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Type: Posts; User: jeffdg

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  1. Replies
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    I am a professional engineer, but not a Carrier...

    I am a professional engineer, but not a Carrier expert.
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    The hp is fine, works fine with the old stat, I...

    The hp is fine, works fine with the old stat, I just couldn't wire the furnace as the auxilary since it wasn't a dual fuel t-stat.

    When I first hook up the new stat, it acts as before during...
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    good questions: temp was 36 according to the...

    good questions:

    temp was 36 according to the OD sensor.
    Balance point set to 30

    But... I was in the "test mode" which (I believe) overrides all these settings and simply cycles the HP for...
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    UPDATE!

    Okay, new info:

    I reinstalled the Carrier t-stat and selected test mode (overrides all the programming to allow individual testing of HP-heat HP-cool and aux/e-heat (the last one is the furnace)....
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    Assume (for the moment) that it (the t-stat) is...

    Assume (for the moment) that it (the t-stat) is wired correctly (esp. since the old stat *now* does the same thing):

    What could cause the compressor lead to activate the furnace? Local...
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    tstats

    The original stat is a MapleChase dual-stage heat pump (though the system has the wiring for a single stage w/aux). The HP was wired as expected while the aux was empty... the furnace was wired to...
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    I'm working with a dual fuel setup: Lennox HP...

    I'm working with a dual fuel setup: Lennox HP with a gas furnace to run as the auxilary. Originally, there was a standard hp+aux thermostat (with the furnace set so it would only run if the user...
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