This is a kit that contains a replacement flow sensor paddle with retainer pin as well as the rubber o-ring to repair the water flow sensors on the Bestway family of inflatable hot tubs which include the Coleman and Lay-Z-Spa brands. Failure of the paddle will cause your pump/heater unit to display E02. There are a number of things that can cause the E02 error and failure of this part should be confirmed before purchasing. The o-ring will save you from leaks around the flow sensor.
Description
This kit contains both the replacement magnetic paddle, the paddle retainer pin and a replacement o-ring seal for the water flow sensors used in the Bestway, Coleman and Lay-Z-Spa brands of inflatable hot tubs. If your pump/heater unit is displaying an E02 error and you find that your magnet is rusty due to the plastic cracking or other things like the one to the left, you should replace it with a new one as it is the most likely cause of your E02 error. The fully assembled flow sensors are selling for between $50 and $75. Why spend all that money when you can repair this yourself. 
The part you are buying is a 3D printed version made from ABS plastic with the magnet completely sealed to prevent it from being exposed to the water and rusting yet again. You also receive a high quality replacement silicone o-ring to replace your worn one under the cap. Also, If your pin is broken, no need to worry due to popular demand I am now including a replacement paddle retaining pin in every kit.
John Fulton (verified owner) –
I am on my 5th year with my saluspa. Last year replaced all gaskets and pump impeller. This year got the E02 error. Tried everything and even though there was flow I was still getting the error. Doing a google search found this site and ordered the flow sensor repair kit. Ordered on Monday and was at my door today. Took 10 min to replace and now my hot tub is running great. So glad I could find people like this that share there parts so other people dont have to buy a new tub or pump.