we have no hot water from our worcester bosch combi boiler, the water is only teppid.The heating works ok its just the demestic water supply.Could the problem be the diverter valve,this is a repeat question.The boiler is a 280 RSF

John Thompson, March 2007

Had the same problem.

One guy came to fix it and added a bit of cardboard between the switches so that even a small change in the diverter valve turned the water on.

This spark of genius lasted about a week.

Options are a new diverter valve, or a new diaphragm if you can re-build the existing valve.

Jon, April 2007

poss diverter valve diaphragm split.

hi-spec plumbing, March 2007