WB Greenstar 28i Pressure Problems?

Thank you for your advice. I was a little doubtful as the filling loop had three valves and they were all off, but followed it anyway and immediately on disconnection the pressure dropped. I bled off some water to return the pressure to 1.5 bar when cold. The pressure rose to 2.0 bar as expected during a four hour heating period but now appears after cooling to have returned to 1.5 bar.

I will continue to monitor it for a few days but my sincere thanks for your advice.

Supermart
December 2009

sounds like the filling loop/or integral link is passing. disconnect the external pipe on the filling loop and make sure no water is getting in. sometimes the filling loop can look turned off but still lets water through

pete
December 2009