16 May 103

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

Solution: NORMAL PROTECTION

Cause: LIMITING/REDUCING FREQUENCY FOR ANTI-FROST PROTECTION

Remarks:

DESCRIPTION:

WHENEVER THE INDOOR UNIT COIL TEMPERATURE IS TOO LOW (FROST).

WHEN THE COIL TEMPERATURE REACHES TO THE POINT WHERE FREQUENCY LIMITATION/REDUCTION IS NEEDED, IT WILL ACTIVATE THE FU PROTECTION.

REPAIR:

1) THIS IS A NORMAL PROTECTION