{"product_id":"lennox-vsp2-1-lb-66434-56j6501-furnace-control-circuit-board","title":"LENNOX VSP2-1 LB-66434 56J6501 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: LB-66434 (also known as 56J6501)\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003e• Control Type: Integrated furnace control circuit board with VSP2-1 blower motor control functionality   • Application: Controls ignition sequence, blower motor speeds, and safety limit switches in Lennox furnaces   • Blower Control: Supports variable speed blower motors with multiple speed jumpers for low, heat, and high-speed settings   • Diagnostic Features: Dual LED indicators for operational status and troubleshooting error codes   • Safety Controls: Monitors primary and secondary limits, includes fan and ignition lockout protections   • Compatibility: Designed specifically for certain Lennox furnace models requiring LB-66434 \/ 56J6501 replacement boards   • Dimensions: Typically fits within standard Lennox furnace control mounts (refer to exact furnace model for fit)   • Voltage: Operates on standard furnace control board voltage, typically 24 VAC control circuits   • Manufacturer: Lennox, OEM part for furnace control systems   • Function: Manages ignition operations including hot surface ignitor control and valve sequencing for natural gas or propane burners   • Additional Outputs: Terminals for accessory control and continuous fan operation during cooling and heating cycles\u003c\/p\u003e\u003cp\u003eThis board is essential for maintaining reliable furnace operation, proper ignition timing, and efficient blower control on compatible Lennox heating systems.\u003c\/p\u003e","brand":"Lennox","offers":[{"title":"Default Title","offer_id":43673093701741,"sku":"14058","price":370.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0637\/2419\/1853\/files\/s-l800_3311b9fb-0b41-4688-9934-6398f85b8b58.jpg?v=1763347660","url":"https:\/\/willardshvacsupply.com\/products\/lennox-vsp2-1-lb-66434-56j6501-furnace-control-circuit-board","provider":"Willard's HVAC Supply","version":"1.0","type":"link"}