fuses blown? If a fuse has blown, contact your dealer.
Is the ON timer operation mode established? Clear the timer operation.
If the signal receiver’s NORMAL/ALL OFF
switch set to “ALL OFF”?
If it is, set it to the “NORMAL” position and
cancel the operation.
Have the wireless remote control unit’s
batteries run down?
If they have, replace them with new ones.
Do the indication lamps show a cooling/heating
mismatch or is the auto cooling/heating
function not available?
Change the operation mode.
Auto cooling/heating or heating appears on the display even though the air
conditioner is a cooling-only model.
Change the setting of the wireless remote
control unit’s slide switch. (See page 9)
Trouble Possible Cause
Contact your dealer.
(An indicator lamp is blinking.) • Some kind of trouble has occurred in communication between the signal
receiver and indoor unit. Alternatively, the wrong address has been set
when a wired remote control unit is used.
• Some kind of trouble has occurred in communication between the indoor
unit and outdoor unit.
• The indoor unit’s protection device has been activated. Alternatively, the
auto flap connector of the ceiling panel has been disconnected.
• The outdoor unit’s protection device has been activated.
• Something is wrong with the temperature sensor.
• The outdoor unit’s compressor has been protected.
• A trial run is underway. Set the trial run switch to OFF.
Operation
Timer
Preparing for
operation
Operation
Timer
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operation
Operation
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Operation
Timer
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Operation
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Operation
Timer
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Operation
Timer
Preparing for
operation
OI-837-14-EG