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    dennardh's Avatar
    dennardh Posts: 2, Reputation: 1
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    #1

    Jul 14, 2007, 08:34 PM
    Theromatat wires
    I have central heat and air can I use a 5 wire thermostat when the old one have 6 wires
    acetc's Avatar
    acetc Posts: 1,004, Reputation: 79
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    #2

    Jul 14, 2007, 09:01 PM
    If the old thermostat was using all six wires then you probably have a heat pump or two stage thermostat, what type of system do you have?where did the wires hook up to on the old stat?

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