I drained down my rads to add another, and have refilled the system.
I put the boiler into test mode 0 (CH and DHW bleeding) instead of 6 (filling).
The rads are all working fine, and warming up, but I open the HW taps and there is just no flow at all - nothing.
I had this happen last time I drained down and re-filled, and cannot remember what I did to cure it?!?
How and why does the boiler prevent any flow to the taps?
Cheers.