{"product_id":"carrier-c4850c50z3055200-transformer-h302a1","title":"OEM Carrier Transformer 40VA 120V-24V for C4850C50Z3055200","description":"\u003ch1\u003eOEM Carrier Control Transformer 40VA 120V\/24V for Model C4850C50Z3055200\u003c\/h1\u003e\u003cp\u003eThis OEM replacement transformer (part number \u003cstrong\u003eHT01BD236\u003c\/strong\u003e) is the factory-specified step-down transformer for the \u003cstrong\u003eCarrier C4850C50Z3055200\u003c\/strong\u003e packaged gas\/electric unit. The transformer converts 120V primary power to the 24V secondary voltage required to operate the control board, thermostat circuit, and all low-voltage safety controls. When this component fails, the entire control circuit goes dead — the thermostat displays nothing, the system will not call for heating or cooling, and no safety outputs will energize. A blown fuse on the control board is often the first symptom of a failing or overloaded transformer.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecs:\u003c\/strong\u003e 40VA rated | 120V primary \/ 24V secondary | Class 2 transformer | Factory-matched OEM tolerance for reliable low-voltage output | OEM Part Number: HT01BD236\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM vs Generic:\u003c\/strong\u003e OEM transformers are wound to exact VA and voltage specifications. Undersized or off-tolerance generic units can overheat, repeatedly blow fuses, or deliver insufficient voltage to hold contactors and gas valve coils closed — causing intermittent lockouts.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall difficulty: 2\/5\u003c\/strong\u003e — Disconnect power at the breaker before beginning. Tools needed: flathead and Phillips screwdrivers, wire nuts or spade connectors, multimeter for output verification. Label or photograph all wire connections before removal. Confirm output reads 24–28V AC after installation.\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\u003eC4850C50Z3055200\u003c\/strong\u003e packaged unit. Verify the 120V primary \/ 24V secondary \/ 40VA rating on your existing transformer's label before ordering to confirm fitment. If you are unsure, our HVAC parts specialists can verify compatibility before you purchase — no guesswork required. Order today and get same-day shipping on all in-stock OEM parts.\u003c\/p\u003e","brand":"Carrier","offers":[{"title":"OEM","offer_id":62909794976115,"sku":"CARRIE-C4850C50Z3055200-TRANSFORMER-HT01BD236","price":47.25,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62909795008883,"sku":"CARRIE-C4850C50Z3055200-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_b5d46a29-cf8f-4233-858f-23ac0add2198.jpg?v=1782939298","url":"https:\/\/nationalhvacparts.com\/products\/carrier-c4850c50z3055200-transformer-h302a1","provider":"National HVAC Parts","version":"1.0","type":"link"}