I have a Carrier Performance system and the Aux is on a LOT. Example: the other morning it was on about every 10 min. in one hour's time. It was a cold morning (about 39 degrees). The other night it was on when the outside temp was 60. It does not seem right that the Aux is on so much. I understand the defrost may cause the aux to run, however, on and off every ten minutes and on and off when the OAT is in the 40's, 50's, 60's seems a bit much. T-stat was changed out and is still a Carrier stat. Any ideas? Was told that the Carrier stat is used because it is an 8 wire. Any ideas on that? Would really appreciate any thoughts.