Downstairs Radiators not Working

[neilhubbardz]

Hi, I posted a query on this subject a couple of weeks ago about injecting sludge remover into the radiators which I have now done & also put a rad valve with a drain off in place of the existing one. I turned the heating back on and bled the radiators but only the upstairs ones are getting warm - the others are stone cold. I've opened the valves up again (flow & return) so I'm stumped as to what has gone wrong. Any ideas?
Cheers
Neil

 

[seco services]

probaly airlocked in the drop down pipes from upstairs.

try shutting upstairs rads and running system

 

[bengasman]

Hi, I posted a query on this subject a couple of weeks ago about injecting sludge remover into the radiators which I have now done & also put a rad valve with a drain off in place of the existing one. I turned the heating back on ...

Has the cleaner been sitting in there with the boiler off?

 

[neilhubbardz]

Upstairs rads have trv's. I've put them on their lowest setting. Is that the same as turning it off completely?
Cheers
Neil

 

[seco services]

shut them to 0
the lowest setting providing the house is warmer than the lowest setting.

 

[neilhubbardz]

Hi, I've done that & downstairs rads are getting warm. Will I need to bleed them again if it's an airlock causing the problem?

 

[neilhubbardz]

Cleaner only sat with boiler off for 5 minutes.

 

[bengasman]

How long has it been in with boiler and radiators on?

 

[seco services]

let them all get hot then you can turn heating off bleed rads and re-open upstairs rads.

 

[neilhubbardz]

Seco Services you're an absolute star, thank you.

 

[seco services]