In my condo I have a heat pump with electric strips for auxiliary heat. When the outdoor temperature is quite cold, the heat never turns off. It reaches the set temperature, but keeps running.
When this happens, the aux heat turns on and off repeatedly. It seems like the same situation described here:
Question: Can anyone recommend a solution that allows adjusting the behavior of the aux heat (E.G. a separate CPH setting for the aux heat), so that the aux heat stays on longer.
Best Answer
When you have a heat pump the thermostat that controls it is a 2 stage thermostat. The first stage controls the heat pump and the second stage controls the heat strips. The heat pump operates off the first stage and if it can not produce enough heat and the indoor temperature falls below the thermostats set point by a certain amount the second stage energizes the heat strips. The heat pump will usually operate constantly and the heat strips will cycle on and off on the second stage part of the thermostat. There are a few different ways these units can operate depending upon the thermostat, unit and the wiring of these systems. Yours is probably the way I described. If you want to change the way the heat strips operate contact an HVAC contractor in your area and ask what your options are. Hope this helps