Yes i've checked as best as I can, it's awkward to get too & I can't really see into the system. There is deff water in there, how much i'm not sure. If it's any help the bottom half is hot but the top half is cold.
Hi
I have put the screwdriver next to the pump & all I can hear is like a vibration sound but it does stutter usually every 7 or so seconds. It's deffinately not free flowing.
Hi :D My problem is the central heating. I can get hot water fine but no heating. I tried bleeding the radiator upstairs first nearest the cylinder & this was full of air. I could feel the radiator getting warm so I thought i'd solved the problem. However, none of the other radiator were...