Armstrong Air Partial Burner Ignition / Crossover Failure

Furnace ignites but some burners do not light, causing uneven heating and possible flame rollout trips.

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 crossover ports between burners, Misaligned burners, Cracked burner, Low gas pressure

Safety: Turn off gas and power. Incomplete burner ignition can cause dangerous conditions; professional service is recommended.

Technician steps:

Remove burner assembly and clean crossover channels thoroughly.
Inspect burners for cracks, rust-through, or warping and replace as needed.
Verify proper burner alignment and secure mounting in the Armstrong Air burner rack.
Check gas pressure and adjust the gas valve regulator.

Professional Required 5/5

Burner Assembly

Check Price on Amazon

We may earn a commission from links on this page.