{"product_id":"carrier-fy4anf036t00aaaa-transformer-h3hwwy","title":"OEM Carrier Transformer 40VA 120V-24V for FY4ANF036T00AAAA","description":"\u003ch1\u003eOEM Carrier Control Transformer 40VA 120V\/24V for Model FY4ANF036T00AAAA\u003c\/h1\u003e\u003cp\u003eThis OEM Carrier transformer (part number \u003cstrong\u003eHT01CN241\u003c\/strong\u003e) is the factory-specified replacement for the \u003cstrong\u003eFY4ANF036T00AAAA\u003c\/strong\u003e fan coil unit. The transformer steps down line voltage from 120V to 24V AC, powering the low-voltage control circuit that operates your thermostat, contactor coil, and control board. When this component fails, the entire control circuit goes dead — the thermostat goes blank, the system won't respond to any calls for heating or cooling, and no fault codes can even be generated. It is often one of the first components to check when a system appears completely unresponsive.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecs:\u003c\/strong\u003e 40VA rating | Primary: 120V AC | Secondary: 24V AC | Factory OEM part number HT01CN241 | Direct drop-in replacement with correct lead length and mounting configuration\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM vs Generic:\u003c\/strong\u003e OEM transformers are wound to exact VA specifications, protecting downstream components like control boards from voltage fluctuation. Undersized generic transformers can overheat and trip internal breakers, causing intermittent and hard-to-diagnose failures.\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. Test primary and secondary voltages after install to confirm output. Photograph all wiring connections before removal.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWarranty:\u003c\/strong\u003e 1-year OEM factory warranty against defects in materials and workmanship. Ships same business day from our climate-controlled warehouse.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eCompatibility:\u003c\/strong\u003e Designed specifically for the Carrier \u003cstrong\u003eFY4ANF036T00AAAA\u003c\/strong\u003e fan coil unit. Always verify your existing transformer's VA rating and primary\/secondary voltages on the unit data plate before ordering. Our parts specialists are available to confirm fitment — order with confidence and get your system back online fast.\u003c\/p\u003e","brand":"Carrier","offers":[{"title":"OEM","offer_id":62909466575219,"sku":"CARRIE-FY4ANF036T00AAAA-TRANSFORMER-HT01CN241","price":47.25,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62909466607987,"sku":"CARRIE-FY4ANF036T00AAAA-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_361c2f79-dab7-4eec-9e16-0387c1c0a3d8.jpg?v=1782939724","url":"https:\/\/nationalhvacparts.com\/products\/carrier-fy4anf036t00aaaa-transformer-h3hwwy","provider":"National HVAC Parts","version":"1.0","type":"link"}