Full Product Manual

OUTDOOR UNIT
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Low pressure alarm
Error
OK
Check the gas side of the system
Lack of refrigerant
Low Pressure alarm
OK
Heat exchanger is in poor condition
Check the PCB and
pressure swich
Replace PCB or switch
OK
Error
Repair the heat exchanger
Repair the leakage & charge refrigerant
Error
Remove the dirty and open the valve
Error
High pressure alarm
Error
OK
Check the liquid side of the system
Heat exchanger of
outdoor is bad
High Pressure alarm
OK
There is N
2
or air in the system
Two much refrigerant in the system Discharge some refrigerant
OK
Error
Discharge the refrigerant & vacuum,
recharge the refrigerant
Check and repair one by one
Error
Remove the dirty and open the valve
Error
Check the switch and PCB
Error
Replace the switch and PCB
OK