{"product_id":"carrier-c4850c50zn030600-transformer-h302a1","title":"OEM Carrier Transformer 40VA 120V to 24V for C4850C50ZN030600 | National HVAC Parts","description":"\u003ch1\u003eOEM Carrier Control Transformer 40VA for Model C4850C50ZN030600\u003c\/h1\u003e\u003cp\u003eThis OEM replacement control transformer (part# \u003cstrong\u003eHT01BD236\u003c\/strong\u003e) is the factory-specified unit for the \u003cstrong\u003eCarrier C4850C50ZN030600\u003c\/strong\u003e packaged system. The transformer steps down 120V line voltage to 24V AC to power the entire low-voltage control circuit — including the thermostat, contactor coil, and control board. When it fails, nothing in the system responds: the thermostat goes blank, the unit won't call for cooling or heating, and you may detect a burning smell near the air handler or unit cabinet.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecs:\u003c\/strong\u003e 40VA rating | Primary voltage: 120V AC | Secondary voltage: 24V AC | OEM part number HT01BD236 | Compatible with R-410A packaged systems\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM vs Generic:\u003c\/strong\u003e This OEM transformer is wound to exact Carrier factory specifications, ensuring proper VA capacity and insulation rating. Undersized generic transformers can overheat under peak control-circuit load, causing repeated nuisance failures and potential board damage.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall difficulty: 2\/5\u003c\/strong\u003e — Disconnect all power before starting. Tools needed: flathead and Phillips screwdrivers, needle-nose pliers, multimeter (verify 0V before touching wires). Photograph all low-voltage wiring connections before removal. Most techs complete this swap in under 30 minutes.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWarranty:\u003c\/strong\u003e 1-year OEM factory warranty against defects. In stock and ships same business day from our climate-controlled warehouse.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eCompatibility:\u003c\/strong\u003e Engineered for the Carrier \u003cstrong\u003eC4850C50ZN030600\u003c\/strong\u003e packaged unit. Always verify your existing transformer's VA rating and primary\/secondary voltages on the unit data plate or existing part label before ordering. If your control circuit has experienced a short, inspect low-voltage wiring for damage before installing the replacement to prevent immediate re-failure. Questions about fitment? Our HVAC parts specialists verify compatibility before you order — reach out via chat or phone.\u003c\/p\u003e","brand":"Carrier","offers":[{"title":"OEM","offer_id":62909776200051,"sku":"CARRIE-C4850C50ZN030600-TRANSFORMER-HT01BD236","price":47.25,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62909776232819,"sku":"CARRIE-C4850C50ZN030600-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_8d394cbb-b3e8-4521-a8ba-a20c8985fe5c.jpg?v=1782939062","url":"https:\/\/nationalhvacparts.com\/products\/carrier-c4850c50zn030600-transformer-h302a1","provider":"National HVAC Parts","version":"1.0","type":"link"}