{"product_id":"pentairwaterpoolandspainc_521319z","title":"Pentair PCBA Controller | IntelliChem® Chemical Controller | 521319Z","description":"\u003ch3\u003eOEM Replacement Control Board for IntelliChem® Systems\u003c\/h3\u003e\n\n\u003cp\u003eThe Pentair 521319Z is the OEM replacement PCBA (Printed Circuit Board Assembly) controller for Pentair IntelliChem® Chemical Controller Systems. If your IntelliChem controller is displaying faults, failing to respond to commands, or has suffered a board-level failure, this is the direct replacement control board for that system.\u003c\/p\u003e\n\n\u003cp style=\"background-color: #fff3cd; border: 2px solid #FFEAA7; padding: 15px; border-radius: 5px; margin: 15px 0; color: #856404;\"\u003e\n\u003cstrong\u003e⚠️ IMPORTANT: LICENSED PROFESSIONAL INSTALLATION REQUIRED\u003c\/strong\u003e\u003cbr\u003e\nElectrical control components must be installed or replaced by a qualified electrician or certified pool technician. The IntelliChem® controller operates on mains voltage. Do not attempt to service or replace this board without proper certification and with power fully disconnected at the breaker.\n\u003c\/p\u003e\n\n\u003cp\u003eThe PCBA controller is the central processing board of the IntelliChem® system, managing chemical dosing logic, sensor inputs, and output commands to chemical feed equipment. A failed or damaged controller board will prevent the system from regulating sanitizer and pH levels correctly. Replacing this board with the OEM Pentair part restores factory-programmed control logic to the IntelliChem® unit.\u003c\/p\u003e\n\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003ctable style=\"width: 100%; border-collapse: collapse; margin: 20px 0; border: 1px solid #ccc;\"\u003e\n\u003ctr style=\"background-color: #f8f9fa;\"\u003e\n\u003ctd style=\"border: 1px solid #ccc; padding: 10px;\"\u003e\u003cstrong\u003ePentair Part Number\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #ccc; padding: 10px;\"\u003e521319Z\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border: 1px solid #ccc; padding: 10px;\"\u003e\u003cstrong\u003ePart Type\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #ccc; padding: 10px;\"\u003ePCBA Controller (Printed Circuit Board Assembly)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background-color: #f8f9fa;\"\u003e\n\u003ctd style=\"border: 1px solid #ccc; padding: 10px;\"\u003e\u003cstrong\u003eFits System\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #ccc; padding: 10px;\"\u003ePentair IntelliChem® Chemical Controller\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border: 1px solid #ccc; padding: 10px;\"\u003e\u003cstrong\u003eQuantity Included\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #ccc; padding: 10px;\"\u003e1\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003ePro Tip\u003c\/h3\u003e\n\u003cp\u003eBefore ordering a replacement control board, confirm the fault is board-level and not caused by a failed sensor, wiring harness, or power supply issue — these components are serviced separately. Match the part number 521319Z to the label on your existing board before purchasing. Have a certified pool technician perform the swap with power fully isolated at the breaker panel.\u003c\/p\u003e\n\n\u003c!-- wft:processed:manual:2026-04-06 --\u003e","brand":"Pentair","offers":[{"title":"Default Title","offer_id":53962258350355,"sku":"521319Z","price":677.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0920\/0687\/5411\/files\/pentair-pcba-controller-intellichem-chemical-controller-521319z-1.webp?v=1776895188","url":"https:\/\/poolaroo.com\/products\/pentairwaterpoolandspainc_521319z","provider":"Poolaroo","version":"1.0","type":"link"}