{"product_id":"50a66-843-white-rodgers-emerson-furnace-control-circuit-board","title":"50A66-843 White Rodgers EMERSON 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• Model Number: 50A66-843 (also known as 21D83M-843 Integrated Furnace Control Board)\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003e• Manufacturer: White-Rodgers (Emerson)  • Compatible with Lennox 83M00 series furnaces  • Input Voltage: 24-25 VAC, 50\/60 Hz, 0.45 - 0.5 A max  • Controls: Gas valve, hot surface ignitor, blower motor, inducer fan, humidifier, and electronic air cleaner  • Fan Speeds: 3-speed fan control (heating, cooling, continuous fan)  • Diagnostic Indicator: LED flash codes for system troubleshooting  • Timing Specifications:   – Pre-purge: 15 seconds   – Heat delay to fan ON: 45 seconds   – Heat delay to fan OFF: selectable 60\/90\/120\/180 seconds   – Cool delay to fan ON: 2 seconds   – Cool delay to fan OFF: selectable 2\/45 seconds   – Auto reset: 60 minutes  • Operating Temperature Range: -40 to +175°F (-40 to +79°C)  • Humidity Range: 5% to 93% non-condensing  • Safety Features: Remote flame sensing, integrated lockout for ignition failure  • Package Includes: 1 ignition control board, wiring harnesses (9-pin to 12-pin and 4-pin to 6-pin), mounting panel  • Dimensions: Approximately 11.5 x 7.7 x 2.5 inches  • Certification: CSA certified for commercial and residential HVAC applications\u003c\/p\u003e","brand":"White Rodgers","offers":[{"title":"Default Title","offer_id":43672958074989,"sku":"13164","price":239.97,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0637\/2419\/1853\/files\/s-l800_13741e6b-cd7d-45fd-9513-4c4158d3598f.jpg?v=1763344561","url":"https:\/\/willardshvacsupply.com\/products\/50a66-843-white-rodgers-emerson-furnace-control-circuit-board","provider":"Willard's HVAC Supply","version":"1.0","type":"link"}