Unable to bleed radiators

Boutya · 11 Oct 2005

After draining the CH system and fixing the faulty radiator, I am ubale to fill CH backup again. When I try to bleed any of the radiators no air comes out.

Can someone help ?

Nige F · 11 Oct 2005

1-look for a small "header" tank in loft

with water in and ballvalve filling it

Boutya · 11 Oct 2005

Header tank is full

Nige F · 11 Oct 2005

OK...if there`s a motorised valve or 2 try moving the lever that sicks out the side, and hooks.this holds valve(s) open...vent the pump and check it`s spinning...threads on this subject

look for small air bleeds on "stalks" in airing cupd.

open + see.

ArtfulBodger · 11 Oct 2005

Did you check that the header tank had emptied when you drained the system?

ollski · 11 Oct 2005

blocked cold feed, try tapping the tee where the feed from the tank joins the system pipework, failing that push a hose up the vent pipe as far around the corner as possible and then hold the other end tight over where the ball vale fills, then backfill the system from the ball valve. You should then be able to bled the rads a bit, then do it again, and again etc.

Boutya · 12 Oct 2005

Eventually was able to bleed all the radiators.

However, when I switched heating on,upstairs radiators only got hot,down stairs still cold

Pump seems to be working ok

diynot

If you need to find a tradesperson to get your job done, please try our local search below, or if you are doing it yourself you can find suppliers local to you.

Select the supplier or trade you require, enter your location to begin your search.

Are you a trade or supplier? You can create your listing free at DIYnot Local

Unable to bleed radiators

Similar threads