{"product_id":"payne-pa3gna030000aa-transformer-h30291","title":"OEM Payne Transformer 40VA 120V-24V for PA3GNA030000AA","description":"\u003ch1\u003eOEM Payne 40VA Transformer HT01BD209 for Model PA3GNA030000AA\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 PA3GNA030000AA\u003c\/strong\u003e air conditioner. The transformer converts 120V line voltage to the 24V AC signal that powers your thermostat, contactor coil, and control board. When this part fails, the entire low-voltage control circuit goes dead — your thermostat will display nothing, the system won't respond to any call for cooling or heating, and no components will energize. It is one of the first parts HVAC technicians check when a system shows absolutely zero response.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecs:\u003c\/strong\u003e 40VA rating | 120V primary \/ 24V secondary | Class 2 transformer | OEM part number HT01BD209 | Factory-matched to Payne PA3GNA030000AA control circuit specifications\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM vs Generic:\u003c\/strong\u003e This is a genuine OEM Payne transformer, ensuring exact VA rating, terminal compatibility, and mounting dimensions. Generic transformers often have looser VA tolerances, which can cause nuisance tripping on 3A fuses and shortened control board life.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall difficulty: 2\/5\u003c\/strong\u003e — Disconnect power at the breaker before starting. Tools needed: flathead and Phillips screwdrivers, needle-nose pliers, multimeter (to verify 24V output after install). Always label or photograph 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. Orders placed before cutoff ship same business day from our warehouse.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eCompatibility:\u003c\/strong\u003e Designed specifically for the Payne \u003cstrong\u003ePA3GNA030000AA\u003c\/strong\u003e split-system air conditioner. Verify your existing transformer's VA rating and primary\/secondary voltages on the unit's data plate before ordering. Not sure about fitment? Our HVAC parts specialists will confirm compatibility before your order ships.\u003c\/p\u003e","brand":"Payne","offers":[{"title":"OEM","offer_id":62908907323763,"sku":"PAYNE-PA3GNA030000AA-TRANSFORMER-HT01BD209","price":34.95,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62908907356531,"sku":"PAYNE-PA3GNA030000AA-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_c5cd9e9b-1ed1-4de9-9c0a-9827459d6184.jpg?v=1780718840","url":"https:\/\/nationalhvacparts.com\/products\/payne-pa3gna030000aa-transformer-h30291","provider":"National HVAC Parts","version":"1.0","type":"link"}