{"product_id":"carrier-c4850c50ak03061-transformer-h302a1","title":"OEM Carrier Transformer 40VA 120V to 24V for C4850C50AK03061 — Ships Today","description":"\u003ch1\u003eOEM Carrier 40VA Control Transformer HT01BD236 for Model C4850C50AK03061\u003c\/h1\u003e\u003cp\u003eThis is the factory OEM replacement control transformer (part number \u003cstrong\u003eHT01BD236\u003c\/strong\u003e) for the \u003cstrong\u003eCarrier C4850C50AK03061\u003c\/strong\u003e packaged unit. The transformer steps down line voltage (120V) to the 24V signal voltage required to power the control board, thermostat circuit, contactor coil, and all low-voltage accessories. When this component fails, the entire control circuit goes dead — the thermostat loses communication, the contactor won't energize, and the system will not respond to any heating or cooling calls. If you're seeing a completely unresponsive unit with confirmed 120V supply present, this transformer is among the first components to test.\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 terminals and mounting footprint\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM vs Generic:\u003c\/strong\u003e OEM transformers are wound to exact VA and voltage tolerances for the Carrier C4850C50AK03061 control circuit. Generic units may output unstable 24V under load, causing intermittent lockouts, nuisance trips, or premature control board failure.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall Difficulty: 2\/5\u003c\/strong\u003e — Disconnect power at the breaker and confirm zero voltage with a multimeter before proceeding. Tools needed: flathead and Phillips screwdrivers, needle-nose pliers, multimeter. Label all low-voltage wiring before removal. Check for a blown secondary fuse as the root cause before replacing the transformer.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWarranty:\u003c\/strong\u003e 1-year OEM factory warranty included. 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 as a direct OEM replacement for the \u003cstrong\u003eCarrier C4850C50AK03061\u003c\/strong\u003e packaged unit. Verify your existing transformer's VA rating and primary\/secondary voltages against your unit's data plate before ordering. Not sure it fits? Our HVAC parts specialists confirm fitment before your order ships — reach out today and get your system back online fast.\u003c\/p\u003e","brand":"Carrier","offers":[{"title":"OEM","offer_id":62909831151987,"sku":"CARRIE-C4850C50AK03061-TRANSFORMER-HT01BD236","price":47.25,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62909831184755,"sku":"CARRIE-C4850C50AK03061-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_897aee56-1526-4470-ba3b-eab7e12eb14e.jpg?v=1782938870","url":"https:\/\/nationalhvacparts.com\/products\/carrier-c4850c50ak03061-transformer-h302a1","provider":"National HVAC Parts","version":"1.0","type":"link"}