Fridge Temp Control Question
I have a Dometic S630 absorption fridge from 1991. AFAIK newer ones work the same way. Apparently the freezer cools down and then eventually the fridge cools down to its proper temp range just above...
Forum Discussion
wnjj wrote:BFL13 wrote:
I don't know if the terminals for the 12v element on the board, when seeing the 12v would "back feed" the board, same as if the board were getting power from its regular 12v inputs.
Yes, it would likely back feed into your whole RV 12V system. If you do want to go this route, buy a 12V relay and use the wires heading to the element to power the coil and then use whatever voltage the 12V element can take through the switches terminals to the element.
Still not clear on this. You have the relay being operated by the temp control switching the 12v element terminals? So you still need regular 12v into the board at its 12v input terminals.
Now the 16 or whatever voltage supplied externally to the element is being switched by the relay.
How do you get say 13v to the relay from the board's 12v element supply terminals, while the relay is switching say 16v? Two different voltages. I don't understand how this relay works so it can do that.
