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  1. J

    Heating sort of OK but no HW

    Hi Hopefully someone can help me with this. I have an Icos M3080 condensing boiler with S Plan open vented configuration and gate valve in the bypass circuit. My problem is when I require just HW (HW valve open and CH valve closed) the boiler fires and quickly (within 30secs) cuts off...
  2. J

    I think I've got a leak!

    Hi, The level in my header tank is normal, but there is a constant drip from the ballcock. If I push the ball down and fill the header tank by an extra inch or so then the dripping stops, but the next day the levels back to normal and the ballcock is dripping again. I've checked all the...
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