49

Symptom: DXG-18, DXH-18, MGC-18 – ERROR CODE U1

Solution: MULTIPLE SOLUTIONS

Cause: MALFUNCTION OF PHASE CURRENT DETECTION CIRCUIT FOR 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) WIRING DEFECT FOR COMPRESSOR:

SOLUTION 1) CHECK IF THE COMPRESSOR CONNECTION IS OK OR NOT. IF NOT, PLEASE REPAIR THE WIRING

2) OUTDOOR PCB IS MALFUNCTIONING:

SOLUTION 2) REPLACE IT WITH A NEW CORRESPONDING PCB