{"product_id":"carrier-fy4anf018005aaaa-transformer-h3hwwy","title":"OEM Carrier Transformer 40VA 120V-24V for FY4ANF018005AAAA — HT01CN241","description":"\u003ch1\u003eOEM Carrier Control Transformer 40VA 120V\/24V for Model FY4ANF018005AAAA\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 FY4ANF018005AAAA\u003c\/strong\u003e air handler. It steps down 120V line voltage to 24V AC to power the control board, thermostat, and all low-voltage relay circuits throughout the system. When this transformer fails, the entire control circuit goes dead — your thermostat will go blank, the air handler won't respond to any calls for heating or cooling, and no error codes will display because the board itself has no power.\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 insulation class and core rating\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM vs Generic:\u003c\/strong\u003e OEM transformers are wound to exact VA and voltage tolerances required by the Carrier FY4ANF018005AAAA control board. Undersized or off-tolerance generic units can overheat, trip internal fuses, or damage the control board they're meant to protect.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall difficulty: 2\/5\u003c\/strong\u003e — Disconnect power at the breaker before beginning. Tools needed: flathead and Phillips screwdrivers, needle-nose pliers, multimeter (to verify 24V output after install). Photograph all wire connections before disconnecting. Terminals are typically push-in or screw-type for straightforward swap.\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 warehouse.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eCompatibility:\u003c\/strong\u003e Designed specifically for the Carrier \u003cstrong\u003eFY4ANF018005AAAA\u003c\/strong\u003e air handler. Verify your existing transformer's VA rating and primary\/secondary voltages on its label before ordering to confirm fitment. If your system's control circuit is completely unresponsive and you've already ruled out a blown fuse or tripped breaker, this transformer is the next diagnostic step. Order today and our team is available to verify fitment before you buy.\u003c\/p\u003e","brand":"Carrier","offers":[{"title":"OEM","offer_id":62909469294963,"sku":"CARRIE-FY4ANF018005AAAA-TRANSFORMER-HT01CN241","price":47.25,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62909469327731,"sku":"CARRIE-FY4ANF018005AAAA-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_7fb7c23f-775e-4d88-9f04-2e639069ac8f.jpg?v=1782939712","url":"https:\/\/nationalhvacparts.com\/products\/carrier-fy4anf018005aaaa-transformer-h3hwwy","provider":"National HVAC Parts","version":"1.0","type":"link"}