39
Troubleshooting
Check the following before calling for servicing.
Symptom Check
Operation in HEAT (
*2
 Heatpump model) / 
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™ TECHNOLOGY indicator at 
the indoor unit is not ON when nanoe™ 
TECHNOLOGY is activated. 
• Use the remote control to retrieve the error code and 
consult an authorised dealer.
English