{"product_id":"carrier-c4850c50aw02761-transformer-h302a1","title":"OEM Carrier 40VA 120V to 24V Control Transformer for C4850C50AW02761 — Ships Today","description":"\u003ch1\u003eOEM Carrier Transformer 40VA 120V\/24V for Model C4850C50AW02761\u003c\/h1\u003e\u003cp\u003eThis OEM step-down transformer (part number \u003cstrong\u003eHT01BD236\u003c\/strong\u003e) is the factory-specified replacement for the \u003cstrong\u003eCarrier C4850C50AW02761\u003c\/strong\u003e packaged unit. The transformer converts 120V line voltage to the 24V signal required to power the control board, thermostat, and all low-voltage system controls. When it fails, the entire control circuit goes dead — the thermostat loses communication, relays won't energize, and the system will not respond to any heating or cooling calls. A faulty transformer is often misdiagnosed as a control board failure, so always verify 24V output at the secondary terminals before replacing more expensive 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 output for Carrier low-voltage control circuits\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM vs Generic:\u003c\/strong\u003e This OEM transformer is wound to Carrier's exact VA and voltage tolerances. Generic transformers can under-deliver on VA capacity under load, causing nuisance tripping of the secondary-side fuse and intermittent control failures.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall difficulty: 2\/5\u003c\/strong\u003e — Disconnect power at the breaker before servicing. Tools needed: flathead and Phillips screwdrivers, multimeter, wire nuts or spade terminals. Always verify secondary output voltage after installation before closing the unit.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWarranty:\u003c\/strong\u003e 1-year OEM factory warranty. Ships same business day from our warehouse when ordered before cutoff.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eCompatibility:\u003c\/strong\u003e Designed as a direct OEM replacement for the Carrier \u003cstrong\u003eC4850C50AW02761\u003c\/strong\u003e packaged unit. Verify your existing transformer's VA rating and primary\/secondary voltages on the unit data plate before ordering. Not sure it fits? Our parts specialists confirm fitment before you buy — no guesswork. \u003cstrong\u003eOrder now and ship today.\u003c\/strong\u003e\u003c\/p\u003e","brand":"Carrier","offers":[{"title":"OEM","offer_id":62909822861683,"sku":"CARRIE-C4850C50AW02761-TRANSFORMER-HT01BD236","price":47.25,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62909822894451,"sku":"CARRIE-C4850C50AW02761-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_6a236883-8b60-4e6a-904d-490d8acc6c79.jpg?v=1782899130","url":"https:\/\/nationalhvacparts.com\/products\/carrier-c4850c50aw02761-transformer-h302a1","provider":"National HVAC Parts","version":"1.0","type":"link"}