At outdoor temperatures above the high balance point, only the heat pump is allowed to run. At outdoor temperatures below the low balance point, only the auxiliary heat source is allowed to run. At outdoor temperatures between the high and low balance points, both the heat pump and auxiliary heat source are allowed to run. You can modify the high and low balance points under Menu > Settings > Heat & Cool > Auxiliary Heat.
For more information or a visual representation of steps please reference our user guide here


