My quote: Problem I have and would change on the 2013- 250EX the 220volt for the water cooler should be hooked up to the main switch to turn the 220 volt pump on when the welder is turned on.
My fix since I had to open the case to take pictures of the HF. So this worked just fine now on weld on water cooler.
Click image for larger version.  Name: reconnecting wires.jpg  Views: 669  Size: 139.9 KB  ID: 9670Click image for larger version.  Name: switch cut blue wires.jpg  Views: 625  Size: 129.5 KB  ID: 9671