One Cold radiator

[mowgley1979]

Hi everyone

Wondering whether anyone could help me!! Tried everything!!!
I flushed my system out, water running clean.
All rads balanced and red hot apart from the last one in the chain.
The rad hot at top but gets gradually colder as you get further down.
Both valves fully open.
Do i need to replace the radiator?

Any help would be appreicatated

 

[Bahco]

Turn all rads off apart from this one and see if it gets hot all the surface. If it does you know it is not blocked.

If not, check valves are allowing full passage of water. You may need to properly balance system , details in reference section above.

 

[martwall]

Just a thought. try turning your pump up a notch.

 

[deefadog]

I had this, inlet pipe to the last radiator was boiling, but it had the same syptoms as you have, found out it was the pump, not strong enough to pump the last one, run out of steam is it were

Swapped to a combi now and all is fine

 

[mowgley1979]

cheers everyone for your help!
Sorted now!!!
Ended up taking rad off and flushing out not much sludge in, must have been a air lock