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Troubleshooting
Error Code Diagnosis (Applicable for QS series)
Diagnosis Step
1. Hold down ON TIMER CANCEL button or OFF TIMER CANCEL button for 5 seconds, a “ ” indication
flashes on the temperature display section.
2. Press TIMER CANCEL repeatedly until indoor buzzer produces a long beep. This indicates the error
code, refers to Error Codes table and is displayed on the temperature display section.
3. A short beep or two consecutive beeps indicate non-corresponding error codes.
4. To cancel the error code display, hold down ON TIMER CANCEL button or OFF TIMER CANCEL button
for 5 seconds. Alternatively, the code display will cancel itself if the button is not pressed for 1 minute.
Error Code Diagnosis by Unit Last State Memory
1. Remove battery from remote controller.
2. Replace battery again into remote controller.
3. Press Mode & ON/OFF buttons together.
4. Press Mode button to 5:00.
5. Press ON/OFF once.
6. Repeat the fault diagnosis steps by wireless handset.
Error Codes
MEANING
A1
HARDWARE ERROR ( TACT SWITCH PIN SHORT)
A6
INDOOR FAN MOTOR ABNORMAL
C4
INDOOR HEAT EXCHANGER THERMISTOR SHORT/OPEN
C9
INDOOR ROOM THERMISTOR SHORT/OPEN
F6
COMPRESSOR OVERHEAT
U0
INSUFFICIENT GAS
TURBO
QUIET
SLEEP
MODE
TIMER
CANCEL
ON
OFF
SWING
FAN
CANCEL
CLOCK
ON TIMER CANCEL
OFF TIMER CANCEL
