| Denise McDonald 2005-06-16, 2:28 pm |
| the auto air vent is probably closed or jammed. It looks like a small brass
bottle about 35mm diameter by about 50mm high with a schreder valve cap -the
same as on your car tyres- or plastic screw on top. Loosen the cap or screw
and leave it loose. Usually found on top of the pump or at side of boiler.
If it's jammed you can bleed it by slackening a nut at the heat exchanger or
by removing the big screw on the front of the pump.
Even if the vent is jammed, once the boiler is running ok it should be fine
until next drained.
"Graham Keeble" <graham@keeble81.freeserve.co.uk> wrote in message
news:d75lid$jfl$1@news8.svr.pol.co.uk...
quote:
> Help needed please!
>
> Recently I completely drained my combi boiler central heating system so
> that
> I could replace radiator valves. After re-pressurising the system,
> bleeding
> all the rads then re-pressurising again I turned the system on only to
> find
> the pump was making a really loud noise and was running hot. Also the
> heating was not getting very warm. My only idea is that as the boiler is
> at
> the highest point in the system it is full of air and is trying to pump
> air
> hence the overheat. Does this sound valid and if so how can I resolve???
>
> Regards
>
>
|