{"product_id":"carrier-py3gpaa48090na-transformer-h30291","title":"OEM Carrier Control Transformer 40VA 208\/240V–24V — PY3GPAA48090NA","description":"\u003ch1\u003eOEM Carrier Control Transformer 40VA 208\/240V to 24V for Model PY3GPAA48090NA\u003c\/h1\u003e\u003cp\u003eThis is the genuine OEM Carrier control transformer (part #HT01BD209) factory-specified for the \u003cstrong\u003eCarrier PY3GPAA48090NA\u003c\/strong\u003e packaged gas\/electric unit. The transformer steps down line voltage (208\/240V) to the 24V signal required to power the thermostat, control board, contactor coil, and all low-voltage control circuits. When it fails, the entire control system goes dark — nothing responds, the thermostat goes blank, and the unit will not attempt to heat or cool. A failed transformer is one of the most commonly misdiagnosed HVAC faults; always test it before condemning the control board.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecs:\u003c\/strong\u003e 40VA rating | 208\/240V primary input | 24V secondary output | 50\/60Hz | OEM part #HT01BD209 | Also replaces HT01BD207, HT01CN232, 9076-00\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM vs Generic:\u003c\/strong\u003e This OEM unit is factory-wound to exact VA and voltage tolerances. Undersized or off-tolerance generic transformers can overload and fail prematurely, or deliver insufficient voltage to reliably pull in contactors and control relays.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall difficulty: 2\/5\u003c\/strong\u003e — Power down and lock out the unit at the disconnect before touching any wiring. Tools needed: flathead and Phillips screwdrivers, wire stripper, multimeter. Label and photograph all wiring before disconnecting. Verify 24V output with a meter before buttoning up the panel.\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 before 3PM local time for same-day dispatch.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eCompatibility:\u003c\/strong\u003e Designed as the factory replacement for \u003cstrong\u003eCarrier model PY3GPAA48090NA\u003c\/strong\u003e packaged gas\/electric units. Cross-references OEM part numbers HT01BD207, HT01CN232, and 9076-00. Confirm your unit's primary voltage on the data plate before ordering. Our parts specialists are available to verify fitment before you buy.\u003c\/p\u003e","brand":"Carrier","offers":[{"title":"OEM","offer_id":62640436773235,"sku":"CARRIE-PY3GPAA48090NA-TRANSFORMER-HT01BD209","price":50.95,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62640436806003,"sku":"CARRIE-PY3GPAA48090NA-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_ad5816d4-cdad-4965-b3e3-238bb99320f2.jpg?v=1775025799","url":"https:\/\/nationalhvacparts.com\/products\/carrier-py3gpaa48090na-transformer-h30291","provider":"National HVAC Parts","version":"1.0","type":"link"}