Product Overview

The Pentair IntelliCenter® i5X Expansion Replacement Circuit Board (Model 523051) is an OEM control board designed to restore full functionality to IntelliCenter automation systems equipped with i5X expansion modules. This board controls additional relays, valves, lights, pumps, and auxiliary equipment—making it essential for pool owners who rely on expanded automation capability.

Whether you're replacing a failed board or refurbishing an existing IntelliCenter system, the 523051 offers a direct plug-in fit, professional reliability, and Pentair’s advanced automation performance.

Ideal For

• IntelliCenter systems using the i5X expansion module

• Repairing or replacing a damaged, unresponsive, or faulty circuit board

• Upgrading older modules to restore stable, full-feature automation

• Systems controlling multiple pumps, heaters, lights, and valves

Key Features

• OEM Replacement Board: Designed specifically for IntelliCenter i5X modules for guaranteed compatibility.

• Restores Full Expansion Capacity: Supports additional relays, circuits, and automated functions.

• Plug-and-Play Installation: Direct-fit replacement board with identical layout and connectors.

• High-Quality Construction: Built to Pentair’s strict standards for reliable long-term performance.

• Supports Advanced Automation: Manages lighting, valves, pumps, heaters, water features, and more.

• Diagnostic-Ready: Works seamlessly with IntelliCenter’s onboard diagnostics and monitoring tools.

• Stable & Responsive Control: Ensures fast communication between the main board and expansion circuits.

Benefits

• Cost-Effective Repair: Replace only the i5X board rather than the full IntelliCenter system.

• Reliable System Operation: Eliminates faults, glitches, and intermittent failures caused by faulty boards.

• Easy Serviceability: Designed for quick installation in existing expansion modules.

• Trusted OEM Quality: Ensures maximum lifespan and system compatibility.

• Restores Advanced Automation: Returns full control of lights, pumps, heaters, features, and auxiliary equipment.

Customer Q&A

Q: Is this board compatible with all IntelliCenter systems?
A: It is compatible specifically with IntelliCenter systems that use the i5X expansion module.

Q: Does this include the entire module?
A: No. This listing is for the replacement i5X circuit board only, not the full expansion enclosure.

Q: Can I install the board myself?
A: While installation is straightforward, Pentair recommends a licensed technician for safety and proper configuration.

Q: What issues does this part fix?
A: It resolves problems such as relay malfunctions, loss of auxiliary control, communication errors, and non-responsive circuits.

Specifications

• Part Number: 523051

• Product Type: Replacement Circuit Board

• Compatibility: Pentair IntelliCenter® i5X Expansion Modules

• Function: Controls extra relays, valves, lighting, pumps, and auxiliaries

• Installation: Direct-fit plug-in board

• Manufacturer: Pentair