Tappan Delayed Ignition

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 or misaligned burners, low gas pressure to Tappan gas valve, restricted orifice, improper ignitor position

Safety: Booming ignition can damage the heat exchanger. Turn off the furnace and have it inspected. Do not continue to operate with loud bangs.

Steps (inspection only):

Turn off power and gas. Remove the burner compartment door.
Visually inspect burners for rust, debris, or misalignment. Do not attempt to drill or enlarge orifices.
Check that the hot surface ignitor is properly positioned at the burner it is intended to light.
Contact a qualified technician to remove and clean burners, verify gas pressure, and adjust ignition as needed.

Professional Required 5/5

Burner Assembly

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