2005 13 footer, the Dometic RM2193 installed doesn't have a visible thermistor. Nor can I see a penetration through the back wall that might allow wire access to feed a thermistor. I've been running it on propane, and everything works as it should I guess, but I have no way of adjusting the cooling other than running outside and adjusting the propane flow at the ignition panel. Before I start unscrewing the cooling fins inside the refer, are any of you missing a thermistor? FWIW, the parts diagrams at Dometic don't show one for that model.
Mon, 03/16/2026 - 19:46
#1
Dometic 2193 Thermistor
You're right about the only temp control for gas cooling on that model is outside. The advantages to that older model is simplicity and absolutely no power drain when off grid.
Thanks LEberhardt, I'm appreciating the fact that I'm not going crazy. And, I'm learning to appreciate the Dometic's simplicity. I've been running experiments with it the last ten days or so and as I've become familiar with it, I like it. It's very easy on propane, and even with the heat in San Diego this last week, I can go from an internal temp of 75° down to 26° in about 10 hours. If I put (4) 1L bottles of water that have been pre-frozen in the top rack, I can keep it under 40° without power or propane for about 5 hours. This was while we were having daytime highs of 97°. If I added in a couple of Tupperware ® containers containing ice (to simulate frozen meals), I was able to extend that out to 8+ hours. My only complaint (I'm old and have a tendency to gripe) is that the propane flame is impossible for my eyes to pick up in the daylight. The only way I can tell it's on is to hold a lighter up to the viewing port and see if the flame from the burner will light the gas from the lighter. A small price to pay for something that doesn't really have any moving parts to break. Thanks again.