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Radiators Wont Heat Up Since New Pump Installed

Postby secret79 » Tue Oct 15, 2013 5:19 pm

heating was working 2 to 3 weeks ago but recently it stopped working, turned out the pump had stopped working, i changed the pump but since then i can only get heat to 2 maybe 3 upstairs radiators and cant get any heat to the downstairs at all, does anyone have any idea what has happened or what i have done wrong?
all the rads have been bleed,
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Simply Build It

Postby proptech » Wed Oct 16, 2013 9:50 am

Need to know a bit more about your system. Is this an open vented system or pressurised ? Are there any motorised valves ? Is the hot water side gravity or fully pumped ?
Exactly what did you do to replace the pump ?

It could be as simple as air caught in the pipework (not the radiators) and there may be a release valve on a high point on the pipework, but more info req'd.
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