16 May 95

Symptom: MGTC-20, DXTC-20, DXTH-20 – ERROR CODE F9

Solution: REPLACE THE OUTDOOR UNIT PCB

Cause: IPM MODULE TEMPERATURE TEST CIRCUIT FAILURE

Remarks:

DESCRIPTION:

THE TEMPERATURE TEST CIRCUIT OF THE IPM MODULE IS ABNORMAL, IT CANNOT TEST THE TEMPERATURE AD VALUE.

REPAIR:

1) PLEASE REPLACE THE OUTDOOR UNIT PCB