{"product_id":"carrier-control-board-fb4bsb048000aaaa","title":"OEM Carrier Control Board HK42FZ009 for Model FB4BSB048000AAAA","description":"\u003cdiv\u003e\n\u003ch1\u003eOEM Carrier Control Board HK42FZ009 for Model FB4BSB048000AAAA\u003c\/h1\u003e\n\u003cp\u003eThis OEM Carrier control board (HK42FZ009) controls blower operation, fan timing, and safety logic on your Carrier FB4BSB048000AAAA fan coil air handler. If your blower won't start, the system cycles on and off rapidly, or fault codes appear, a failing control board is the most likely cause. This factory-original board provides the precise relay logic, voltage ratings, and harness connectors built specifically for your model — delivering reliability that aftermarket boards simply can't promise. The installation is moderate in difficulty: disconnect power, label and transfer the wiring, move the mounting screws, and reconnect the new board. Most technicians finish in 30-45 minutes, though line-voltage work is best left to a licensed HVAC professional. Restore consistent comfort and protect downstream components with a genuine Carrier replacement engineered for durability. We stock this part for immediate shipment, and every order placed before 3PM CST goes out the same business day. Shop with confidence at NationalHVACParts.com for authentic Carrier parts and rapid delivery.\u003c\/p\u003e\n\u003ch2\u003eCompatibility\u003c\/h2\u003e\n\u003cp\u003eThis part is compatible with Carrier model FB4BSB048000AAAA.\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":62951072530803,"sku":"carrier-control-board-fb4bsb048000aaaa","price":189.95,"currency_code":"USD","in_stock":true}],"url":"https:\/\/nationalhvacparts.com\/products\/carrier-control-board-fb4bsb048000aaaa","provider":"National HVAC Parts","version":"1.0","type":"link"}