this morning the boilker wont fire up at all when water taps are open, ch is still fine. its a vailant 282/1e and this problem only occurred a few days ago
pls any ideas would be much appreciated
have a vaillant combi, recently turn hot water tap and boiler wont turn on until a second tap is opened, checked pessure which is at 2 bar (1 bar normally), ch is working fine, oiler is 3 years old and serviced every year