Alpha
Burners Not Igniting (No Heat, No Error Code)
Furnace runs but produces no heat; blower runs continuously with room air only.
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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
Thermostat not calling for heat correctly, Gas shutoff valve closed, Faulty Alpha gas valve, Failed hot surface igniter
How to Fix / Troubleshooting
Safety: If you smell gas, shut off the gas supply and ventilate the area immediately. Do not attempt further troubleshooting.
- Check thermostat settings: Ensure the thermostat is set to HEAT and the setpoint is above room temperature. Replace batteries if applicable.
- Verify gas supply: Confirm the manual gas shutoff near the furnace is fully open and other gas appliances are working.
- Observe furnace: Through the sight glass, watch for inducer start, igniter glow, and burner ignition. Note which step is missing.
- Address component issues: If the igniter never glows, it may need replacement (Alpha Hot Surface Igniter Assembly). If the igniter glows but no flame appears, the gas valve or control board may be faulty and should be checked by a technician.
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Repair Difficulty
Medium
3/5
Required Part
Alpha Hot Surface Igniter Assembly
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