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 436 — Causes & Fix

  22 Apr, 2026

  Troubleshoot Fanuc Alarm 436 on CNC equipment with checks for servo load, spindle drives, parameters, wiring, and when to call a controls tech.

• Follett Horizon Elite Error Code Guide — Causes & Fixes

  22 Apr, 2026

  Follett Horizon Elite ice machine error codes: what each code means and how to fix it.

• Frigidaire Mini Split E1 Error Code — Communication Error Fix

  22 Apr, 2026

  Frigidaire Mini Split E1 Error Code - Communication Error Fix: likely causes, checks, and repair decisions before replacing parts.

• Goodman Furnace E1 Error Code — Causes & Fix

  22 Apr, 2026

  Diagnose Goodman Furnace E1 Error Code - Causes & Fix: likely causes to check, measurements to verify, and repair decisions before parts replacement.