Originally Posted by M&K Hoffman
Good luck.... I have searched many, many threads here and on other forums and the answers all generally the same and not helpful if you have the same problem I am having. I have a Dometic DM2652LBX refrigerator that I have had problems with it not get cool enough the last three uses. Started Memorial Day week-end running in the low 40's with outside temps mid to upper 80's. Had nearly the same conditions 5 nights in mid July except the refrigerator temps were getting into upper 40's. Just returned from 8 nights at our county fair with daytime temps. mid to upper 80's and night temps low 70's and the refrigerator ran in the upper 50's. Darn good thing there is lots of fair food to consume because we ended up tossing most everything in the refrigerator. Yes I tried it on 120 vac power and on LPG and conditions were identical. Yes trailer was level. Checked the thermistor today and at ~76 degrees it read 3.058K ohms and immersed in ice water for at least 1/2 hour it read 7.07K ohms. Not exactly what the chart calls for, but seems "in the ballpark" and is definitely changing with temp. I just located a test where you disconnect the heater from the circuit board and apply 120 vac directly to the heater. Let it run 10 to 12 hours and if it get cold, it's a control problem.
I've got a Dometic DM2652LBX and it was running like yours. I installed two of these and it performed much better. Air flow is key.
1988 Coleman Sequoia - popup (1987-2007)
2012 Roo19 - hybid (2012-2015)
2016 Mini Lite 2503S - tt (2015 - ???)
2011 Traverse LT, 3.6L, FWD
2009 Silverado Ext Cab, 5.3L, 4x4, 3.73
2016 Silverado 2500HD Dbl Cab, 6.0L 4x4, 4.10