How can I fix my hot water?

My Halstead "High Ace" combi bolier is working fine for heating but does not register when a hot tap is turned on therefore no hot water comes out. Is there anything I can do myself to fix it or should I call a CORGI plumber?
Paul De'Ath, December 2007


done
Omg you just saved me a fortune with this answer. Thank very much :)

sean, December 2007
...and try pressing the red button on bottom of the boiler (overhead reset button). Didn't work for me, though.

AndrewRH, December 2007
Search this board for other postings on exactly this same topic! Seems a common problem with Halstead Ace High (including mine).

AndrewRH, December 2007
link Click here to see other fixes for Halstead.