EM emergency heat is when you turn it on manually to overide the heat pump.
Auxiliary heat is when it cannot keep up with the heat demand.
If you set it to heat and your setpoint was 2 degrees higher than the room temp it may turn on the Aux heat. Was it showing Aux heat? You said no EM heat but was the Aux heat on?
There may be a time delay B4 it kicks in the Aux heat.
Auxiliary heat is when it cannot keep up with the heat demand.
If you set it to heat and your setpoint was 2 degrees higher than the room temp it may turn on the Aux heat. Was it showing Aux heat? You said no EM heat but was the Aux heat on?
There may be a time delay B4 it kicks in the Aux heat.