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Pressure dropping on boiler.

Discussion in 'Plumbing and Central Heating' started by 96mgb, 24 Dec 2014.

  1. 96mgb

    96mgb

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    Hey

    I have a worchester 35cdi 2 boiler. It recently got high pressure when I over filled it however I opened a radiator and drained it back to the correct level. (About 1bar). However now I keep finding that the overflow is letting water out and the pressure drops below 1 bar. It's a slow process but the pipe is wet.

    Any ideas how to stop it?
     
  2. Newboy

    Newboy

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    Sounds like the pressure relief valve is not seating properly - get a GasSafe engineer to check it and, if necessary, replace the valve
     
  3. ALCPlumbing

    ALCPlumbing

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    Does it drip constantly or only when you have the heating on? If the latter I would expect the problem to lie with a flat expansion vessel.
     
  4. DIYnot Local

    DIYnot Local

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