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.

• York 7 Flashes Error Code — Ignition Lockout Fix

  1 Apr, 2024

  York 7 flashes means ignition lockout after 3 failed attempts. This guide covers diagnosis and fixes for the York furnace 7-flash ignition lockout fault.

• York 4 Flashes Error Code — Open Limit Device Fix

  31 Mar, 2024

  York 4 flashes means the high limit switch opened due to overheating. This guide covers every cause and fix for the York furnace 4-flash open limit fault.

• Rheem Furnace 6 Flashes - Rollout Switch Open Fix

  30 Mar, 2024

  Rheem furnace 6 flashes means a rollout switch trip. Check vent blockage, inducer draft, burner flame, gas pressure, and heat-exchanger safety.

• Trane 7 Flashes Error Code — Gas Valve Circuit Fault Fix

  26 Mar, 2024

  Trane 7 flashes means a gas valve circuit fault or ignition lockout after multiple attempts. This guide covers diagnosis and fixes for Trane furnace Code 7.