{"product_id":"carrier-transformer-fb4cnp030l10aaaa","title":"OEM Carrier Transformer Replacement for Model FB4CNP030L10AAAA","description":"\u003cdiv\u003e\n\u003ch1\u003eOEM Carrier Transformer Replacement for Model FB4CNP030L10AAAA\u003c\/h1\u003e\n\u003cp\u003eThis OEM Carrier transformer converts incoming line voltage to the 24V control voltage that powers the control board, thermostat, and relays in your FB4CNP030L10AAAA fan coil air handler. When a transformer burns out, the entire low-voltage control circuit goes dead, leaving you with an unresponsive thermostat and a system that ignores calls for heating or cooling. A genuine Carrier transformer restores the correct secondary voltage and protects the components it feeds. This part matches the FB4CNP030L10AAAA's VA rating and mounting footprint for an exact fit. The replacement is an easy-to-moderate repair for a qualified technician: disconnect power, record the primary and secondary lead colors, swap the unit, and confirm 24V at the secondary. Using OEM avoids the rating mismatches and wiring confusion of generic transformers. Order before 3PM CST and your part ships the same day so the repair gets done quickly. Every transformer is shipped new and ready for installation, backed by genuine Carrier quality and fit.\u003c\/p\u003e\n\u003ch2\u003eCompatibility\u003c\/h2\u003e\n\u003cp\u003eThis part is compatible with Carrier model FB4CNP030L10AAAA.\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":62950087360883,"sku":"carrier-transformer-fb4cnp030l10aaaa","price":44.95,"currency_code":"USD","in_stock":true}],"url":"https:\/\/nationalhvacparts.com\/products\/carrier-transformer-fb4cnp030l10aaaa","provider":"National HVAC Parts","version":"1.0","type":"link"}