{"product_id":"hayward-fd-heater-bypass-cartridge-kit-fdxlbpk1930","title":"Hayward Bypass Cartridge Kit for Universal H-Series FD Heaters | FDXLBPK1930","description":"\u003cp\u003eThe Hayward Bypass Cartridge Kit (FDXLBPK1930) is the OEM replacement bypass cartridge kit for Hayward Universal H-Series FD swimming pool and spa heaters.\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\u003cstrong\u003eIMPORTANT: PROFESSIONAL INSTALLATION REQUIRED\u003c\/strong\u003e\u003cbr\u003eGas and electrical heater components must be serviced by a licensed pool professional or qualified HVAC technician. Do not attempt to service gas or high-voltage components without proper certification.\u003c\/p\u003e\n\n\u003cp\u003eThe bypass cartridge kit regulates water flow within the Universal H-Series FD heater, allowing a controlled portion of water to bypass the heat exchanger to maintain proper operating conditions and protect the heater from thermal stress.\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\u003eHayward Part Number\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #ccc; padding: 10px;\"\u003eFDXLBPK1930\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background-color: #ffffff;\"\u003e\n\u003ctd style=\"border: 1px solid #ccc; padding: 10px;\"\u003e\u003cstrong\u003eCompatible Equipment\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #ccc; padding: 10px;\"\u003eHayward Universal H-Series FD Heaters\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\u003eUPC\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #ccc; padding: 10px;\"\u003e610377073776\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003ePoolaroo Pro Tip\u003c\/h3\u003e\n\u003cp\u003eWhen servicing the bypass cartridge, inspect surrounding o-rings and gaskets for wear while the heater is open — replacing deteriorated seals at the same time avoids a repeat service call. Always confirm the heater has cooled and power and gas supply are fully shut off before beginning any work on the heater body. This component is specific to the Universal H-Series FD line; verify your exact heater model number on the unit's rating label before ordering.\u003c\/p\u003e\n\n\u003c!-- wft:processed:manual:2026-06-22 --\u003e","brand":"Hayward","offers":[{"title":"Default Title","offer_id":51774164533523,"sku":"FDXLBPK1930","price":65.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0920\/0687\/5411\/files\/hayward-bypass-cartridge-kit-for-universal-h-series-fd-heaters-fdxlbpk1930.webp?v=1786705281","url":"https:\/\/poolaroo.com\/products\/hayward-fd-heater-bypass-cartridge-kit-fdxlbpk1930","provider":"Poolaroo","version":"1.0","type":"link"}