Product Overview

The Pentair 520659 Universal Motherboard is a genuine OEM replacement control board designed for EasyTouch® Pool & Spa automation systems. With support for four auxiliary outputs, this motherboard enables homeowners or service technicians to manage equipment such as pumps, lights, heaters and water features with full integration. It restores automation functionality when the original board fails or becomes obsolete, helping maintain optimal control system performance.

Ideal For

• Pool professionals replacing a failed main board in EasyTouch control systems and restoring full automation functionality.

• Homeowners whose EasyTouch panel is unresponsive, showing error codes, or has lost auxiliary control features.

• Installations where the cabinet and wiring remain intact but the motherboard must be replaced to avoid full system replacement.

• Service routines aiming to maintain automation uptime and preserve investment by using OEM parts.

Key Features

• OEM-Certified Replacement – designed specifically for Pentair EasyTouch systems to ensure proper compatibility and performance.

• 4 Auxiliary Outputs – supports control of up to four additional devices (e.g., pumps, cleaners, lighting circuits).

• Direct Fit & Drop-In Design – installs in existing EasyTouch cabinets using the original footprint and wiring harness.

• Restores Automation Capabilities – brings back full pool and spa feature control without changing major components.

• Durable Electronics – built for outdoor pool equipment environments, engineered for long-term reliability.

• Cost-Efficient Repair Option – rather than replacing the entire control system, replacing the motherboard provides major savings.

Customer-Facing Q&A

Q: How do I know if this board is the right one for my system?
A: This board is intended for Pentair EasyTouch pool & spa automation systems with up to four auxiliary ports. Confirm your current board number or system model before ordering.

Q: Will I lose any features by replacing the board?
A: No — replacing with the correct OEM motherboard restores full automation features and functionality of your original system.

Q: Is the installation difficult?
A: It’s a technical task suitable for a qualified technician. Ensure power is disconnected, wiring is noted, and the cabinet cover is properly secured after replacement.

Q: Do I need to upgrade other parts when I install this?
A: Not necessarily. If your cabinet, wiring harness and peripherals are in good condition, only the motherboard may need replacement.

Q: Will replacing this board improve my system’s performance?
A: Yes — it restores full automation control, improves reliability, and ensures any faulty automation issues stemming from the board are resolved.