Problem with Dometic 2652

[rctaw]

I have a Dometic 2652 fridge that was manufactured in 2003. It works properly on shore power. It will not start on LP gas only. After it tries to automatically light itself several times, it will finally give the "check" light. Oddly enough it will work on LP if you first start it on shore power and then unplug from shore power while the fridge is set to automatic. I know that is a little confusing but does anyone have any ideas? I have looked at the manual on line in the troubleshooting section and it doesn't really cover my exact problem. I plan to follow the instructions for failing to start on LP and see what happens, but was just hoping to get some other thoughts on it as well. Thanks in advance.




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[rctaw]

donn0128 - I will get these done and see if it helps.

wrgrs50s - I was thinking like you in that if it would light after shore power then the igniting system should be okay, but I didn't know enough about how it operates to be sure. If the cleaning doesn't help I will look into this.

Thank you both for your thoughts and replies.

[wrgrs50s]

I had the opposite problem recently where mine in the on/auto mode would jump straight to propane and would not work on electric when hooked to shore power. After testing the heater rod and other recommended diagnostics, I was sure it had to be the main lower circuit board and replaced it only to find the problem still existed.

After much frustration, I decided to replace the eyebrow circuit board which houses the on/off/auto and propane switch. That resolved my issue and now works in both modes.

Since your propane works in auto only after unplugging the shorepower I would think that would mean all of the propane ignition systems are working once receiving the proper command from the main circuit board. I'm wondering if there's a possibility that the eyebrow circuit board is not providing the right signal to operate on propane only when switched to override auto. Just a thought !!!

[donn0128]

I would first clean the chimney, then check the flame sensor, then clean the orifice, then check the ignitor.

[rctaw]

Thanks for the quick reply. I was thinking about that being one of the possible problems. My igniter failed as well a few years back but it wouldn't start at all whether on shore power or lp. I think you have a good idea to have a spare, I may get one and just try it unless I learn something different in my troubleshooting.

Also to the Moderators...I just realized I posted in the Forum Technical Support section. If you could put me in the right spot I would appreciate it.

[Fresno_Tundra_D]

Could be a bad Igniter. I had similar symptoms with the same unit and they replaced the igniter. I bought a second igniter and keep it with me in case it happens again.