Tapping from boiler (not moving pipes) from outside flaps

[sygboe]

Hi,

wondering if anyone knows about this problem.
My combi boiler is about 3 years old, and works fine.
only there is quite a loud tapping noise coming from the outlet from outside.

I think it's the flaps to stop the wind blowing in to blow out the pilot light. as the noise seems to match the wind.

It's just very annoying and quite loud and can be heard in almost every room of the house, so i have to turn it off at night or the noise is too annoying. like someone just tapping a ruler against the door all night.

is there a way to stop or reduce this?

thanks

 

[kevplumb]

make / model

 

[sygboe]

it's a 'Heat Line Vizo'
Vizo 24/28 Condensing wall mounted combination boiler