{"product_id":"carrier-c50a204062-transformer-h302a1","title":"OEM Carrier Transformer 40VA 120V\/24V for C50A204062","description":"\u003ch1\u003eOEM Carrier 40VA Control Transformer for Model C50A204062\u003c\/h1\u003e\u003cp\u003eThis OEM control transformer is the factory-specified replacement for the \u003cstrong\u003eCarrier C50A204062\u003c\/strong\u003e commercial packaged unit. The transformer steps down 120V line voltage to the 24V signal required by the thermostat, control board, contactor coil, and all low-voltage safety circuits. When this component fails, nothing in the control circuit responds — the thermostat goes blank, the system will not call for heating or cooling, and you may measure 0V at the R and C terminals of the control board. OEM part numbers \u003cstrong\u003eHT01BD236\u003c\/strong\u003e and \u003cstrong\u003eHT01BD702\u003c\/strong\u003e are both covered by this listing.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecs:\u003c\/strong\u003e 40VA rating | Primary: 120V AC | Secondary: 24V AC | Foot-mount bracket | Factory-matched impedance for stable low-voltage 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 impedance specs. Undersized or off-spec generic units can overheat under contactor coil load, tripping thermal protection and causing intermittent lockouts.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall difficulty: 2\/5\u003c\/strong\u003e — Shut off all power at the disconnect and breaker before beginning. Tools needed: flathead and Phillips screwdrivers, wire stripper, multimeter. Label or photograph all low-voltage wire connections before removal. Verify 24V output with a multimeter before re-energizing the full system.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWarranty:\u003c\/strong\u003e 1-year OEM factory warranty against defects in materials and workmanship. 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\u003eC50A204062\u003c\/strong\u003e commercial rooftop\/packaged unit. Confirm your unit's data plate voltage requirements match 120V primary \/ 24V secondary before ordering. Replaces OEM part numbers HT01BD236 and HT01BD702. Not sure it fits? Our HVAC parts team will verify compatibility before you order — in stock and ships today.\u003c\/p\u003e","brand":"Carrier","offers":[{"title":"OEM","offer_id":62909711384947,"sku":"CARRIE-C50A204062-TRANSFORMER-HT01BD236","price":47.25,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62909711417715,"sku":"CARRIE-C50A204062-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_f48578c9-df32-4869-a3d2-16de08d49683.jpg?v=1782940375","url":"https:\/\/nationalhvacparts.com\/products\/carrier-c50a204062-transformer-h302a1","provider":"National HVAC Parts","version":"1.0","type":"link"}