Sometime in the last year the Dometic RM2310 in my '95 Roadtrek Pop. stopped working on both 12v and 120v: it still works on propane. I am told by the service shop that the complex power source selector switch has failed: this diagnosis needs to be verified, there are other possibilities, I think. The complex replacement switches are no longer available from Dometic. I can limp along on Propane for a while, but I really value the 3-way power option.
I am wondering if it is practical (and advisable) to bypass the rotary switch which chooses between these functions for the 12v and 120v power sources, adding toggle switches (one would have to be careful not to have more than one power source on at once.) I have the wiring diagram.
I have already spent too many $$ fixing unforeseen problems on this RV to want to replace the refrigerator, unless a new one offers substantially better cooling in all modes.
My Dometic IS pretty anemic: if I got mine running again, fully serviced, and made all the improvements to it suggested by Red Rover*, I doubt it's performance would be that that much improved. (It gets up to 115*F here in S. NM, and although I head to cooler climes to camp, everything will likely be thawed by the time I arrive, and won't refreeze.)
One of Red's suggestions is to add an outside air scoop to create a ram effect to improve cooling. At what outside air temperature would this device become detrimental? I doubt 115*F would be helpful.
And is this mod. safe if cooling with propane while driving?) Some people never use propane while driving, suggesting at least a perceived risk.
* http://www.davewhitmore.net/RTModsImprovements%20to%20our%20Roadtrek%20190%20P opular%208-20-12.pdf
Dometic offers the RM2351 as a replacement for $600 + $150 shipping + installation, but I don't know if it cools any better than the one I have. Anyone familiar with it?
Is there something better? Must be absorption type, and run on at least 120v AND Propane. (The unit dimensions are about 29-3/4" hi x 20-1/2" w x 21-3/8" deep: no room fore something larger).
Perhaps this inquiry should be posted on a more general RV forum, if there is inadequate response here. (Not that in my experience Class B Forum folk lack in good suggestions!!!
Thanks for any suggestions for repair or replacement.