{"product_id":"carrier-control-board-fb4asx048000aeaa","title":"OEM Carrier Control Board CESO110057 for Model FB4ASX048000AEAA","description":"\u003cdiv\u003e\n\u003ch1\u003eOEM Carrier Control Board CESO110057 for Model FB4ASX048000AEAA\u003c\/h1\u003e\n\u003cp\u003eThis genuine OEM Carrier control board (CESO110057) governs blower operation and safety logic in your FB4ASX048000AEAA fan coil, interpreting thermostat demands and energizing the motor and relays in the correct sequence. When this board fails, symptoms include a non-responsive fan, continuous blower operation, blown low-voltage fuses, or no heating and cooling at all. This factory-matched replacement is configured to the precise specifications of the FB4ASX048000AEAA, so connector positions, timing, and control logic align with your existing harness. Installation is a moderate-to-advanced task: kill the power, photograph each plug and wire, and move connectors one at a time to prevent errors, then verify any dip-switch or jumper settings match the original board. Allow 30-60 minutes. Since voltage surges and a failing transformer are common culprits, inspect the low-voltage circuit before installing to protect your new board. Restore precise, trouble-free system control with a part built to OEM standard. In stock and ships same-day when you order before 3PM CST.\u003c\/p\u003e\n\u003ch2\u003eCompatibility\u003c\/h2\u003e\n\u003cp\u003eThis part is compatible with Carrier model FB4ASX048000AEAA.\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":62951882522995,"sku":"carrier-control-board-fb4asx048000aeaa","price":219.95,"currency_code":"USD","in_stock":true}],"url":"https:\/\/nationalhvacparts.com\/products\/carrier-control-board-fb4asx048000aeaa","provider":"National HVAC Parts","version":"1.0","type":"link"}