i've drained my system and come to refil it opened all rads starting at the bottom and working my way up and i still can't get water in my system. think i have a air blockage but don't know how to solve it. anyone got any ideas for me :(
Check the ballvalve/filling loop is passing an adequate amount of water into the system.
If the bottom rads have filled up; but you cannot get upstairs to fill; try running the pump to agitate the water and free any air - Check your airing cupboard (If you have one) for air legs on any key flow and a return pipes.
If no rads are filling up; it's likely you have a blocked or partially blocked cold feed - Plumber requried.
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