Dometic RM2351 Refrigerator not lighting with gas

Depending on model year (serial numbers) the Dometic RM2351 used a 'thermocouple' and later model year uses a spark electrode (which is the flame sensor).


Your main flame is lighting off (good spark) but won't stay lite because circuit board is not getting the flame proof signal....either bad sensor (likely) or bad circuit on board

Dometic thermocouple....part #2932052018.......LINK


Dometic spark electrode....part #2932781012.....LINK


Before replacing....pull thermocouple/spark electrode (whichever one you have) clean the connection at board...make sure it's tight and clean up thermocouple. Spark electrode gap should be 1/8" and both need to be engulfed in main flame.