Will thermostat show heat pump in defrost mode
We have a Trane XL16i with a Honeywell VisionPRO IAQ thermostat. When the heat pump is on, the thermostat shows Heat On mode, but even when the heat pump is defrosting the Aux Heat On does not show. When there is a several degree temperature variation between requested heat and actual heat it does show the Aux Heat On. Is this the expected information in the defrost mode?
Our old system with its very simple thermostat would show the aux heat on light when the system was in defrost mode.