{"product_id":"lennox-international-105250-02-furnace-control-circuit-board-a59","title":"Lennox International 105250-02 Furnace Control Circuit Board (A59)","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: 105250-02 (A59) Furnace Control Circuit Board\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003e• Compatible with Lennox furnace models employing A59 control systems  • Controls multi-stage heating and cooling operations, including up to four heating stages and four cooling stages (with add-on boards)  • Voltage: Operates on standard 24 VAC control power  • Integrated smart diagnostics with a 7-segment LED display for status and troubleshooting  • Communication interfaces: BACnet IP\/MS-TP, LONTalk (optional), Lennox S-BUS for wireless sensor compatibility  • Features multiple safety and operational controls such as flame rollout switches, gas valve time delay between stages, thermostat bounce delay, and safety switch input  • Service relay output and blower control with adjustable on\/off delays  • Dimensions and weight are consistent with typical Lennox furnace control boards, designed for easy installation and field wiring with keyed screw terminals (approx. 6” x 6”, under 1 lb)  • Supports multiple thermostat wiring configurations including DDC and 24V thermostat inputs  • Includes control safeguards: compressor time-off delay, minimum compressor run time, smoke alarm modes with selectable pressure settings, and system lockouts\u003c\/p\u003e","brand":"Lennox","offers":[{"title":"Default Title","offer_id":43748041785453,"sku":"16990","price":330.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0637\/2419\/1853\/files\/s-l800_57c7221c-4a57-4d76-b4ac-30d4b6d1f43c.jpg?v=1764976364","url":"https:\/\/willardshvacsupply.com\/products\/lennox-international-105250-02-furnace-control-circuit-board-a59","provider":"Willard's HVAC Supply","version":"1.0","type":"link"}