Combi boiler pressure raising

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  • mwindsor
    • Oct 2013
    • 1

    Combi boiler pressure raising

    My Worcester Combi pressure gauge goes from 1.5 up and above 3 when running the central heating, is this normal / safe or what could be wrong
  • JimNoble
    Automated Home Jr Member
    • May 2005
    • 14

    #2
    Failed expansion vessel maybe? Best get a heating engineer in to service it...?

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    • toscal
      Moderator
      • Oct 2005
      • 2061

      #3
      Should be below 3 and at about 1 when not working. Could be your pressure relief valve thats not working. Have you bled the radiators recently. This may help to reduce the pressure in the system.
      IF YOU CAN'T FIX IT WITH A HAMMER, YOU'VE GOT AN ELECTRICAL PROBLEM.
      Renovation Spain Blog

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