38

Symptom: DXG-18, DXH-18, MGC-18 – ERROR CODE P5

Solution: MULTIPLE SOLUTIONS

Cause: OVER-PHASE CURRENT PROTECTION OF COMPRESSOR

Remarks:

DESCRIPTION:

*AC UNIT IN COOLING/DRY MODE: THE COMPRESSOR STOPS OPERATING WHILE THE INDOOR FAN WILL CONTINUE TO OPERATE.

*AC UNIT IN HEATING MODE: THE COMPLETE UNIT STOPS OPERATION.

REPAIR:

1) THE WIRING OF THE COMPRESSOR IS NOT OK:

SOLUTION 1) PLEASE CHECK IF THE WIRING OF THE COMPRESSOR IS CONNECTED CORRECTLY, OR THE ELECTRIC BOX AND COMPRESSOR HAVE A MISMATCH

2) SOMEONE TURNS OFF THE UNIT AND THEN TURNS THE UNIT BACK ON BEFORE THE COMPRESSOR STOPPED FOR 3 MINUTES:

SOLUTION 2) CHECK IF THE STOP DURATION OF THE COMPRESSOR IS LONGER THAN 3 MINUTES

3) THE VOLTAGE IS TOO LOW:

SOLUTION 3) CHECK IF THE SYSTEM PRESSURE IS TOO LOW. IF YES, PLEASE ADJUST IT

4) OVERLOAD PROTECTION IS ABNORMAL:

SOLUTION 4) CHECK IF THE PROTECTION UNDER OVERLOAD IS OK OR NOT

5) SYSTEM IS ABNORMAL:

SOLUTION 5) CHECK IF THERE IS EXCESSIVE REFRIGERANT, A PIPELINE IS BLOCKED OR THERE IS A DIRTY CONDENSER OR EVAPORATOR

6) DEFECT OF OUTDOOR UNIT CONTROLLER:

SOLUTION 6) REPLACE WITH A NEW CORRESPONDING PCB

7) DEFECT OF THE COMPRESSOR:

SOLUTION 7) REPLACE WITH A NEW CORRESPONDING COMPRESSOR