15
Trouble Shooting
WARNING
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When an abnormality (such as a burning smell) occurs, stop operation and turn the breaker OFF.
Continued operation in an abnormal condition may result in troubles, electric shocks or fire.
Consult the service shop where you bought the air conditioner.
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■
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Do not attempt to repair or modify the air conditioner by yourself.
Incorrect work may result in electric shocks or fire.
Consult the service shop where you bought the air conditioner.
Case
Explanation
The outdoor fan rotates while the air
conditioner is not in operation.
■
After operation is stopped:
•
The outdoor fan continues rotating for another 60 seconds for system protec-
tion.
■
While the air conditioner is not in operation:
•
When the outdoor temperature is very high, the outdoor fan starts
rotating for system protection.
The operation stopped suddenly.
(OPERATION lamp is on)
■
For system protection, the air conditioner may stop operating on a sud-
den large voltage fluctuation.
It automatically resumes operation in about 3 minutes.
“
” is displayed on the remote
controller, and the displayed contents
flash for several seconds when an opera-
tion button is pressed.
When three short “beep” sounds are
issued in the case of wireless remote con-
troller.
•
The air conditioner is controlled by the central equipment.
Flashing of the displayed contents indicates that the remote controller is
invalid for control.
COOL/HEAT cannot be changed over.
•
When the display shows “
”
(CHANGEOVER UNDER CONTROL), it
shows that this is a slave remote controller.
•
When the cool/heat changeover remote
control switch is installed and the display
shows “
” (CHANGEOVER
UNDER CONTROL).
When a long “beep” sound is issued in the
case of wireless remote controller.
•
Refer to page 13.
•
This is because cool/heat changeover is controlled by the cool/heat
changeover remote control switch. Ask your dealer where the remote
control switch is installed.
The liquid crystal of the remote con-
troller shows “
” immediately after
the power supply is turned on.
•
This shows that the remote controller is in normal condition.
This continues for one minute.
The compressor in the outdoor unit does
not stop after a short HEATING operation.
•
This is to prevent oil and refrigerant from remaining in the compressor.
The unit will stop after 5 to 10 minutes.
The inside of an outdoor unit is warm
when the unit has stopped
•
This is because the crankcase heater is warming the compressor even
while the outdoor unit is stopped so that the compressor can start
smoothly.
When the air conditioner has not been
used (the power has been off) for a long
time.
•
For protecting the unit, supply the power for 6 hours at first, then operate
the air conditioner.
Warm air exits the unit even though it is
off.
You can feel hot air coming out of the unit.
•
Multiple units are operating on the same system, so if a unit in another
room is operating, some refrigerant will flow through the stopped units,
too.
Call the service shop immediately.
01_EN_3PN00286-12Z.fm Page 15 Wednesday, September 14, 2005 8:56 PM
