Help - freezing to death with radiators not working

[harris48]

Can anyone please help!!

I have 3 radiators (out of six) that are not getting warm at all. It seems like the 10mm micro bore pipe to these radiators are blocked up with sludge. I need some advice on how to drain the system (I have a primatic system in my bungalow which is heated with a flue boiler). I want to replace the micro bore pipes but unsure how to drain the system down.

Do I drain as normal from a radiator

or do I need to freeze the pipes.

My main concern is if I drain the system down will it affect the bubble in the primatic system that separates the hot water from the heating.

Also how do I refill the system? With the cold snap that is expected would like this fixed asap.

Any advice would be most apprecaited

 

[chrishutt]

You seem to be making a lot of assumptions about what is wrong. Would it not be better to carry out some tests to try to determine what the problem is? It might be something quite simple.