{"product_id":"carrier-py3gna048130nb-transformer-h30291","title":"OEM Carrier Control Transformer 40VA 208\/230V–24V for PY3GNA048130NB","description":"\u003ch1\u003eOEM Carrier Control Transformer 40VA 208\/230V–24V for Model PY3GNA048130NB\u003c\/h1\u003e\u003cp\u003eThis is the genuine OEM control transformer for the \u003cstrong\u003eCarrier PY3GNA048130NB\u003c\/strong\u003e packaged HVAC unit. The transformer steps down 208\/230V line voltage to the 24V signal required by your thermostat, contactor coil, gas valve, and control board. When it fails, the entire low-voltage control circuit goes dark — symptoms include a completely unresponsive thermostat, a system that won't call for heating or cooling, or a tripped secondary fuse with no obvious short elsewhere in the circuit.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecs:\u003c\/strong\u003e 40VA capacity | 208\/230V primary | 24V secondary | 50\/60 Hz | OEM part number HT01BD209 | Replaces superseded part numbers HT01BD207, HT01CN232, and 9076-00\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM vs Generic:\u003c\/strong\u003e The OEM transformer is wound and potted to Carrier's exact VA rating and insulation class. Generic aftermarket transformers frequently run undersized VA ratings, causing thermal overload under full control-circuit load and nuisance fuse trips.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall Difficulty: 2\/5\u003c\/strong\u003e — Shut off power at the disconnect and verify zero voltage before touching any wiring. Tools needed: flathead and Phillips screwdrivers, multimeter, needle-nose pliers. Label or photograph all wiring connections (R, C, and line-side terminals) before removal. Confirm secondary 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 Factory-matched replacement for Carrier model \u003cstrong\u003ePY3GNA048130NB\u003c\/strong\u003e. Also a direct replacement for other Carrier, Bryant, and Payne units originally equipped with HT01BD207 or HT01CN232 transformers — always confirm your unit's voltage requirements on the data plate before ordering. Our fitment team is available to verify compatibility before you buy.\u003c\/p\u003e","brand":"Carrier","offers":[{"title":"OEM","offer_id":62640469377395,"sku":"CARRIE-PY3GNA048130NB-TRANSFORMER-HT01BD209","price":50.95,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62640469410163,"sku":"CARRIE-PY3GNA048130NB-TRANSFORMER-HT01BD209-GEN","price":44.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0984\/1190\/5395\/files\/nhvac-transformer-HT01BD209_dc30b477-5a5d-482b-af33-cfc4013968e9.jpg?v=1775025501","url":"https:\/\/nationalhvacparts.com\/products\/carrier-py3gna048130nb-transformer-h30291","provider":"National HVAC Parts","version":"1.0","type":"link"}