All radiators working but 2 upstairs need bleeding every 2/3 days???

[HelenW]

Hi There

I'm hoping someone can help me with a problem we've got. All our radiators work but there are 2 upstairs (out of 4) that constantly need bleeding, they work ok then need bleeding again within a couple of days.
I don't know whether this is relevent but I don't think the TRVs work on any of the radiators, someone at work told me they are probably clogged up and need to be taken off and cleaned??
Anyway i'm not too bothered about the TRVs atm, i'm more concerned with the radiators.
Can anyone help???

Thanks
Helen x

 

[SafeGasInstall]

you need a engineer to have a look ,could be blocked cold feed to your system .you have a open vent system dont you?

 

[HelenW]

Sorry but i'm a complete novice with all this, how do I tell whether it's an open vent system?
Helen x

 

[HelenW]

I've just had a look on the net and I think we do have one, ie tank in the attic and storage cylinder in an airing cupboard.

 

[SafeGasInstall]

What is a regular boiler? - Worcester, Bosch Group UK installer site

 

[SafeGasInstall]

enlarge the image ,does it look like your system?

 

[HelenW]

Hi there, that does look like our system, only the boiler is in the airing cupboard aswell as the cylinder and not downstairs.

 

[SafeGasInstall]

have you done any work to your system?

 

[HelenW]

No we haven't done any, except when we moved in there was an economy 7 heater in the hall (controller in the airing cupboard) that we removed.

 

[SafeGasInstall]

your best option is to get engineer out ,but you could go in the loft and have a look inside your small water tank ,and see if the bottom is full of sludge,you can turn off the water supply to it and then go and drain some water out of you central heating and go back up if the water is still in the tank then definitely is sludge up,then your option is to call engineer to power flush your system and cut and repair the blocked section .

 

[SafeGasInstall]

if you list your location some one from here could come and solve it for you Helen

 

[HelenW]

Ok, I think we'll get someone out at some point, I was hoping it was a simple issue to resolve but obviously not. Many thanks for all your help 🙂

 

[Centralheatking]

You might try putting sludge mobiliser in the little tank in the loft NOT the big one and leaving it there for a few weeks then see if it works better

centralheatking

 

[Billy Bob Bob]

agree with chk ,but you will need to drain a small amount of water out of the system first,you could (roughly) prove if you have a corrosion issue by (very carefully) the next time you vent set fire to the air but you have to be quick if it burns its nitrogen,a by product of corrosion if this is the case you need a de scale

 

[wheeto]

if it burns its nitrogen,a by product of corrosion if this is the case you need a de scale

Nitrogen doesn't burn, and I'm nt sure if it's a by-product of corrosion. Hydrogen will, and can be evolved by the acidic corrosion of higher carbon steels.

 

[Billy Bob Bob]

sorry meant hydrogen is this spotters corner??????????