{"product_id":"lennox-a55-m1-6-rev-c-furnace-control-circuit-board-34m52-hb02485d","title":"LENNOX A55 M1-6 REV C Furnace Control Circuit Board 34M52 HB02485D","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• Main control board model A55 M1-6 REV C, part number 34M52\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003e• Supports up to four stages of heating using room sensors or thermostats   • Compatible with modulating gas valves and multi-zone VAV (Variable Air Volume) systems   • Interfaces with DDC (Direct Digital Control), 24V thermostats, BACnet MS\/TP and IP, LONTalk protocols (factory \u0026amp; field options)   • Features safety switch input, service relay output, and thermostat bounce delay protection   • Includes options for economizer control and return air temperature limit control   • Smoke alarm modes include unit off, positive pressure, negative pressure, and purge settings   • Provides \"Strike Three\" protection and gas valve time delay between stages   • Minimum compressor run time enforcement   • Power supply input: 24 VAC typical for control circuits   • Utilized in Lennox models including LGT and LCT series with multiple compressor and condenser configurations   • Designed to enhance system reliability and controller integration in residential and commercial HVAC units\u003c\/p\u003e\u003cp\u003eThis control board is critical for the efficient and safe operation of compatible Lennox furnaces, supporting advanced control schemes for improved comfort and energy management.\u003c\/p\u003e","brand":"Lennox","offers":[{"title":"Default Title","offer_id":43672928911469,"sku":"12841","price":285.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0637\/2419\/1853\/files\/s-l800_7f020073-230d-41c6-b6c5-8fe5690f7491.jpg?v=1763343443","url":"https:\/\/willardshvacsupply.com\/products\/lennox-a55-m1-6-rev-c-furnace-control-circuit-board-34m52-hb02485d","provider":"Willard's HVAC Supply","version":"1.0","type":"link"}