{"product_id":"oem-lennox-defrost-control-board-69j80","title":"OEM Lennox Defrost Control Board — 69J80","description":"\u003cp\u003eThe genuine OEM Lennox \u003cstrong\u003e69J80\u003c\/strong\u003e defrost control board manages the defrost cycle on your Lennox heat pump. It monitors coil temperature and elapsed run time, then reverses the system and energizes the outdoor components to melt frost and ice off the outdoor coil so the unit maintains heating efficiency in cold weather.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eCommon failure symptoms:\u003c\/strong\u003e the outdoor coil ices over and stays frozen, the unit gets stuck in defrost or never defrosts, poor heating output, the reversing valve or fan behaves erratically, or the board shows no output to key components. A faulty defrost control commonly leads to frozen coils and lost heating capacity.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhy OEM matters:\u003c\/strong\u003e the Lennox \u003cstrong\u003e69J80\u003c\/strong\u003e is programmed with the correct defrost timing, sensor thresholds, and relay logic for your specific system. Installing the factory board ensures accurate defrost initiation and termination, protecting the compressor and coil while preserving efficiency. Generic boards often mismatch on timing or terminals and can shorten equipment life.\u003c\/p\u003e","brand":"Lennox","offers":[{"title":"Default Title","offer_id":63081098019187,"sku":"LNX-69J80","price":39.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0984\/1190\/5395\/files\/nhvac-control-board-defrost-LNX-69J80.jpg?v=1783760060","url":"https:\/\/nationalhvacparts.com\/products\/oem-lennox-defrost-control-board-69j80","provider":"National HVAC Parts","version":"1.0","type":"link"}