{"product_id":"carrier-fy4anf048015aaaa-transformer-h3hwwy","title":"OEM Carrier Transformer 40VA 120V-24V for FY4ANF048015AAAA","description":"\u003ch1\u003eOEM Carrier 40VA Control Transformer HT01CN241 for Model FY4ANF048015AAAA\u003c\/h1\u003e\u003cp\u003eThis OEM control transformer (part number \u003cstrong\u003eHT01CN241\u003c\/strong\u003e) is the factory-specified replacement for the \u003cstrong\u003eCarrier FY4ANF048015AAAA\u003c\/strong\u003e fan coil air handler. The transformer steps line voltage (120V) down to the 24V required to power the entire low-voltage control circuit — including the thermostat, contactor coil, and control board. When this component fails, nothing in the system responds: the thermostat goes blank, the air handler won't energize, and the system appears completely dead even with power present at the unit.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecs:\u003c\/strong\u003e 40VA rated | Primary: 120V AC | Secondary: 24V AC | Factory OEM part number HT01CN241 | Direct drop-in replacement with matching wire leads and mounting footprint\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM vs Generic:\u003c\/strong\u003e OEM transformers are wound to exact VA and voltage tolerances specified by Carrier engineering. Undersized or off-tolerance generic units can brown out under load, damage control boards, or blow fuses repeatedly — costing far more than the part itself.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall difficulty: 2\/5\u003c\/strong\u003e — Disconnect power at the breaker and verify voltage is absent before touching any terminals. Tools needed: flathead and Phillips screwdrivers, multimeter, wire stripper. Always label or photograph existing wiring connections before removal. Confirm primary fuse integrity before replacement.\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 for the Carrier \u003cstrong\u003eFY4ANF048015AAAA\u003c\/strong\u003e fan coil air handler. Verify your unit's control board fuse (typically 3A) is not blown before replacing the transformer, as a shorted secondary load will damage a new unit immediately. Cross-reference OEM part number HT01CN241 on your unit's wiring diagram label to confirm fitment. Have questions about compatibility? Our HVAC parts specialists verify fitment before you order — reach out before purchasing.\u003c\/p\u003e","brand":"Carrier","offers":[{"title":"OEM","offer_id":62909465493875,"sku":"CARRIE-FY4ANF048015AAAA-TRANSFORMER-HT01CN241","price":47.25,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62909465526643,"sku":"CARRIE-FY4ANF048015AAAA-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_e3611c66-c37c-4634-bafa-312442b0d142.jpg?v=1782939729","url":"https:\/\/nationalhvacparts.com\/products\/carrier-fy4anf048015aaaa-transformer-h3hwwy","provider":"National HVAC Parts","version":"1.0","type":"link"}