DIY Doctor UK DIY Forums

hi was wondering if anyone could possible help?

i got called to look at a back boiler with a pimatic cylinder in an old house the central heating is working fine however some rads are piping hot and others according to the owner have just stopped.
At first i thought they were air locked but no air and no water from the rads then i thought it was sludge but i removed a couple and no sludge clean as ought. i have a feeling its a really old one pipe system and may jsut need balancing however does anyone have any ideas plase

Hi Blink,

Yep balance it,but check pump also, speed it up,airlock, not spinning.
One pipe system - run a mile aaaaaaarrrrrrrrrrrrrgggggg