{"product_id":"carrier-c4850c48zn050600-transformer-h302a1","title":"OEM Carrier 40VA 120V to 24V Control Transformer for C4850C48ZN050600 | National HVAC Parts","description":"\u003ch1\u003eOEM Carrier Control Transformer 40VA for Model C4850C48ZN050600\u003c\/h1\u003e\u003cp\u003eThis OEM replacement transformer (part #HT01BD236) is the factory-specified control circuit transformer for the \u003cstrong\u003eCarrier C4850C48ZN050600\u003c\/strong\u003e packaged unit. The transformer steps down line voltage from 120V to 24V AC to power the low-voltage control circuit — including the thermostat, contactor coil, and control board. When this component fails, the entire control circuit goes dead: the thermostat shows no response, the system won't call for heating or cooling, and no error codes will display because the board itself has no power.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecs:\u003c\/strong\u003e Input: 120V AC | Output: 24V AC | VA Rating: 40VA | OEM Part Number: HT01BD236 | Factory-matched for Carrier C4850C48ZN050600 packaged units\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM vs Generic:\u003c\/strong\u003e This is the exact factory OEM transformer, wound to Carrier's specifications. Generic replacements may share the 40VA rating but often use lower-grade insulation and less precise voltage output, which can damage sensitive control boards over time.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall difficulty: 2\/5\u003c\/strong\u003e — Turn off all power at the disconnect before servicing. Tools needed: flathead and Phillips screwdrivers, wire stripper, multimeter. Note wire colors and terminal labels before disconnecting. Verify 24V output after installation before restoring full power.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWarranty:\u003c\/strong\u003e 1-year OEM factory warranty. In stock and 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\u003eC4850C48ZN050600\u003c\/strong\u003e packaged unit. Verify your existing transformer's input\/output voltage and VA rating against your unit's data plate before ordering. If your control circuit is completely unresponsive and your breakers are intact, this transformer is the most likely cause. Our fitment team is available to confirm compatibility before you buy — order with confidence and get back up and running today.\u003c\/p\u003e","brand":"Carrier","offers":[{"title":"OEM","offer_id":62909857300851,"sku":"CARRIE-C4850C48ZN050600-TRANSFORMER-HT01BD236","price":47.25,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62909857333619,"sku":"CARRIE-C4850C48ZN050600-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_d26b551c-0bb0-42bb-914f-c31e72873c05.jpg?v=1782899089","url":"https:\/\/nationalhvacparts.com\/products\/carrier-c4850c48zn050600-transformer-h302a1","provider":"National HVAC Parts","version":"1.0","type":"link"}