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  1. #1
    Join Date
    Jun 2001
    Louisville, KY
    Package heat pumps with economizers don't defrost well when economizer stays at 20% during defrost cycle.

    Something to consider when trying to determine cause of excessive defrosts and ice.

    We installed relays to disable the economizer during a defrost. Church is considering CO2 sensors and 0% OA unless IAQ demand.
    Perhaps you should have read the instructions before calling.

  2. #2
    Join Date
    Nov 2004

    Thumbs up

    Good info benny, now just share more of the stuff you have previously learned! LOL!

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