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  1. #1
    Join Date
    Jan 2010
    Posts
    101

    HZ322 Panel and Emergency Heat

    Our Trane air handler has a HZ322 zone panel installed on it. How does the "emergency heat" button operate? Does it turn on auxiliary heat permanently or just for 1 heating cycle? Does it shutoff the Trane heat pump compressor? Just looking for an explanation for what this button does and if I will ever have a need to use it. Thanks.

  2. #2
    Join Date
    Feb 2011
    Location
    North East Ohio
    Posts
    742
    This is a question for your installer. It depends on how the units and board are wired.

  3. #3
    Join Date
    Jan 2004
    Location
    Lancaster PA
    Posts
    66,832
    When set to emergency heat. it only runs the aux heat. The heat pump won't operate.
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    How many times must one fix something before it is fixed?

  4. #4
    Join Date
    Jan 2010
    Posts
    101
    Thanks.

    The installation was done 4 years ago and the contractor has gone out of business.

  5. #5
    Join Date
    Jul 2006
    Location
    Virginia
    Posts
    4,515
    if the l wire is hooked up properly all you have to do is turn on emergency heat at the thermostat

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