Forum Discussion

JimM68's avatar
JimM68
Explorer
Dec 30, 2015

Dometic Thermostat accuracy?

Our Monaco has the 5 button Dometic thermostat, controlling 2 atwood furnaces and 2 dometic penguin a/c's with heat pumps.
It has remote temperature sensors, 1 near the passenger seat, and 1 on the sidewall near the back of the bedroom.

the systems have worked perfectly, except the digital thermostat settings have never been close to "Real" particularly with the furnaces.

Our "comfortable" night furnace setting is 53 degrees!
First thing in the morning, I'll bump em up to maybe 58-61...
The actual temp in the coach at night is cool but not chilly, and it is warm during the day set to 60.

The front/rear zone behavior is identical. (Thinking this would rule out a sensor or sensor location problem)

The a/c's / heat pumps are similar, but not as bad, it is the propane furnaces that are "way off"

Is there any kind of adjustment / setting so these things more accurately reflect "Reality"?
  • Ivylog's avatar
    Ivylog
    Explorer III
    I have the same dual zone, 5 button Dometic Tstat but AquaHot instead of propane furnace plus a third zone on it's own Tstat and senor in the bathroom. During the day I adjust them much the same as at home... 74 in the summer and 68 during the winter. I just used my IR temp gun to compare the difference in indicated temp and actual. It's 1 degree warmer than the set temp of 74 and have never felt the need to check the difference before so I do not have your problem and do not know if it can be adjusted.

    I would send a PM to DougRainer as he knows these systems very well as a RV teck. He will know and willing shares his knowledge.
  • I stuck a "real" thermometer on the wall next to the thermostat. The Dometic thermostat has never been even close. And there does not appear to be any type of adjustment.