{"product_id":"carrier-fz4anp048l00aaaa-transformer-h3hwwy","title":"OEM Carrier Transformer 40VA 120V\/24V for FZ4ANP048L00AAAA","description":"\u003ch1\u003eOEM Carrier 40VA Control Transformer for Model FZ4ANP048L00AAAA\u003c\/h1\u003e\u003cp\u003eThis OEM replacement transformer (part number \u003cstrong\u003eHT01CN241\u003c\/strong\u003e) is the factory-specified step-down transformer for the \u003cstrong\u003eCarrier FZ4ANP048L00AAAA\u003c\/strong\u003e air handler. The transformer converts 120V line voltage to the 24V AC signal that powers your thermostat, control board, and all low-voltage control circuit components. When the transformer fails, the entire control circuit goes dead — your thermostat display may go blank, the system will not respond to any commands, and in some cases the secondary fuse will blow repeatedly if a wiring fault exists downstream.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecs:\u003c\/strong\u003e Primary voltage: 120V AC | Secondary voltage: 24V AC | VA rating: 40VA | OEM part number: HT01CN241 | Direct factory replacement for Carrier FZ4ANP048L00AAAA air handlers\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM vs Generic:\u003c\/strong\u003e This is a genuine OEM Carrier transformer wound to exact factory VA and voltage specifications. Generic transformers frequently run under-rated VA, causing thermal overload, nuisance trips, and premature failure — especially in multi-stage systems drawing higher control current.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall difficulty: 2\/5\u003c\/strong\u003e — Always shut off power at the disconnect and breaker before servicing. Tools needed: flathead and Phillips screwdrivers, wire stripper, multimeter. Test secondary output (should read 24–28V AC) before closing the unit. Check for downstream short circuits if the original transformer failed due to a blown fuse.\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\u003eFZ4ANP048L00AAAA\u003c\/strong\u003e 4-ton air handler. Always confirm line voltage and VA requirements on your unit's data plate before ordering. If you're unsure of fitment, our HVAC parts specialists are available to verify compatibility before your order ships — same-day shipping on all in-stock orders placed before 3PM local time.\u003c\/p\u003e","brand":"Carrier","offers":[{"title":"OEM","offer_id":62909456613747,"sku":"CARRIE-FZ4ANP048L00AAAA-TRANSFORMER-HT01CN241","price":47.25,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62909456646515,"sku":"CARRIE-FZ4ANP048L00AAAA-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_f255a1ce-f242-4bd5-b422-5f51dcb97883.jpg?v=1782941296","url":"https:\/\/nationalhvacparts.com\/products\/carrier-fz4anp048l00aaaa-transformer-h3hwwy","provider":"National HVAC Parts","version":"1.0","type":"link"}