Thanks to all for your help. So it looks like I will have to replace the diverter valve. I have only just replaced the diaphragm about 3 months ago, so hopefully this will be ok to transfer to the new one.
hi, thanks for the responses, but in addition to the reset button, there also seems to be a problem, when the hot tap is turned on, the water does not get hot, but the CH outlet pipe gets hot even though the CH is turned off.
thanks
Hi, I am hoping that someone may be able to help. I have a WBosch 240 combi, the boiler has had to have new diverter valve diaghram and sleeve coupling, but that is all in 11 years. It has just developed a fault where the reset button has to be pressed at least once per day. Has anyone any ideas...