{"product_id":"carrier-control-board-fb4bsf018000aaaa","title":"OEM Carrier Control Board HK42FZ009 for Model FB4BSF018000AAAA","description":"\u003cdiv\u003e\n\u003ch1\u003eOEM Carrier Control Board HK42FZ009 for Model FB4BSF018000AAAA\u003c\/h1\u003e\n\u003cp\u003eThis OEM Carrier control board (HK42FZ009) is the integrated furnace control that manages blower timing, safety interlocks, and fan operation on your Carrier FB4BSF018000AAAA fan coil unit. When your air handler fails to start the blower, cycles erratically, or trips on a fault code, a failed control board is the most common cause. This factory-original board ensures exact relay logic, voltage tolerances, and connector pinouts that aftermarket boards cannot guarantee, protecting your motor and transformer from damage. Installation is moderate: shut off power, label and transfer the wiring harness, swap the mounting screws, and reconnect — most technicians complete it in 30-45 minutes. We recommend a qualified HVAC professional for safe handling of line-voltage connections. Backed by genuine Carrier quality for reliable, long-term performance and full compatibility with your specific model. In stock and ready to ship — orders placed before 3PM CST ship the same business day so you can restore comfort fast. Buy with confidence from NationalHVACParts.com, your trusted source for genuine Carrier replacement parts.\u003c\/p\u003e\n\u003ch2\u003eCompatibility\u003c\/h2\u003e\n\u003cp\u003eThis part is compatible with Carrier model FB4BSF018000AAAA.\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":62951071744371,"sku":"carrier-control-board-fb4bsf018000aaaa","price":189.95,"currency_code":"USD","in_stock":true}],"url":"https:\/\/nationalhvacparts.com\/products\/carrier-control-board-fb4bsf018000aaaa","provider":"National HVAC Parts","version":"1.0","type":"link"}