Product Overview

The 523004Z motherboard is an OEM replacement circuit board designed for the IntelliChem chemical controller system. It restores full control functionality to legacy units by replacing the main logic board, helping ensure accurate chemical dosing, flow sensing, and reliability in the control system.

Ideal For

• Service technicians repairing an IntelliChem controller whose main board has failed.

• Pool owners with an older IntelliChem system experiencing logic faults, unresponsive menus, or controller malfunctions.

• Facilities seeking to extend the life of their existing chemical controller rather than replacing the entire system.

• Installations where retaining the existing cabinet, wiring, and sensors is preferred while upgrading the core electronics.

Key Features

• OEM Replacement Board – designed specifically for IntelliChem controllers, ensuring proper fit and compatibility.

• Full Logic Restoration – replaces the failed motherboard to bring the controller back to factory-spec operation.

• Cost-Effective Repair Option – less expensive than full control panel replacements while maintaining system integrity.

• Drop-In Installation – designed for direct replacement of the original board with minimal additional parts or wiring.

• Supports Legacy Systems – ideal for systems where sensors, wiring, and enclosures are still in good condition.

Customer-Facing Q&A

Q: How do I know if I need this motherboard replacement?
A: If your IntelliChem controller is no longer responding, showing error codes, or failing to dose chemicals properly (while sensors and wiring appear intact), a motherboard replacement may be required.

Q: Will this work with all IntelliChem models?
A: It is designed for the IntelliChem legacy controller series. Confirm your existing controller’s model and part number to ensure compatibility before ordering.

Q: Can I install this myself?
A: Yes, if you are comfortable with low-voltage pool equipment wiring. Always power off the controller, follow safety guidelines, and reference the service manual when replacing the board.

Q: Do I need to replace the whole controller cabinet?
A: Not necessarily. If the cabinet, sensors and wiring are in good condition, replacing the board alone is often sufficient to restore full functionality.

Q: Does this part restore software and functionality?
A: Yes—this replacement board restores the controller’s full logic, sensor inputs, flow verification and chemical dosing control, as designed by Pentair.