Warrior SE pumping water but not moving

Are the tracks moving but not getting traction on the bottom of the pool, or not even moving?

If you lift it out of the water and push the on button, will the track run? If so, can you stop the tracks with your hand. I had a very similar problem and here is what I found. In my case, I opened up drive unit and pulled the drive motor out. I unbolted the gear reduction drive from (planetary gear drive) from the motor itself. I found that the motor pinion gear was loose and spinning on the motor shaft. Unfortunately, Maytronics does not use a mechanical method of securing the pinion gear on the shaft, like a key way or a flat spot with a set screw. Instead, they rely on an interference fit, that requires the gear to be pressed on. Having dealt with Radio Controlled cars when I was young, I knew that this is a terrible way to secure a pinion gear. This may be good when everything is new and running smooth, but as the rest of the drive bearing, tracks, wheels wear down , they create extra stress that the interference fit can't overcome. As the pinion slips, it wears down the pinion gear inner diameter and it slips even more. In my case, I had an extra motor/ drive unit with a bad motor. The gear was still pressed on firmly, so I was able to transfer it over to my slipping motor assembly. I got another month out of it, before it all died when water continually leaked through the motor packing seal. I got 7 years out of it, so I guess I should consider myself lucky. I know have an Evo 614iq and remove it from the pool every use, unlike the Maytronics that I left in 90% of the time.