OM_1123950201_EN-Book.indd 35 11/6/2562 BE 16:23
TROUBLES AND CAUSES
For contents of the outdoor unit, combinations, etc., refer to the owner’s manual supplied with the outdoor
unit.
CAUTION
If any of the following conditions occur, stop the air conditioner immediately, set to off the main power
switch and contact the dealer:
Switch operation are erratic.
The main power fuse often blows out, or the circuit breaker is often activated.
Foreign matter or water has fallen inside the air conditioner.
Any other unusual condition is observed.
Abnormal display appears on the remote controller display while using wired remote controller.
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The power main switch is turned off. (Indoor)
The circuit breaker is activated to cut off the power supply.
The main power fuse has blown out.
Stoppage of electric current.
The batteries in the remote controller are exhausted.
ON TIMER is set.
Signal is sent to the follower indoor unit with the remote controller.
(see page 16 )
Operation of the indoor unit is limited by the wired remote controller
that is controlling some other system. (When signal is transmitted,
warning sound (5 beeps) will be heard.)
Disagreement in operation mode occurred. (When the operation
mode disagrees, the “ OPERATION” lamp lights up, and the
“
TIMER” and “ Preheat/Defrost” lamps blink alternately with
an alarm sound.) (see page 4 )
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Doors or windows are opened.
The air filter is clogged with dust.
The louver is not at the correct position.
The fan speed is set to low.
The air conditioner is set in the QUIET or
DRY mode.
The set temperature is too high. (In cooling operation)
The set temperature is too low. (In heating operation)
(Only when the air is not cooled even during cooling operation)
When another indoor unit in the same system is heating.
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