03 Dec 100 Posted at 00:30h in Technical Soporte by 0 Likes Symptom: MGTC-20, DXTC-20, DXTH-20 – ERROR CODE FF Solution: NORMAL PROTECTION Cause: LIMITING/REDUCING FREQUENCY FOR IPM MODULE TEMPERATURE PROTECTION Remarks: DESCRIPTION: WHENEVER THE IPM HAS A HIGH TEMPERATURE. WHEN THE IPM TEMPERATURE REACHES TO THE POINT WHERE FREQUENCY LIMITATION/REDUCTION IS NEEDED, IT WILL ACTIVATE THE FF PROTECTION. REPAIR: 1) THIS IS A NORMAL PROTECTION