{"product_id":"carrier-transformer-fa4bnf042010aaaa","title":"OEM Carrier Transformer for Model FA4BNF042010AAAA Fan Coil Unit","description":"\u003cdiv\u003e\n\u003ch1\u003eOEM Carrier Transformer for Model FA4BNF042010AAAA Fan Coil Unit\u003c\/h1\u003e\n\u003cp\u003eThis genuine OEM Carrier transformer is the exact replacement for the FA4BNF042010AAAA fan coil unit. The transformer converts incoming line voltage into the 24V low-voltage power that drives your thermostat, control board, and relays. If the transformer fails, the control circuit goes dead and the system stops responding to any thermostat call. A correct factory-spec transformer restores stable 24V output and shields sensitive controls from voltage spikes and overload. This part is a direct fit for the Carrier FA4BNF042010AAAA, installing in the original position with matching primary and secondary leads. Installation is moderate and best left to a qualified HVAC technician: shut off power, document the wiring, mount the new transformer, and verify the secondary output with a multimeter. Choosing genuine OEM ensures the proper VA rating and dependable long-term performance over generic alternatives. In stock and ready to ship. Orders placed before 3PM CST ship same-day so your equipment is back in service quickly.\u003c\/p\u003e\n\u003ch2\u003eCompatibility\u003c\/h2\u003e\n\u003cp\u003eThis part is compatible with Carrier model FA4BNF042010AAAA.\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":62956207047027,"sku":"carrier-transformer-fa4bnf042010aaaa","price":39.95,"currency_code":"USD","in_stock":true}],"url":"https:\/\/nationalhvacparts.com\/products\/carrier-transformer-fa4bnf042010aaaa","provider":"National HVAC Parts","version":"1.0","type":"link"}