{"product_id":"carrier-transformer-fb4cnp030l00aaaa","title":"OEM Carrier Transformer Replacement for Model FB4CNP030L00AAAA","description":"\u003cdiv\u003e\n\u003ch1\u003eOEM Carrier Transformer Replacement for Model FB4CNP030L00AAAA\u003c\/h1\u003e\n\u003cp\u003eThis OEM Carrier transformer steps line voltage down to the 24V control voltage that drives the control board, thermostat, and relays inside your FB4CNP030L00AAAA fan coil air handler. When it fails, the low-voltage control circuit loses power entirely, producing a dead thermostat and a system that won't start on a call for heating or cooling. A genuine Carrier transformer restores the correct secondary output and protects the components it powers from running on bad voltage. This unit matches the FB4CNP030L00AAAA's VA rating and mounting layout for an exact fit. Replacement is an easy-to-moderate task for a trained technician: shut off power, mark the primary and secondary lead colors, swap the transformer, and confirm 24V at the secondary terminals. Choosing OEM eliminates the rating and wiring mismatches common with generic substitutes. Order before 3PM CST and your part ships the same day, keeping downtime to a minimum. Every transformer arrives new and ready to install with genuine Carrier fit and quality.\u003c\/p\u003e\n\u003ch2\u003eCompatibility\u003c\/h2\u003e\n\u003cp\u003eThis part is compatible with Carrier model FB4CNP030L00AAAA.\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":62950087655795,"sku":"carrier-transformer-fb4cnp030l00aaaa","price":44.95,"currency_code":"USD","in_stock":true}],"url":"https:\/\/nationalhvacparts.com\/products\/carrier-transformer-fb4cnp030l00aaaa","provider":"National HVAC Parts","version":"1.0","type":"link"}