8. Troubleshooting
LED status Cause
Operation indicator, Timer indicator, Defrosting
indicator(Fan indicator, for cooling only type), Auto
indicator flicker at 5Hz
Four times current protection (PRCUR1) 5Hz
Time indicator flickers at 5Hz The room temperature sensor o is open or short
Operation indicator flickers at 5Hz
The evaporator temperature sensor is open or
short
Defrosting indicator flickers at 5Hz
The condenser temperature sensor is open or
short
Defrosting indicator, Auto indicator flicker at 5Hz
Outdoor unit protects (Outdoor temp, sensor,
phase order etc)
Auto indicator flicker at 5Hz EEPROM Communication error
9. Electronic function
9.1 Fan only mode
Fan speed is high/mid/low/ Auto
9.2 Cooling mode
The 4-way valve is closed at cooling mode.
The action of the compressor and the outdoor fan:
T: Room temp.
Ts: Setting temp.
Condition Compressor Outdoor fan
T> Ts+1 On On Temp. up
T<Ts+1 Off Off
T> Ts On On Temp. down
T<Ts Off Off
Auto fan
Condition(T=Indoor Temp.-Setting Temp.) Indoor fan speed
T<1 Low
1<T<4 Med.
Temp. up
T>5 High
T> 4 High
1<T<4 Med.
Temp. down
T<1 Low
Anti-freezing control to indoor evaporator
Condition
Temp. Time
Compressor Outdoor fan
T> TE6 On On Temp. up
T< TE6 >4 Minutes Off Off
T> TE5 On On Temp. down
T< TE5 >4 Minutes Off Off
Condenser high temp. protection( only for heat pump)
Temp. Condition Compressor
T> TE10 Off Temp. up
T< TE10 On
T> TE11 Off Temp. down
T< TE11 On
11
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