{"product_id":"carrier-py3gna048115nb-transformer-h30291","title":"OEM Carrier Control Transformer 40VA 208\/230V for PY3GNA048115NB","description":"\u003ch1\u003eOEM Carrier Control Transformer 40VA 208\/230V–24V for Model PY3GNA048115NB\u003c\/h1\u003e\u003cp\u003eThis is the genuine OEM Carrier control transformer (part number \u003cstrong\u003eHT01BD209\u003c\/strong\u003e), factory-specified for the \u003cstrong\u003eCarrier PY3GNA048115NB\u003c\/strong\u003e packaged unit. The control transformer steps high-voltage line power (208\/230V primary) down to the 24V secondary signal that energizes your control board, thermostat, contactor coils, and relay circuits. When this transformer fails, the entire low-voltage control circuit goes dead — nothing operates, no thermostat response, no fan, no heat or cooling. A failed transformer is often misdiagnosed as a bad control board, making correct identification and prompt replacement critical.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecs:\u003c\/strong\u003e 208\/230V primary input | 24V secondary output | 40VA power rating | 50\/60 Hz | Replaces HT01BD207, HT01CN232, 9076-00\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM vs Generic:\u003c\/strong\u003e This factory-authorized OEM transformer is wound to exact Carrier tolerances. Generic aftermarket units frequently under-deliver on VA capacity, causing nuisance tripping of the control circuit fuse and shortening the life of downstream low-voltage components.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall difficulty: 2\/5\u003c\/strong\u003e — Shut off all power at the breaker and disconnect switch before starting. Tools needed: flathead and Phillips screwdrivers, wire strippers, multimeter. Photograph all existing wiring before disconnecting. Verify primary and secondary voltages with a multimeter after installation before closing the cabinet.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWarranty:\u003c\/strong\u003e 1-year OEM factory warranty against manufacturing defects. 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 as the factory-fit replacement for the \u003cstrong\u003eCarrier PY3GNA048115NB\u003c\/strong\u003e packaged unit. Verify your unit's data plate voltage against the 208\/230V primary requirement before ordering. Our team is available to confirm fitment — order with confidence and get your system back online today.\u003c\/p\u003e","brand":"Carrier","offers":[{"title":"OEM","offer_id":62640472031603,"sku":"CARRIE-PY3GNA048115NB-TRANSFORMER-HT01BD209","price":52.95,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62640472064371,"sku":"CARRIE-PY3GNA048115NB-TRANSFORMER-HT01BD209-GEN","price":46.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0984\/1190\/5395\/files\/nhvac-transformer-HT01BD209_e8997809-2740-4ab3-aae8-5423fb6b39ef.jpg?v=1775025423","url":"https:\/\/nationalhvacparts.com\/products\/carrier-py3gna048115nb-transformer-h30291","provider":"National HVAC Parts","version":"1.0","type":"link"}