Set Appliance State:

Isolate Mains Power to appliance as per TOPs P4
Remove burner door assembly

Observation:

Check that the burner is in good overall condition
and is not restricted or blocked.
Note:
Per manufacturer instructions the burner seals should be checked before refitting, however they do not require replacement unless the seals are worn or damaged. Refer to ADAPT for more information.
Do not refit burner door until diagnosis is complete.