{"product_id":"20556101-lennox-armstrong-1170-21-furnace-control-circuit-board","title":"20556101 LENNOX Armstrong 1170-21 Furnace Control Circuit Board","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· OEM Lennox Armstrong furnace control circuit board\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003e· Part Number: 20556101 · Model: 1170-21 · Controls ignition timing and sequencing · Manages blower motor operation · Implements safety sequences and lockout functions · Integrates with flame sensors for flame detection and verification · Supports gas furnace operation · Compatible with Lennox and Armstrong furnace systems · Approximately 1 inch thickness · Board dimensions and exact voltage specifications available upon request\u003c\/p\u003e","brand":"Lennox","offers":[{"title":"Default Title","offer_id":43673148194925,"sku":"14413","price":240.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0637\/2419\/1853\/files\/s-l800_bcc068ca-b19e-4748-b057-c7c37570afc8.jpg?v=1763348890","url":"https:\/\/willardshvacsupply.com\/products\/20556101-lennox-armstrong-1170-21-furnace-control-circuit-board","provider":"Willard's HVAC Supply","version":"1.0","type":"link"}