i need help to get hot water without central heating on?

i can only get hot water when i put the central heating on otherwise no hot water...can someone please advise me.thank you... worcester bosch 240 combi rsf
mark, March 2006


done
brought a diverter valve from (b e s ) phone number 01213226400...there ref dvde1.. came next day £35.00 with all washers aswell pig to fit

andy, August 2006
I have had the same problem, only hot water when heating is on! Diverter valve £90 from local plumbing parts but £ 50 from eziparts couldn't wait, pig to drain & fire up after but deffo the cause, diaphragm was split. Symptons sneak up on you but if you only get hot water when heating is on then diverter is yer man!

tom, April 2006
link Click here to see other fixes for Worcester 240.