Frigidaire Delayed Ignition / Burner Light-Off Problem

Furnace makes loud banging or booming noise at startup

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

Dirty burners, Misaligned burner orifices, Low gas pressure, Slow-opening gas valve

Safety: Booming ignition can be dangerous. Turn off the furnace and gas supply and call a professional if the problem is severe.

1. Visual inspection: Look through the sight glass for uneven or delayed burner ignition.
2. Do not adjust gas: Do not attempt to adjust gas pressure yourself.
3. Professional cleaning: Have an HVAC technician remove and clean the burners, check orifice alignment, and verify gas pressure and ignition timing.

Professional Required 5/5

Burner Assembly

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