{"product_id":"payne-pa2ppb048000aa-transformer-h30291","title":"OEM Payne Transformer 40VA 120V\/24V for PA2PPB048000AA","description":"\u003ch1\u003eOEM Payne 40VA Control Transformer for Model PA2PPB048000AA\u003c\/h1\u003e\u003cp\u003eThis is the factory-specified OEM replacement transformer (part number \u003cstrong\u003eHT01BD209\u003c\/strong\u003e) for the \u003cstrong\u003ePayne PA2PPB048000AA\u003c\/strong\u003e packaged heat pump system. The transformer steps down 120V line voltage to the 24V signal voltage that powers your thermostat, contactor coil, control board, and all low-voltage safety circuits. When the transformer fails — often from a short in the control circuit or a blown fuse — the entire system goes silent: no thermostat response, no contactor click, no fan, no heat or cooling whatsoever.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecs:\u003c\/strong\u003e 40VA rating | 120V primary \/ 24V secondary | Direct OEM replacement | Part number HT01BD209 | Factory-matched output voltage tolerance\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM vs Generic:\u003c\/strong\u003e OEM transformers from Payne are wound to exact VA and voltage specifications. Generic substitutes frequently run undervoltage under load, causing nuisance lockouts, chattering contactors, and premature control board failure — false economies that cost more in callbacks than the part savings.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall difficulty: 2\/5\u003c\/strong\u003e — Shut off power at the disconnect and breaker before starting. Tools needed: flathead and Phillips screwdrivers, needle-nose pliers, multimeter (verify 0V before touching wiring). Photograph or label all wiring before disconnecting. Reconnect primary (line) wires first, secondary (24V) wires last.\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\u003ePA2PPB048000AA\u003c\/strong\u003e 4-ton packaged heat pump unit. Verify your existing transformer's VA rating and primary\/secondary voltages on the unit's data plate before ordering. If your system repeatedly blows transformers, inspect the 24V circuit for shorts before installing the new unit. Our technical team is available to confirm fitment before you order — same-day shipping on all in-stock parts.\u003c\/p\u003e","brand":"Payne","offers":[{"title":"OEM","offer_id":62908918038899,"sku":"PAYNE-PA2PPB048000AA-TRANSFORMER-HT01BD209","price":34.95,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62908918071667,"sku":"PAYNE-PA2PPB048000AA-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_1bab2f78-1fa1-42c0-9f82-5b85e5197d45.jpg?v=1780718941","url":"https:\/\/nationalhvacparts.com\/products\/payne-pa2ppb048000aa-transformer-h30291","provider":"National HVAC Parts","version":"1.0","type":"link"}