{"product_id":"carrier-transformer-fc4dnf030015aaaa","title":"OEM Carrier Transformer Replacement Part for Fan Coil Model FC4DNF030015AAAA","description":"\u003cdiv\u003e\n\u003ch1\u003eOEM Carrier Transformer Replacement Part for Fan Coil Model FC4DNF030015AAAA\u003c\/h1\u003e\n\u003cp\u003eThis OEM Carrier transformer is the genuine replacement for the FC4DNF030015AAAA fan coil unit, stepping incoming line voltage down to the 24V control power that drives your thermostat, control board, and relays. A failed transformer kills the low-voltage circuit, so the blower won't run and the system won't respond to any heating or cooling call. Built to Carrier's factory specifications, it provides the exact secondary voltage and matches the original mounting pattern and terminal arrangement of the FC4DNF030015AAAA — no adapting, splicing, or guesswork like generic substitutes require. Installation is a moderate DIY task: turn off power at the disconnect, note and remove the existing wiring, mount the new transformer, and reconnect each lead to its original terminal. Most people with basic electrical experience wrap up in under an hour, but we recommend a licensed HVAC technician for line-voltage connections. Genuine Carrier parts protect reliability and your warranty. In stock — orders placed before 3PM CST ship the same day.\u003c\/p\u003e\n\u003ch2\u003eCompatibility\u003c\/h2\u003e\n\u003cp\u003eThis part is compatible with Carrier model FC4DNF030015AAAA.\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":62947287105907,"sku":"carrier-transformer-fc4dnf030015aaaa","price":44.95,"currency_code":"USD","in_stock":true}],"url":"https:\/\/nationalhvacparts.com\/products\/carrier-transformer-fc4dnf030015aaaa","provider":"National HVAC Parts","version":"1.0","type":"link"}