On Fri, 11 Aug 2006 16:26:00 +0100 Senga wrote :
Ferroli Optima. Decided to check combi yesterday for water level. Pressure
was down below 2. Opened filler & let pressure rise to 2.5.

This morning turned on hot water but got none, checked pressure again & it
was down almost to zero, filled again & noticed overflow/safety release
valve was running outside & trickled away until pressure was almost zero
again.

Anyone who knows what my problem could be, everything was ok until I topped
up yesterday.

Why are you trying to run the system at 2.0. Except on a 3+ storey house, 1
would be normal.

From your description it sounds like the expansion vessel has failed.

--
Tony Bryer SDA UK 'Software to build on' http://www.sda.co.uk