{"product_id":"payne-pa3ppa048000ab-transformer-h30291","title":"OEM Payne Transformer 40VA 120V-24V for PA3PPA048000AB","description":"\u003ch1\u003eOEM Payne Transformer 40VA 120V to 24V for Model PA3PPA048000AB\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 PA3PPA048000AB\u003c\/strong\u003e packaged air conditioning unit. The transformer steps down 120V line voltage to the 24V signal required by your thermostat, contactor coil, and all low-voltage control components. When this part fails, the entire control circuit goes dead — your thermostat loses communication with the unit, and nothing responds. If your system shows no signs of life despite power being present at the unit, a failed transformer is one of the first components to test.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecs:\u003c\/strong\u003e 40VA rated | 120V primary \/ 24V secondary | Factory-matched OEM part number HT01BD209 | Designed for continuous duty in packaged HVAC applications\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM vs Generic:\u003c\/strong\u003e This is the genuine OEM part built to Payne's exact VA rating and insulation class. Generic transformers with undersized VA ratings can overheat under full control-circuit load, leading to nuisance trips or premature failure — especially in systems with economizers or multiple relay coils.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall difficulty: 2\/5\u003c\/strong\u003e — Disconnect power completely before servicing. Tools needed: flathead and Phillips screwdrivers, wire stripper, multimeter. Label all low-voltage wires before disconnecting. Confirm primary voltage matches your supply before energizing.\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 stocked warehouse.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eCompatibility:\u003c\/strong\u003e Engineered specifically for the \u003cstrong\u003ePayne PA3PPA048000AB\u003c\/strong\u003e 4-ton packaged air conditioning unit. Always verify the OEM part number HT01BD209 against your unit's data plate or wiring diagram before ordering. Our HVAC parts specialists are available to confirm fitment — just reach out before you buy. In stock and ready to ship today.\u003c\/p\u003e","brand":"Payne","offers":[{"title":"OEM","offer_id":62908896280947,"sku":"PAYNE-PA3PPA048000AB-TRANSFORMER-HT01BD209","price":34.95,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62908896313715,"sku":"PAYNE-PA3PPA048000AB-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_3435d767-366b-43eb-9998-ab5a7a447161.jpg?v=1780718864","url":"https:\/\/nationalhvacparts.com\/products\/payne-pa3ppa048000ab-transformer-h30291","provider":"National HVAC Parts","version":"1.0","type":"link"}