I have a Plan C central heating system.
Currently I am getting central heating ok, but no hotwater.
The pipe from the boiler to the hot water tank (middle) gets hot, but the output pipe from the tank (bottom) to the motorised valve, and back to the boiler, stays cold - indicating no flow??
I have checked the mechanical operation of the motorised valve, and it works, also I have checked the operation of the valve via the tank thermostate, and this is also ok.
Any help please.
