Thermeau
No Ignition Without Code
Heater fan runs but burners do not light; no error code is displayed.
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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.
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Possible Causes
Marginal Thermeau igniter not reaching proper temperature, Weak spark or poor grounding, Gas valve not opening despite command, Flame sensor detecting false flame
How to Fix / Troubleshooting
Safety first: Turn off gas and power before accessing ignition components.
- Observe ignition attempt: Through the sight glass, confirm whether the igniter glows or sparks when the fan runs.
- Check igniter condition: Replace a visibly worn or cracked Thermeau igniter even if it still glows; it may not be hot enough to light gas.
- Inspect ground connections: Ensure the burner tray and ignition assembly have solid metal-to-metal contact with the chassis for proper grounding.
- Gas valve testing: A technician should verify that the gas valve receives proper voltage during ignition and opens correctly.
- Flame sensor check: Clean or replace the flame sensor if it is falsely indicating flame and preventing gas flow.
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Repair Difficulty
Hard
4/5
Required Part
Thermeau Igniter and Flame Sensor Kit
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