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  1. 01-06-2013, 06:52 AM #1
    Absorber1981
    Absorber1981 is offline New Guest
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    Carrier 30RQ EXV problem

    Hi All. I have 30RQ120 Chiller with AquaSnap Control System.
    In cooling mode, the unit is working fine.
    In the heat pump:
    1. The unit starts up and gets into position EXV 27% and off for high pressure
    EXV on the sensor does not respond - only 27%
    I heated the sensor - no reaction - 27%
    and off for high pressure
    In what could be the reason?
    Thanks in advance for your help
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  2. 01-06-2013, 04:55 PM #2
    steve wright
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    Removed sorry no *
    Last edited by steve wright; 01-06-2013 at 05:13 PM.
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  3. 01-06-2013, 06:09 PM #3
    Dallas Duster
    Dallas Duster is offline Professional Member*
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    With that much info it is hard to troubleshoot it from the USA.
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  4. 01-15-2013, 06:40 PM #4
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    rscamaro
    rscamaro is offline Professional Member*
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    Quote Originally Posted by Absorber1981 View Post
    Hi All. I have 30RQ120 Chiller with AquaSnap Control System.
    In cooling mode, the unit is working fine.
    In the heat pump:
    1. The unit starts up and gets into position EXV 27% and off for high pressure
    EXV on the sensor does not respond - only 27%
    I heated the sensor - no reaction - 27%
    and off for high pressure
    In what could be the reason?
    Thanks in advance for your help
    Generally if you are only opening 27% and the unit is shutting off by high pressure safety then you have a pressure problem. Overcharge or no water flow.

    ...Ron
    Roof Rat
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  5. 01-20-2013, 12:38 AM #5
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    manny238
    manny238 is offline Professional Member*
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    You should be able to force the EXV open If you know how to put the system into test mode.
    RTFM!!!
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