{"product_id":"laars-heating-systems-e2313900-ignition-module","title":"Laars Heating Systems E2313900 Ignition Module","description":"\u003cp\u003eThe \u003cstrong\u003eLaars Heating Systems E2313900 Ignition Module\u003c\/strong\u003e is a critical \u003cstrong\u003e24V electronic ignition control\u003c\/strong\u003e engineered for precision sequence timing in \u003cstrong\u003enatural gas boilers\u003c\/strong\u003e. Designed for professional field replacement, this module features a \u003cstrong\u003e3-try, 4-second trial for ignition (TFI)\u003c\/strong\u003e protocol, ensuring safe burner startup and flame rectification. As a direct \u003cstrong\u003eOEM replacement part\u003c\/strong\u003e, it replaces obsolete and legacy controls, including part numbers \u003cstrong\u003e35-679920-571\u003c\/strong\u003e and \u003cstrong\u003e35-679928-561\u003c\/strong\u003e. This module manages the pilot and main burner valves while providing the necessary high-voltage spark for \u003cstrong\u003eintermittent pilot ignition systems\u003c\/strong\u003e. Built for high-duty cycles in residential and light commercial hydronic applications, the \u003cstrong\u003eE2313900 ignition control\u003c\/strong\u003e maintains system integrity by preventing gas buildup through its rigorous safety lockout timing. For contractors servicing Laars equipment, utilizing this \u003cstrong\u003egenuine Laars replacement\u003c\/strong\u003e ensures exact electrical connector alignment and mounting footprint compatibility, reducing diagnostic time and installation labor on-site.\u003c\/p\u003e\n\n\u003ch3\u003eKey Benefits for the Technician\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eDirect OEM Compatibility:\u003c\/strong\u003e Ensures seamless integration with existing \u003cstrong\u003eLaars boiler\u003c\/strong\u003e wiring harnesses and factory bracketry.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStandardized Sequence:\u003c\/strong\u003e Features \u003cstrong\u003e3-try ignition\u003c\/strong\u003e logic to minimize nuisance lockouts during cold starts or low gas pressure scenarios.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEnhanced Safety Timing:\u003c\/strong\u003e The \u003cstrong\u003e4-second TFI\u003c\/strong\u003e windows are calibrated to meet stringent combustion safety standards for \u003cstrong\u003enatural gas heating systems\u003c\/strong\u003e.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBroad Cross-Reference:\u003c\/strong\u003e Consolidates inventory by replacing multiple \u003cstrong\u003eFenwal 35-67 series\u003c\/strong\u003e and legacy Laars ignition boards.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eCommon Questions\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eIs this module compatible with LP gas systems?\u003c\/strong\u003e\u003cbr\u003e\nThe \u003cstrong\u003eE2313900\u003c\/strong\u003e is specified for \u003cstrong\u003enatural gas boilers\u003c\/strong\u003e. Verify the specific manifold pressure and gas valve requirements of your equipment before attempting use on propane applications.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhat does the 3-try, 4-second TFI signify for troubleshooting?\u003c\/strong\u003e\u003cbr\u003e\nIt indicates the control will attempt to light the burner three times, providing a 4-second spark window for each attempt. If flame sensing is not confirmed via the \u003cstrong\u003eflame rectification\u003c\/strong\u003e circuit, the module will enter safety lockout.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eDoes this replace the Fenwal 35-679920-571 specifically?\u003c\/strong\u003e\u003cbr\u003e\nYes, the \u003cstrong\u003eLaars E2313900\u003c\/strong\u003e is the designated replacement for \u003cstrong\u003e35-679920-571\u003c\/strong\u003e and \u003cstrong\u003e35-679928-561\u003c\/strong\u003e, maintaining the same electrical parameters and terminal configurations.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong style=\"color: red;\"\u003eThis item is not eligible for free shipping.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eDisclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.\u003c\/p\u003e","brand":"Laars Heating Systems","offers":[{"title":"Default Title","offer_id":43001322176690,"sku":"E2313900","price":405.57,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1838\/2375\/products\/Pic_d54bd02c-9daa-4528-8c1f-98a96b95b4ac.png?v=1751412073","url":"https:\/\/www.gsistore.com\/products\/laars-heating-systems-e2313900-ignition-module","provider":"GSIstore","version":"1.0","type":"link"}