The Hayward Aqua Riie Main Printed Circuit Board (PCB) is the heart of your salt system. Without it, your system will no longer sanitize your pool effectively. In most cases, the Aqua Rite Main PCB will fail due to an electrical surge, lightning, or a brownout. PureLine has developed a new board to replace the original Hayward Aqua Rite Main PCB at a substantially lower price. This guide will show you how easy it is to replace the Hayward main PCB with a PureLine main PCB.