{"product_id":"carrier-transformer-fb4cnp042t00aaaa","title":"OEM Carrier Transformer ET01EZ238 for Model FB4CNP042T00AAAA","description":"\u003cdiv\u003e\n\u003ch1\u003eOEM Carrier Transformer ET01EZ238 for Model FB4CNP042T00AAAA\u003c\/h1\u003e\n\u003cp\u003eThis OEM Carrier transformer (ET01EZ238) steps line voltage down to the 24V control voltage that powers your thermostat, contactor, and control board in the Carrier FB4CNP042T00AAAA fan coil unit. A failed transformer is a frequent cause of a completely dead system: no thermostat display, no blower, and no response at the air handler. This genuine Carrier replacement delivers the correct primary and secondary voltage ratings and includes the proper VA capacity to handle your unit's control load without overheating. Installation is moderate and should be performed by a qualified technician: cut power at the disconnect, label the primary and secondary leads, mount the new transformer, and reconnect. Always confirm a shorted control wire isn't the root cause before replacing. Choosing the OEM transformer ensures correct fit and long service life over generic substitutes. We keep this part in stock and ship same-day on orders placed before 3PM CST. Get your FB4CNP042T00AAAA powered back up fast with the genuine Carrier component.\u003c\/p\u003e\n\u003ch2\u003eCompatibility\u003c\/h2\u003e\n\u003cp\u003eThis part is compatible with Carrier model FB4CNP042T00AAAA.\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":62950021628275,"sku":"carrier-transformer-fb4cnp042t00aaaa","price":49.95,"currency_code":"USD","in_stock":true}],"url":"https:\/\/nationalhvacparts.com\/products\/carrier-transformer-fb4cnp042t00aaaa","provider":"National HVAC Parts","version":"1.0","type":"link"}