Giant Delayed Ignition

Water heater burner backfires or makes a loud boom at ignition

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 orifice, Incorrect gas pressure, Misaligned igniter, Restricted combustion air

Safety first: Turn gas OFF immediately. Do not continue to operate the heater. Risk of fire or explosion.

Inspect burner and orifice: Remove and clean the Giant burner and orifice with a soft brush and compressed air.
Check igniter position: Ensure the igniter is correctly positioned relative to the burner as per Giant specifications.
Combustion air: Verify that combustion air openings are not blocked.
Gas pressure: Have a licensed gas technician measure and adjust gas pressure if needed.

Professional Required 5/5

Giant Main Burner Assembly

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