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alpha innotec ground source heatpump

  • 09-02-2014 2:02pm
    #1
    55scorpio
    Registered Users, Registered Users 2 Posts: 2 ✭


    12kw Alpha Innotech GSHP running for over 5 years with very good results in heating.
    Service water has never performed as well even from installation.Installers out of business.
    Historic and current problems with achieving satisfactory service water temperatures.
    If the desired temp.is set to say 42c it will decrease to mid 30s within a week automatically.
    Consistent ALARM CODE 716 /HIGH PRESSURE coming on and has to be reset.
    This alarm sequence times are normally during the off time switch cycle ie when there is no demand for heating or service water and the heat pump is operating within its own circulation loop.
    l have also a pressure loss in the ground loop system since new and because it is minor have not dealt with it to date.

    Wondering has anybody come across similar issues with achieving hot service water or the pressure alarm code 716?

    Advice on the subjects appreciated


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