{"product_id":"carrier-transformer-fc4dnf030000aaaa","title":"OEM Carrier Fan Coil 24V Transformer for Model FC4DNF030000AAAA","description":"\u003cdiv\u003e\n\u003ch1\u003eOEM Carrier Fan Coil 24V Transformer for Model FC4DNF030000AAAA\u003c\/h1\u003e\n\u003cp\u003eThis genuine OEM Carrier 24V control transformer supplies low-voltage power to the thermostat, control board, and contactor circuits in your FC4DNF030000AAAA fan coil. Stepping line voltage down to 24 volts, it is the heartbeat of the unit's control system — a failed transformer means no call for cooling or heating ever reaches the board. Built to exact Carrier specifications, it drops directly into the FC4DNF030000AAAA with no rewiring or adapters required, ensuring correct VA rating and mounting fit. Installation is straightforward for an experienced technician: disconnect power, label and swap the primary and secondary leads, and remount — typically a 20-30 minute job. We strongly recommend a qualified HVAC professional confirm voltage at the secondary after replacement. Choosing the OEM part protects your system warranty and avoids the nuisance failures common with universal substitutes. In stock and ready to ship same-day on all orders placed before 3PM CST, so your repair stays on schedule. Restore reliable, safe operation to your Carrier fan coil with the correct factory transformer.\u003c\/p\u003e\n\u003ch2\u003eCompatibility\u003c\/h2\u003e\n\u003cp\u003eThis part is compatible with Carrier model FC4DNF030000AAAA.\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":62947366732147,"sku":"carrier-transformer-fc4dnf030000aaaa","price":56.95,"currency_code":"USD","in_stock":true}],"url":"https:\/\/nationalhvacparts.com\/products\/carrier-transformer-fc4dnf030000aaaa","provider":"National HVAC Parts","version":"1.0","type":"link"}