{"product_id":"carrier-c50a203051-transformer-h302a1","title":"OEM Carrier Transformer 40VA 120V\/24V for C50A203051","description":"\u003ch1\u003eOEM Carrier 40VA Control Transformer for Model C50A203051\u003c\/h1\u003e\u003cp\u003eThis OEM replacement transformer (part# \u003cstrong\u003eHT01BD236\u003c\/strong\u003e) is the factory-specified control transformer for the \u003cstrong\u003eCarrier C50A203051\u003c\/strong\u003e commercial packaged unit. The transformer steps down line voltage (120V) to the 24V control circuit voltage that powers your thermostat, contactor coils, and all low-voltage control signals. When this component fails, the entire control circuit goes dead — the thermostat loses power, nothing responds, and the system will not heat or cool. If you have 120V at the primary side but no 24V output, a failed transformer is the most common culprit.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecs:\u003c\/strong\u003e 40VA rating | Primary: 120V | Secondary: 24V | OEM part number HT01BD236 | Factory-matched output tolerance for stable control circuit operation\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM vs Generic:\u003c\/strong\u003e OEM transformers are wound and insulated to Carrier's exact VA and voltage specifications, ensuring reliable 24V delivery under full control circuit load. Generic units may sag under load, causing erratic thermostat behavior or nuisance lockouts.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall Difficulty: 2\/5\u003c\/strong\u003e — Disconnect all power before servicing. Tools needed: flathead and Phillips screwdrivers, multimeter, wire nuts or spade terminals. Verify 0V on primary leads before touching any wiring. Label all low-voltage wires before disconnecting the secondary.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWarranty:\u003c\/strong\u003e 1-year OEM factory warranty. Orders placed by 3PM local time ship 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\u003eC50A203051\u003c\/strong\u003e commercial rooftop\/packaged unit. Always verify your existing transformer's VA rating and primary\/secondary voltages on the unit data plate before ordering. If you have questions about fitment, our HVAC parts team is available to confirm compatibility before you buy — no guesswork required.\u003c\/p\u003e","brand":"Carrier","offers":[{"title":"OEM","offer_id":62909714628979,"sku":"CARRIE-C50A203051-TRANSFORMER-HT01BD236","price":47.25,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62909714661747,"sku":"CARRIE-C50A203051-TRANSFORMER-HT01BD236-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-HT01BD236_e50d1bd1-3f11-4871-a2f9-09323f37dd2b.jpg?v=1782940343","url":"https:\/\/nationalhvacparts.com\/products\/carrier-c50a203051-transformer-h302a1","provider":"National HVAC Parts","version":"1.0","type":"link"}