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

    Jul 31, 2005, 07:59 AM
    Thermostat question
    I Have A New Honeywell thermostat that I just installed. And all of the colors are matched up it seems but my air handler will not shut off with my outside unit? And I have replaced the air handler electrical-contactor.
    labman's Avatar
    labman Posts: 10,580, Reputation: 551
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    #2

    Jul 31, 2005, 09:04 AM
    Check the thermostat and make sure the fan switch is on auto, not fan. Check the G terminal at the air handler to make sure it does not have 24 v to the B or C terminal. The air handler also has a timer that should let the blower run 90 seconds after the thermostat shuts the compressor off. It could be sticking.

    The contactor was a likely suspect, but not always the problem.
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