Fraser-Johnston Poor Cross Ignition Between Burners

Furnace burners light but one or more burners do not cross‑light properly, causing uneven flame.

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, Misaligned burners, Rust buildup on burner faces, Low gas pressure

Safety first: Turn off gas and power before removing burners.

Remove and clean burners: Take out the burner rack and clean crossover slots and ports with a small brush and compressed air.
Reinstall correctly: Ensure burners are seated properly and aligned with the orifices and each other.
Observe flame: After reassembly, verify that all burners light smoothly from the ignited burner without popping or delay.
Professional gas check: If issues persist, have a technician verify gas pressure and manifold settings.

Hard 4/5

Burner Assembly

Check Price on Amazon

We may earn a commission from links on this page.