Can someone enlighten me ,our worchester greenstar 42cdi combi boiler lost some water preassure due to radiator leak. I turned the filling key to the lock position on the inlet valve before filling from the DHW inlet knob, however no water can be heard coming in allthough all isolating valves on both the DHW inlet and CH return connections are open. The boiler needs just little more preassure and heating works fine as well as water.
I have done this previously and do not know what the problem is ,could it be airlock?
I have done this previously and do not know what the problem is ,could it be airlock?