My Avanti G2404CW oven wont stay lit - Avanti Kitchen Ranges

SOURCE: Avanti DG241BS - oven will not stay on

There has to be a protection system in the burner assembly to cut the supply of gas to the burner if it does not light. For the case of an oven the supply must be cut off immediately if the burner and its pilot go out. For that gas control system to work the burner control must "recognize" with a sensor when the burner is lit and when it is not. Pushing the knob "in" momentarily on this model bypasses the protection system momentarily to allow a burner to be ignited in the first place. If releasing the knob extinguishes the flame the control system is not "seeing" the flame. I tried to find some detail info on you particular ignition system but to no avail so all I can offer is a general approach to these kinds of problems . You need to find and clean or replace the sensor used to detect a flame. It could be an optical one (doubt that) or a temperature flame sensor, a thermocouple sensor, or some other kind I haven't thought of. Fixing this problem involves first determining what kind of sensor it uses. A copy of a service manual for this model can help you determine that. Try to clean the flame detector, and if that doesn't work you have to replace it or the gas control assembly it is a part of. If you have a spark ignition and its not sparking when it should first clean it --carefully--. Spilled food can short them out. Unplug the range before doing this. The owners manual shows it to be under the top burners which can be removed for cleaning this.

SOURCE: The dial on my Avanti 24

It sounds like you are having an excesive buildup of gas pre-ignition. You should hear no "Whooom" sound.

The ignition assemble likely needs to be cleaned of rust, dirt, grease etc. That is the typical cause if improper ignition, gas buildup pre-ignition etc.

The problem of not staying lit is caused by either the flame sensor not sensing flame, (which may need to be cleaned or replaced.) or that the flame is simply being blown out by the air movement as a result of the sudden combustion of excessive gas build up.

So, to summarize, the ignition and burner assemblies need to be cleaned, and the flame sensor may need to be replaced.