Washer/dryer repeating noise on start

[mxo]

I’ve just bought a new AEG washer/dryer. It makes a very loud recurring noise (every second) when I start it. The drainage pipe pulsates at the same time.

Then once the spin wash starts, the noise stops. It starts again during the dry cycle.

The appliance is integrated. It isn’t vibrating. This happens even when it’s empty.

Any ideas what this could be caused by?

 

[Justin Passing]

Lack of call to AEG to get it fixed! It's new - so...