Just wanted to add this for anyone with an older 3way fridge having problems cooling on gas and searching for a solution. I have an original Electrolux fridge in a 1996 kontiki which worked fine on hook up and 12v (now that I've replaced the relay) but wouldnt cool on gas. It would light ok but there was very little change to the flame when turning the control valve. After disconnecting the gas pipe from the burner unit to blow out the jet i noticed the end of the gas pipe was clogged up with a soot like powder. This was blocking the pipe and restricting the gas flow. It was difficult to remove and I had to use a small drill bit twirled between my fingers to get it all out. Now i have a better flame that adjusts when turning the control valve and the fridge works again. Anyone else come across this?