{"product_id":"carrier-transformer-fb4cnf030l00adaa","title":"OEM Carrier Transformer 40VA 24V for Model FB4CNF030L00ADAA Unit","description":"\u003cdiv\u003e\n\u003ch1\u003eOEM Carrier Transformer 40VA 24V for Model FB4CNF030L00ADAA Unit\u003c\/h1\u003e\n\u003cp\u003eThis genuine Carrier transformer supplies the regulated 24-volt control power that your FB4CNF030L00ADAA fan coil depends on to operate the thermostat, relays, and control board. When a transformer burns out, the system typically goes fully dead with no thermostat display and no response to a cooling call, making it a frequent first part to check. Built to original Carrier specifications, this OEM replacement matches the factory primary and secondary windings and mounts in the original location, so installation requires no rewiring or bracket changes. A qualified technician or confident DIYer can usually finish the replacement in about 30 minutes with a screwdriver and nut driver after cutting power at the disconnect. Choosing the authentic part safeguards your downstream control board and preserves Carrier performance and warranty standing. Confirm the VA rating on the existing unit before ordering. Orders placed before 3PM CST ship the same business day from our US warehouse. Covered by our exact-fit guarantee for the FB4CNF030L00ADAA fan coil.\u003c\/p\u003e\n\u003ch2\u003eCompatibility\u003c\/h2\u003e\n\u003cp\u003eThis part is compatible with Carrier model FB4CNF030L00ADAA.\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":62950659588467,"sku":"carrier-transformer-fb4cnf030l00adaa","price":49.95,"currency_code":"USD","in_stock":true}],"url":"https:\/\/nationalhvacparts.com\/products\/carrier-transformer-fb4cnf030l00adaa","provider":"National HVAC Parts","version":"1.0","type":"link"}