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I have some general questions with regards to heat pumps and the settings for this.
I have it wired correctly and everything seems to be working well except for now that it has dropped below freezing. I live in the metro Indy area and I am looking at the settings for the Heat Pump particularly. The heat pump is a Carrier 13 Seer (I think) model. I took the default settings from the ecobee3.
Type: Air to Air
O/B Reversing Value: Energized on Cool
Min Cycle Off Time: 300 seconds
Min outdoor temp: 35F
Aux Heat Simultaneous Operation: Disabled
Since the outside temp has dropped below 35F, it has been running Aux heat. This is going to kill me with my electric bills! During the winter the temperature in Indy stays below 35F quite a bit. Which makes me wonder why a HP was installed in the first place if it shouldn't run under 35F. This defintely can't be the case, I would think I could drop the min outdoor temp to a lot less than 35F because it seems that basically is telling the ecobee3 to run Aux heat the moment the outside temp drops below 35F. I would also think that Aux Heat Simultaneous Operation would be a good setting enable.
I am worried that by changing from the defaults I will damage some equipment. Makes me wonder if I bit off more than I can chew. Any guidance here? Thanks!