{"product_id":"carrier-c4850c50zg030200-transformer-h302a1","title":"OEM Carrier Transformer 40VA 120V to 24V for C4850C50ZG030200 | National HVAC Parts","description":"\u003ch1\u003eOEM Carrier 40VA Control Transformer for Model C4850C50ZG030200\u003c\/h1\u003e\u003cp\u003eThis OEM replacement transformer (part# \u003cstrong\u003eHT01BD236\u003c\/strong\u003e) is the factory-specified control circuit transformer for the \u003cstrong\u003eCarrier C4850C50ZG030200\u003c\/strong\u003e packaged unit. The transformer steps down 120V line voltage to the 24V signal voltage required by the thermostat, control board, contactor coil, and all low-voltage safety circuits. When this component fails, the entire control circuit loses power — the thermostat goes blank, the system refuses to respond to any call for heating or cooling, and no safety lockout codes are generated because there is simply no control voltage present.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecs:\u003c\/strong\u003e 40VA rating | Primary: 120V | Secondary: 24V | Class 2 transformer | Direct OEM replacement for part number HT01BD236\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM vs Generic:\u003c\/strong\u003e This OEM unit meets Carrier's exact VA rating and insulation class specifications. Undersized generic transformers can overheat and fail prematurely when multiple 24V accessories (humidifiers, zone boards, UV lights) share the control circuit load.\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 stripper, multimeter. Verify 24V output on secondary terminals before reassembly. Note wire colors and terminal positions before disconnecting the old unit.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWarranty:\u003c\/strong\u003e 1-year OEM factory warranty. Leaves our warehouse the same business day your order is placed.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eCompatibility:\u003c\/strong\u003e Designed as a direct OEM drop-in for the Carrier \u003cstrong\u003eC4850C50ZG030200\u003c\/strong\u003e packaged unit. Confirm your existing transformer's VA rating and primary\/secondary voltages on the unit data plate or wiring diagram before ordering. Our parts specialists are available to verify fitment — order with confidence and get back up and running today.\u003c\/p\u003e","brand":"Carrier","offers":[{"title":"OEM","offer_id":62909782819187,"sku":"CARRIE-C4850C50ZG030200-TRANSFORMER-HT01BD236","price":47.25,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62909782851955,"sku":"CARRIE-C4850C50ZG030200-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_fb4905f5-ab15-4025-b2e3-2b7f1c003a0a.jpg?v=1782939044","url":"https:\/\/nationalhvacparts.com\/products\/carrier-c4850c50zg030200-transformer-h302a1","provider":"National HVAC Parts","version":"1.0","type":"link"}