{"product_id":"carrier-ff1dna018005abaa-transformer-h3hww2","title":"OEM Carrier Transformer 40VA 120V-24V for FF1DNA018005ABAA","description":"\u003ch1\u003eOEM Carrier Transformer 40VA 120V to 24V for Model FF1DNA018005ABAA\u003c\/h1\u003e\u003cp\u003eThis is the factory OEM replacement transformer (part number \u003cstrong\u003eHT01CN236\u003c\/strong\u003e) for the \u003cstrong\u003eCarrier FF1DNA018005ABAA\u003c\/strong\u003e fan coil unit. The transformer steps down 120V line voltage to the 24V signal required by your thermostat, control board, contactor coil, and all low-voltage safety circuits. When this transformer fails, the entire control circuit goes dead — your thermostat will appear unresponsive, the system will not call for heating or cooling, and no components will energize regardless of thermostat setting.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecs:\u003c\/strong\u003e 40VA rating | Primary: 120V | Secondary: 24V | Hardwired leads | Factory-matched to OEM electrical specifications for Carrier FF1DNA018005ABAA\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM vs Generic:\u003c\/strong\u003e This OEM unit is wound and rated to exact Carrier factory specifications, ensuring correct VA output and thermal protection. Generic transformers may be undersized in VA rating, leading to premature failure under full control circuit load.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall difficulty: 2\/5\u003c\/strong\u003e — Shut off all power to the unit before beginning. Tools needed: flathead and Phillips screwdrivers, wire stripper, multimeter, wire nuts. Confirm 24V output with a multimeter after installation before restoring full power. Photograph existing wiring before disconnecting.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWarranty:\u003c\/strong\u003e 1-year OEM factory warranty. In-stock and ships same business day from our NationalHVACParts.com warehouse.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eCompatibility:\u003c\/strong\u003e Designed specifically for the Carrier \u003cstrong\u003eFF1DNA018005ABAA\u003c\/strong\u003e fan coil unit. Verify your existing transformer's primary\/secondary voltage and VA rating on the data plate or wiring diagram before ordering. If you are unsure of fitment, our team is available to verify compatibility before you purchase. Order today for same-day shipping.\u003c\/p\u003e","brand":"Carrier","offers":[{"title":"OEM","offer_id":62909516513651,"sku":"CARRIE-FF1DNA018005ABAA-TRANSFORMER-HT01CN236","price":47.25,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62909516546419,"sku":"CARRIE-FF1DNA018005ABAA-TRANSFORMER-HT01CN236-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-HT01CN236_ab033a6a-739a-47f6-8fb7-550fb76c0fe3.jpg?v=1782939592","url":"https:\/\/nationalhvacparts.com\/products\/carrier-ff1dna018005abaa-transformer-h3hww2","provider":"National HVAC Parts","version":"1.0","type":"link"}