{"product_id":"payne-pa13pr04200gajaa-transformer-h4oyjb","title":"OEM Payne Transformer 40VA 120V-24V for PA13PR04200GAJAA","description":"\u003ch1\u003eOEM Payne Control Transformer 40VA for Model PA13PR04200GAJAA\u003c\/h1\u003e\u003cp\u003eThis is the factory OEM replacement transformer (part# \u003cstrong\u003eHT01AW229\u003c\/strong\u003e) for the \u003cstrong\u003ePayne PA13PR04200GAJAA\u003c\/strong\u003e split-system air conditioner. The transformer steps down 120V line voltage to the 24V signal voltage that powers your thermostat, contactor coil, and all control-circuit components. When this part fails, the entire control circuit goes dead — your thermostat goes blank, the system refuses to respond to any call for cooling or heating, and no error codes appear because the board itself has no power. It is one of the first components to inspect during a no-response diagnostic.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecs:\u003c\/strong\u003e 40VA capacity | 120V primary input | 24V secondary output | Spade or lead-wire termination | Class 2 rated control circuit transformer\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM vs Generic:\u003c\/strong\u003e The OEM HT01AW229 is wound and insulated to Payne's factory specification, ensuring clean 24V output with minimal voltage drop. Off-brand substitutes are frequently under-rated in VA capacity, causing them to overheat under full control-circuit load and fail prematurely — often taking a control board with them.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall difficulty: 2\/5\u003c\/strong\u003e — Disconnect power at the breaker and verify zero voltage with a multimeter before touching any wiring. Tools needed: flathead and Phillips screwdrivers, multimeter, wire stripper. Label or photograph all wire connections before removal. Confirm 24V output with a meter before reassembling the cabinet.\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 for the Payne \u003cstrong\u003ePA13PR04200GAJAA\u003c\/strong\u003e 4-ton single-stage R-410A split-system condenser. Always verify your unit's data plate voltage ratings before ordering. Not sure it fits? Our parts team confirms fitment before you purchase — same-day shipping on all in-stock orders.\u003c\/p\u003e","brand":"Payne","offers":[{"title":"OEM","offer_id":62909071786355,"sku":"PAYNE-PA13PR04200GAJAA-TRANSFORMER-HT01AW229","price":34.95,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62909071819123,"sku":"PAYNE-PA13PR04200GAJAA-TRANSFORMER-HT01AW229-GEN","price":30.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0984\/1190\/5395\/files\/nhvac-transformer-HT01AW229_6dbcca64-1339-4327-ae1d-c2b04d76c5b9.jpg?v=1780718805","url":"https:\/\/nationalhvacparts.com\/products\/payne-pa13pr04200gajaa-transformer-h4oyjb","provider":"National HVAC Parts","version":"1.0","type":"link"}