{"product_id":"carrier-fc4cnf060000aaaa-transformer-h3hwwy","title":"OEM Carrier Transformer 40VA 120V\/24V for FC4CNF060000AAAA","description":"\u003ch1\u003eOEM Carrier 40VA Control Transformer for Model FC4CNF060000AAAA\u003c\/h1\u003e\u003cp\u003eThis OEM replacement transformer (part number \u003cstrong\u003eHT01CN241\u003c\/strong\u003e) is the factory-specified control circuit transformer for the \u003cstrong\u003eCarrier FC4CNF060000AAAA\u003c\/strong\u003e fan coil unit. The transformer steps line voltage (120V) down to 24V AC to power the thermostat, control board, and all low-voltage switching circuits throughout the system. When the transformer fails, the entire control circuit goes dead — the thermostat goes blank, the system will not respond to any calls for heating or cooling, and nothing works. A failed transformer is often caused by a short in the low-voltage wiring or a stuck contactor coil drawing excessive current.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecs:\u003c\/strong\u003e 40VA rating | Primary: 120V AC | Secondary: 24V AC | OEM part number HT01CN241 | Factory-matched for Carrier FC4CNF060000AAAA fan coil units\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM vs Generic:\u003c\/strong\u003e This OEM transformer is wound to exact factory VA and impedance specifications, ensuring stable 24V output under full control-circuit load. Generic transformers may underperform at rated VA, causing erratic thermostat behavior, nuisance trips, or premature failure.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall difficulty: 2\/5\u003c\/strong\u003e — Disconnect all power before servicing. Tools needed: flathead and Phillips screwdrivers, multimeter (verify 0V before touching terminals), wire nuts or spade connectors. Always check low-voltage wiring for shorts before installing the new transformer to prevent repeat failure.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWarranty:\u003c\/strong\u003e 1-year OEM factory warranty. Orders placed by 3PM ship same business day from our warehouse.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eCompatibility:\u003c\/strong\u003e Engineered specifically for the Carrier \u003cstrong\u003eFC4CNF060000AAAA\u003c\/strong\u003e fan coil unit. Verify your existing transformer's VA rating and primary\/secondary voltages on the data plate before ordering. If you're unsure of fitment, our HVAC parts specialists confirm compatibility before you buy — no guesswork, no returns.\u003c\/p\u003e","brand":"Carrier","offers":[{"title":"OEM","offer_id":62909525066099,"sku":"CARRIE-FC4CNF060000AAAA-TRANSFORMER-HT01CN241","price":47.25,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62909525098867,"sku":"CARRIE-FC4CNF060000AAAA-TRANSFORMER-HT01CN241-GEN","price":18.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0984\/1190\/5395\/files\/nhvac-transformer-control-HT01CN241_c6b9fc7c-1b03-4166-b488-5a43ec4c9c39.jpg?v=1782940961","url":"https:\/\/nationalhvacparts.com\/products\/carrier-fc4cnf060000aaaa-transformer-h3hwwy","provider":"National HVAC Parts","version":"1.0","type":"link"}