{"product_id":"carrier-fb4cnp036l15abaa-transformer-h3hwwy","title":"OEM Carrier Transformer 40VA 120V-24V for FB4CNP036L15ABAA","description":"\u003ch1\u003eOEM Carrier Transformer 40VA 120V\/24V for Model FB4CNP036L15ABAA\u003c\/h1\u003e\u003cp\u003eThis OEM replacement transformer (part number \u003cstrong\u003eHT01CN241\u003c\/strong\u003e) is the factory-specified control circuit transformer for the \u003cstrong\u003eCarrier FB4CNP036L15ABAA\u003c\/strong\u003e fan coil unit. The transformer steps down 120V line voltage to 24V AC to power the entire low-voltage control circuit — including the thermostat, contactor coil, and control board. When it fails, nothing in the system responds: the thermostat goes blank, the system won't call for heating or cooling, and you may measure zero volts on the secondary terminals. It is often the first component to check when the system appears completely dead.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecs:\u003c\/strong\u003e Input 120V AC | Output 24V AC | 40VA rating | OEM part number HT01CN241 | Factory-matched construction for Carrier fan coil applications\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM vs Generic:\u003c\/strong\u003e OEM transformers are wound to exact VA and voltage tolerances required by Carrier's control board. Undersized or off-tolerance generic transformers can sag under load, causing intermittent lockouts and premature board failures.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall Difficulty: 2\/5\u003c\/strong\u003e — Shut off all power to the unit before beginning. Tools needed: flathead and Phillips screwdrivers, multimeter, wire nuts or spade connectors. Verify 0V at input terminals before touching wiring. Photograph existing wire connections before disconnecting the old transformer.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWarranty:\u003c\/strong\u003e 1-year OEM factory warranty against defects. Ships same business day from our climate-controlled warehouse.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eCompatibility:\u003c\/strong\u003e Designed for the Carrier \u003cstrong\u003eFB4CNP036L15ABAA\u003c\/strong\u003e fan coil unit. Confirm input voltage and VA rating on your unit's data plate before ordering. If you're unsure of fitment, our HVAC parts specialists verify compatibility before your order ships — no guesswork required.\u003c\/p\u003e","brand":"Carrier","offers":[{"title":"OEM","offer_id":62909533421939,"sku":"CARRIE-FB4CNP036L15ABAA-TRANSFORMER-HT01CN241","price":47.25,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62909533454707,"sku":"CARRIE-FB4CNP036L15ABAA-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_01ff3fdb-dfae-49c5-8c0c-c5e1aad8ff85.jpg?v=1782939548","url":"https:\/\/nationalhvacparts.com\/products\/carrier-fb4cnp036l15abaa-transformer-h3hwwy","provider":"National HVAC Parts","version":"1.0","type":"link"}