my boiler seems to have problem.
I am trying to refill it but i now can't remove the filling loop as the ch outlet leaks water despite valve being closed. Could there be a simple solution
should be a non return vale one end of loop and isolating valve the other.if a plastic black handle on iso valve,take screw out and take plastic head off thencheck with spanner that valve is deff closed.if still leeking,you ll need to drain system,get all water out then replace old loop with new one.
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