not all the radiators are getting hot?

crispeater

my ds had a broken window in his bedroom and i'd stuffed it with a towel until i got it fixed on monday thinking it was this making the house cold. now of course its still bloody cold and i've noticed that not all the rads are getting hot. i brought a radiator key thinking they needed bleeding to find that i only have 1 radiator that i can do this too and its a hot one!!

the radiators appear to have flat tops which i dont appear to be able to bleed i can undo some of the flat tops but i cant see what to do from there. i noticed my sons radiator gets hot at the bottom but not at the top? does anyone have any suggestions?

thank you

plumb1_2

You should be able to bleed/vent each rad, try looking @ the back of the rad top , there could be a small plastic cover, covering the vent, not all are on the sides.

flang

You have air in the system which can be bleed by opening the tap at the top.
Once you have bleed your system check the pressure is correct on the boiler as sometimes it drops.