h6w can i fix my saunier duval f23e boiler?

radiators keep getting hot when the hot water is in use even though heating is switched off at the main switch, i have had to resort to switching each radiator off at the valve. Any ideas? any suggestions would be most gratefully received!
dave gillespie, September 2007


done
hi dear i have a f23e the problem is hot water keep on n off. look like need more pressure .

asif, May 2011
HOW DO I WIRE A ISOTWIN CONDENS F35E BOILER

GRAHAM WENDEL, September 2007
reversing valve nedds replacing
get a pro
commonfault on saunier

kris, September 2007
link Click here to see other fixes for Saunier Duval.