{"product_id":"carrier-c50a403562-transformer-h302a1","title":"OEM Carrier Transformer 40VA 120V-24V for C50A403562","description":"\u003ch1\u003eOEM Carrier 40VA Control Transformer for Model C50A403562\u003c\/h1\u003e\u003cp\u003eThis OEM control transformer is the factory-specified replacement for the \u003cstrong\u003eCarrier C50A403562\u003c\/strong\u003e packaged unit. The transformer steps down line voltage (120V) to the 24V AC signal used by your thermostat, contactor coil, gas valve, and all low-voltage control components. When this part fails, the entire control circuit goes dead — the thermostat display may go blank, the system won't respond to any call for heating or cooling, and no fault codes will appear because the board itself has no power. OEM part numbers \u003cstrong\u003eHT01BD236\u003c\/strong\u003e and \u003cstrong\u003eHT01BD702\u003c\/strong\u003e are direct factory replacements.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecs:\u003c\/strong\u003e Input: 120V AC | Output: 24V AC | VA Rating: 40VA | Factory-matched primary and secondary winding tolerances for stable control voltage\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 thermal specifications. Undersized or off-tolerance aftermarket units can overheat under full control circuit load, tripping the built-in thermal fuse and causing intermittent lockouts — replacing the OEM unit eliminates that risk entirely.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall Difficulty: 2\/5\u003c\/strong\u003e — Shut off power at the disconnect and breaker before beginning. Tools needed: flathead and Phillips screwdrivers, wire stripper, multimeter. Verify 120V input and 24V output with a multimeter after installation before restoring the full system. Label or photograph all wiring prior to disconnecting.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWarranty:\u003c\/strong\u003e 1-year OEM factory warranty. In-stock units ship the 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\u003eC50A403562\u003c\/strong\u003e commercial packaged rooftop unit. Cross-references OEM part numbers HT01BD236 and HT01BD702. Always confirm your unit's control voltage and VA requirements on the data plate before ordering. Need fitment help? Our HVAC parts team verifies compatibility before you buy — order with confidence and get your system back online fast.\u003c\/p\u003e","brand":"Carrier","offers":[{"title":"OEM","offer_id":62909683171699,"sku":"CARRIE-C50A403562-TRANSFORMER-HT01BD236","price":47.25,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62909683204467,"sku":"CARRIE-C50A403562-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_89521e93-b2b2-412e-b842-ca9f728a670e.jpg?v=1782939372","url":"https:\/\/nationalhvacparts.com\/products\/carrier-c50a403562-transformer-h302a1","provider":"National HVAC Parts","version":"1.0","type":"link"}