{"product_id":"payne-pa3ppa042000aa-transformer-h30291","title":"OEM Payne Transformer 40VA 120V\/24V for PA3PPA042000AA","description":"\u003ch1\u003eOEM Payne Control Transformer 40VA for Model PA3PPA042000AA\u003c\/h1\u003e\u003cp\u003eThis OEM replacement transformer (part# \u003cstrong\u003eHT01BD209\u003c\/strong\u003e) is the factory-specified control transformer for the \u003cstrong\u003ePayne PA3PPA042000AA\u003c\/strong\u003e packaged air conditioning unit. The transformer steps down 120V line voltage to the 24V required by the control circuit, powering the thermostat, contactor coil, and all low-voltage safety and control components. When this transformer fails, the entire control circuit loses power — the result is a completely unresponsive system: the thermostat goes blank, the unit won't energize, and no heating or cooling modes will activate.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecs:\u003c\/strong\u003e OEM Part# HT01BD209 | Primary: 120V | Secondary: 24V | 40VA rated | Class 2 control transformer | Factory-matched for Payne PA3PPA042000AA\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM vs Generic:\u003c\/strong\u003e The OEM HT01BD209 transformer meets exact factory VA ratings and insulation class specifications. Generic transformers may be undersized in VA capacity, leading to overheating under full control-circuit load and premature failure.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall difficulty: 2\/5\u003c\/strong\u003e — Disconnect all power before servicing. Tools needed: flathead and Phillips screwdrivers, wire stripper, multimeter to verify 24V output after install. Label or photograph all low-voltage wiring connections before disconnecting.\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 \u003cstrong\u003ePA3PPA042000AA\u003c\/strong\u003e packaged unit. Verify primary voltage and VA rating on your existing transformer's label before ordering. If you're unsure of fitment, our HVAC parts specialists are available to confirm compatibility before your order ships.\u003c\/p\u003e","brand":"Payne","offers":[{"title":"OEM","offer_id":62908897001843,"sku":"PAYNE-PA3PPA042000AA-TRANSFORMER-HT01BD209","price":34.95,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62908897034611,"sku":"PAYNE-PA3PPA042000AA-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_8cdc95e6-5ecf-4cb9-a836-d45a9b8fa47c.jpg?v=1780718981","url":"https:\/\/nationalhvacparts.com\/products\/payne-pa3ppa042000aa-transformer-h30291","provider":"National HVAC Parts","version":"1.0","type":"link"}