{"product_id":"carrier-transformer-fb4cnp042000aaaa","title":"OEM Carrier Transformer ET01EZ238 for Model FB4CNP042000AAAA","description":"\u003cdiv\u003e\n\u003ch1\u003eOEM Carrier Transformer ET01EZ238 for Model FB4CNP042000AAAA\u003c\/h1\u003e\n\u003cp\u003eThis OEM Carrier transformer (ET01EZ238) reduces line voltage to the 24V control power that energizes the thermostat, control board, and relays in the Carrier FB4CNP042000AAAA fan coil unit. A dead transformer typically means a blank thermostat, an unresponsive air handler, and no blower operation — making it one of the first components to test in a no-power situation. This genuine Carrier replacement is built to the correct voltage and VA specifications, delivering steady control power and protecting your system's electronics. Installation is moderate and should be done by a qualified technician: disconnect power, label the primary and secondary leads, mount the replacement, and reconnect precisely. Verify there's no shorted low-voltage wiring before installing to avoid a repeat failure. The OEM transformer ensures exact fit and long-term reliability that generic parts often lack. We keep this part in stock and ship same-day on every order placed before 3PM CST. Restore control power to your FB4CNP042000AAAA fast with the genuine Carrier transformer.\u003c\/p\u003e\n\u003ch2\u003eCompatibility\u003c\/h2\u003e\n\u003cp\u003eThis part is compatible with Carrier model FB4CNP042000AAAA.\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":62950022218099,"sku":"carrier-transformer-fb4cnp042000aaaa","price":49.95,"currency_code":"USD","in_stock":true}],"url":"https:\/\/nationalhvacparts.com\/products\/carrier-transformer-fb4cnp042000aaaa","provider":"National HVAC Parts","version":"1.0","type":"link"}