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joe_blow's avatar
joe_blow
Explorer
Jan 27, 2014

Dometic fridge problem

Hello,

2008 Warrior CR3705.....Well for some reason it seems that the gremlins got me again. I posted a few weeks ago about my large dintette slide having issues and now my fridge.

Please bare with me as I will try and make it short but descriptive.

The fridge works as normal on 120V AC (gen and plug in) but will not function on propane. I made sure the Dometic recall was done a few years ago so I am good there. Unfortunately I just got back last night so I have not torn into it but I can offer this information.

Propane tank is full, the line was feeding the RV properly so I attempted to restart the fridge several times with no luck, the "CHECK" light would come on after a few minutes. I removed the rear cover in the storage and checked all the obvious (fuses etc). I had my friend shut it off and restart it. There was NO ignitor click. We tried several times with no success. I decided to have him shut it off, switch to "GAS" only and restart the fridge but this time I manually lit the pilot with success. I watched it for several minutes and the fridge remained lit for 12 hrs.....then the CHECK light came back on. I did the same thing in the morning and again the fridge worked for only 12 hrs and then the "CHECK" light came back on indicating the pilot light went out.

Just to summarize:


Fridge works on AC (gen and plug in)
Ignitor does not appear to be working
I can light the pilot light manually and it stays on
Fridge fucntion for 12hrs when I manually lit it (2 days of camping)

Hopefully someone can offer an explanation for the problem I am having and possibly point me in the right direction in the way of parts I may need to fix it

I appreciate the time

Joe

18 Replies

  • Hi old biscuit,

    Just got a chance to tear into it. The model is an RM3862. I have checked everything possible and still outside messing with it. It is confirmed the ignitor is just not sparking or attempting to spark. The ignitor plugs into a relay and the plug is very difficult to remove, does this plug come out before I destroy it trying to remove it to check connections?

    Also you did take note that I could light it manually but WHY does it only stay lit for 12hrs and I have to go through the relight process?

    Thanks for your help

    Joe
  • joe blow wrote:
    Old-Biscuit wrote:
    The spark electrode is not getting power or is not sparking

    NO power.....could be bad circuit on lower board/bad contact on lower board.
    Pull connectors for 12V DC on board, clean contacts and make sure the pins are making good contact. Pull high voltage wire to ignitor and clean/check for tight connection.

    Not sparking......could be cracked ceramic/could be bad high voltage wire/could be gap is not correct (3/16" and directly over burner slots)/could be bad electrode.

    With it 'working by manually lighting'......then is sounds like problem with power to spark electrode

    Which model of Dometic?


    I'll get you the model number ASAP. Out of curiosity, is the lower board located behind the cover I pulled where all of the workings of the refrigerator are located?


    Yes...lower left side
  • Old-Biscuit wrote:
    The spark electrode is not getting power or is not sparking

    NO power.....could be bad circuit on lower board/bad contact on lower board.
    Pull connectors for 12V DC on board, clean contacts and make sure the pins are making good contact. Pull high voltage wire to ignitor and clean/check for tight connection.

    Not sparking......could be cracked ceramic/could be bad high voltage wire/could be gap is not correct (3/16" and directly over burner slots)/could be bad electrode.

    With it 'working by manually lighting'......then is sounds like problem with power to spark electrode

    Which model of Dometic?


    I'll get you the model number ASAP. Out of curiosity, is the lower board located behind the cover I pulled where all of the workings of the refrigerator are located?
  • Thanks guys. I am at work but will get you the information by tomorrow. Thanks for the help so far!

    Joe
  • Old-Biscuit wrote:
    The spark electrode is not getting power or is not sparking
    ....
    Which model of Dometic?
    Everything Old-Biscuit said.

    The spark gap from the electode to the burner should be 3/16".
  • That Dometic might be on the recalled list. I'd probably go and check serial numbers.
  • Joe I'm going to move this thread over to the Tech Issues forum from Toy Haulers as I think you'll get more assistance with your issues.

    Steve
  • The spark electrode is not getting power or is not sparking

    NO power.....could be bad circuit on lower board/bad contact on lower board.
    Pull connectors for 12V DC on board, clean contacts and make sure the pins are making good contact. Pull high voltage wire to ignitor and clean/check for tight connection.

    Not sparking......could be cracked ceramic/could be bad high voltage wire/could be gap is not correct (3/16" and directly over burner slots)/could be bad electrode.

    With it 'working by manually lighting'......then is sounds like problem with power to spark electrode

    Which model of Dometic?