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  1. L

    Grants combi boiler firing but no DHW or CH

    When the tap is run, the boiler fires. I don't know if the pump runs (how can I tell this?). It doesn't get hot which I think it previously did when everything was working fine. The funny thing is when I turn the heating on the boiler doesn't fire.
  2. L

    Grants combi boiler firing but no DHW or CH

    When I open the outer casing and feel the actual boiler it is hot but when I run the tap it is cold water coming out. The system pressure is correct - 1.5 bar. I thought it might be the pump, it there a way of proving that before i buy a new one (it was only replaced around a year ago)? The...
  3. L

    Grants combi boiler firing but no DHW or CH

    It is definately firing for DHW but not for CH.
  4. L

    Grants combi boiler firing but no DHW or CH

    I really hope someone can help. My 8 yr old Grants combi boiler is firing when a tap is turned on and is getting hot to the touch when I open the top up but no hot water at all is coming out. The pipe feeding to the pump seems to be getting hot but the actual pump isn't. Please help.
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