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    Combi boiler hot water tap issue

    Banned
    I've got combi boiler which is running fine. It heats and produces hot water from all taps apart from 1. If I open up all the other hot taps for a short period then turn them of, the issue tap works fine for a while. It then ends up as a trickle and eventually stops. That would indicate to me that there's no blockage in the pipework, yet my research shows that it's not really possible to get an airlock on a sealed system. If the boiler is happily supplying hot water at all of the other taps it seems to indicate the boiler is functioning properly. To my mind it only leaves the tap being faulty, but I don't understand why it seems to work ok after all the other taps have been opened for a while, in fact it works ok all the time provided the other taps are on. Is the answer a faulty tap, or am I missing something.

    7 Comments

    Tap insert is faulty. It's stopping the water flow. Do you have a quarter turn ceramic or the rubber washer type? You can tell if it's a ceramic by the fact it only turns a quarter and no further. You will need to take out and get the part number if it's a ceramic and get the correct hot or cold replacement. They are different. They are not all the same to, so don't gamble on a diy store replacement fitting.

    Original Poster Banned

    wayners

    Tap insert is faulty. It's stopping the water flow. Do you have a quarter … Tap insert is faulty. It's stopping the water flow. Do you have a quarter turn ceramic or the rubber washer type? You can tell if it's a ceramic by the fact it only turns a quarter and no further. You will need to take out and get the part number if it's a ceramic and get the correct hot or cold replacement. They are different. They are not all the same to, so don't gamble on a diy store replacement fitting.



    I'm refurbishing the downstairs cloakroom where the problematical tap is. So if your 100% sure it's the tap the issue should disappear once the tap is replaced with a mixer one.

    I just couldn't get my head around how I can force it to work properly with all the other taps open.

    It's not a quarter turn type tap.

    Edited by: "cchopps" 1st Dec 2016

    all taps on less pressure 1 tap on more pressure and its forcing a broken washer up
    Edited by: "steevojohno" 1st Dec 2016

    Banned

    cchopps

    I'm refurbishing the downstairs cloakroom where the problematical tap is. … I'm refurbishing the downstairs cloakroom where the problematical tap is. So if your 100% sure it's the tap the issue should disappear once the tap is replaced with a mixer one. I just couldn't get my head around how I can force it to work properly with all the other taps open. It's not a quarter turn type tap.



    Faulty tap mate or you have an isolation valve that is turned/semiturned off.

    Original Poster Banned

    Thanks to everyone. Wayners gets best answer as first to reply.

    so I is fixed then

    Original Poster Banned

    muddassarsardar

    so I is fixed then



    I'll let you know next Tues/Wed. I'm due to get new cloakroom basin/tap installed then.
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