F29 displayed, burner lights then goes out, lockout after several attempts

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

Unstable gas pressure, Blocked burner on Protherm heat exchanger, Poor earth/ground connection, Faulty flame sensor or wiring

Safety first: Isolate power and gas.

Step 1 – Clean burner: Remove the burner assembly and clean ports with a soft brush and vacuum. Do not use sharp tools that can damage the burner.
Step 2 – Check grounding: Ensure the burner and chassis ground connections are tight and free of corrosion.
Step 3 – Flame sensor service: Clean or replace the flame ionization electrode and check its cable.
Step 4 – Gas supply check: A technician should verify inlet and burner pressures and correct any supply issues.

Hard 4/5

Main Burner Assembly

Check Price on Amazon

We may earn a commission from links on this page.