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.

• Mazak CNC Alarm Codes — Common Faults and Fixes

  Updated: 16 Sep, 2026

  Mazak CNC alarm codes: servo alarms (1–99), spindle alarms (100–299), servo axis faults (400–499), ATC faults (600+), and PC alarms (500+) with fixes.

• Commercial Refrigeration Error Codes — Master Guide

  Updated: 16 Sep, 2026

  Commercial refrigeration error codes for walk-in coolers, reach-ins, and ice machines: what each code means and how to fix it.

• Scotsman Complete Ice Machine Guide

  Updated: 16 Sep, 2026

  Scotsman ice-machine guide for HC, HID, Prodigy, and Prodigy+ E1-E5 errors, blink codes, long freeze, harvest faults, and water faults.

• Trane Chiller Fault Codes — Complete Troubleshooting Guide

  Updated: 16 Sep, 2026

  Trane chiller fault codes for CGAM, CVHE, RTHD, and Tracer CH530 series. What each alarm means and how to fix it.