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.

• Fanuc Alarm 401 Servo Axis Overload

  11 Mar, 2024

  Fanuc alarm 401 means a servo axis overload. Check binding, lubrication, cutting load, motor thermistors, servo amp current, and parameter settings.

• Mitsubishi Mini Split E6 Error Code Fix

  7 Mar, 2024

  Diagnose Mitsubishi Mini Split E6 Error Code Fix: likely causes to check, measurements to verify, and repair decisions before parts replacement.

• Mitsubishi Mini Split P6 Error Code Fix

  5 Mar, 2024

  Diagnose Mitsubishi Mini Split P6 Error Code Fix: likely causes to check, measurements to verify, and repair decisions before parts replacement.

• Carrier 13 Error Code — Limit Switch Lockout Fix

  3 Mar, 2024

  Carrier error code 13 means limit-switch lockout from overheating. Check airflow, filter restriction, blower speed, limit switch, and heat exchanger risk.