{"product_id":"payne-pa3pna030000aa-transformer-h30291","title":"OEM Payne Transformer 40VA 120V\/24V for PA3PNA030000AA","description":"\u003ch1\u003eOEM Payne 40VA Control Transformer for Model PA3PNA030000AA\u003c\/h1\u003e\u003cp\u003eThis is the OEM factory-replacement control transformer (part number \u003cstrong\u003eHT01BD209\u003c\/strong\u003e) designed specifically for the \u003cstrong\u003ePayne PA3PNA030000AA\u003c\/strong\u003e air conditioner. The transformer steps down line voltage (120V) to the 24V AC signal that powers your thermostat, control board, and all low-voltage control circuits. When this part fails, the entire control system goes dark — the thermostat becomes unresponsive, the system won't call for cooling or heating, and no error codes will display because the board itself has no power.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecs:\u003c\/strong\u003e 40VA rating | Primary: 120V AC | Secondary: 24V AC | OEM part number HT01BD209 | Factory-matched for Payne PA3PNA030000AA\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM vs Generic:\u003c\/strong\u003e OEM transformers are wound to exact VA and voltage tolerances required by the factory control board. Undersized or off-spec generic units can cause nuisance tripping, brownouts on the 24V circuit, or premature control board failure.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall difficulty: 2\/5\u003c\/strong\u003e — Shut off power at the disconnect and breaker before beginning. Tools needed: flathead and Phillips screwdrivers, needle-nose pliers, multimeter. Label all low-voltage wires before disconnecting the secondary terminals to avoid miswiring.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWarranty:\u003c\/strong\u003e 1-year OEM factory warranty. In stock and ships the same business day from our climate-controlled warehouse.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eCompatibility:\u003c\/strong\u003e Designed as a direct OEM replacement for the Payne \u003cstrong\u003ePA3PNA030000AA\u003c\/strong\u003e unit. Verify your existing transformer's VA rating and primary\/secondary voltages on the unit data plate or transformer label before ordering. Not sure it fits? Our HVAC parts specialists confirm fitment before every order — reach out before you buy.\u003c\/p\u003e","brand":"Payne","offers":[{"title":"OEM","offer_id":62908902048115,"sku":"PAYNE-PA3PNA030000AA-TRANSFORMER-HT01BD209","price":34.95,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62908902080883,"sku":"PAYNE-PA3PNA030000AA-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_b44604c8-4145-4e53-b375-fddfcfc6ca3a.jpg?v=1780718969","url":"https:\/\/nationalhvacparts.com\/products\/payne-pa3pna030000aa-transformer-h30291","provider":"National HVAC Parts","version":"1.0","type":"link"}