I have the same problem, "Drive Error: Pump has stalled". When I reset I can hear the pump try and engage briefly, then ... nothing". Hayward EcoStar SP3400 VSP. I'll try and PM Hayward on this too. My purchase date is April 2015. Hoping for the best! [Fingers crossed since how long can you go without pump working in the Fall in Phoenix? It's still 107F here .. yikes! I figured when I ponied up over $1K for my fancy variable speed pump it wouldn't exhibit what others have reported, like a funky PCB board? Well, no judgment at this point.
Update: Called Hayward after no response to email. Got "we're experiencing a high number of calls .." message and was on hold so long I finally gave up. Went to the Hayward support site and filled in the email form there. Received an immediate ack with a Hayward Case Tracking Number.
Went to see my Pool Shop people and was told Hayward had major problems with the Ecostar. They thought I would at least get a free replacement on the drive, but not the labor to install it. Finally got Hayward on the phone and the guy was great, he located my form email via the Tracking Number, and then sent me another form to fill out and forward to the dispatcher for Arizona. That lady assured me I'd be taken care of, but it was on a Friday and I'd have to wait until Monday for the repair folks.
Sure enough, early Mon AM I was texted, guy showed up midday, replaced the drive and charged me $120 for the labor. I'm pretty happy overall, thank God for this forum! Also, the things said about the revived Ecostar .. more noise and more ooomph are true. This thing lives more in Turbo Mode in each RPM setting. On 3250 RPM my aerator was practically reaching my chaise lounges on the other side of the pool! LOL.