{"title":"Hayward Universal HC Series Heater (HDF400 \/ HDF275) Replacement Parts","description":"\u003cp\u003eInteractive exploded-view parts diagram for Hayward HDF400 and HDF275 Universal HC Series small-footprint heaters. Click any numbered part to see the part number, price and stock. Common replacements include the ignition control board, display board, thermistor, gas valve, combustion blower and header o-rings. Not sure which part you need? Call us or bring the old part into any of our stores and we'll match it.\u003c\/p\u003e","products":[{"product_id":"haywardtristarpumpdrainpluggasketspx4000fghppspx4000fg","title":"Hayward TriStar Pump Drain Plug \u0026 Gasket | SPX4000FG","description":"\u003cdiv\u003e\n\u003ch2\u003eHayward TriStar Pump Drain Plug \u0026amp; Gasket | SPX4000FG\u003c\/h2\u003e\n\u003cp\u003eThe Hayward SPX4000FG TriStar Pump Drain Plug \u0026amp; Gasket is a genuine replacement part designed to fit a range of Hayward high-performance pool pumps. Crafted from durable materials for long-lasting use, this drain plug assembly ensures a secure, leak-free seal for your pump, helping maintain optimal performance and extending the life of your equipment. It’s easy to install and provides a reliable solution for routine maintenance or repairs.\u003c\/p\u003e\n\u003ch3\u003eFeatures:\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eDurable construction for long service life\u003c\/li\u003e\n\u003cli\u003eEnsures a secure, leak-free seal\u003c\/li\u003e\n\u003cli\u003eSimple and quick installation\u003c\/li\u003e\n\u003cli\u003eGenuine Hayward replacement part\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eFor Use With:\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eEcoStar® SP3400VSP\u003c\/li\u003e\n\u003cli\u003eTriStar® VS SP3200VSP\u003c\/li\u003e\n\u003cli\u003eTriStar® SP3200EE \/ SP3200X\u003c\/li\u003e\n\u003cli\u003eNorthStar™ SP4000 \/ SP4000X Pump Series\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eKeep your Hayward pump operating smoothly with the dependable Hayward TriStar Pump Drain Plug \u0026amp; Gasket SPX4000FG.\u003c\/p\u003e\n\u003cp\u003eSKU: SPX4000FG\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Hayward","offers":[{"title":"Default Title","offer_id":51576140857660,"sku":"SPX4000FG","price":6.94,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0736\/3280\/9276\/files\/hayward-tristar-pump-drain-plug-gasket-spx4000fg-hayward-301392.jpg?v=1750391781"},{"product_id":"haywardhseriesheatertransformer120240v24vacidxl2trf1930hppidxl2trf1930","title":"Hayward H-Series Heater Transformer 120\/240V-24VAC | IDXL2TRF1930","description":"\u003cdiv\u003e\n\u003ch1\u003eHayward IDXL2TRF1930 120\/240 V → 24 V AC Transformer – For Universal H-Series Heaters\u003c\/h1\u003e\n\u003cp\u003ePart # IDXL2TRF1930 — a factory replacement transformer for Hayward Universal H-Series and induced-draft heaters. This unit converts standard 120 V or 240 V line voltage down to 24 V AC required by the heater’s control circuits and safety components.\u003c\/p\u003e\n\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eAccepts 120 V or 240 V AC input — automatically adjusts to common household\/ equipment voltages.\u003c\/li\u003e\n\u003cli\u003eProvides stable 24 V AC output for burner controls, ignition module, sensors and safety circuits.\u003c\/li\u003e\n\u003cli\u003eOEM-spec design ensures proper fit and wiring clearances inside Hayward H-Series heater models, including low-NOx versions.\u003c\/li\u003e\n\u003cli\u003eRigid mounting and insulated wiring suitable for outdoor pool equipment installations.\u003c\/li\u003e\n\u003cli\u003eDirect replacement for original transformer — simplifies heater repair or rebuild without rewiring or modifications.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eCompatible Heater Models\u003c\/h2\u003e\n\u003cp\u003eCompatible with Hayward Universal H-Series and induced-draft heaters, including H150, H200, H250, H300, H350 and H400 family models (both “FD” and “IDL2” series) that require a 24 V control transformer. Ideal when original unit fails or shows signs of malfunction.\u003c\/p\u003e\n\u003ch2\u003eInstallation \u0026amp; Safety Notes\u003c\/h2\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003eBefore installation, shut off main power supply and disconnect heater from all power. Remove the old transformer, label and record existing wiring connections to the control board and safety devices. Install the new IDXL2TRF1930 in the original mount, reconnect wires to matching terminals, restore power and verify correct 24 V output. Test heater ignition and controls thoroughly before use. Always follow local electrical codes and manufacturer’s service manual instructions.\u003c\/p\u003e\n\u003ch2\u003eWhy Replace It?\u003c\/h2\u003e\n\u003cp\u003eReplacing a failing or damaged transformer restores safe and correct operation of ignition, controls, and safety interlocks. A faulty transformer can cause ignition failures, erratic behavior, or unsafe operating conditions — so timely replacement is critical to heater performance and longevity.\u003c\/p\u003e\n\u003ch2\u003eMaintenance Tips\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eInspect transformer wiring annually for signs of corrosion, insulation damage or water exposure.\u003c\/li\u003e\n\u003cli\u003eEnsure the mounting area stays dry and free of debris to avoid moisture-related failures.\u003c\/li\u003e\n\u003cli\u003eTest 24 V output periodically or when heater controls act erratically to catch electrical issues early.\u003c\/li\u003e\n\u003cli\u003eIf heater undergoes frequent power cycles or maintenance, verify wiring connections are secure after each service.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e","brand":"Hayward","offers":[{"title":"Default Title","offer_id":52335983558972,"sku":"IDXL2TRF1930","price":129.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0736\/3280\/9276\/files\/hayward-h-series-heater-transformer-120240v-24vac-idxl2trf1930-heater-parts-1667917.jpg?v=1764772273"},{"product_id":"haywardpumpunionconnectorkithppspx3200unkithppspx3200unkit","title":"Hayward Pump Union Connector Kit | SPX3200UNKIT","description":"\u003cdiv\u003e\n\u003ch1\u003eHayward SPX3200UNKIT Union Connector Kit\u003c\/h1\u003e\n\u003cp\u003e\u003cstrong\u003ePart Number:\u003c\/strong\u003e SPX3200UNKIT\u003c\/p\u003e\n\u003ch2\u003eDescription\u003c\/h2\u003e\n\u003cp\u003eThis union connector kit provides two genuine Hayward union connectors, each with a nut and gasket, intended for 2″ plumbing connections on select Hayward pumps, filters, and heaters. It simplifies removal and service of equipment while maintaining a secure, leak-resistant seal.\u003c\/p\u003e\n\u003ch2\u003eCompatibility \u0026amp; Fitment\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eDesigned for 2″ union connections on Hayward TriStar® SP3200EE, SP3200X, SP3600 pumps.\u003c\/li\u003e\n\u003cli\u003eAlso compatible with Hayward EcoStar® SP3400VSP series and NorthStar® SP4000\/ SP4000X (2008 and later).\u003c\/li\u003e\n\u003cli\u003eFits select Hayward Universal H-Series heaters, HeatPro® and SwimClear® cartridge filters where 2″ unions are specified.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eFeatures \u0026amp; Specifications\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eKit includes: two (2) union connectors, two (2) union nuts and two (2) gaskets.\u003c\/li\u003e\n\u003cli\u003eSize: 2″ nominal plumbing (union hose size ~2.5″ for 2″ line).\u003c\/li\u003e\n\u003cli\u003eMaterial: corrosion-resistant PVC material, designed to integrate with Hayward plumbing components.\u003c\/li\u003e\n\u003cli\u003eOEM Replacement — ensures correct fit, torque and alignment for Hayward equipment.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eInstallation Notes\u003c\/h2\u003e\n\u003cp\u003eShut off the pump and relieve system pressure. Remove the existing union hardware (nut, connector, gasket) from the equipment port. Clean the port face and thread area. Install the new connector body and gasket, hand-tighten the new union nut until seated, and use a hose clamp or back-nut torque per manufacturer’s recommendation. Run the system and check for leaks around the union. After 24 hours, re-check clamp torque if required.\u003c\/p\u003e\n\u003ch2\u003eMaintenance Tip\u003c\/h2\u003e\n\u003cp\u003eInspect union connectors annually or anytime the pump is removed. Over time gaskets compress and nuts may loosen. If you notice slight leaks, softened gaskets, or difficulty removing the union nut, replace with this kit to restore service-friendly access and a secure, leak-free connection.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Hayward","offers":[{"title":"Default Title","offer_id":52336009445692,"sku":"SPX3200UNKIT","price":44.94,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0736\/3280\/9276\/files\/hayward-pump-union-connector-kit-spx3200unkit-pump-parts-2024556.jpg?v=1762188852"},{"product_id":"haywardpoolheaterexhaustgastemperaturelimitfdxlegl1930hppfdxlegl1930","title":"Hayward Pool Heater Exhaust Gas Temperature Limit | FDXLEGL1930","description":"\u003cdiv class=\"product-description\"\u003e\n\n  \u003ch2\u003eHayward FDXLEGL1930 Exhaust Gas Temperature Limit (One-Use) — Universal H-Series \/ FD \/ H-Series 135K \/ Universal HC\u003c\/h2\u003e\n\n  \u003cp\u003e\n    The Hayward \u003cstrong\u003eFDXLEGL1930\u003c\/strong\u003e is an OEM \u003cstrong\u003eexhaust gas temperature limit\u003c\/strong\u003e safety device used on select Hayward pool\n    heaters. This is a \u003cstrong\u003eone-use (non-resettable)\u003c\/strong\u003e limit that helps protect the heater by shutting it down if exhaust gas\n    temperatures exceed safe operating levels. It’s a critical safety component for preventing damage from overheating, airflow restriction,\n    or combustion issues.\n  \u003c\/p\u003e\n\n  \u003ch3\u003eFits \/ Compatibility\u003c\/h3\u003e\n  \u003cul\u003e\n    \u003cli\u003eHayward \u003cstrong\u003eUniversal H-Series\u003c\/strong\u003e heater applications (model\/revision dependent)\u003c\/li\u003e\n    \u003cli\u003eHayward \u003cstrong\u003eUniversal H-Series Low NOx FD\u003c\/strong\u003e heater applications (model\/revision dependent)\u003c\/li\u003e\n    \u003cli\u003eHayward \u003cstrong\u003eH-Series 135,000 BTU\u003c\/strong\u003e induced draft \/ above-ground heaters such as \u003cstrong\u003eH135ID\u003c\/strong\u003e and \u003cstrong\u003eABG135\u003c\/strong\u003e\n\u003c\/li\u003e\n    \u003cli\u003eHayward \u003cstrong\u003eUniversal HC\u003c\/strong\u003e heaters including \u003cstrong\u003eHDF275\u003c\/strong\u003e and \u003cstrong\u003eHDF400\u003c\/strong\u003e\n\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003cp\u003e\n    \u003cstrong\u003eFit tip:\u003c\/strong\u003e Heater parts can vary by model and revision. Confirm your heater model from the data plate and verify\n    \u003cstrong\u003eFDXLEGL1930\u003c\/strong\u003e on the correct parts diagram before ordering.\n  \u003c\/p\u003e\n\n  \u003ch3\u003eWhat It Fixes\u003c\/h3\u003e\n  \u003cul\u003e\n    \u003cli\u003eHeater shutdown or lockout due to a tripped\/failed exhaust temperature limit\u003c\/li\u003e\n    \u003cli\u003eSafety circuit open condition traced to a blown one-time exhaust limit device\u003c\/li\u003e\n    \u003cli\u003ePreventive replacement during combustion\/venting service when the limit has been triggered\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003ch3\u003eCommon Causes of an Exhaust Limit Trip (Address Before Restarting)\u003c\/h3\u003e\n  \u003cul\u003e\n    \u003cli\u003eBlocked or restricted exhaust\/venting\u003c\/li\u003e\n    \u003cli\u003eRestricted air intake, debris in blower area, or poor combustion air supply\u003c\/li\u003e\n    \u003cli\u003eExchanger\/combustion chamber issues or soot buildup\u003c\/li\u003e\n    \u003cli\u003eIncorrect gas supply\/combustion setup or other combustion-related faults\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003ch3\u003eWhat’s Included\u003c\/h3\u003e\n  \u003cul\u003e\n    \u003cli\u003e(1) \u003cstrong\u003eFDXLEGL1930\u003c\/strong\u003e one-use exhaust gas temperature limit\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003ch3\u003eSpecs (Quick Reference)\u003c\/h3\u003e\n  \u003cul\u003e\n    \u003cli\u003ePart Number: \u003cstrong\u003eFDXLEGL1930\u003c\/strong\u003e\n\u003c\/li\u003e\n    \u003cli\u003ePart Type: \u003cstrong\u003eHeater Parts\u003c\/strong\u003e\n\u003c\/li\u003e\n    \u003cli\u003eSafety Type: \u003cstrong\u003eOne-use (non-resettable) exhaust gas limit\u003c\/strong\u003e\n\u003c\/li\u003e\n    \u003cli\u003ePool Type: \u003cstrong\u003eIn-Ground\u003c\/strong\u003e\n\u003c\/li\u003e\n    \u003cli\u003eWarranty: \u003cstrong\u003e1-Year (Parts Only)\u003c\/strong\u003e\n\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003ch3\u003eInstallation Notes\u003c\/h3\u003e\n  \u003cul\u003e\n    \u003cli\u003e\n\u003cstrong\u003eTurn off power and gas\u003c\/strong\u003e to the heater before service and allow the unit to cool.\u003c\/li\u003e\n    \u003cli\u003eThis is a \u003cstrong\u003esafety device\u003c\/strong\u003e; if it has tripped, diagnose and correct the underlying cause before operating the heater again.\u003c\/li\u003e\n    \u003cli\u003eInstallation and combustion\/venting diagnosis should be performed by a \u003cstrong\u003equalified technician\u003c\/strong\u003e.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003ch3\u003eRelated Products\u003c\/h3\u003e\n  \u003cul\u003e\n    \u003cli\u003e\u003ca href=\"https:\/\/aquapoolsupply.com\/search?q=FDXLEGL1930\"\u003eHayward FDXLEGL1930 (search)\u003c\/a\u003e\u003c\/li\u003e\n    \u003cli\u003e\u003ca href=\"https:\/\/aquapoolsupply.com\/search?q=FDXLFSK1930\"\u003eHayward FDXLFSK1930 Fuse Service Kit (search)\u003c\/a\u003e\u003c\/li\u003e\n    \u003cli\u003e\u003ca href=\"https:\/\/aquapoolsupply.com\/search?q=FDXLFWP1930\"\u003eHayward FDXLFWP1930 Field Wiring Panel \/ Fuse Board (search)\u003c\/a\u003e\u003c\/li\u003e\n    \u003cli\u003e\u003ca href=\"https:\/\/aquapoolsupply.com\/search?q=FDXLIGN1930\"\u003eHayward FDXLIGN1930 Igniter (search)\u003c\/a\u003e\u003c\/li\u003e\n    \u003cli\u003e\u003ca href=\"https:\/\/aquapoolsupply.com\/search?q=Hayward%20FD%20heater%20parts\"\u003eHayward Universal H-Series FD Heater Parts (search)\u003c\/a\u003e\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr\u003e\n\n  \u003ch3\u003eMaintenance Tips\u003c\/h3\u003e\n  \u003cul\u003e\n    \u003cli\u003eKeep the heater’s air intake and exhaust areas clear of leaves, insects, and debris to maintain proper airflow.\u003c\/li\u003e\n    \u003cli\u003eIf the heater shows signs of soot or strong exhaust odor, stop use and have combustion inspected.\u003c\/li\u003e\n    \u003cli\u003eMaintain proper water flow and balanced water chemistry to reduce internal stress on the heater.\u003c\/li\u003e\n    \u003cli\u003eAddress any safety shutdowns promptly—repeated cycling without fixing root causes can lead to larger failures.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n\u003c\/div\u003e","brand":"Hayward","offers":[{"title":"Default Title","offer_id":52589938245948,"sku":"FDXLEGL1930","price":25.75,"currency_code":"USD","in_stock":true}]},{"product_id":"haywardhseriesfdpoolheaterfuseservicekitfdxlfsk1930hppfdxlfsk1930","title":"Hayward H-Series FD Pool Heater Fuse Service Kit | FDXLFSK1930","description":"\u003cdiv class=\"product-description\"\u003e\n\n  \u003ch2\u003eHayward FDXLFSK1930 Fuse Service Kit (FD) for Universal H-Series Low NOx FD Heaters\u003c\/h2\u003e\n\n  \u003cp\u003e\n    The Hayward \u003cstrong\u003eFDXLFSK1930\u003c\/strong\u003e is an OEM \u003cstrong\u003efuse service kit\u003c\/strong\u003e for Hayward\n    \u003cstrong\u003eUniversal H-Series Low NOx “FD”\u003c\/strong\u003e pool heaters. It provides the replacement fuses used on the heater’s electrical\n    protection circuits, making it a convenient kit for troubleshooting, preventive maintenance, or restoring operation after a blown fuse.\n  \u003c\/p\u003e\n\n  \u003ch3\u003eFits \/ Compatibility\u003c\/h3\u003e\n  \u003cul\u003e\n    \u003cli\u003eHayward Universal H-Series Low NOx FD heaters:\n      \u003cstrong\u003eH150FDN\u003c\/strong\u003e, \u003cstrong\u003eH150FDP\u003c\/strong\u003e, \u003cstrong\u003eH200FDN\u003c\/strong\u003e, \u003cstrong\u003eH200FDP\u003c\/strong\u003e,\n      \u003cstrong\u003eH250FDN\u003c\/strong\u003e, \u003cstrong\u003eH250FDP\u003c\/strong\u003e, \u003cstrong\u003eH300FDN\u003c\/strong\u003e, \u003cstrong\u003eH300FDP\u003c\/strong\u003e,\n      \u003cstrong\u003eH350FDN\u003c\/strong\u003e, \u003cstrong\u003eH350FDP\u003c\/strong\u003e, \u003cstrong\u003eH400FDN\u003c\/strong\u003e, \u003cstrong\u003eH400FDP\u003c\/strong\u003e\n    \u003c\/li\u003e\n    \u003cli\u003eAlso commonly listed for \u003cstrong\u003eH500FDN\u003c\/strong\u003e \/ \u003cstrong\u003eH500FDP\u003c\/strong\u003e (verify your heater model and parts diagram)\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003ch3\u003eWhat’s Included (8 Fuses Total)\u003c\/h3\u003e\n  \u003cul\u003e\n    \u003cli\u003e(1) \u003cstrong\u003e3.0A\u003c\/strong\u003e violet fuse\u003c\/li\u003e\n    \u003cli\u003e(2) \u003cstrong\u003e1.5A\u003c\/strong\u003e fuses\u003c\/li\u003e\n    \u003cli\u003e(2) \u003cstrong\u003e3.0A\u003c\/strong\u003e short glass cartridge fuses\u003c\/li\u003e\n    \u003cli\u003e(3) \u003cstrong\u003e3.0A\u003c\/strong\u003e long glass cartridge fuses\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003ch3\u003eWhat It Fixes\u003c\/h3\u003e\n  \u003cul\u003e\n    \u003cli\u003eHeater won’t power up or loses control power due to a \u003cstrong\u003eblown fuse\u003c\/strong\u003e\n\u003c\/li\u003e\n    \u003cli\u003eIntermittent operation caused by an aged\/weak fuse\u003c\/li\u003e\n    \u003cli\u003eProvides correct fuse types for service after diagnosing the cause of an overload\/short\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003ch3\u003eInstallation Notes\u003c\/h3\u003e\n  \u003cul\u003e\n    \u003cli\u003e\n\u003cstrong\u003eTurn off power\u003c\/strong\u003e to the heater at the breaker before opening the cabinet.\u003c\/li\u003e\n    \u003cli\u003eReplace fuses only with the \u003cstrong\u003esame type and amp rating\u003c\/strong\u003e.\u003c\/li\u003e\n    \u003cli\u003eIf a replacement fuse blows again, stop and diagnose the underlying issue (wiring short, failed component, moisture intrusion, etc.).\u003c\/li\u003e\n    \u003cli\u003eElectrical service should be performed by a qualified technician.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003ch3\u003eSpecs (Quick Reference)\u003c\/h3\u003e\n  \u003cul\u003e\n    \u003cli\u003ePart Number: \u003cstrong\u003eFDXLFSK1930\u003c\/strong\u003e\n\u003c\/li\u003e\n    \u003cli\u003ePart Type: \u003cstrong\u003eHeater Parts \/ Electrical\u003c\/strong\u003e (Fuse Service Kit)\u003c\/li\u003e\n    \u003cli\u003ePool Type: \u003cstrong\u003eIn-Ground\u003c\/strong\u003e (commonly listed for commercial applications as well)\u003c\/li\u003e\n    \u003cli\u003eApprox. Shipping Weight: \u003cstrong\u003e0.6 lb\u003c\/strong\u003e\n\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003ch3\u003eRelated Products\u003c\/h3\u003e\n  \u003cul\u003e\n    \u003cli\u003e\u003ca href=\"https:\/\/aquapoolsupply.com\/search?q=FDXLFSK1930\"\u003eHayward FDXLFSK1930 Fuse Service Kit (search)\u003c\/a\u003e\u003c\/li\u003e\n    \u003cli\u003e\u003ca href=\"https:\/\/aquapoolsupply.com\/search?q=FDXLFWP1930\"\u003eHayward FDXLFWP1930 Field Wiring Panel \/ Fuse Board (search)\u003c\/a\u003e\u003c\/li\u003e\n    \u003cli\u003e\u003ca href=\"https:\/\/aquapoolsupply.com\/search?q=FDXLWPS1930\"\u003eHayward FDXLWPS1930 Water Pressure Switch (search)\u003c\/a\u003e\u003c\/li\u003e\n    \u003cli\u003e\u003ca href=\"https:\/\/aquapoolsupply.com\/search?q=FDXLTER1931\"\u003eHayward FDXLTER1931 Thermistor \/ Temp Sensor (search)\u003c\/a\u003e\u003c\/li\u003e\n    \u003cli\u003e\u003ca href=\"https:\/\/aquapoolsupply.com\/search?q=FDXLHLI1930\"\u003eHayward FDXLHLI1930 High Limit Switch Kit (search)\u003c\/a\u003e\u003c\/li\u003e\n    \u003cli\u003e\u003ca href=\"https:\/\/aquapoolsupply.com\/search?q=Hayward%20FD%20heater%20parts\"\u003eHayward Universal H-Series FD Heater Parts (search)\u003c\/a\u003e\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr\u003e\n\n  \u003ch3\u003eMaintenance Tips\u003c\/h3\u003e\n  \u003cul\u003e\n    \u003cli\u003eKeep the heater cabinet sealed and dry—moisture is a common cause of corrosion and electrical faults that can blow fuses.\u003c\/li\u003e\n    \u003cli\u003eIf fuses fail repeatedly, inspect for rubbed-through wires, rodent damage, loose terminals, or failed components before replacing more fuses.\u003c\/li\u003e\n    \u003cli\u003eMaintain proper flow (clean baskets\/filters) to avoid nuisance faults that can stress electrical components.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n\u003c\/div\u003e","brand":"Hayward","offers":[{"title":"Default Title","offer_id":52589938213180,"sku":"FDXLFSK1930","price":33.86,"currency_code":"USD","in_stock":true}]},{"product_id":"haywardhseriesfdpoolheaterfieldwiringpanelkitfdxlfwp1930hppfdxlfwp1930","title":"Hayward H-Series FD Pool Heater Field Wiring Panel Kit | FDXLFWP1930","description":"\u003cdiv class=\"product-description\"\u003e\n\n  \u003ch2\u003eHayward FDXLFWP1930 Field Wiring Panel Kit (Fuse Board) for Universal H-Series Low NOx FD Heaters\u003c\/h2\u003e\n\n  \u003cp\u003e\n    The Hayward \u003cstrong\u003eFDXLFWP1930\u003c\/strong\u003e is a genuine OEM \u003cstrong\u003efield wiring panel kit\u003c\/strong\u003e (often referred to as the\n    \u003cstrong\u003efuse board\u003c\/strong\u003e) for Hayward \u003cstrong\u003eUniversal H-Series Low NOx “FD”\u003c\/strong\u003e pool heaters. This assembly provides the heater’s\n    primary \u003cstrong\u003efield wiring connection interface\u003c\/strong\u003e and helps distribute incoming power safely to the heater’s control circuits.\n  \u003c\/p\u003e\n\n  \u003ch3\u003eFits \/ Compatibility\u003c\/h3\u003e\n  \u003cul\u003e\n    \u003cli\u003eHayward Universal H-Series Low NOx FD heaters:\n      \u003cstrong\u003eH150FDN\u003c\/strong\u003e, \u003cstrong\u003eH150FDP\u003c\/strong\u003e, \u003cstrong\u003eH200FDN\u003c\/strong\u003e, \u003cstrong\u003eH200FDP\u003c\/strong\u003e,\n      \u003cstrong\u003eH250FDN\u003c\/strong\u003e, \u003cstrong\u003eH250FDP\u003c\/strong\u003e, \u003cstrong\u003eH300FDN\u003c\/strong\u003e, \u003cstrong\u003eH300FDP\u003c\/strong\u003e,\n      \u003cstrong\u003eH350FDN\u003c\/strong\u003e, \u003cstrong\u003eH350FDP\u003c\/strong\u003e, \u003cstrong\u003eH400FDN\u003c\/strong\u003e, \u003cstrong\u003eH400FDP\u003c\/strong\u003e\n    \u003c\/li\u003e\n    \u003cli\u003eAlso commonly listed for \u003cstrong\u003eH500FDN\u003c\/strong\u003e \/ \u003cstrong\u003eH500FDP\u003c\/strong\u003e (verify your heater model and parts diagram)\u003c\/li\u003e\n    \u003cli\u003eUsed on many \u003cstrong\u003eASME\/commercial\u003c\/strong\u003e Universal H-Series FD heater configurations (model\/revision dependent)\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003ch3\u003eWhat It Does\u003c\/h3\u003e\n  \u003cul\u003e\n    \u003cli\u003eProvides the \u003cstrong\u003eterminal\/connection point\u003c\/strong\u003e for field wiring inside the heater\u003c\/li\u003e\n    \u003cli\u003eFunctions as the heater’s \u003cstrong\u003efuse board\/power distribution panel\u003c\/strong\u003e for supported circuits\u003c\/li\u003e\n    \u003cli\u003eHelps ensure \u003cstrong\u003ereliable power delivery\u003c\/strong\u003e to the heater’s electronics when the original panel is damaged or corroded\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003ch3\u003eCommon Reasons to Replace\u003c\/h3\u003e\n  \u003cul\u003e\n    \u003cli\u003eHeater won’t power up and diagnostics point to a failed\/damaged \u003cstrong\u003efuse board\u003c\/strong\u003e\n\u003c\/li\u003e\n    \u003cli\u003eBurned terminals, heat damage, or corrosion on the wiring panel\u003c\/li\u003e\n    \u003cli\u003eMoisture intrusion inside the heater cabinet causing board damage\u003c\/li\u003e\n    \u003cli\u003eIntermittent power issues after confirming supply voltage and wiring integrity\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003ch3\u003eInstallation Notes\u003c\/h3\u003e\n  \u003cul\u003e\n    \u003cli\u003e\n\u003cstrong\u003eTurn off power at the breaker\u003c\/strong\u003e before opening the heater.\u003c\/li\u003e\n    \u003cli\u003eLabel or photograph all wiring connections before removal for correct reinstallation.\u003c\/li\u003e\n    \u003cli\u003eIf the original failure was moisture-related, fix the sealing\/conduit issue before installing the new panel.\u003c\/li\u003e\n    \u003cli\u003eElectrical service should be performed by a qualified technician and must follow applicable codes.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003ch3\u003eSpecs (Quick Reference)\u003c\/h3\u003e\n  \u003cul\u003e\n    \u003cli\u003ePart Number: \u003cstrong\u003eFDXLFWP1930\u003c\/strong\u003e\n\u003c\/li\u003e\n    \u003cli\u003ePart Type: \u003cstrong\u003eHeater Parts \/ Electrical\u003c\/strong\u003e (Field Wiring Panel \/ Fuse Board)\u003c\/li\u003e\n    \u003cli\u003eHeater Family: \u003cstrong\u003eUniversal H-Series Low NOx FD\u003c\/strong\u003e\n\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003ch3\u003eRelated Products\u003c\/h3\u003e\n  \u003cul\u003e\n    \u003cli\u003e\u003ca href=\"https:\/\/aquapoolsupply.com\/search?q=FDXLFWP1930\"\u003eHayward FDXLFWP1930 Field Wiring Panel Kit (search)\u003c\/a\u003e\u003c\/li\u003e\n    \u003cli\u003e\u003ca href=\"https:\/\/aquapoolsupply.com\/search?q=FDXLWPS1930\"\u003eHayward FDXLWPS1930 Water Pressure Switch (FD Heaters) (search)\u003c\/a\u003e\u003c\/li\u003e\n    \u003cli\u003e\u003ca href=\"https:\/\/aquapoolsupply.com\/search?q=FDXLTER1931\"\u003eHayward FDXLTER1931 Thermistor \/ Temp Sensor (search)\u003c\/a\u003e\u003c\/li\u003e\n    \u003cli\u003e\u003ca href=\"https:\/\/aquapoolsupply.com\/search?q=FDXLHLI1930\"\u003eHayward FDXLHLI1930 High Limit Switch Kit (search)\u003c\/a\u003e\u003c\/li\u003e\n    \u003cli\u003e\u003ca href=\"https:\/\/aquapoolsupply.com\/search?q=IDXL2TRF1930\"\u003eHayward IDXL2TRF1930 Transformer (search)\u003c\/a\u003e\u003c\/li\u003e\n    \u003cli\u003e\u003ca href=\"https:\/\/aquapoolsupply.com\/search?q=FDXLIGN1930\"\u003eHayward FDXLIGN1930 Igniter (search)\u003c\/a\u003e\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr\u003e\n\n  \u003ch3\u003eMaintenance Tips\u003c\/h3\u003e\n  \u003cul\u003e\n    \u003cli\u003eKeep the heater cabinet sealed and dry—moisture is a leading cause of electrical panel and board failures.\u003c\/li\u003e\n    \u003cli\u003eIf the heater loses power intermittently, inspect supply voltage, wiring terminals, and any signs of heat discoloration at connections.\u003c\/li\u003e\n    \u003cli\u003eMaintain proper water flow (clean baskets\/filters) to reduce nuisance faults that can lead to repeated cycling and electrical stress.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n\u003c\/div\u003e","brand":"Hayward","offers":[{"title":"Default Title","offer_id":52589938278716,"sku":"FDXLFWP1930","price":79.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0736\/3280\/9276\/files\/hayward-h-series-fd-pool-heater-field-wiring-panel-kit-fdxlfwp1930-heater-parts-5329478.jpg?v=1772790148"},{"product_id":"haywardhseriesfdheaterthermistorfdxlter1931hppfdxlter1931","title":"Hayward H-Series FD Heater Thermistor | FDXLTER1931","description":"\u003cdiv class=\"product-description\"\u003e\n\n  \u003ch2\u003eHayward FDXLTER1931 Thermistor (Water Temperature Sensor) for Universal H-Series FD Heaters\u003c\/h2\u003e\n\n  \u003cp\u003e\n    The Hayward \u003cstrong\u003eFDXLTER1931\u003c\/strong\u003e is a genuine OEM \u003cstrong\u003ethermistor (water temperature sensor)\u003c\/strong\u003e used on Hayward\n    \u003cstrong\u003eUniversal H-Series Low NOx “FD”\u003c\/strong\u003e pool heaters. It measures water temperature and sends a signal to the heater control board\n    so the heater can regulate firing accurately and display correct temperature readings.\n  \u003c\/p\u003e\n\n  \u003ch3\u003eFits \/ Compatibility\u003c\/h3\u003e\n  \u003cul\u003e\n    \u003cli\u003eHayward Universal H-Series FD heaters including:\n      \u003cstrong\u003eH150FDN\u003c\/strong\u003e, \u003cstrong\u003eH150FDP\u003c\/strong\u003e, \u003cstrong\u003eH200FDN\u003c\/strong\u003e, \u003cstrong\u003eH200FDP\u003c\/strong\u003e,\n      \u003cstrong\u003eH250FDN\u003c\/strong\u003e, \u003cstrong\u003eH250FDP\u003c\/strong\u003e, \u003cstrong\u003eH300FDN\u003c\/strong\u003e, \u003cstrong\u003eH300FDP\u003c\/strong\u003e,\n      \u003cstrong\u003eH350FDN\u003c\/strong\u003e, \u003cstrong\u003eH350FDP\u003c\/strong\u003e, \u003cstrong\u003eH400FDN\u003c\/strong\u003e, \u003cstrong\u003eH400FDP\u003c\/strong\u003e\n    \u003c\/li\u003e\n    \u003cli\u003eAlso commonly referenced for \u003cstrong\u003eUniversal HC \/ HDF\u003c\/strong\u003e heater configurations (verify your exact model and parts diagram)\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003ch3\u003eCommon Symptoms of a Bad Thermistor\u003c\/h3\u003e\n  \u003cul\u003e\n    \u003cli\u003eDisplayed water temperature is inaccurate or jumps around\u003c\/li\u003e\n    \u003cli\u003eHeater short-cycles or won’t maintain set temperature\u003c\/li\u003e\n    \u003cli\u003eTemperature-related fault codes or intermittent shutdowns (after confirming proper flow)\u003c\/li\u003e\n    \u003cli\u003eCorroded sensor body or damaged wiring\/connector\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003ch3\u003eKey Features\u003c\/h3\u003e\n  \u003cul\u003e\n    \u003cli\u003eOEM Hayward replacement for correct signal compatibility and fit\u003c\/li\u003e\n    \u003cli\u003eRestores accurate water temperature sensing for stable heater operation\u003c\/li\u003e\n    \u003cli\u003eDesigned for in-ground pool heater applications\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003ch3\u003eSpecs (Quick Reference)\u003c\/h3\u003e\n  \u003cul\u003e\n    \u003cli\u003ePart Number: \u003cstrong\u003eFDXLTER1931\u003c\/strong\u003e\n\u003c\/li\u003e\n    \u003cli\u003ePart Type: \u003cstrong\u003eHeater Parts\u003c\/strong\u003e (Thermistor \/ Temperature Sensor)\u003c\/li\u003e\n    \u003cli\u003ePool Type: \u003cstrong\u003eIn-Ground\u003c\/strong\u003e\n\u003c\/li\u003e\n    \u003cli\u003eReplacement Part Warranty: \u003cstrong\u003e1-Year (Parts Only)\u003c\/strong\u003e\n\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003ch3\u003eInstallation Notes\u003c\/h3\u003e\n  \u003cul\u003e\n    \u003cli\u003e\n\u003cstrong\u003eTurn off power\u003c\/strong\u003e to the heater at the breaker before servicing.\u003c\/li\u003e\n    \u003cli\u003eInspect the connector and wiring harness for corrosion or loose pins before installing the new sensor.\u003c\/li\u003e\n    \u003cli\u003eIf the heater still shows temperature issues after replacement, inspect water flow, bypass settings, and the control board input.\u003c\/li\u003e\n    \u003cli\u003eInstallation should be performed by a qualified technician.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003ch3\u003eRelated Products\u003c\/h3\u003e\n  \u003cul\u003e\n    \u003cli\u003e\u003ca href=\"https:\/\/aquapoolsupply.com\/search?q=FDXLTER1931\"\u003eHayward FDXLTER1931 Thermistor (search)\u003c\/a\u003e\u003c\/li\u003e\n    \u003cli\u003e\u003ca href=\"https:\/\/aquapoolsupply.com\/search?q=FDXLWPS1930\"\u003eHayward FDXLWPS1930 Water Pressure Switch (FD Heaters) (search)\u003c\/a\u003e\u003c\/li\u003e\n    \u003cli\u003e\u003ca href=\"https:\/\/aquapoolsupply.com\/search?q=Hayward%20H-Series%20FD%20heater%20parts\"\u003eHayward Universal H-Series FD Heater Parts (search)\u003c\/a\u003e\u003c\/li\u003e\n    \u003cli\u003e\u003ca href=\"https:\/\/aquapoolsupply.com\/search?q=pool%20heater%20igniter%20hayward%20FD\"\u003eHayward FD Heater Igniters (search)\u003c\/a\u003e\u003c\/li\u003e\n    \u003cli\u003e\u003ca href=\"https:\/\/aquapoolsupply.com\/search?q=pool%20heater%20flame%20sensor%20hayward%20FD\"\u003eHayward FD Heater Flame Sensors (search)\u003c\/a\u003e\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr\u003e\n\n  \u003ch3\u003eMaintenance Tips\u003c\/h3\u003e\n  \u003cul\u003e\n    \u003cli\u003eKeep the filter clean and valves fully open—flow issues can cause erratic heater behavior that looks like a sensor problem.\u003c\/li\u003e\n    \u003cli\u003eMaintain balanced water chemistry to reduce scale inside the heater, which can affect temperature control and efficiency.\u003c\/li\u003e\n    \u003cli\u003eInspect heater wiring connections seasonally for corrosion or loose terminals, especially in humid or coastal environments.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n\u003c\/div\u003e","brand":"Hayward","offers":[{"title":"Default Title","offer_id":52589938442556,"sku":"FDXLTER1931","price":44.39,"currency_code":"USD","in_stock":false}]},{"product_id":"hayward-ignitor-and-flame-sensor-kit-for-hdf400-hc-series-heater-hdxfigfs002-lv","title":"Hayward Ignitor and Flame Sensor Kit for HDF400 HC Series Heater HDXFIGFS002-LV","description":"\u003cdiv class=\"GridItemStyle--1p6f4s8 jIwqBA\"\u003e\n\u003cdiv data-test-selector=\"productDetails_htmlContent\" class=\"sc-bczRLJ kEeNDb\"\u003eWith the pool as the centerpiece of the rapidly growing Outdoor Living market, Hayward is prioritizing innovation, efficiency, and comfort. We’ve built industry-leading equipment, filters, and pumps for over 100 years, and today, we are at the forefront of innovation for pool and outdoor living technology and internet-connected homes. Guided by our mission to build better so you can backyard better, Hayward delivers exceptional products, outstanding service, and innovative technology to transform the experience of water. We offer a full line of energy-efficient, sustainable and digitally-connected residential and commercial pool equipment including pumps, filters, heaters, cleaners, LED lighting, and water features. Whether you're trying to create the perfect backyard environment, reduce operating and maintenance costs, or harness the power and convenience of wireless controls, Hayward makes the equipment and technology to help you do it.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"GridItemStyle--1p6f4s8 jcpfKJ\"\u003e\u003cbr\u003e\u003c\/div\u003e","brand":"Hayward","offers":[{"title":"Default Title","offer_id":53144870322492,"sku":"HDXFIGFS002-LV","price":149.99,"currency_code":"USD","in_stock":false}]}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0736\/3280\/9276\/collections\/hayward-universal-hc-series-heater-parts-diagram.png?v=1790637394","url":"https:\/\/aquapoolsupply.com\/collections\/parts-list-hayward-universal-hc-series-dual-fuel-heater.oembed","provider":"Aqua Pool Supply","version":"1.0","type":"link"}