It will work on propane only if the fridge itself is unplugged from the AC, does not work on AC. If it is plugged in, it will not ignite the burner but as soon as you unplug the fridge the burner will ignite. I never get a check light, it appears it is working in the camper. I checked the heating element and it reads 42 ohms. I'm leaning toward the control board, but not 100% sure. Need Help!!
SOURCE: FRIDGE WILL NOT IGNITE IN GAS MODE
The part you are looking for is the thermo couple. It senses the heat from the flame and holds the gas valve open. The clicking will try three times and then go into lock out. You then will need to reset on the front of the fridge. When installing the thermo couple do not over tighten.
SOURCE: Dometic Fridge works well on AC but when running
Sounds like the thermocouple needs replaced or the thermostat.
SOURCE: Dometic RM2820 not working on AC Works fine on gas
Need to R&R the A/C heating element. Costs about $20.00
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Replaced the circuit board and it smoked. It is now doing the same thing. Any ideas???
Verify the following: voltage at outlet (123vac), voltage at DC connection (must be above 11vdc or the unit will not properly work), verify DC connection polarity is correct, check fuses on circuit board. If everything checks out good then you have a failed circuit board. Use Dinosaur Electronics if possible since they offer a three year warranty and typically are better made boards.
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