HVAC, Appliance, CNC, and VFD Error Code Repair Guides

Browse repair guides for HVAC, appliances, refrigeration, CNC alarms, VFD faults, generators, boilers, water heaters, and commercial equipment.

• ABB ACS355 Fault 3130 - Input Phase Loss Fix

  Updated: 16 Sep, 2026

  ABB ACS355 fault 3130 means input phase loss. Check L1-L2-L3 voltage balance, fuses, contactors, terminals, DC bus ripple, and parameter 30.17.

• ABB ACS550 AF10 Fault - Heatsink Overtemperature

  Updated: 16 Sep, 2026

  ABB ACS550 AF10 means heatsink overtemperature. Check cooling fans, blocked fins, enclosure airflow, ambient heat, load current, and frame-size fan parts.

• ABB ACS550 F0001 Fault - Overcurrent Trip Diagnosis

  Updated: 16 Sep, 2026

  ABB ACS550 F0001 means output overcurrent. Check motor cable shorts, ramp time, winding insulation, mechanical jams, sub-codes, and current readings.

• ABB ACS580 Fault 2330 - Earth Leakage Ground Fault

  Updated: 16 Sep, 2026

  ABB ACS580 fault 2330 means earth leakage or ground fault. Check motor moisture, VFD cable damage, megger results, junction box contamination, and filters.