I'm certainly no expert but that doesn't sound right to me - we have never had any issues at all with ours. It might help others to form a judgement if you say what sort of gas supply you're using. Also, I can't remember exactly why it happened but I do remember that there was a recall on that model a couple of years or so ago - it might be worth doing a bit of research and checking your serial number with Dometic to see if yours was one of those recalled.