{"product_id":"carrier-transformer-fa4anf048010agaa","title":"OEM Carrier Transformer ET4031 for Model FA4ANF048010AGAA","description":"\u003cdiv\u003e\n\u003ch1\u003eOEM Carrier Transformer ET4031 for Model FA4ANF048010AGAA\u003c\/h1\u003e\n\u003cp\u003eThis OEM Carrier transformer (ET4031) steps line voltage down to the 24V control voltage that powers the thermostat, control board, relays, and contactor circuit on your FA4ANF048010AGAA fan coil. A blown transformer leaves your system completely unresponsive — no thermostat display, no blower, no cooling call. This genuine Carrier replacement delivers the correct primary and secondary voltage and VA rating, so your low-voltage circuit is properly protected and your accessories get clean, stable power. Built to factory specifications for reliable long-term operation. Installation is moderate: shut off power, label the primary and secondary leads, mount the new transformer, and reconnect the wiring to matching terminals. A multimeter check of the 24V output confirms success. Most technicians complete the job in 30 minutes. Always verify there's no short on the secondary before re-energizing to protect the new transformer. We stock this part and ship same-day on orders placed before 3PM CST. Guaranteed fitment for the FA4ANF048010AGAA platform.\u003c\/p\u003e\n\u003ch2\u003eCompatibility\u003c\/h2\u003e\n\u003cp\u003eThis part is compatible with Carrier model FA4ANF048010AGAA.\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":62957211484531,"sku":"carrier-transformer-fa4anf048010agaa","price":54.95,"currency_code":"USD","in_stock":true}],"url":"https:\/\/nationalhvacparts.com\/products\/carrier-transformer-fa4anf048010agaa","provider":"National HVAC Parts","version":"1.0","type":"link"}