Hi, I`ve had my Worchester CDi 35 for 1 year with no problems, runs great however last month I`ve been having to top up the water. Under normal conditions the gauge reads 1.5bar and under normal working conditions rises to 2bar then returns to 1.5bar on idle however I`ve had to top up once a week I was advised to check red tank ?? ie shredier valve which I did air came out no water what else could there be wrong. There is no evedence of any leaks in boiler or pipework unless there is a leak under the floor ?? but the system has been fine for the past year, any advice appreciated.

Alan McCormick, February 2008

check the prv thats the copper pipe from boiler out through external wall (like an overflow pipe) has that been dripping.
if not a leak in the pipework under floor.

hi-spec plumbing & heating, February 2008