{"product_id":"carrier-ha1cjx042000abaa-control-board-6ymr4l","title":"OEM Carrier Defrost Control Board CESO110063-02 — HA1CJX042000ABAA","description":"\u003ch1\u003eOEM Carrier Defrost Control Board CESO110063-02 for Model HA1CJX042000ABAA\u003c\/h1\u003e\u003cp\u003eThis is the factory OEM defrost control board (part number \u003cstrong\u003eCESO110063-02\u003c\/strong\u003e) for the \u003cstrong\u003eCarrier HA1CJX042000ABAA\u003c\/strong\u003e heat pump system. The defrost control board monitors outdoor coil temperature and ambient conditions, initiating timed defrost cycles to prevent ice buildup on the outdoor coil. When this board fails, common symptoms include a continuously iced outdoor coil, failure to enter or exit defrost mode, loss of heating capacity in cold weather, or a system that locks out entirely and won't run. Replacing the defrost control board with the correct OEM part restores factory-programmed defrost logic and protects the compressor from damage caused by uncontrolled ice accumulation.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecs:\u003c\/strong\u003e OEM part number CESO110063-02 | Factory-matched defrost timing and temperature logic | Designed for Carrier HA1CJX042000ABAA 3.5-ton heat pump | Compatible with 24V control circuit\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM vs Generic:\u003c\/strong\u003e OEM boards use Carrier's exact firmware and component ratings, ensuring precise defrost intervals and reliable termination logic. Aftermarket boards frequently use approximated timing and lower-grade relays, leading to premature failure or improper defrost behavior that can void equipment warranties.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall difficulty: 3\/5\u003c\/strong\u003e — Disconnect power at the breaker before beginning. Tools needed: Phillips and flathead screwdrivers, needle-nose pliers, multimeter, phone or camera to photograph all wiring connections prior to removal. Label every wire before disconnecting from the old board.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWarranty:\u003c\/strong\u003e 1-year OEM manufacturer warranty against defects. In-stock units ship same business day when ordered before 3 PM local time.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eCompatibility:\u003c\/strong\u003e Engineered specifically for the Carrier \u003cstrong\u003eHA1CJX042000ABAA\u003c\/strong\u003e heat pump. Always verify your existing board's part number against \u003cstrong\u003eCESO110063-02\u003c\/strong\u003e before ordering. If you need fitment confirmation, our HVAC parts specialists are available to verify compatibility before you purchase — no guesswork required.\u003c\/p\u003e","brand":"Carrier","offers":[{"title":"OEM","offer_id":62909354475891,"sku":"CARRIE-HA1CJX042000ABAA-CONTROL_BOARD-CESO110063-02","price":102.0,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62909354508659,"sku":"CARRIE-HA1CJX042000ABAA-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_943bac6f-1334-4787-8d45-cbd11d70bf04.jpg?v=1782912627","url":"https:\/\/nationalhvacparts.com\/products\/carrier-ha1cjx042000abaa-control-board-6ymr4l","provider":"National HVAC Parts","version":"1.0","type":"link"}