I have a 1990 dometic that works fine on electric, but barely works on gas. A few weeks ago it lasted about a day on gas, now it melts down within a few hours. The cooling unit is spotless, I mean no rust, barely looks like it was ever used. The regulator was replaced, the pressure at the burner is 12, the burner is spotless, no rust in it. The flame is a strong blue, never goes out , and the chimney temp, checked with an IR thermometer is the same wether on gas or electric. The chimney is clean as far as I can tell, I've blown air up it, and using a mirror, looks clean inside. I have cleaned the orifice with alcohol, made no difference, and the burner is in position directly under the chimney. I have owned this for about 4 yrs and it never really worked well on gas, now it's really getting unuseable, unless it's plugged in. Oh and all the other gas appliances work fine. What's left??the board??
