Beretta 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 burner, Incorrect gas pressure, Misaligned ignition electrode, Partially blocked heat exchanger

Safety: Turn off gas and power. Delayed ignition can damage the furnace and is a safety concern.

Do not continue to operate: Repeated booming can crack the heat exchanger.
Inspect burner and electrode: As described for A06, clean the burner and verify electrode position.

Gas pressure and combustion must be checked and adjusted by a qualified Beretta technician using proper instruments.

Professional Required 5/5

Main Burner Assembly

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