{"product_id":"carrier-fa4cnc036010aaaa-transformer-h3hwwy","title":"OEM Carrier Transformer 40VA 120V\/24V for FA4CNC036010AAAA","description":"\u003ch1\u003eOEM Carrier Transformer 40VA 120V to 24V for Model FA4CNC036010AAAA\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 FA4CNC036010AAAA\u003c\/strong\u003e air handler. Its job is to step down the 120V line voltage to the 24V signal voltage that powers your thermostat, control board, and all low-voltage switching functions. When this transformer fails, the entire control circuit goes dead — the thermostat goes blank, the system won't respond to any call for heating or cooling, and no contactors or relays will energize. If you're getting 120V at the primary and nothing at the secondary, this is your part.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecs:\u003c\/strong\u003e 40VA rated | 120V primary \/ 24V secondary | OEM part number HT01CN241 | Factory-matched output for Carrier FA4CNC036010AAAA air handler control circuits\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM vs Generic:\u003c\/strong\u003e OEM transformers are wound and insulated to exact factory VA ratings, ensuring stable 24V output under full control-circuit load. Generic units can sag under load, causing nuisance lockouts, thermostat brownouts, and premature control board failure.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall Difficulty: 2\/5\u003c\/strong\u003e — Disconnect all power before beginning. Tools needed: flathead and Phillips screwdrivers, needle-nose pliers, multimeter. Verify 0V at primary terminals before touching wiring. Photograph all wire connections before disconnecting. Match primary and secondary wire leads carefully on reinstall.\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 stocked warehouse.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eCompatibility:\u003c\/strong\u003e Designed for the Carrier \u003cstrong\u003eFA4CNC036010AAAA\u003c\/strong\u003e fan coil air handler. Always verify your existing transformer's VA rating and primary\/secondary voltages against your unit's data plate before ordering. Need fitment confirmation? Our HVAC parts specialists verify compatibility before you buy — no guesswork required. \u003cstrong\u003eOrder today and ship today.\u003c\/strong\u003e\u003c\/p\u003e","brand":"Carrier","offers":[{"title":"OEM","offer_id":62909549576563,"sku":"CARRIE-FA4CNC036010AAAA-TRANSFORMER-HT01CN241","price":47.25,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62909549609331,"sku":"CARRIE-FA4CNC036010AAAA-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_b3b10129-afa7-4fe7-bcdf-372c6944833e.jpg?v=1782940874","url":"https:\/\/nationalhvacparts.com\/products\/carrier-fa4cnc036010aaaa-transformer-h3hwwy","provider":"National HVAC Parts","version":"1.0","type":"link"}