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Welcome to Just Answer, my name is ***** ***** I will do my best to help you with your issue. First I’ll need some more info so I have a more complete picture of you situation.
What's the model number of your unit?
The call prompt is automatic I have nothing to do with it. We can continue here. The model is on the rating plate which is usually on the back or bottom. But If you can tell me if this is a milli-volt system (small armored cable coming from the pilot that has 2 leads connected to the gas valve) I have a likely culprit
Ok, almost all Jotul's are millivolt so this is what I suspect: the flame sensor (thermopile) in the pilot flame is what generates all the power to operae the gas control valve. It does this by keeping a temp differential between the hot tip (in the pilot flame) and the base of the sensor. This is called the cold junction. I suspect there is a stray flame from the main burner that is hitting or it too close to the base of the thermopile and it's heating up that cold junction which kills the power to the gas valve which shuts off the burner.
You have to identify where that flame may be coming from and do what's needed to redirect it. You might have moved something (a log) that causing that flame to be where it shouldn't.
You could have a weak thermopile. If the unit is more than a few years old then a new thermopile is the first thing I'd replace.
Do you have more questions?