I drained the system at the weekend to remove a radiator - all went smoothly.
I cleaned out the ch tank in the loft which was pretty dirty. Lots of black sludge. Also cleaned out the magnaclean which had more of the black sludge.
When I refilled the system it filled slower than I expected (took over an hour), but I bled the system from bottom to top and the CH and HW all worked. I have bled again over the week.
Now six days later the HW doesnt heat unless the CH is on.
Any advice?
I cleaned out the ch tank in the loft which was pretty dirty. Lots of black sludge. Also cleaned out the magnaclean which had more of the black sludge.
When I refilled the system it filled slower than I expected (took over an hour), but I bled the system from bottom to top and the CH and HW all worked. I have bled again over the week.
Now six days later the HW doesnt heat unless the CH is on.
Any advice?