35

Symptom: DXG-18, DXH-18, MGC-18 – ERROR CODE F9

Solution: MULTIPLE SOLUTIONS

Cause: DECREASED FREQUENCY DUE TO HIGH AIR DISCHARGE

Remarks:

DESCRIPTION:

ALL SYSTEMS OPERATE NORMALLY, WHILE THE OPERATION FREQUENCY FOR THE COMPRESSOR IS DECREASED.

REPAIR:

1) THE EVAPORATOR AND CONDENSER ARE DIRTY:

SOLUTIONS 1) CHECK IF THE EVAPORATOR AND CONDENSER ARE DIRTY OR NOT. IF YES, PLEASE CLEAN IT

2) THE SYSTEM PRESSURE IS ABNORMAL OR THE REFRIGERANT IS EXCESSIVE:

SOLUTION 2) CHECK IF THE SYSTEM PRESSURE IS NORMAL OR NOT, AND CHECK THE REFRIGERANT LEVEL. IF YES, PLEASE ADJUST IT

3) THE OUTDOOR TEMPERATURE SENSOR IS BROKEN:

SOLUTION 3) CHECK IF THE TEMPERATURE SENSOR OF OUTDOOR UNIT IS OK OR NOT. IF THE SENSOR IS BROKEN, PLEASE REPLACE IT

4) THE OUTDOOR PCB IS BROKEN:

SOLUTION 4) REPLACE WITH A NEW CORRESPONDING OUTDOOR UNIT PCB

5) THE COMPRESSOR IS BROKEN:

SOLUTION 5) REPLACE WITH A NEW CORRESPONDING COMPRESSOR