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    evans668 Posts: 1, Reputation: 1
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    Aug 21, 2010, 08:24 AM
    I am updating from an old mercury white rodgers thermostat to a new Honeywell th8000.
    Followed the directions to the best of my ability, but I can't get the AC to kick on? Fan come on, but AC outside doesn't. Any help would be great. Old thermostat had a yellow Y wire soldered to the back of the unit and then connected to the terminal. Also had a jumper running from rc to rh. Thanks

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