Heil furnace LED flashes 14 times; furnace may not start or may shut down due to ignition lockout.
Safety Warning
This repair may involve working with high voltage components or water connections. Always unplug the appliance before removing any panels.
If you are not confident in your ability to perform this repair safely, we strongly recommend contacting a professional technician.
Possible Causes
How to Fix / Troubleshooting
Safety: Turn off power and gas before servicing ignition components.
Steps to check:
- Clean burners: Remove burner assembly if accessible. Use a soft brush or compressed air to remove rust and debris from burner ports. Reinstall ensuring proper alignment.
- Inspect ignitor: Check for cracks or white spots on the ignitor. If it glows very dimly or not at all, replacement is recommended.
- Clean flame sensor: Remove and clean the flame sensor rod with fine steel wool to ensure a strong flame signal.
- Reset lockout: Turn off power for 30–60 seconds, then restore and call for heat. Observe the full ignition sequence.
When to call a pro: If ignition still fails after cleaning and visual checks, a technician should measure gas pressure, flame signal microamps, and replace the ignitor, flame sensor, or gas valve as needed.
Repair Difficulty
Required Part
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