Betacom 24 boiler problem

[Jfog]

My hot water is only working when the central heating is on so we have to have the radiators on the have hot water.

This is only a recent problem as previously the hot water would come on even if the central heating wasnt on.

 

[45yearsagasman]

Classic symptoms of a failed diaphragm in diverter valve.Spindle not being pushed out far enough to operate microswitch assy.Easy and cheap to repair.Diaphragm kit is available as a spare.If you have the servicing instructions details are in there.Best left to a Pro.