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Check the following before calling for servicing.
Symptom Check
Operation in HEAT/COOL mode is not working
effi ciently.
• Set the temperature correctly.
• Close all doors and windows.
• Clean or replace the fi lters.
• Clear any obstruction at the air inlet and air outlet
vents.
Noisy during operation. • Check if the unit has been installed at an incline.
• Close the front panel properly.
Remote control does not work.
(Display is dim or transmission signal is
weak.)
• Insert the batteries correctly.
• Replace weak batteries.
The unit does not work. • Check if the circuit breaker is tripped.
• Check if timers have been set.
The unit does not receive the signal from the
remote control.
• Make sure the receiver is not obstructed.
• Certain fl uorescent lights may interfere with the signal
transmitter. Consult an authorised dealer.
The nanoe™X indicator at the indoor unit is
not ON when nanoe™X is activated.
• Use the remote control to retrieve the error code and
consult an authorised dealer.
TroubleshootingEnglish
ACXF55-31442_SS1221-2_EN.indd 19ACXF55-31442_SS1221-2_EN.indd 19 29/11/2021 5:01:37 PM29/11/2021 5:01:37 PM
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