{"product_id":"york-johnson-controls-s1-33101975102-defrost-control-board-genuine-oem-heat-pump-defrost-control-board","title":"York \/ Johnson Controls S1-33101975102 Defrost Control Board – Genuine OEM Heat Pump Defrost Control Board","description":"\u003ch1 class=\"MsoNormal\"\u003e\u003cb\u003eYork \/ Johnson Controls S1-33101975102 Defrost Control Board – Genuine OEM Heat Pump Defrost Control Board\u003c\/b\u003e\u003c\/h1\u003e\n\u003cp class=\"MsoNormal\"\u003eThe York S1-33101975102 Defrost Control Board is a genuine OEM electronic defrost control board engineered to manage defrost operations in residential and light commercial heat pump systems. Designed to monitor outdoor coil conditions and automatically initiate defrost cycles when necessary, this control board helps maintain efficient heating performance and protects outdoor coils from excessive frost accumulation.\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003eBuilt to OEM specifications for precise compatibility and reliable operation, the S1-33101975102 control board coordinates compressor, outdoor fan, and reversing valve functions during defrost cycles. Its factory-programmed logic ensures proper heat pump operation, improved system efficiency, and dependable cold-weather performance.\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\u003eAutomatic Defrost Cycle Management\u003c\/b\u003e – Controls heat pump defrost operation for maximum efficiency\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003e• \u003cb\u003eGenuine OEM Compatibility\u003c\/b\u003e – Designed specifically for York, Coleman, Luxaire, and Johnson Controls systems\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003e• \u003cb\u003eOutdoor Coil Frost Protection\u003c\/b\u003e – Prevents excessive frost buildup that can reduce heating capacity\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003e• \u003cb\u003eIntegrated System Control\u003c\/b\u003e – Coordinates key heat pump components during defrost 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 S1-33101975102\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003e• \u003cb\u003eAlternate Part Number:\u003c\/b\u003e 286DB9752\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\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 Defrost Timing and Outdoor Unit Operation\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003e• \u003cb\u003eControl Type:\u003c\/b\u003e Electronic Defrost Control Board\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: Inspect Defrost Sensors Before Replacing the Board\u003c\/b\u003e\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003eMany defrost-related service calls are caused by failed coil sensors, damaged low-voltage wiring, or poor electrical connections rather than the control board itself. Before replacing the board, inspect all sensors and verify proper voltage to ensure accurate diagnosis.\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 S1-33101975102 is a direct OEM replacement for the following applications:\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003e• \u003cb\u003eOEM Number:\u003c\/b\u003e S1-33101975102\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003e• \u003cb\u003eAlternate Number:\u003c\/b\u003e 286DB9752\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 Electronic Defrost Control Board\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 part 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":53422296990059,"sku":"S1-33101975102","price":312.79,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0922\/9683\/9531\/files\/S1-33101975102.jpg?v=1782333237","url":"https:\/\/tophvacparts.com\/products\/york-johnson-controls-s1-33101975102-defrost-control-board-genuine-oem-heat-pump-defrost-control-board","provider":"HVAC Parts and Equipment Depot Open To Homeowners and Contractors","version":"1.0","type":"link"}