Radiator Problem

[meatpie48]

I've had a problem in my Daughters bedroom with a Rad. Tried the tapping of TRV which seemed to sort it out. However, the rad in the bathroom has now gone stone cold. Not just the rad but at least 1.5 feet of pipework.

It seems that these 2 rads are working in tandem to drive me mental!. The other 2 rads on the 1st floor are working fine & I've bled everything.

I've had trouble with the bathroom rad but it was nothing that regular bleeding didn't solve (once a week, which is quite worrying as it seems to point to a leak somewhere),

Has anybody got any idea's?

Additionally I am running the original boiler which was in the house when I moved in as I cannot afford a new one at the moment. It's a Concord WRS (not sire of the model), it has been second to none & has only had one problem with relighting the pilot after a powercut!

 

[stem]

You could have air in the pipe feeding the radiators. With the central heating switched "on" and the hot water "off" try turning off all of the radiators except the problem two & open their TRV's full. This will put all of the force of the pump on the problem two (you may have to do this one at a time), which may clear it.

Air in a system does not necessarily mean a leak. Often it is bad system design, or the water in the radiators does not have corrosion inhibitor in so the steel corrodes and gives off gas which has to be vented. The corrosion process also creates a black sludge which can also cause problems. If this is the case, it will need to be cleaned/flushed. there's plenty of info on here if you try a search.

 

[bengasman]

It sounds like a combination of poor design/installation, and longterm lack of maintenance.
The only solution for faulty piping is to redo it in the correct way. The lack of maintenance will have lead to corrosion and all the damage related to that. The only way to tackle that is systematically checking all the components and servicing/repairing/replacing as needed.