{"product_id":"carrier-fx4cnf048010aaaa-transformer-h3hwwy","title":"OEM Carrier Transformer 40VA 24V for FX4CNF048010AAAA — HT01CN241","description":"\u003ch1\u003eOEM Carrier 40VA Control Transformer for Model FX4CNF048010AAAA — Part# HT01CN241\u003c\/h1\u003e\u003cp\u003eThis OEM replacement transformer (part# HT01CN241) is the factory-specified control circuit transformer for the \u003cstrong\u003eCarrier FX4CNF048010AAAA\u003c\/strong\u003e fan coil air handler. The transformer steps down 120V line voltage to the 24V AC signal that powers your thermostat, control board, and all low-voltage switching circuits. When this component fails, the entire control circuit goes dark — your thermostat displays nothing, the system won't respond to any calls for heating or cooling, and the unit sits completely dead despite power being present at the disconnect.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecs:\u003c\/strong\u003e 40VA rated | 120V primary \/ 24V secondary | Factory-matched OEM tolerances | Designed for Carrier FX4CNF048010AAAA air handler applications\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM vs Generic:\u003c\/strong\u003e This OEM unit (HT01CN241) is wound and encapsulated to Carrier's exact VA and voltage specifications. Generic transformers often run undersized VA ratings, causing overheating under full control-circuit load and premature failure — particularly in systems with electronic air cleaners or zone controllers drawing additional 24V current.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall difficulty: 2\/5\u003c\/strong\u003e — Shut off power at the disconnect and breaker before proceeding. Tools needed: flathead and Phillips screwdrivers, wire stripper, multimeter, wire nuts. Photograph all wiring connections before disconnecting. Verify 24V output with a multimeter after installation before restoring full system power.\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 — order by 3PM local time to go out today.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eCompatibility:\u003c\/strong\u003e Engineered specifically for the Carrier \u003cstrong\u003eFX4CNF048010AAAA\u003c\/strong\u003e 4-ton fan coil air handler. Confirm your unit's data plate shows 120V\/24V control circuit and 40VA transformer rating before ordering. Cross-references OEM part number \u003cstrong\u003eHT01CN241\u003c\/strong\u003e. Not sure if this is the right part? Our HVAC parts specialists verify fitment before every order — call or chat before you buy.\u003c\/p\u003e","brand":"Carrier","offers":[{"title":"OEM","offer_id":62909481845107,"sku":"CARRIE-FX4CNF048010AAAA-TRANSFORMER-HT01CN241","price":47.25,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62909481877875,"sku":"CARRIE-FX4CNF048010AAAA-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_513ce4b9-78d2-4439-97ea-e72da7c5cc91.jpg?v=1782942558","url":"https:\/\/nationalhvacparts.com\/products\/carrier-fx4cnf048010aaaa-transformer-h3hwwy","provider":"National HVAC Parts","version":"1.0","type":"link"}