I think this thread should be emailed to the HSE as it proves why spares of any description shouldn't be sold to unregistered installers.
I went to a baxi bbu the other week never been serviced EVER spilling fumes he said,wouldn't stop using it so I went straight away and the heat exchanger was blocked solid with soot.He thought he knew better as he was a Health and safety officer.T**T could have killed his wife and two kids.
WHEN WILL THEY EVER LEARN???????
So you left it in that state!!??? Your having a laugh surely? that makes you as bad as the idiot that started this post, what happened to duty of care? that is ID and you should have done something, not walked away!