: hi i moved a radiator every thing fine, but now the radiators get red hot but no hot water comes out of the tap have you any ideas thanks
I'm experiencing the same thing this morning. It happened before when I drained the system. A plumber told me that there was an air lock and I fixed it by opening the drain on the bottom rad with my hose pipe on and not turning the header tank off. Flushing it through so to speak. You could try that. I am at the mo. Fingers crossed it works or it's the plumber in charging a fortune.