15 May 65

Symptom: DXF-19, DXH-19, MGC-19 – ERROR CODE E0/F4

Solution: MULTIPLE SOLUTIONS

Cause: EEPROM PARAMETER ERROR

Remarks:

DESCRIPTION:

INDOOR OR OUTDOOR PCB MAIN CHIP DOES NOT RECEIVE FEEDBACK FROM EEPROM CHIP.

REPAIR:

1) SHUT OFF THE POWER SUPPLY AND TURN IT BACK ON 2 MINUTES LATER:

IS IT STILL DISPLAYING THE ERROR CODE?

NO = THE UNIT IS OPERATING NORMALLY
YES = CHECK 2)

2) IF THE EEPROM CHIP IS WELDED ON THE MAIN PCB, REPLACE THE MAIN PCB DIRECTLY. OTHERWISE, CHECK IF THE EEPROM CHIP IS PLUGGED IN CORRECTLY INTO THE MAIN PCB:

IS IT PLUGGED WELL?

NO = CORRECT THE CONNECTION
YES = CHECK 3)

3) REPLACE THE INDOOR/OUTDOOR MAIN PCB