{"product_id":"haywardhseriesfdheaterthermistorfdxlter1930hppfdxlter1930","title":"Hayward H-Series FD Heater Thermistor | FDXLTER1930","description":"\u003cdiv\u003e\n\u003ch1\u003eHayward FDXLTER1930 Thermistor\u003c\/h1\u003e\n\u003cp\u003eThe Hayward FDXLTER1930 thermistor is a genuine replacement sensor designed for use in Universal H-Series low-NOx pool heaters. It monitors water or system temperature to ensure accurate control and safe heater operation.\u003c\/p\u003e\n\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eReplacement thermistor for Universal H-Series heaters by Hayward.\u003c\/li\u003e\n\u003cli\u003eEnsures accurate temperature sensing for reliable heater operation.\u003c\/li\u003e\n\u003cli\u003eSupplied as an OEM part—fits multiple H-Series models.\u003c\/li\u003e\n\u003cli\u003eDesigned for in-ground pool heater systems and commercial or residential applications.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eTechnical Details\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePart Number:\u003c\/strong\u003e FDXLTER1930\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUPC:\u003c\/strong\u003e 610377073790\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCompatible With:\u003c\/strong\u003e Hayward Universal H-Series Low NOx models (e.g., H150FDN, H150FDP, H200FDN, H200FDP, H250FDN, H250FDP, H300FDN, H300FDP, H350FDN, H350FDP, H400FDN, H400FDP)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eApplication:\u003c\/strong\u003e Pool and spa heater temperature sensor\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eInstallation \u0026amp; Compatibility Notes\u003c\/h2\u003e\n\u003cp\u003eConfirm that your heater model matches one of the supported H-Series models. Replace the thermistor only when the heater is powered off and access to the sensor location is available. Proper wiring and connection according to the heater’s wiring diagram are essential to restore correct temperature sensing and safe operation.\u003c\/p\u003e\n\u003ch2\u003eMaintenance Tips\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eInspect the sensor wiring and connection for any signs of corrosion or damage.\u003c\/li\u003e\n\u003cli\u003eEnsure the sensor probe is correctly positioned and secured in the specified sensor port.\u003c\/li\u003e\n\u003cli\u003eIf the heater shows temperature errors or fails to up-rate temperature correctly, the thermistor may be the root cause.\u003c\/li\u003e\n\u003cli\u003eAlways restore correct system grounding and return covers after service.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eWhy Choose This Part?\u003c\/h2\u003e\n\u003cp\u003eInstalling the correct sensor for your heater ensures the control board receives accurate temperature feedback, which supports efficient heating, safe operation, and protects the heat exchanger from over-temperature damage. The Hayward FDXLTER1930 offers a factory-matched replacement, maintaining system integrity and avoiding compatibility issues.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Hayward","offers":[{"title":"Default Title","offer_id":46797814726831,"sku":"FDXLTER1930","price":44.43,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0734\/6415\/2239\/files\/hayward-h-series-fd-heater-thermistor-fdxlter1930-heater-parts-6607653.jpg?v=1777067672","url":"https:\/\/freshized.com\/products\/haywardhseriesfdheaterthermistorfdxlter1930hppfdxlter1930","provider":"Freshized","version":"1.0","type":"link"}