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Symptom
Cause
Action
The air
conditioner does
not operate
although the
power is turned
on.
Power failure or after power failure
Press the power ON/OFF button on the remote controller.
The operation (power) button is turned off.
• If the breaker is turned off, turn the power on.
• If the breaker has been tripped, consult your dealer
without turning it on.
Fuse blow out.
Contact your dealer.
Poor cooling
or heating
performance
The air intake or air outlet of indoor and
outdoor units is clogged with dust.
Remove the dust.
The fan speed switch is set to “Low”.*
Change to “Medium” or “High”.*
Improper temperature settings
See “Tips for Energy Saving”. (P.6)
The room is exposed to direct sunlight in
cooling mode.
Doors or windows are open.
The air filter is clogged.
See “Maintenance”. (P.8)
Too many heat sources in the room in
cooling mode.
Use minimum heat sources and in a short time.
Too many people in the room in cooling
mode.
Lower the temperature setting or change to “Medium” or
“High”.*
* Regarding the fan speed control display on the remote controller, see page 15.
z
z
If the P08 alarm and inspection mark are displayed on the remote controller and the fan automatically operates and does not
stop even when you press ON/OFF operation button on remote controller, R32 refrigerant leakage detection sensor connected
to the indoor unit has detected refrigerant leakage. In such a case, do not turn off the earth leakage circuit breaker, ventilate the
room, and contact the service dealer immediately.
If your air conditioner does not work properly even after checking each item of
“Before Requesting Services” and “Troubleshooting”
z
z
Stop the operation immediately and turn the power off. Then contact your dealer and report the serial number and symptom.
You also report if the inspection mark and the letters E, F, H, L, P in combination with numbers appear on the LCD of the
remote controller.
z
z
Never repair the air conditioner by yourself since it is very dangerous for you to do so.
Before Requesting Services
Troubleshooting
Symptom
Cause / Action
Outdoor unit
No operation
(When the power is turned on immediately /
When operation is stopped and resumed
immediately)
• Operation is not activated for the first approx. 3 minutes
because the compressor protection circuit is activated.
Noise occurs during heating operation.
• Defrost operation is in process.
Steam comes out during heating operation.
The fan continues to rotate even after the
operation is stopped using the remote
controller.
• This is for smooth operation.
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