Dometic fridge issue

[Ronjulee]

My 3 way RM 4605, dometic is a smart selector type. When on gas it reaches its set temp and goes into hibernate mode till time to start again. Sometimes when it starts again, it will flame for a couple of secs then go into fault and does not come on till manually switched off and on again.
What is the solution.

[dieseltojo]

Hi Ronjulee, and welcome,
My fridge is ancient so just hang in there to get a decent answer. Me I always seem to have a themo switch problem but yours might be electrical.
Though it does seem as though some thing is not resetting correctly.

[jock]

Welcome .....Suggest you contact Dometic...I'm sure they have a Technical help section.

Jock

[Old Techo]

Sometimes when it starts again, it will flame for a couple of secs then go into fault and does not come on till manually switched off and on again.

G'day and welcome Ronjulee,

The things that spring to mind needed to make the fridge restart on gas are adequate gas flow (solenoid on), reigniter module (sparking) and thermocouple (sensing gas flame heat).

The fact that it works the first time suggests all three must be OK at the time. Why it fails to restart after shutdown is anybody's guess. Could be something is affected by the heat generated in the previous cycle.

On restart you say it flames? How do you know and is it really only a couple of seconds or maybe longer? If it flames then the solenoid must have opened and reigniter must have worked.

[PeterInSa]

Re (If it flames then the solenoid must have opened and reigniter must have worked.)
But, Is the solenoid staying active long enough for the Thermocouple circuit to hold it in. Is the Auto start electronics affected by heat, ie a capacitor drying out that reduces the delay time for the solenoid to stay open...........