worcester 24cdi
C/H working fine.
HotWater will only fire up with kitchen H/Tap on full blast (wet floor).Turn tap down very slightly and the gas shuts off.
Jane J.M.

Jane M., August 2016

Looks like a well unerstood problem. If you had done a Google search for worcester 24cdi no hot water, you'd have found these:

http://www.newtonnet.co.uk/house/boiler/

http://www.diynot.com/diy/threads/worcester-24cdi-boiler-no-hot-water-but-cent-heating-works.50177/

http://www.boilerguide.co.uk/forum/boiler-central-heating-questions/worcester-24cdi-hot-water-issue-216/

Anon, August 2016