If there is more than a 3 degree difference in room temp. and the thermostat temp setting, your system will go to the propane furnace for heating. So say your thermostat for the motorhome shows the room temp to be 60 degrees and you set the thermostat to 70 degrees, and have the thermostat set for elec heat, the heat pump will come on for a few minutes and then switch over to propane heat because the temp. difference is more that 3 degrees. The only way to not have this happen is to raise your thermostat setting about 3-4 degrees at a time.
Be aware also that the heat pump heat is not effective once the outside temp drops below 45-50 degrees.
We use small electric heaters, when the outside temp isn't below freezing, so we can use the parks power rather than using our propane.
Steve & Jeri
2004 Dolphin 5342
2000 Jeep Cherokee 4X4