{"product_id":"carrier-fy4anf036010aaaa-transformer-h3hwwy","title":"OEM Carrier Transformer 40VA 120V-24V for FY4ANF036010AAAA","description":"\u003ch1\u003eOEM Carrier 40VA Control Transformer HT01CN241 for Model FY4ANF036010AAAA\u003c\/h1\u003e\u003cp\u003eThis OEM Carrier control transformer (part #HT01CN241) is the factory-specified replacement for the \u003cstrong\u003eFY4ANF036010AAAA\u003c\/strong\u003e fan coil unit. The transformer steps down 120V line voltage to the 24V AC signal required to power the entire control circuit — including the thermostat, contactor coil, and any zone control boards. When this transformer fails, absolutely nothing in the low-voltage control system will respond: the thermostat goes blank, the unit won't call for cooling or heating, and you may find a blown fuse on the control board as a secondary symptom.\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 output tolerance for reliable low-voltage control\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM vs Generic:\u003c\/strong\u003e The OEM transformer is wound and potted to Carrier's exact VA and voltage specifications. Undersized or off-tolerance generic transformers can overheat, trip thermal cutoffs, and damage downstream control boards — making OEM the only safe choice for long-term reliability.\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, needle-nose pliers, multimeter, wire nuts or terminal connectors. Label all wiring before removal. Verify secondary output voltage with a multimeter after installation before restoring low-voltage load.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWarranty:\u003c\/strong\u003e 1-year OEM factory warranty against defects. Orders placed before cutoff ship same business day from our warehouse.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eCompatibility:\u003c\/strong\u003e Designed as a direct OEM replacement for Carrier model \u003cstrong\u003eFY4ANF036010AAAA\u003c\/strong\u003e fan coil units. Always verify transformer VA rating and primary\/secondary voltages on your unit's data plate before ordering. Not sure if this is the right part? Our HVAC parts specialists will confirm fitment before you buy — just reach out.\u003c\/p\u003e","brand":"Carrier","offers":[{"title":"OEM","offer_id":62909466870131,"sku":"CARRIE-FY4ANF036010AAAA-TRANSFORMER-HT01CN241","price":47.25,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62909466902899,"sku":"CARRIE-FY4ANF036010AAAA-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_78d522ad-b3c5-4ed5-984e-d2bd5b3befdb.jpg?v=1782939722","url":"https:\/\/nationalhvacparts.com\/products\/carrier-fy4anf036010aaaa-transformer-h3hwwy","provider":"National HVAC Parts","version":"1.0","type":"link"}