"ab" mum@mum wrote in message
et...
Our central heating radiators on the ground floor have one by one stopped
getting hot.
They have all been taken off the wall and been flushed out with water, but
this hasn't
made any difference. We have mircobore copper piping, we also have a combi
boiler.
The Radiators upstairs always get hot. The central heating system is about
30 years old.
The combi boiler is about 10/11 years old. Does anybody have any idea what
the problem is,
and how we can resolve it.


Does the system have a header tank, maybe in the loft or above the boiler,
and is it filling properly?

If no to the first question, then how is the water replenished in the
system?

After you are re-connecting the radiators, are you bleeding all the air out
the system properly?

If the answer to question two is a fill loop from the mains water supply,
then are you topping the system up to its full pressure after you have bled
the air from each radiator?

Does the boiler activate properly when you demand hot water?

I could go on asking questions, but these questions need an answer first,
before we can give any type of advice on what could be wrong. And I'm sure
others will be along with more questions once you have answered these ones.

Please give more info' on this please. Thanks.