{"product_id":"carrier-control-board-fb4bsf042l00aaaa","title":"OEM Carrier Control Board for Model FB4BSF042L00AAAA Fan Coil","description":"\u003cdiv\u003e\n\u003ch1\u003eOEM Carrier Control Board for Model FB4BSF042L00AAAA Fan Coil\u003c\/h1\u003e\n\u003cp\u003eThis genuine OEM Carrier control board is the core circuit board that controls blower activation, fan speed sequencing, and safety functions in your Carrier FB4BSF042L00AAAA fan coil air handler. A failing board commonly shows up as a blower that won't start, random shutdowns, or lost thermostat communication. Built to exact Carrier engineering standards for the FB4BSF042L00AAAA, this factory-original part ensures accurate relay timing, stable voltage handling, and seamless integration with your indoor and outdoor equipment. Installation is moderate in difficulty: cut power to the unit, take a reference photo of the wiring, transfer each harness connector to the corresponding terminal, and confirm DIP-switch positions match the old board. We recommend a licensed HVAC professional. Genuine OEM boards protect your warranty and outlast aftermarket substitutes that frequently misfire. This control board is in stock and ships same-day on orders placed before 3PM CST, so comfort is restored fast. Get the exact factory-matched part designed for your specific model.\u003c\/p\u003e\n\u003ch2\u003eCompatibility\u003c\/h2\u003e\n\u003cp\u003eThis part is compatible with Carrier model FB4BSF042L00AAAA.\u003c\/p\u003e\n\u003ch2\u003eShipping\u003c\/h2\u003e\n\u003cp\u003eSame-day shipping before 3 PM CST. 30-day returns on uninstalled parts.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Carrier","offers":[{"title":"Default Title","offer_id":62951016563059,"sku":"carrier-control-board-fb4bsf042l00aaaa","price":249.95,"currency_code":"USD","in_stock":true}],"url":"https:\/\/nationalhvacparts.com\/products\/carrier-control-board-fb4bsf042l00aaaa","provider":"National HVAC Parts","version":"1.0","type":"link"}