{"product_id":"payne-pa3pna048000ab-transformer-h30291","title":"OEM Payne Transformer 40VA 120V\/24V for PA3PNA048000AB","description":"\u003ch1\u003eOEM Payne 40VA Control Transformer for Model PA3PNA048000AB\u003c\/h1\u003e\u003cp\u003eThis is the factory OEM replacement transformer (part number \u003cstrong\u003eHT01BD209\u003c\/strong\u003e) for the \u003cstrong\u003ePayne PA3PNA048000AB\u003c\/strong\u003e packaged air conditioning unit. The transformer steps down 120V line voltage to the 24V signal required by your thermostat, control board, contactor coil, and all low-voltage control circuits. When the transformer fails, the entire control system goes dark — the thermostat loses power, the system refuses to respond to any call for heating or cooling, and you may find a blown fuse on the control board. If nothing works and low-voltage fuses keep blowing, this transformer is the first component to test.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecs:\u003c\/strong\u003e 40VA rated | 120V primary \/ 24V secondary | OEM part number HT01BD209 | Factory-matched for Payne PA3PNA048000AB packaged units\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM vs Generic:\u003c\/strong\u003e This OEM transformer is wound to exact factory VA rating and insulation class. Undersized or off-brand transformers can overload under peak demand, causing repeated fuse failures and premature control board damage.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall difficulty: 2\/5\u003c\/strong\u003e — Disconnect power at the disconnect box before servicing. Tools needed: flathead and Phillips screwdrivers, multimeter, wire nuts or quick-connect terminals. Label all low-voltage wires before removal and verify 24V output after installation before restoring full power.\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 Designed specifically for the Payne PA3PNA048000AB 4-ton packaged air conditioner. Always verify your existing transformer's VA rating and primary\/secondary voltages against your unit's data plate before ordering. Our HVAC parts specialists are available to confirm fitment before you buy — order with confidence and get your system back online fast.\u003c\/p\u003e","brand":"Payne","offers":[{"title":"OEM","offer_id":62908899131763,"sku":"PAYNE-PA3PNA048000AB-TRANSFORMER-HT01BD209","price":34.95,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62908899164531,"sku":"PAYNE-PA3PNA048000AB-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_99757ebc-80ae-428a-a53c-cd2b973ed1d1.jpg?v=1780718976","url":"https:\/\/nationalhvacparts.com\/products\/payne-pa3pna048000ab-transformer-h30291","provider":"National HVAC Parts","version":"1.0","type":"link"}