Please identify this boiler noise

[bsr]

Hello

This is a Greenstar CDi, working well. Can you identify this noise - is it pump or fan? Does it suggest that something is about to fail? It didn't happen when the engineer came to service last month.

The boiler has the old electrodes with a glass plate - the heating engineer suggested replacing this in spring when he's quieter. I'm wondering whether this needs to be addressed at the same time, or whether it's just something like a worn fan bearing that could go on for years.

https://files.fm/u/2y48wtk6c

Thanks

bsr

 

[bsr]

Anyone?

 

[muggles]

Impossible to say from that video, it's too short. Try doing it again, but make it 30 seconds long and have the flap down so we can see what's going on on the display