{"product_id":"carrier-c4850c50aw05061-transformer-h302a1","title":"OEM Carrier Transformer 40VA 120V to 24V for C4850C50AW05061 | National HVAC Parts","description":"\u003ch1\u003eOEM Carrier Control Transformer 40VA for Model C4850C50AW05061\u003c\/h1\u003e\u003cp\u003eThis is the factory OEM replacement transformer (part number \u003cstrong\u003eHT01BD236\u003c\/strong\u003e) for the \u003cstrong\u003eCarrier C4850C50AW05061\u003c\/strong\u003e packaged unit. The transformer steps down line voltage (120V) to the 24V signal voltage required by the thermostat, control board, contactor coil, and all low-voltage safety circuits. When this transformer fails, the entire control circuit goes dead — the thermostat display may go blank, the system won't respond to any commands, or a fuse on the control board repeatedly blows due to a shorted secondary winding.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecs:\u003c\/strong\u003e 40VA rating | Primary: 120V | Secondary: 24V | OEM Part Number: HT01BD236 | Factory-matched for Carrier C4850C50AW05061 packaged units\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM vs Generic:\u003c\/strong\u003e OEM transformers are wound to exact VA and voltage tolerances required by the factory control board. Undersized or off-tolerance generic transformers can overheat, trip thermal protection, or deliver inconsistent 24V — damaging downstream components like the contactor or gas valve.\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, needle-nose pliers, multimeter (verify 0V before touching terminals). Label all low-voltage wire connections before removing the old transformer and check for any short-circuit fault in the load before installing the new unit.\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 Engineered specifically for the \u003cstrong\u003eCarrier C4850C50AW05061\u003c\/strong\u003e packaged unit. Always verify the transformer's VA rating and primary\/secondary voltages against your unit's wiring diagram and data plate before ordering. Need fitment confirmation? Our HVAC parts specialists are ready to verify compatibility before you buy — order with confidence and get back up and running today.\u003c\/p\u003e","brand":"Carrier","offers":[{"title":"OEM","offer_id":62909816111475,"sku":"CARRIE-C4850C50AW05061-TRANSFORMER-HT01BD236","price":47.25,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62909816144243,"sku":"CARRIE-C4850C50AW05061-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_9c10eaf8-e7c2-448b-94b7-c9f24c0e859e.jpg?v=1782938927","url":"https:\/\/nationalhvacparts.com\/products\/carrier-c4850c50aw05061-transformer-h302a1","provider":"National HVAC Parts","version":"1.0","type":"link"}