You should get a brand new submersible pump installed with no extra money exchanged. The submersible pump will be taking back to the supply house where the submersible pump was purchased. The supply house will then send the submersible pump back to the manufacturer and they will determine the cause of pump failure. The pump manufacturer will then contact the supply house and tell them whether or not that the submersible pump warranty is voided. Pump installer will then contact you.

Lucky for you most pump manufactures have a constant pressure system so they're not going to void your warranty.

Your warranty pump date will go by the original installation date for any future warranties caused by your constant pressure system.