{"product_id":"carrier-control-board-fb4asa042000aaaa","title":"OEM Carrier Control Board HK42FZ Series for Model FB4ASA042000AAAA","description":"\u003cdiv\u003e\n\u003ch1\u003eOEM Carrier Control Board HK42FZ Series for Model FB4ASA042000AAAA\u003c\/h1\u003e\n\u003cp\u003eThis OEM Carrier control board (HK42FZ-compatible series) is the integrated furnace control module that manages blower operation, fan timing, and safety interlocks in your Carrier FB4ASA042000AAAA fan coil air handler. It coordinates signals between the thermostat, blower motor, and electric heat elements, ensuring proper sequencing and protecting the system from fault conditions. A failing board often causes no-heat, no-fan, or intermittent operation. This direct-replacement part is engineered to factory specifications for an exact fit and reliable performance with your specific unit. Installation is moderate difficulty and best handled by an HVAC professional: power down the unit, photograph the wiring, transfer connectors to the matching terminals, and secure the board to the original standoffs. No reprogramming required. Always confirm the part number printed on your existing board before ordering. In stock and ships same-day when you order before 3PM CST, so you can get your air handler back online fast. Backed by genuine OEM quality for long-term durability and peace of mind.\u003c\/p\u003e\n\u003ch2\u003eCompatibility\u003c\/h2\u003e\n\u003cp\u003eThis part is compatible with Carrier model FB4ASA042000AAAA.\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":62952364573043,"sku":"carrier-control-board-fb4asa042000aaaa","price":186.95,"currency_code":"USD","in_stock":true}],"url":"https:\/\/nationalhvacparts.com\/products\/carrier-control-board-fb4asa042000aaaa","provider":"National HVAC Parts","version":"1.0","type":"link"}