DC INVERTER U-MATCH AIR CONDITION MAINTENANCE
108
Malfunction display: E4 Compressor Exhaust High Temperature Protection◆
Abnormal discharge
temperature
Measure if compressor’s discharge
temperature has reached 130
N
Y
Y
System pipeline leaks so complementation is
needed. Please add refrigerant according to the
amount specified on the nameplate
Measure if temperature sensor’s
resistance value is correct
Replace relevant
discharge temperature
sensor
N
Y
Replace the main board
of the outdoor unit.
PH means that D/C input voltage is too high.
The solution:
1.Pls check the voltage between AC-L and N.If the voltage is 185V~264,that's ok.
2.If the voltage is 185V~264,pls change the main-board of out -door unit.
3.If the ERROR still,Pls change the compressor.
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