Hi,
A couple of months ago I noticed that the vent pipe which runs into my loft tank had started continually running hot water whilst the system was running.
I have a Grundfos 15-50x18 pump which has 3 settings, at the time the pump was set to 2. When I turned it down to 1 the water ran out the vent pipe faster and when I turned it up to level 3 it stopped running – so I left it there and it seemed fine for a while.
Now it has started running again even on level 3. I have had the silver disc off the front of the pump and the spindle seems to be turning fine. I have been told that this is a bleed screw but it just slowly drips water when opened.
Generally the water and central heating seems to work otherwise, though I have occasionally had issues with the downstairs radiators not warming up, although that did seem to cure itself.
The boiler is a Glowworm MkII.
Does anyone know what might be the problem?
Thanks v much.
Mark.
A couple of months ago I noticed that the vent pipe which runs into my loft tank had started continually running hot water whilst the system was running.
I have a Grundfos 15-50x18 pump which has 3 settings, at the time the pump was set to 2. When I turned it down to 1 the water ran out the vent pipe faster and when I turned it up to level 3 it stopped running – so I left it there and it seemed fine for a while.
Now it has started running again even on level 3. I have had the silver disc off the front of the pump and the spindle seems to be turning fine. I have been told that this is a bleed screw but it just slowly drips water when opened.
Generally the water and central heating seems to work otherwise, though I have occasionally had issues with the downstairs radiators not warming up, although that did seem to cure itself.
The boiler is a Glowworm MkII.
Does anyone know what might be the problem?
Thanks v much.
Mark.