Too smart a thermostat?
Freeze warning in our area tonight, and they ain't kidding. Hadn't dumped fresh tank and needed to purge lines. So much easier on the class A. Then I decide to keep coach warm so I can follow up ...
Forum Discussion
Our residential Heat Pump operates in lower outside temperatures than the our RV's Heat Pump because the residential unit has a Defrost Mode. When the outside humidity is higher and with cool outdoor temps, the outside heat ex changer can frost over. The residential unit periodically goes into defrost mode to melt the frost off, then continues to operate in lower outside temps like 20 degrees. Our RV Heat Pump does not have this feature, so when the outside heat ex changer frosts over, it stops and the gas furnace cuts in. If I go outside and look, the heat ex changer is covered with white frost. With low outside humidity it can work in colder temps which could vary from above or below freezing outside temps.
Also in Electric Heat mode, if I turn up the RV thermostat more the 4 degrees above the room temperature, the thermostat will run the gas furnace instead, by design, because the furnace will heat the RV faster. If I want to use electric Heat Pump heating only, I will up the thermostat setting 4 degree at a time till the desired temp is reached. This may not be how your system works, but this is common for basement Coleman Heat Pumps.
Also in Electric Heat mode, if I turn up the RV thermostat more the 4 degrees above the room temperature, the thermostat will run the gas furnace instead, by design, because the furnace will heat the RV faster. If I want to use electric Heat Pump heating only, I will up the thermostat setting 4 degree at a time till the desired temp is reached. This may not be how your system works, but this is common for basement Coleman Heat Pumps.
