dometic fridge intermittent

I agree. Once the basic troubleshooting is done to rule out anything obvious it's time to have the pro's work it. My Norcold did the same thing, both heaters were hot hot, but the thing would not cool on gas or electric. Seems the freon (or whatever is in them) had leaked out. I noticed a yellow/green substance but it matched the color of the local pollen so didn't alarm me. In the end they replaced my entire fridge as it had a couple other problems and it was more cost effective to replace. Luckily my extended warranty covered the cost as it was over $5k before all was said and done. Between the cost of the fridge and labor it can get very expensive. Glad yours is still under warranty.