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What causes a Vokera boiler pressure dropping regularly

  • 28-01-2015 5:50pm
    #1
    Registered Users Posts: 1,357 ✭✭✭


    Hi , as the title suggests my vokera boiler (11 years old ) pressure drops to zero on average once every 4-6 weeks. I top it back up to 1.5 bar but it will drop again . I'm in an apartment , there is no water leakage that I can see .
    What is the most likely cause of this and roughly how much could we be talking to repair it.
    Thanks for reading.


Comments

  • Registered Users Posts: 12,695 ✭✭✭✭Dtp1979


    hawkelady wrote: »
    Hi , as the title suggests my vokera boiler (11 years old ) pressure drops to zero on average once every 4-6 weeks. I top it back up to 1.5 bar but it will drop again . I'm in an apartment , there is no water leakage that I can see .
    What is the most likely cause of this and roughly how much could we be talking to repair it.
    Thanks for reading.

    Have you a hot water cylinder? You coujd have a tiny pinhole in the coil


  • Registered Users Posts: 1,357 ✭✭✭hawkelady


    Yeah I have a hot water cylinder , a small one. Is that the only possibility this could be happening ?
    Funds are tight so I'm hoping it's not going break the bank to get it sorted. Thanks


  • Registered Users Posts: 12,695 ✭✭✭✭Dtp1979


    hawkelady wrote: »
    Yeah I have a hot water cylinder , a small one. Is that the only possibility this could be happening ?
    Funds are tight so I'm hoping it's not going break the bank to get it sorted. Thanks

    The pressure is going somewhere. If not a visible leak it could be out of your safety valve


  • Registered Users Posts: 1,492 ✭✭✭roy rodgers


    More than likely the heat exchanger is leaking slightly. Common thing with them boilers she coming to the end of its life.


  • Hosted Moderators Posts: 3,496 ✭✭✭DGOBS


    Have you a hot water cylinder? You coujd have a tiny pinhole in the coil

    Pressure wouldn't reduce to zero, usually you'd still have .1-.2 bar (single or two storey)


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  • Registered Users Posts: 12,695 ✭✭✭✭Dtp1979


    DGOBS wrote: »
    Pressure wouldn't reduce to zero, usually you'd still have .1-.2 bar (single or two storey)

    If it was in an apartment then it might have the combined cylinder and tank. The tank would be the same height as the boiler.


  • Registered Users Posts: 1,357 ✭✭✭hawkelady


    Hi , yeahs it's an apartment and the hot water cylinder is the same level as the boiler , and it does drop right down to zero .. Doesn't take much of a turn to get it back up to 1.5 bar though. The pressure is very strong.


  • Registered Users Posts: 1,373 ✭✭✭selous


    That's mad, I have a Vokera too, with the same problem for about 6yr, it used to fly up to about 4bar when on and down to 0 when off, but it was the pressure seal on top, that solved that it was brittle, but still have the pressure dropping fault, and top it too every 4-6weeks, im in a duplex, how odd is that.


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