Worcester Bosch 532/i Combi Boiler?

worcester bosch 532/i boiler. when the hot tap calls for water the boiler runs ok heating up the water to the correct temp then after a few mins something causes the boiler to stop heating the water and it starts to run cold. Any ideas ?
Roger, October 2023


done
This looks very helpful:

https://www.justanswer.com/uk-plumbing/7zse1-hi-rd-532-british-gas-boiler-worcester-bosch-the.html

Don't forget the annual service!

Djdju, October 2023
link Click here to see other fixes for Worcester.