{"product_id":"carrier-c50a503562-transformer-h302a1","title":"OEM Carrier Transformer 40VA 120V\/24V for C50A503562","description":"\u003ch1\u003eOEM Carrier Control Transformer 40VA 120V to 24V for Model C50A503562\u003c\/h1\u003e\u003cp\u003eThis OEM replacement transformer is the factory-specified step-down control transformer for the \u003cstrong\u003eCarrier C50A503562\u003c\/strong\u003e commercial packaged unit. The transformer converts 120V line voltage to the 24V AC signal that powers the entire control circuit — including the thermostat, contactor coil, gas valve, and control board. When it fails, the system goes completely silent: the thermostat goes dark, no calls for heat or cool are processed, and the unit will not respond to any commands. A faulty transformer is one of the most common causes of a completely unresponsive HVAC system.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecs:\u003c\/strong\u003e 40VA rating | Primary: 120V AC | Secondary: 24V AC | OEM part numbers HT01BD236 and HT01BD702 | Factory-matched for Carrier C50A503562\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 specifications, preventing nuisance trips, overheating, and premature control board failures that are common with undersized aftermarket units.\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 (to verify 24V output before reconnecting load). Photograph all wiring prior to removal. Replace the fuse or circuit breaker if the original transformer failed due to a short.\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 stock.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eCompatibility:\u003c\/strong\u003e Designed for the Carrier \u003cstrong\u003eC50A503562\u003c\/strong\u003e commercial rooftop\/packaged unit. Cross-references OEM part numbers \u003cstrong\u003eHT01BD236\u003c\/strong\u003e and \u003cstrong\u003eHT01BD702\u003c\/strong\u003e. Verify your unit's control voltage and VA requirements on the data plate before ordering. Not sure it fits? Our parts team confirms fitment before you buy — order with confidence and get it shipped today.\u003c\/p\u003e","brand":"Carrier","offers":[{"title":"OEM","offer_id":62909670916467,"sku":"CARRIE-C50A503562-TRANSFORMER-HT01BD236","price":47.25,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62909670949235,"sku":"CARRIE-C50A503562-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_d8c18fc0-001d-4383-870a-f4df84acc24f.jpg?v=1782940612","url":"https:\/\/nationalhvacparts.com\/products\/carrier-c50a503562-transformer-h302a1","provider":"National HVAC Parts","version":"1.0","type":"link"}