Here for sale is a Watkins silent flo 5000. We have recently moved our hot tub and when turned back on has started making a whiring noise. We have been told that it has potentially come out of balance if that’s what the problem is so could be an easy fix or not. If reusing 2 connectors just need refixing to the cables. It is fully working just makes a noise so is being listed as spares or repairs so please be sure before purchasing. These are £300 new so may be of use for someone.
eBay