{"product_id":"carrier-transformer-fb4cnp030000aaaa","title":"OEM Carrier Transformer Replacement for Model FB4CNP030000AAAA","description":"\u003cdiv\u003e\n\u003ch1\u003eOEM Carrier Transformer Replacement for Model FB4CNP030000AAAA\u003c\/h1\u003e\n\u003cp\u003eThis OEM Carrier transformer converts incoming line voltage into the 24V control voltage that powers the control board, thermostat, and relays in your FB4CNP030000AAAA fan coil air handler. A burned-out transformer is a frequent cause of a dead control circuit, a blank thermostat, and a unit that won't respond to any call for heating or cooling. Installing a genuine Carrier transformer restores the proper secondary voltage and protects the electronics it feeds from damage. This part matches the FB4CNP030000AAAA's VA rating and mounting footprint for an exact, no-modification fit. It's an easy-to-moderate repair for a qualified technician: turn off power, record the primary and secondary lead colors, swap the transformer, and confirm 24V at the secondary before reconnecting. OEM ensures you avoid the rating mismatches and wiring confusion of generic parts. Order before 3PM CST and your transformer ships the same day so the repair finishes fast. Every unit ships new and ready to install with genuine Carrier reliability.\u003c\/p\u003e\n\u003ch2\u003eCompatibility\u003c\/h2\u003e\n\u003cp\u003eThis part is compatible with Carrier model FB4CNP030000AAAA.\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":62950088180083,"sku":"carrier-transformer-fb4cnp030000aaaa","price":44.95,"currency_code":"USD","in_stock":true}],"url":"https:\/\/nationalhvacparts.com\/products\/carrier-transformer-fb4cnp030000aaaa","provider":"National HVAC Parts","version":"1.0","type":"link"}