{"product_id":"payne-pa1hpa120000aaaa-transformer-h302a1","title":"OEM Payne Transformer 40VA 120\/24V for PA1HPA120000AAAA","description":"\u003ch1\u003eOEM Payne Transformer 40VA 120\/24V for Model PA1HPA120000AAAA\u003c\/h1\u003e\u003cp\u003eThis OEM replacement transformer (part number \u003cstrong\u003eHT01BD236\u003c\/strong\u003e) is the factory-specified control circuit transformer for the \u003cstrong\u003ePayne PA1HPA120000AAAA\u003c\/strong\u003e heat pump system. The transformer steps down line voltage (120V) to the 24V signal voltage required to power the control board, thermostat, and all low-voltage switching circuits. When this component fails, the result is total system non-response — a blank thermostat screen, no contactor pull-in, and no heating or cooling — even though the unit may have full line voltage present at the disconnect.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecs:\u003c\/strong\u003e 40VA rated | Primary: 120V | Secondary: 24V | Factory-matched OEM part number HT01BD236 | Designed for continuous-duty low-voltage control circuits\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM vs Generic:\u003c\/strong\u003e This is a genuine OEM Payne transformer engineered to exact VA and voltage specifications for the PA1HPA120000AAAA. Generic transformers frequently underperform on VA rating, causing nuisance tripping of the secondary fuse and premature failure under normal system loads.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall difficulty: 2\/5\u003c\/strong\u003e — Shut off all power at the disconnect and breaker before beginning. Tools needed: flathead and Phillips screwdrivers, wire stripper, multimeter. Label and photograph all low-voltage wire connections before removing the old transformer. Verify 24V output after installation before closing the panel.\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 climate-controlled parts warehouse.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eCompatibility:\u003c\/strong\u003e Designed specifically for the Payne \u003cstrong\u003ePA1HPA120000AAAA\u003c\/strong\u003e heat pump. Always verify your unit's data plate voltage requirements and existing transformer VA rating before ordering to confirm fitment. Our parts specialists are available to verify compatibility before you purchase — contact us with your model and serial number for peace of mind.\u003c\/p\u003e","brand":"Payne","offers":[{"title":"OEM","offer_id":62909000024435,"sku":"PAYNE-PA1HPA120000AAAA-TRANSFORMER-HT01BD236","price":34.95,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62909000057203,"sku":"PAYNE-PA1HPA120000AAAA-TRANSFORMER-HT01BD236-GEN","price":30.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0984\/1190\/5395\/files\/nhvac-transformer-HT01BD236_d2fa6580-853d-4cb9-b016-1e918f599489.jpg?v=1780718781","url":"https:\/\/nationalhvacparts.com\/products\/payne-pa1hpa120000aaaa-transformer-h302a1","provider":"National HVAC Parts","version":"1.0","type":"link"}