{"product_id":"carrier-c4850c50zg060900-transformer-h302a1","title":"OEM Carrier 40VA 120V to 24V Control Transformer for C4850C50ZG060900 — Ships Today","description":"\u003ch1\u003eOEM Carrier Control Circuit Transformer 40VA for Model C4850C50ZG060900\u003c\/h1\u003e\u003cp\u003eThis OEM replacement transformer (part# \u003cstrong\u003eHT01BD236\u003c\/strong\u003e) is the factory-specified step-down transformer for the \u003cstrong\u003eCarrier C4850C50ZG060900\u003c\/strong\u003e packaged unit. The transformer converts 120V line voltage to 24V DC to power the entire control circuit — including the thermostat, control board, contactor coil, and all safety switches. When it fails, the result is total control loss: the thermostat goes blank, the system won't respond to any input, and no components energize. A failed transformer is often misdiagnosed as a control board failure, making correct identification critical before replacing more expensive parts.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecs:\u003c\/strong\u003e 40VA rating | 120V primary \/ 24V secondary | Factory-matched output for Carrier control circuits | Direct OEM replacement for part# HT01BD236\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM vs Generic:\u003c\/strong\u003e OEM transformers are wound to exact VA and voltage tolerances required by Carrier's control board. Undersized or off-tolerance generic units can cause nuisance tripping, brownouts in the control circuit, or premature board failure — making the OEM part a worthwhile investment on a critical component.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall difficulty: 2\/5\u003c\/strong\u003e — Disconnect power at the breaker and verify voltage is absent before proceeding. Tools needed: flathead and Phillips screwdrivers, multimeter, wire nuts or spade terminals. Photograph existing wiring connections before removing the old unit.\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 Engineered specifically for the \u003cstrong\u003eCarrier C4850C50ZG060900\u003c\/strong\u003e 5-ton packaged gas\/electric unit. Verify your existing transformer's VA rating and primary\/secondary voltages on the unit's data plate before ordering. Not sure it fits? Our HVAC parts specialists confirm fitment before you buy — zero-hassle returns if it doesn't work for your application.\u003c\/p\u003e","brand":"Carrier","offers":[{"title":"OEM","offer_id":62909777936755,"sku":"CARRIE-C4850C50ZG060900-TRANSFORMER-HT01BD236","price":47.25,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62909777969523,"sku":"CARRIE-C4850C50ZG060900-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_95f3cd73-6789-4591-b1b8-6162a9dc5739.jpg?v=1782899221","url":"https:\/\/nationalhvacparts.com\/products\/carrier-c4850c50zg060900-transformer-h302a1","provider":"National HVAC Parts","version":"1.0","type":"link"}