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Baxi 105HE water pressure going too high

Discussion in 'Plumbing and Central Heating' started by dondaviduk, 11 Apr 2015.

  1. dondaviduk

    dondaviduk

    Joined:
    11 Apr 2015
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    Location:
    Durham
    Country:
    United Kingdom
    Hi,
    I have a Baxi 10HE boiler and since yesterday the pressure is shooting up to 2.5 bar when I turn on any hot water tap, until it eventually jumps to 3bar before tripping out the boiler [30C & 40C lights flash together].

    the normal pressure when system is reset is 0.9 bar approx. I don't like to increase this in case I cause any further problems.

    I have bled the radiators and the heating system seems to work ok.
    Does anyone have any ideas to what the problem could be, or some things that I can check myself.
    thanks in advance
     
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  3. steve32

    steve32

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    Location:
    Essex
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    Was the pressure in the expansion unit checked when it was last serviced
    If not it needs checking have a look at the FAQs
     
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