Hi
Just fired up my central heating and having problems with it not heating up all the rads properly. I have drained the system and refilled it and bleed all the rads. Fired up the heating and only have 1 rad upstairs which is hot the other 3 Luke warm and 1 cold upstairs and the 3 rads downstairs cold. Can't hear if there is any air left in the system so I'm stratching my head and would like any ideas of what it could be. I have a potterton neatheat 16/22 boiler
Looking forward to any help