Bryant Evolution question
I have a question about the electric backup heat on my 2010 Bryant Evolution heat pump -
When the temp is below 30, the heat pump runs more or less continuously with the compressor on low stage, sometimes on high stage, and the backup electric heat only kicks on briefly during the defrost cycle.
But, when the temp is about 35 to 50, the heat pump will first run in low stage, then high stage, and then the backup electric heat will then come on for about 5 to 7 minutes. The system then stops and will not run again for about 1 to 3 hours.
Does anyone know if this is how the Evolution thermostat should be working? I thought the backup heat would only come on if the heat pump couldn't produce enough heat. My electric bills are low so it looks like the system is working well, but the backup heat activity caught my eye...