{"product_id":"1097-83-503a-honeywell-lennox-furnace-main-control-board-24-vac","title":"1097-83-503A | Honeywell Lennox Furnace Main Control Board 24 VAC","description":"\u003ch4\u003eDescription \u003c\/h4\u003e\n\u003cp data-start=\"144\" data-end=\"396\"\u003eHoneywell 1097-83-503A is a discontinued OEM main control board designed for use in select Lennox furnace systems. It operates at 24 VAC, 50\/60 Hz, with a maximum current draw of 0.5 A, managing ignition, blower, and safety control functions in heating applications.\u003c\/p\u003e\n\u003cp data-start=\"284\" data-end=\"574\" class=\"\"\u003e \u003c\/p\u003e\n\u003cp data-start=\"284\" data-end=\"574\" class=\"\"\u003e \u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications \u003c\/h4\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCondition\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eNew\/Never Used Surplus\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eBrand\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eHoneywell\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCategory\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003ePLCs\/Machine Control\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003ePart Number\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e1097-83-503A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSubcategory\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003ePC Board PLC\/Add-On Board\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eVoltage\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e24 VAC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eFrequency\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e50\/60 Hz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMaximum current\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e0.5 A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eApplication\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eMain control board for select Lennox furnaces\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eFunction\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eControls ignition, blower, inducer, and safety interlocks\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCompatible equipment\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eLennox furnace models specified by OEM\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eStatus\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eDiscontinued by manufacturer\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eDesign type\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003ePCB-mounted control module\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eWeight\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e0.65 lb\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch4\u003eInformation About \u003cspan data-sheets-root=\"1\"\u003e1097-83-503A\u003c\/span\u003e\n\u003c\/h4\u003e\n\u003cp\u003eThe 1097-83-503A is a main control PCB used in certain Lennox furnace models, manufactured by Honeywell for direct OEM integration. It is powered by 24 VAC and supports both 50 Hz and 60 Hz operation, making it adaptable for various regional electrical standards. Its control logic governs key furnace operations, including inducer startup, ignition sequencing, blower fan control, and safety interlocks. This model has been discontinued by the manufacturer, so service replacements typically require sourcing equivalent boards approved for the specific Lennox furnace model.\u003c\/p\u003e\n\u003cp data-end=\"1011\" data-start=\"992\"\u003e\u003cstrong data-end=\"1009\" data-start=\"992\"\u003eKey Features:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eOEM furnace integration: Designed specifically for select Lennox furnace applications.\u003c\/li\u003e\n\u003cli\u003e24 VAC operation: Low-voltage control circuit suitable for residential HVAC systems.\u003c\/li\u003e\n\u003cli\u003eDual frequency support: Operates at both 50 Hz and 60 Hz for international compatibility.\u003c\/li\u003e\n\u003cli\u003eCompact PCB design: Fits within furnace control compartments without modification.\u003c\/li\u003e\n\u003cli\u003eSafety monitoring: Provides control for ignition lockouts and protective shutdowns.\u003c\/li\u003e\n\u003cli\u003eMulti-function control: Manages inducer, ignition, blower, and gas valve sequences.\u003c\/li\u003e\n\u003cli\u003eManufacturer discontinued: No longer produced; requires compatible replacement sourcing.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThe 1097-83-503A delivers the control precision and reliability required for OEM Lennox furnace operation.\u003c\/p\u003e","brand":"Honeywell","offers":[{"title":"Default Title","offer_id":49105245962496,"sku":"1097-83-503A","price":836.43,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0388\/5331\/2557\/files\/s-l1600_a5805000-3596-4e81-baf1-9f4007d77e06.webp?v=1785543429","url":"https:\/\/alotechparts.com\/products\/1097-83-503a-honeywell-lennox-furnace-main-control-board-24-vac","provider":"Alo Tech Solutions","version":"1.0","type":"link"}