{"product_id":"carrier-fb4cnp048l15abaa-transformer-h3hwwy","title":"OEM Carrier Transformer 40VA 120V\/24V for FB4CNP048L15ABAA","description":"\u003ch1\u003eOEM Carrier 40VA Control Transformer HT01CN241 for Model FB4CNP048L15ABAA\u003c\/h1\u003e\u003cp\u003eThis is the OEM factory-specified control transformer (part number \u003cstrong\u003eHT01CN241\u003c\/strong\u003e) for the \u003cstrong\u003eCarrier FB4CNP048L15ABAA\u003c\/strong\u003e fan coil air handler. The transformer steps down line voltage from 120V to 24V to power the low-voltage control circuit — including the thermostat, control board, and all relay coils. When the transformer fails, nothing in the system responds: the thermostat goes blank, the air handler won't energize, and the entire low-voltage circuit goes dead. A blown transformer is often caused by a short in the thermostat wiring or a faulty contactor coil — always inspect wiring before installing a replacement.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecs:\u003c\/strong\u003e 40VA rating | Primary: 120V | Secondary: 24V | OEM Part Number: HT01CN241 | Factory drop-in replacement with original mounting footprint\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM vs Generic:\u003c\/strong\u003e This OEM transformer is wound to exact VA and voltage tolerances required by Carrier's control board. Undersized or off-tolerance generic transformers can overheat under load, trip thermal cutoffs, and damage downstream control components.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall Difficulty: 2\/5\u003c\/strong\u003e — Shut off power at the disconnect and breaker before beginning. Tools needed: flathead and Phillips screwdrivers, multimeter, wire nuts or spade terminals. Test primary and secondary voltages after installation to confirm correct output before restoring full power.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWarranty:\u003c\/strong\u003e 1-year OEM factory warranty against defects. 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\u003eFB4CNP048L15ABAA\u003c\/strong\u003e fan coil air handler. Verify existing transformer VA rating and primary\/secondary voltages on your unit's data plate before ordering. Need help confirming fitment? Our HVAC parts team is available to verify compatibility before you buy — order with confidence and get back up and running today.\u003c\/p\u003e","brand":"Carrier","offers":[{"title":"OEM","offer_id":62909533159795,"sku":"CARRIE-FB4CNP048L15ABAA-TRANSFORMER-HT01CN241","price":47.25,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62909533192563,"sku":"CARRIE-FB4CNP048L15ABAA-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_b90d0d38-20fa-4cb9-b30b-b724c314202e.jpg?v=1782940946","url":"https:\/\/nationalhvacparts.com\/products\/carrier-fb4cnp048l15abaa-transformer-h3hwwy","provider":"National HVAC Parts","version":"1.0","type":"link"}