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    klpabon's Avatar
    klpabon Posts: 1, Reputation: 1
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    #1

    Dec 26, 2011, 04:26 PM
    Why is my Thermostat going to auxillaty heat?
    My Honeywell thermostat is going to auxiliary heat!
    Missouri Bound's Avatar
    Missouri Bound Posts: 1,532, Reputation: 94
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    #2

    Dec 27, 2011, 07:32 PM
    Well not too much information on your post, but in the colder months the heat pump goes into a defrost cycle. This is determined by outdoor temperature and by a thermostat in the outdoor unit. When the heat pump goes into defrost it actually goes into a cooling mode and to keep heating during that cycle the auxiliary heat will come on. I'm thinking that is your scenario.
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