No hot water-central heating ok, worcester 350 combi boiler

[scottishjoe]

Hi,

I have an old Worcester 350 combi and although Central heating is ok, hot water stopped working last week.

When hot tap is turned a little warm/hot water is produced for maybe 10 seconds, but the demand light doesn't light and the burner does not fire up. I'm 90% sure the main driver board is ok and thought it could be flow switch? How do I test and what other parts do I check?

Thanks!!

Joe

 

[nickso]

probably flow switch.

if you dont have a multimeter, then bridge it out, with the mains off of course, and try it with the tap on.

 

[superdupergasman]

Does DHW pump run or Fan or is it just dead??