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Thread: Replacing Carrier Comfort Source with Honeywell Lyric

  1. #1
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    Replacing Carrier Comfort Source with Honeywell Lyric

    My existing heat pump thermostat is a carrier comfort choice, model TP-PHP01. The attached image is of the I/O panel mounted to the air handler. The red and black V+ and Vg wires go to a display/ sensor in the hallway. I want to replace this thermostat with a Honeywell Lyric. The question is do I still need the I/O panel or does the Lyric replace both pieces of the thermostat? Or do I connect the Lyric to the 6 matching color wires that plug into the I/O panel?

    Thanks,
    Will








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  2. #2
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    Quote Originally Posted by wschooley View Post
    The question is do I still need the I/O panel or does the Lyric replace both pieces of the thermostat? Or do I connect the Lyric to the 6 matching color wires that plug into the I/O panel?
    The Lyric would replace both pieces


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