{"product_id":"carrier-control-board-fx4cnf018t00aaaa","title":"OEM Carrier Control Board Replacement for Model FX4CNF018T00AAAA","description":"\u003cdiv\u003e\n\u003ch1\u003eOEM Carrier Control Board Replacement for Model FX4CNF018T00AAAA\u003c\/h1\u003e\n\u003cp\u003eThis OEM Carrier control board is the genuine factory board that controls blower function, heat staging, and built-in safety logic for the Carrier FX4CNF018T00AAAA fan coil air handler. It processes thermostat signals, energizes the correct blower speed, and continuously monitors limit and door switches to keep the unit operating safely. Typical symptoms of a failing board are a non-running blower, unpredictable fan cycling, or a unit that does not respond to the thermostat at all. Designed specifically as a direct replacement for the FX4CNF018T00AAAA, this board duplicates the original's connector positions and mounting holes, eliminating the need for wiring adapters. Installation is moderate and recommended for a licensed HVAC technician: cut power at the breaker, take a reference photo of the harness, move connectors individually, then restore power and verify operation. A genuine Carrier board protects system performance and warranty coverage. In stock and ready to ship same-day on orders placed before 3PM CST.\u003c\/p\u003e\n\u003ch2\u003eCompatibility\u003c\/h2\u003e\n\u003cp\u003eThis part is compatible with Carrier model FX4CNF018T00AAAA.\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":62942892556659,"sku":"carrier-control-board-fx4cnf018t00aaaa","price":224.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0984\/1190\/5395\/files\/nhvac-control-board-fx4cnf018t00aaaa.jpg?v=1781468214","url":"https:\/\/nationalhvacparts.com\/products\/carrier-control-board-fx4cnf018t00aaaa","provider":"National HVAC Parts","version":"1.0","type":"link"}