{"product_id":"sp735l-guaranteed-working-tested-good-control-board-ignition-module-18g9101","title":"SP735L GUARANTEED WORKING TESTED GOOD Control Board Ignition Module 18G9101","description":"\u003cp\u003e\u003cstrong\u003e\u003cem\u003eThis product may contain shelf wear, have minor cosmetic imperfections, or have been tested. All our certified pre-owned products are backed by our return policy. We offer free shipping on all items. Please contact us for discounts or if you have any questions. We look forward to doing business with you!\u003c\/em\u003e\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003e• Model: Robertshaw\/Lennox 18G9101 (SP735L) Ignition Control Board\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003e• Function: Intermittent pilot ignition module for ignition spark control and flame sensing  • Spark Rate: Typically 4 to 15 sparks per second (based on similar Robertshaw modules)  • Safety Lockout Timing: Approximately 90 seconds spark followed by lockout period on failure  • Flame Monitoring: Uses solid-state logic and flame rectification to verify pilot flame presence  • Voltage: 24V operation standard for residential\/commercial gas heating systems  • Ignition Retry Logic: Multiple ignition attempts before lockout, including timed purge cycles  • Compatibility: Replaces numerous OEM models including Robertshaw and Lennox ignition modules  • Typical Weight: Approximately 1.25 lbs (based on similar modules)  • Application: Controls pilot valve and main gas valve operation during heating cycles  • Construction: Durable circuit board designed for reliable long-term heating system operation\u003c\/p\u003e","brand":"Lennox","offers":[{"title":"Default Title","offer_id":43672934776941,"sku":"12919","price":189.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0637\/2419\/1853\/files\/s-l800_7b7c8955-3078-46b4-8230-7905e70dfa74.jpg?v=1763343712","url":"https:\/\/willardshvacsupply.com\/products\/sp735l-guaranteed-working-tested-good-control-board-ignition-module-18g9101","provider":"Willard's HVAC Supply","version":"1.0","type":"link"}