{"product_id":"payne-pa3gpaa48000aa-transformer-h30291","title":"OEM Payne Transformer 40VA 120V-24V for PA3GPAA48000AA","description":"\u003ch1\u003eOEM Payne Transformer 40VA 120V to 24V for Model PA3GPAA48000AA\u003c\/h1\u003e\u003cp\u003eThis OEM step-down transformer (part number \u003cstrong\u003eHT01BD209\u003c\/strong\u003e) is the factory-specified replacement for the \u003cstrong\u003ePayne PA3GPAA48000AA\u003c\/strong\u003e packaged gas\/electric unit. The transformer converts 120V line voltage to the 24V signal required by the control board, thermostat, and all low-voltage control circuits. When this component fails, the entire control circuit loses power — nothing responds, the thermostat goes blank, and the system will not start in any mode. It is often the first component to inspect when a unit appears completely unresponsive despite confirmed line voltage at the unit.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecs:\u003c\/strong\u003e Input 120V AC | Output 24V AC | 40VA rated | OEM part number HT01BD209 | Factory-matched for Payne PA3GPAA48000AA\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM vs Generic:\u003c\/strong\u003e This is a genuine OEM transformer wound to exact factory VA ratings and insulation class. Undersized or off-brand transformers can overheat under normal control circuit load, causing nuisance trips and premature failure of downstream 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 starting. Tools needed: flathead and Phillips screwdrivers, needle-nose pliers, wire nuts or spade connectors, multimeter. Label all wiring connections before removing the old unit.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWarranty:\u003c\/strong\u003e 1-year OEM factory warranty against defects in materials and workmanship. Ships same business day from our climate-controlled warehouse.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eCompatibility:\u003c\/strong\u003e Engineered specifically for the Payne PA3GPAA48000AA packaged unit. Confirm input\/output voltage and VA rating on your unit's data plate before ordering. Our parts specialists are available to verify fitment — order with confidence and get your system back online fast.\u003c\/p\u003e","brand":"Payne","offers":[{"title":"OEM","offer_id":62908904309107,"sku":"PAYNE-PA3GPAA48000AA-TRANSFORMER-HT01BD209","price":34.95,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62908904341875,"sku":"PAYNE-PA3GPAA48000AA-TRANSFORMER-HT01BD209-GEN","price":30.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0984\/1190\/5395\/files\/nhvac-transformer-HT01BD209_3d9f76a3-230a-4232-9166-c27d34262ce1.jpg?v=1780718848","url":"https:\/\/nationalhvacparts.com\/products\/payne-pa3gpaa48000aa-transformer-h30291","provider":"National HVAC Parts","version":"1.0","type":"link"}