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  1. #1
    Join Date
    Apr 2007
    Location
    Phoenix AZ
    Posts
    89

    carrier heat pump

    hey everone


    i have been working on this carrier unit for some time .....its not cooling of course....its a 50hjq016 we have replace comp # two last month its works fine .....comp number 2 is the one giving us trouble....i replace the two check valves on the evap side of it and i have high super heat and high sub cooling .....unit is only giving out a 10 deg delta t .....need help

  2. #2
    Join Date
    Dec 2009
    Location
    Fort Worth, Texas
    Posts
    142
    high subcooling means overcharge, that with high superheat means restriction.
    check your txv and driers.

  3. #3
    Join Date
    Apr 2007
    Location
    Phoenix AZ
    Posts
    89
    did the drier when i opened the system and weighed in the charge......i was thinking i have a restriction in the evap coil???????

  4. #4
    Join Date
    Aug 2011
    Location
    Los Angeles, CA
    Posts
    34
    Easiest way to find a restriction in the eval is to kill the I.F.M. and run the compressor. If the eval is restricted you wont get uniform icing on the distributors

  5. #5
    Join Date
    Apr 2007
    Location
    Phoenix AZ
    Posts
    89
    thanks guys ....i will see what it does on monday morning and post the results ...

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