{"product_id":"york-johnson-controls-s1-03103892000-defrost-control-board-genuine-oem-2-stage-defrost-circuit-board","title":"York \/ Johnson Controls S1-03103892000 Defrost Control Board – Genuine OEM 2-Stage Defrost Circuit Board","description":"\u003ch1 class=\"MsoNormal\"\u003e\u003cb\u003eYork \/ Johnson Controls S1-03103892000 Defrost Control Board – Genuine OEM 2-Stage Defrost Circuit Board\u003c\/b\u003e\u003c\/h1\u003e\n\u003cp class=\"MsoNormal\"\u003eThe York S1-03103892000 Defrost Control Board is a genuine OEM electronic defrost circuit board engineered to manage defrost operations in residential and light commercial heat pump systems. Designed as a two-stage defrost control board, this component monitors outdoor coil conditions and initiates automatic defrost cycles to maintain efficient heating performance during cold-weather operation.\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003eBuilt to OEM specifications for precise system compatibility and reliable operation, the S1-03103892000 control board coordinates compressor, reversing valve, and outdoor fan functions during defrost cycles. Its factory-programmed logic helps prevent excessive frost accumulation on outdoor coils, improving system efficiency, heating capacity, and equipment reliability.\u003c\/p\u003e\n\u003cdiv class=\"MsoNormal\" align=\"center\" style=\"text-align: center;\"\u003e\u003chr size=\"2\" width=\"100%\" align=\"center\"\u003e\u003c\/div\u003e\n\u003cp class=\"MsoNormal\"\u003e\u003cb\u003eKey Features and Function:\u003c\/b\u003e\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003e• \u003cb\u003eTwo-Stage Defrost Control\u003c\/b\u003e – Manages heat pump defrost cycles for optimal system performance\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003e• \u003cb\u003eGenuine OEM Compatibility\u003c\/b\u003e – Designed specifically for York, Luxaire, Coleman, and Johnson Controls systems\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003e• \u003cb\u003eAutomatic Frost Management\u003c\/b\u003e – Helps prevent outdoor coil ice buildup\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003e• \u003cb\u003eIntegrated System Protection\u003c\/b\u003e – Supports reliable compressor and heat pump operation\u003c\/p\u003e\n\u003cdiv class=\"MsoNormal\" align=\"center\" style=\"text-align: center;\"\u003e\u003chr size=\"2\" width=\"100%\" align=\"center\"\u003e\u003c\/div\u003e\n\u003cp class=\"MsoNormal\"\u003e\u003cb\u003eProduct Details and Key Specifications:\u003c\/b\u003e\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003e• \u003cb\u003ePart Number:\u003c\/b\u003e S1-03103892000\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003e• \u003cb\u003eAlternate Part Number:\u003c\/b\u003e 286B0389\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003e• \u003cb\u003eManufacturer:\u003c\/b\u003e Johnson Controls \/ York (Genuine OEM)\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003e• \u003cb\u003ePart Type:\u003c\/b\u003e Defrost Control Board\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003e• \u003cb\u003eBoard Type:\u003c\/b\u003e 2-Stage Electronic Defrost Circuit Board\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003e• \u003cb\u003eApplication:\u003c\/b\u003e Residential \u0026amp; Light Commercial Heat Pump Systems\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003e• \u003cb\u003eFunction:\u003c\/b\u003e Controls Heat Pump Defrost Cycles and Outdoor Unit Operation\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003e• \u003cb\u003eInstallation Type:\u003c\/b\u003e Direct OEM Replacement\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003e• \u003cb\u003eCompatible Brands:\u003c\/b\u003e York, Coleman, Luxaire, Fraser-Johnston, Guardian\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003e• \u003cb\u003eElectrical Compatibility:\u003c\/b\u003e OEM Factory Matched\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003e• \u003cb\u003eShipping Weight:\u003c\/b\u003e Approx. 1-2 lbs\u003c\/p\u003e\n\u003cdiv class=\"MsoNormal\" align=\"center\" style=\"text-align: center;\"\u003e\u003chr size=\"2\" width=\"100%\" align=\"center\"\u003e\u003c\/div\u003e\n\u003cp class=\"MsoNormal\"\u003e\u003cb\u003e\u003cspan style=\"font-family: 'Segoe UI Emoji',sans-serif; mso-bidi-font-family: 'Segoe UI Emoji';\"\u003e🛠️\u003c\/span\u003e HVAC Depot Pro Tip: Check Sensors Before Replacing the Defrost Board\u003c\/b\u003e\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003eDefrost issues are not always caused by a failed control board. Before replacing the board, inspect the defrost sensor, coil temperature sensor, low-voltage wiring, and outdoor fan motor operation. A defective sensor can prevent proper defrost initiation and mimic board failure.\u003c\/p\u003e\n\u003cdiv class=\"MsoNormal\" align=\"center\" style=\"text-align: center;\"\u003e\u003chr size=\"2\" width=\"100%\" align=\"center\"\u003e\u003c\/div\u003e\n\u003cp class=\"MsoNormal\"\u003e\u003cb\u003eCross-Reference \u0026amp; Compatibility:\u003c\/b\u003e\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003eThe S1-03103892000 is a direct OEM replacement for the following applications:\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003e• \u003cb\u003eOEM Number:\u003c\/b\u003e S1-03103892000\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003e• \u003cb\u003eAlternate Number:\u003c\/b\u003e 286B0389\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003e• \u003cb\u003eApplication Type:\u003c\/b\u003e Heat Pump Defrost Control Boards\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003e• \u003cb\u003eBoard Style:\u003c\/b\u003e 2-Stage Electronic Defrost Control\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003e• \u003cb\u003eCompatible Brands:\u003c\/b\u003e York, Coleman, Luxaire, Fraser-Johnston, Guardian\u003c\/p\u003e\n\u003cdiv class=\"MsoNormal\" align=\"center\" style=\"text-align: center;\"\u003e\u003chr size=\"2\" width=\"100%\" align=\"center\"\u003e\u003c\/div\u003e\n\u003cp class=\"MsoNormal\"\u003e\u003cb\u003eExtensive Model Compatibility List:\u003c\/b\u003e\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003e\u003cb\u003eCompatible Heat Pump Systems:\u003c\/b\u003e\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003e• York Heat Pump Systems\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003e• Coleman Heat Pump Systems\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003e• Luxaire Heat Pump Systems\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003e• Fraser-Johnston Heat Pumps\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003e• Guardian Heat Pump Units\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003e• Residential Split-System Heat Pumps\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003e• Light Commercial Heat Pump Equipment\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003e• Select Johnson Controls HVAC Systems\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003e\u003ci\u003eAlways verify the board number, wiring configuration, and model compatibility before ordering.\u003c\/i\u003e\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003e \u003c\/p\u003e","brand":"York","offers":[{"title":"Default Title","offer_id":53422222475627,"sku":"S1-03103892000","price":291.48,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0922\/9683\/9531\/files\/S1-03103692000.jpg?v=1782331870","url":"https:\/\/tophvacparts.com\/products\/york-johnson-controls-s1-03103892000-defrost-control-board-genuine-oem-2-stage-defrost-circuit-board","provider":"HVAC Parts and Equipment Depot Open To Homeowners and Contractors","version":"1.0","type":"link"}