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  1. #1

    Rheem Unit - HPC Reset - Why?

    What is the High Pressure Control reset button for on the outside unit and what causes it to need to be reset - A/C was out last night - turned it off overnight - turned on in morning - still blowing warm - went out back and saw fan on condenser unit not moving - saw reset switch - pressed it and it started up and is now blowing cold inside - so - what caused the need for a reset?

  2. #2
    Join Date
    May 2007
    Location
    DC Metro Area (MD)
    Posts
    3,371
    It's there to protect the compressor. If it has a high pressure problems, needs service.

  3. #3
    Join Date
    Jan 2004
    Location
    Lancaster PA
    Posts
    67,879
    If last night was the first time you tried to use your unit in cooling mode.
    Check your air filter.
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    How-to-apply-for-Professional

    How many times must one fix something before it is fixed?

  4. #4
    Join Date
    Mar 2008
    Location
    South Mississippi on the Golden Gulf Coast. 100 degree heat and 90% pluss humidty.
    Posts
    46
    possible cloged/dirty cond. coil. System needs to be properly checked out , cleaned and serviced. Just pushing reset will cause damage to system.

  5. #5
    Join Date
    Apr 2009
    Location
    R.O.T.
    Posts
    301
    Quote Originally Posted by beenthere View Post
    If last night was the first time you tried to use your unit in cooling mode.
    Check your air filter.
    If It's a heat pump, this might be the case. If it's a conventional a/c unit, a dirty air filter will not make the HPC trip out.

    There is a number of things that could cause the HPC to trip, better call a pro fer service.

  6. #6
    Join Date
    Jan 2004
    Location
    Here and there
    Posts
    4,803
    Post model#'s in and out
    i belong to peta ... people eating tasty animals. all my opinions are just mine.

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