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    tqquin Posts: 1, Reputation: 1
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    Jul 14, 2012, 04:35 PM
    How do you reverse polarity when replacing circuit board
    Replaced circuit board (honeywell) on my heat pump unit with new, retailer said be mindful of polarity, you may have to reverse it. Sure enough, red light blinks nine times, manual says you have reverse polarity or not grounded, its grounded, so how do I reverse polarity ? Thanks

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