Furthest away radiators not quite boiling....

[shavy65]

Hi, any help appreciated.

I`ve got a Worcester 28i RSF combi boiler, approx 12 years old. Boiler in good working order (I think!), I`v based this on fact hot water is fine and most heaters are nice and hot. Problem I`m finding is the few rad`s furthest from the boiler are not nearly as hot as the ones closest the boiler.
I`ve ensured system is def not air locked and properly bled, and boiler is `man` enough to cover my 8 rad`s in my house according to a plumber. Also the water pressure is healthy between 1.8 - 2.3 bar. Can`t think of any other relevant details....any advice?

Thanks guys

 

[shavy65]

Also, the system has also been balanced within the last 6 months apparently!
Another thing I checked was that the thermostatic valves were worked properly and not sticking shut.

 

[Armo74]

Turn the good rads off if the bad ones get hot I would suggest another go at balancing.

 

[shavy65]

Cheers, I`ll try that. Is there any way I can tell if my boiler is heating up the water to the required temperature? I wondered if the temp might be too low, even though I have the dial on the front turned up to #4 :\