Glow worm Swift flow 80 Boiler Combination boiler?

The boiler only supplies hot water if the central heating is switched on. What can be wrong with it
Jass, September 2006


done
i have britony se 80 the problem is leaking even i switch off and the air pressure up to 3-4 can someone tell what"s the problem.thanks

tania chew, March 2009
faulty h/w flow switch.twin pass heat exchanger so when heating is on it will heat the water

scott, September 2006