{"product_id":"carrier-py3gpaa48115aa-transformer-h30291","title":"OEM Carrier Transformer 40VA 208\/240V–24V for PY3GPAA48115AA","description":"\u003ch1\u003eOEM Carrier Control Transformer 40VA 208\/240V to 24V for Model PY3GPAA48115AA\u003c\/h1\u003e\u003cp\u003eThis genuine OEM Carrier control transformer (part #HT01BD209) is the factory-specified replacement for the \u003cstrong\u003eCarrier PY3GPAA48115AA\u003c\/strong\u003e packaged unit. The transformer steps down line-voltage power (208\/240V primary) to the 24V low-voltage signal required by your thermostat, control board, contactor coil, and all other safety controls. When this transformer fails, the entire control circuit loses power — your thermostat goes blank, the unit becomes completely unresponsive, and no heating or cooling cycle can begin. It is one of the most common and most overlooked causes of a total system lockout.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecs:\u003c\/strong\u003e 40VA capacity | 208\/240V primary input | 24V secondary output | 50\/60 Hz | Class 2 control transformer | Replaces HT01BD207, HT01CN232, 9076-00\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM vs Generic:\u003c\/strong\u003e This is a genuine Carrier OEM transformer, wound to exact factory VA and voltage tolerances. Undersized or off-spec generic transformers can overheat, trip the built-in thermal fuse, and cause repeat failures that damage downstream control boards.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall difficulty: 2\/5\u003c\/strong\u003e — Disconnect power at the breaker and verify zero voltage with a multimeter before touching any wiring. Tools needed: flathead and Phillips screwdrivers, multimeter, wire nuts or terminal connectors. Label all wires before removal. Typical job time: 20–30 minutes.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWarranty:\u003c\/strong\u003e 1-year OEM factory warranty. Ships same business day from our warehouse — order by 3PM local time for same-day dispatch.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eCompatibility:\u003c\/strong\u003e Direct OEM fit for Carrier model \u003cstrong\u003ePY3GPAA48115AA\u003c\/strong\u003e. Always verify input voltage (208V or 240V) against your unit's data plate before ordering. This transformer is also compatible with select Bryant and Payne units sharing the same control circuit architecture. Not sure it's the right part? Our HVAC parts specialists verify fitment before you order — contact us today.\u003c\/p\u003e","brand":"Carrier","offers":[{"title":"OEM","offer_id":62640436478323,"sku":"CARRIE-PY3GPAA48115AA-TRANSFORMER-HT01BD209","price":47.25,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62640436511091,"sku":"CARRIE-PY3GPAA48115AA-TRANSFORMER-HT01BD209-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-HT01BD209_c20a2c5b-e26a-4d5d-87c0-95301210e4e2.jpg?v=1782942383","url":"https:\/\/nationalhvacparts.com\/products\/carrier-py3gpaa48115aa-transformer-h30291","provider":"National HVAC Parts","version":"1.0","type":"link"}