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  1. M

    water pump. causing header tank to overflow?

    Sorry. Ok, then lwt's have a look! How high is the vent pipe above the water level in the small tank before it bends over and into ir? Also what is the pump speed set too? Also how far is the pump from the small tank water level approx? Also does this happen whenever hot water OR...
  2. M

    water pump. causing header tank to overflow?

    yes the overflow for the header tank that is going out of the wall onto my back bedrooms roof, it is not overflowing out of the tank yet, it still has an inch and a half before it reaches the top of the tank it is the header tank and not the cold water tank. the cold water tank remains at the...
  3. M

    water pump. causing header tank to overflow?

    it is not overflowing unless it is heating the water. but yes the water still flows into the header tank with the valve closed and the hot water on. it doesnt seem to flow with just the heating on. does this help?
  4. M

    water pump. causing header tank to overflow?

    yes turning the valve off stops the hot water flow through the tap downstairs
  5. M

    water pump. causing header tank to overflow?

    there are 2 pipes in the airing cupboard with red circular handles one is at the back behind the hot water tank the other rund upwards to header tank i presume header and cold water tank have the same in pipe for cold water but two seperate feeds i presume this is normal?
  6. M

    water pump. causing header tank to overflow?

    header and cold water tank are both on boards in the loft but the water tank is larger than the header tank so is higher. i'm sorry but i dont know what f/e or cws are?
  7. M

    water pump. causing header tank to overflow?

    i know that bit doesnt make sense but that is what it did i only tried it once but i had water and heating off when i went to bed and i turned it off until i had checked the level the morning after, that was before i replaced the ballcock as a precaution but the problem still persists so i...
  8. M

    water pump. causing header tank to overflow?

    when i bought the house in sept 2008 pump was leaking and a new pump was fitted in the same way as the previous pump. i think the overflow had been leaking before the pump was fitted as there was damage to the ceiling below the header tank from water. it will overflow overnight even when the...
  9. M

    water pump. causing header tank to overflow?

    my header tank has been overflowing for atleast a year and a half. i have tried many different things but to no avail. i have a back boiler in my dinning room and central heating and hot water run through this. my hot water tank is in a back bedroom with the pump next to it running vertically...
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