Monday 23 March 2015

Dometic fridge won't work on gas?

That is usually down to the thermocouple. Behind the fridge where the burner is there are two little finger like thingies that stick into the flame. One is the igniter - the thing that clicks like a cigarette lighter, and the other is the thermocouple, which is basically a little piece of metal that also sticks into the flame. If the flame is on, it heats up the metal which expands the stuff back along the little tube which is connected to the gas valve. So the gas will only flow if flame is detected. It's a safety feature so you don't think the fridge is on and then get blown to bits the next time you make a cup of tea. BOOM! If the thermocouple doesn't work properly, then the gas is disconnected as soon as you take your finger off the button.
Usually it's down to a combination of dirt build up and corrosion - and age related. Sometimes all you have to do is give the whole burner a good scrape and clean and blow out .... other times you might need to replace the thermocouple itself. It is not an expensive part - a pro guy should take no more than half an hour to fit one, but this does depend on how your fridge is fitted so don't quote me.
If you are a DIY type, I suggest this video, and the bit that shows the thermocouple is at 3mins20secs.
https://www.youtube.com/watch?v=rBxt2BG7JbE&spfreload=10


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