Hi Perfectionist
We have received the video and its hard to tell due to the quality what the fan noise is and if it is the fan or the noise of the water in the radiator
Please use the query you used when purchasing the system for any future correspondance this is constantly monitored by the 3xs support team, attachments can be sent to systemsupport@scan.co.uk
As the fan is turning I would suggest powering the system on and testing it out, the noise you are hearing may be due to the water flow, as the system has been in transit they can sometimes become unsettled and need running for a bit to get the water circulating.
Please test the system and unless the fan actually stops it will be fine
Regards
Ben