Dometic Thermostat accuracy?

JimM68 wrote:
ok, some of you guys are way confusing me...
Perhaps talking about several different systems?

I have a Dometic digital system with a 5 button controller that connects to the front AC with a 4 wire phone cable (the front AC then connects to the rear one with another 4 wire phone cable). This is a digital connection that has nothing in common with any thermostat used in a S&B house...

My "problem" (if you can call it one, cause the system works fine) is that in AC or heat pump mode, "Comfortable" is a normal 68ish setting on the thermostat.
If "furnace" mode, "comfortable" is about 55.

Vastly different.

I am wondering why the "number" is so different in different modes, and if anything can be done to make the number "kinda the same"

One would think that a setting of 68 on the thermostat would result in roughly the same temperature in the coach regardless of the AC / heat pump / propane furnace mode?

And again, this behavior is identical in both zones. Physically different hardware.

I'd really just like to see the same inside temp with the furnaces on as with the heat pumps on, with the same number set on the thermostat?

Your thought process is correct. It SHOULD be the same regardless of Furnace or Roof. But, due to designs of Rv's, the LP furnace systems blow out extremely hot air at the floor level and then that air dissipates before the wall sensor has a chance for an accurate reading. This is why HP's became so popular 16 years ago when they were originally offered. The Heat from an HP is a more gentle heat and comes out of the roof vents. As long as the outside temp is above 35 to 40 degrees, the HP will heat your RV more accurately. If you do NOT have a HP(AC only) then you live with the problem or go to someone that has the knowledge and experience to fix the sensor problem. Even in regular RV's that have a furnace and a mechanical tstat, the hotter furnace air is a problem as the air is so hot at the floor level. Doug