{"product_id":"carrier-transformer-fa4cnc030010aaaa","title":"OEM Carrier Transformer for Fan Coil Model FA4CNC030010AAAA","description":"\u003cdiv\u003e\n\u003ch1\u003eOEM Carrier Transformer for Fan Coil Model FA4CNC030010AAAA\u003c\/h1\u003e\n\u003cp\u003eThis genuine OEM Carrier transformer converts line voltage into the low-voltage control power that runs the thermostat, relays, and control board in your FA4CNC030010AAAA fan coil. A failed transformer cuts power to the entire 24V control circuit, leaving the thermostat dark and the system unresponsive to any heating or cooling demand. Manufactured to exact factory primary and secondary ratings, this replacement restores stable control voltage and protects downstream electronics from the irregularities that off-brand transformers can introduce. Installation is moderate and should be done by an HVAC professional: disconnect power at the breaker, label and transfer the primary and secondary leads, and mount the new transformer, usually a 30-45 minute task. Check your existing unit's VA rating and wiring before installing. Using the correct OEM Carrier transformer ensures reliable control operation and protects your board and thermostat from damage. We ship same-day on orders placed before 3PM CST to keep your repair moving. Order the right transformer for your FA4CNC030010AAAA now.\u003c\/p\u003e\n\u003ch2\u003eCompatibility\u003c\/h2\u003e\n\u003cp\u003eThis part is compatible with Carrier model FA4CNC030010AAAA.\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":62955850039667,"sku":"carrier-transformer-fa4cnc030010aaaa","price":49.95,"currency_code":"USD","in_stock":true}],"url":"https:\/\/nationalhvacparts.com\/products\/carrier-transformer-fa4cnc030010aaaa","provider":"National HVAC Parts","version":"1.0","type":"link"}