{"product_id":"carrier-c4850c50aw03061-transformer-h302a1","title":"OEM Carrier Transformer 40VA 120V to 24V for C4850C50AW03061 — Ships Today","description":"\u003ch1\u003eOEM Carrier Control Transformer 40VA 120V to 24V for Model C4850C50AW03061\u003c\/h1\u003e\u003cp\u003eThis is the OEM factory-replacement control transformer (part number \u003cstrong\u003eHT01BD236\u003c\/strong\u003e) for the \u003cstrong\u003eCarrier C4850C50AW03061\u003c\/strong\u003e packaged unit. The transformer steps down 120V line voltage to the 24V signal voltage that powers your thermostat, contactor coil, and control board. When this transformer fails, the entire control circuit goes dead — the thermostat loses power, the system won't respond to any call for heating or cooling, and no error codes will display because even the board has no power. A failed transformer is often misdiagnosed as a control board failure, so always verify 24V output at the secondary terminals before replacing larger components.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecs:\u003c\/strong\u003e 40VA rated | Primary: 120V | Secondary: 24V | OEM part number HT01BD236 | Factory-matched mounting footprint and terminal configuration\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM vs Generic:\u003c\/strong\u003e This OEM transformer is wound to exact VA and voltage tolerance specifications for the C4850C50AW03061. Generic transformers frequently underperform at rated VA, causing nuisance lockouts and premature control board failures due to voltage sag under load.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall Difficulty: 2\/5\u003c\/strong\u003e — Disconnect power at the breaker and verify zero voltage before beginning. Tools needed: flathead and Phillips screwdrivers, multimeter, wire nuts or spade terminals. Test secondary output (should read 24–28V AC) before buttoning up the unit. Label all wires before disconnecting.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWarranty:\u003c\/strong\u003e 1-year OEM factory warranty against defects. Ships same business day from our stocked warehouse.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eCompatibility:\u003c\/strong\u003e Engineered specifically for the Carrier \u003cstrong\u003eC4850C50AW03061\u003c\/strong\u003e packaged unit. Cross-reference OEM part number HT01BD236 on your unit's wiring diagram or data plate to confirm fitment. Not sure if this is your part? Our HVAC parts specialists verify fitment before you order — reach out before purchasing. In stock and ships today.\u003c\/p\u003e","brand":"Carrier","offers":[{"title":"OEM","offer_id":62909822140787,"sku":"CARRIE-C4850C50AW03061-TRANSFORMER-HT01BD236","price":47.25,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62909822173555,"sku":"CARRIE-C4850C50AW03061-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_61b41efe-68b7-4b75-a3c2-5055792d4dd9.jpg?v=1782938902","url":"https:\/\/nationalhvacparts.com\/products\/carrier-c4850c50aw03061-transformer-h302a1","provider":"National HVAC Parts","version":"1.0","type":"link"}