{"product_id":"payne-pa4gnxa60000aa-transformer-h30291","title":"OEM Payne Transformer 40VA 120V\/24V for PA4GNXA60000AA","description":"\u003ch1\u003eOEM Payne 40VA Control Transformer for Model PA4GNXA60000AA\u003c\/h1\u003e\u003cp\u003eThis OEM replacement transformer (part number \u003cstrong\u003eHT01BD209\u003c\/strong\u003e) is the factory-specified control circuit transformer for the \u003cstrong\u003ePayne PA4GNXA60000AA\u003c\/strong\u003e packaged unit. The transformer steps down 120V line voltage to 24V AC to power the control board, thermostat, contactor coil, and all low-voltage safety circuits. When this component fails, the entire control circuit loses power — resulting in a completely unresponsive system, a blank thermostat display, or a tripped secondary fuse with no apparent cause.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecs:\u003c\/strong\u003e 40VA rated | Primary voltage: 120V AC | Secondary voltage: 24V AC | OEM part number HT01BD209 | Factory-matched electrical characteristics for Payne PA4GNXA60000AA\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM vs Generic:\u003c\/strong\u003e This is a genuine OEM Payne transformer manufactured to exact VA and impedance specifications. Generic transformers can deliver unstable 24V output under load, causing nuisance lockouts, erratic board behavior, and premature contactor coil failure.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall difficulty: 2\/5\u003c\/strong\u003e — Disconnect power at the breaker before beginning. Tools needed: flathead and Phillips screwdrivers, needle-nose pliers, multimeter. Verify secondary voltage (should read 24–28V AC under load) after installation before reassembling the unit cabinet.\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 Engineered specifically for the Payne \u003cstrong\u003ePA4GNXA60000AA\u003c\/strong\u003e packaged unit. Verify your existing transformer's VA rating and primary\/secondary voltages on the unit data plate or original component label before ordering. Our fitment team is available to confirm compatibility prior to purchase — same-day shipping on all in-stock OEM parts.\u003c\/p\u003e","brand":"Payne","offers":[{"title":"OEM","offer_id":62908861514099,"sku":"PAYNE-PA4GNXA60000AA-TRANSFORMER-HT01BD209","price":34.95,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62908861546867,"sku":"PAYNE-PA4GNXA60000AA-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_1b984e13-738e-4bf5-bd27-55cae2f9591a.jpg?v=1780719025","url":"https:\/\/nationalhvacparts.com\/products\/payne-pa4gnxa60000aa-transformer-h30291","provider":"National HVAC Parts","version":"1.0","type":"link"}