klpabon
Dec 26, 2011, 04:26 PM
My Honeywell thermostat is going to auxiliary heat!
Missouri Bound
Dec 27, 2011, 07:32 PM
Well not too much information on your post, but in the colder months the heat pump goes into a defrost cycle. This is determined by outdoor temperature and by a thermostat in the outdoor unit. When the heat pump goes into defrost it actually goes into a cooling mode and to keep heating during that cycle the auxiliary heat will come on. I'm thinking that is your scenario.