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Heat pump -> installing digital thermostat.

Installing the Honeywell RTH7500 series on a heat pump system. This is an OLD HOUSE and I've followed all the diagrams, yet I can only get uncooled air or heated air. My husband started working on this and left for work, now I'm stuck in a hot house and I'm pissed! Any ideas? Honeywell is closed on Sundays.

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  • tachederouss May 13, 2009

    It turns out that it was partially the wires not being fully secured and the compressor still being overheated from being turned on and off too much. I fixed it myself and everything's working fine!

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Sounds like the thermostat is not energizing the reversing solenoid , unless you have some experience with electrics i recommend that you call a trades person, to check this problem a multi meter is required and requires the user to know how to work with power , please do not attempt it yourself ...

Posted on May 11, 2009

  • Paul G
    Paul G May 11, 2009

    sounds like the thermostat is not energizing the reversing solenoid , unless you have some experience with electrics i recommend that you call a trades person, to check this problem a multi meter is required and requires the user to know how to work with power , please do not attempt it yourself ...

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