Well I am home now, but the heat side of the thermostat still doesn't work, I think it is the thermostat. checked all fuses and breakers, have propane. the one stat works the two heat pumps and the two gas furnaces. The stat will switch to the heat side, and will toggle between 1 and 2 unit but will not turn them on or adjust either one. but both AC units work now on cool, it is just the heat side that won't work. and I know that when the heat is switched on that even on electric heat the furnace will come if the temp inside is much lower than the setting on stat, when the temp gets up to setting the furnace will kick off and the heat pump will keep it there till it gets to cold to get warm air from heat pump than the furnace will take over again. Can these thermostats loose their programing after they have been setup or do they just go bad.