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Worcester bosch boiler 35cdi. Hot water initially comes hot,then cold and then cycles hot and cold. Water pressure OK. Lights on the boiler seem normal. Any ideas?

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SOURCE: My Worcester Bosch 35cdi boiler

35 cdi worcester combi about 3 years old,heating not working,hot water works fine.It's been serviced not long ago.Room stat turned up and trv's ,but boiler want fire up,there's power to the boiler and the room stat the built in time clock is switched to on, but still nothing. do you think it could be the diverter valve, when i got there it was flashing SE which mean's it needs a service,cleaned the heat exchanger and burner with the proper worceter brush etc then re set boiler with technical, they also said it could be the built in clock and told me to disconect it, and just use the heating stat to control it.It still want fire.

Posted on Oct 09, 2009

burty681
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SOURCE: need to know how to

its the vavle 3 one in from the left its a 15mm pipe and there will be a iso vavle what you can turn with a flat point screwdriver and that will turn off the main water to the boiler these are the manual
http://www.worcester-bosch.co.uk/homeowner/literature/discontinued-boiler-literature/discontinued-gas-boiler-literature/240-bf-discontinued-december-1997-literature

Posted on Jan 23, 2011

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Need to know how to switch off hot water by combi boiler worcester bosch 240 to be able to fix leak on pipe downstairs


its the vavle 3 one in from the left its a 15mm pipe and there will be a iso vavle what you can turn with a flat point screwdriver and that will turn off the main water to the boiler these are the manual
http://www.worcester-bosch.co.uk/homeowner/literature/discontinued-boiler-literature/discontinued-gas-boiler-literature/240-bf-discontinued-december-1997-literature

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My Worcester Bosch 35cdi boiler is flashing temp then backwards t forwards t, whats wrong with it.?


35 cdi worcester combi about 3 years old,heating not working,hot water works fine.It's been serviced not long ago.Room stat turned up and trv's ,but boiler want fire up,there's power to the boiler and the room stat the built in time clock is switched to on, but still nothing. do you think it could be the diverter valve, when i got there it was flashing SE which mean's it needs a service,cleaned the heat exchanger and burner with the proper worceter brush etc then re set boiler with technical, they also said it could be the built in clock and told me to disconect it, and just use the heating stat to control it.It still want fire.

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