{"product_id":"carrier-hc1cjx048000aaaa-control-board-6ymr4l","title":"OEM Carrier Defrost Control Board for HC1CJX048000AAAA — CESO110063-02","description":"\u003ch1\u003eOEM Carrier Defrost Control Board CESO110063-02 for Model HC1CJX048000AAAA\u003c\/h1\u003e\u003cp\u003eThis is the factory OEM defrost control board (part number \u003cstrong\u003eCESO110063-02\u003c\/strong\u003e) for the \u003cstrong\u003eCarrier HC1CJX048000AAAA\u003c\/strong\u003e heat pump. The defrost control board monitors outdoor coil temperature and ambient conditions, initiating and terminating defrost cycles to prevent ice buildup on the outdoor coil. When this board fails, you may experience a unit stuck in defrost mode, failure to initiate defrost at all, erratic reversing valve operation, or complete system lockout — all of which result in reduced heating efficiency or no heat output during cold weather.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecs:\u003c\/strong\u003e OEM Part No. CESO110063-02 | Designed for 4-ton (048) Carrier heat pump platform | 24V control circuit compatible | Factory-programmed defrost timing and termination logic\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM vs Generic:\u003c\/strong\u003e This is a genuine Carrier OEM board with factory-matched firmware and termination thresholds. Aftermarket boards may use generic defrost timing that causes premature or insufficient defrost cycles, accelerating coil damage and compressor wear over time.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall Difficulty: 3\/5\u003c\/strong\u003e — Requires disconnecting low-voltage control wiring and high-voltage supply. Always shut off power at the disconnect before servicing. Tools needed: flathead and Phillips screwdrivers, needle-nose pliers, multimeter, phone or camera to photograph existing wiring before removal. Label all wires prior to disconnecting.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWarranty:\u003c\/strong\u003e 1-year OEM factory warranty against defects. In-stock and ships same business day from our warehouse.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eCompatibility:\u003c\/strong\u003e Engineered specifically for the Carrier \u003cstrong\u003eHC1CJX048000AAAA\u003c\/strong\u003e 4-ton heat pump condenser. Always verify the OEM part number \u003cstrong\u003eCESO110063-02\u003c\/strong\u003e against your existing board's label before ordering to ensure an exact match. Not sure it fits? Our HVAC parts specialists will confirm fitment before you purchase — no guesswork required.\u003c\/p\u003e","brand":"Carrier","offers":[{"title":"OEM","offer_id":62909334454643,"sku":"CARRIE-HC1CJX048000AAAA-CONTROL_BOARD-CESO110063-02","price":102.0,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62909334487411,"sku":"CARRIE-HC1CJX048000AAAA-CONTROL_BOARD-CESO110063-02-GEN","price":60.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0984\/1190\/5395\/files\/nhvac-control-board-defrost-CESO110063-02_e17ba9c3-17b8-43f8-baf4-d99836d76d02.jpg?v=1782912711","url":"https:\/\/nationalhvacparts.com\/products\/carrier-hc1cjx048000aaaa-control-board-6ymr4l","provider":"National HVAC Parts","version":"1.0","type":"link"}