I would have to honestly say no, as I have not found a good way to get ahold of Pentair for warranty support.
I started a warranty claim in late June for my robot. Easy enough to call them and talk to someone about the issue to get the claim started, but actually fixing it or replacing it has been impossible.
In my humble opinion, their warranty team just plain stinks. A total lack of understanding pool equipment, customer service skills, or follow up. Days and weeks would go by without a response or when I did receive one it was a lie. Still today, I have no repaired or replaced robot, and thank goodness it wasn't a more important part of the pool like you.
What worked for me was to first start the claim with the warranty department by phone. Have your serial number, and date of installation ready. They will follow up with an email with the claim number. I kept calling there until they would stop responding or call me back, then started blasting their main page with "contact us" and asking for anyone to follow up on the issue because the warranty department was not. After maybe a week, someone will get back to you by email, and then you have to be patient and communicate with them, but their follow up is terrible.
After about a month, I was able to find the supervisor of the "warranty admin" assigned to my case and make some progress. Still no robot, but at least there is progress now.
Hope you have better luck!