Actually, I had it looked at once before when it did this and it will cost about $600 to replace 2 components. Last time the guy said he could do a work around but if it gave the error code F7 it would mean it was toast. It actually worked for 5 more years after he fixed it.
I figure it's not worth putting $600 into a 12 year old appliance. And as I do all the cooking I would prefer a wider oven, even with a double oven it's a challenge to do a big family holiday meal with the narrow model we have.
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