121

Symptom: DXG-18, DXH-18, MGC-18 – ERROR CODE U2

Solution: MULTIPLE SOLUTIONS

Cause: LOST PHASE PROTECTION OF COMPRESSOR

Remarks:

DESCRIPTION:

*AC UNIT IN COOLING MODE: THE COMPRESSOR AND OUTDOOR FAN STOP WHILE THE INDOOR FAN CONTINUES TO OPERATE.

*AC UNIT IN HEATING MODE: ALL LOADS STOP OPERATION.

REPAIR:

1) CHECK IF THE MAIN BOARD OF OUTDOOR UNIT IS DAMAGED. IF YES, PLEASE REPLACE OUTDOOR UNIT PCB

2) CHECK IF THE COMPRESSOR IS DAMAGED. IF YES, PLEASE REPLACE THE COMPRESSOR

3) CHECK IF THE CONNECTION WIRE OF COMPRESSOR IS WELL CONNECTED OR NOT. IF NOT, PLEASE FIX CONNECTION OF THE CONNECTION WIRE