{"product_id":"payne-pa3pna024000ab-transformer-h30291","title":"OEM Payne Transformer 40VA 120V\/24V for PA3PNA024000AB","description":"\u003ch1\u003eOEM Payne 40VA Control Transformer HT01BD209 for Model PA3PNA024000AB\u003c\/h1\u003e\u003cp\u003eThis is the factory OEM replacement transformer (part number \u003cstrong\u003eHT01BD209\u003c\/strong\u003e) for the \u003cstrong\u003ePayne PA3PNA024000AB\u003c\/strong\u003e air conditioner. The transformer steps down 120V line voltage to the 24V signal used by your thermostat, control board, and contactor coil. When it fails, the entire low-voltage control circuit goes dead — your thermostat goes blank, the system won't respond to any calls for cooling or heating, and nothing appears to happen when you adjust the setpoint. A failed transformer is often misdiagnosed as a bad control board, so always test this component first with a multimeter.\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 PA3PNA024000AB control circuit requirements\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM vs Generic:\u003c\/strong\u003e This OEM unit is wound to exact VA and voltage tolerances required by the Payne factory spec. Undersized or off-tolerance generic transformers can overheat, trip their internal breaker repeatedly, or fail to hold 24V under full control-circuit load.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall difficulty: 2\/5\u003c\/strong\u003e — Disconnect power at the breaker and confirm voltage is absent before proceeding. Tools needed: flathead and Phillips screwdrivers, wire stripper, multimeter. Note wire colors and terminal labels before removing the old unit. Secure all wire nuts tightly after installation.\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\u003ePA3PNA024000AB\u003c\/strong\u003e split-system unit. Confirm your existing transformer's VA rating and primary\/secondary voltages on the data plate before ordering to ensure proper fitment. Our parts specialists are available to verify compatibility before you buy — same-day shipping available on all in-stock orders.\u003c\/p\u003e","brand":"Payne","offers":[{"title":"OEM","offer_id":62908902441331,"sku":"PAYNE-PA3PNA024000AB-TRANSFORMER-HT01BD209","price":34.95,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62908902474099,"sku":"PAYNE-PA3PNA024000AB-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_48d56851-b4bc-45b2-90e7-92c21ef33263.jpg?v=1780718967","url":"https:\/\/nationalhvacparts.com\/products\/payne-pa3pna024000ab-transformer-h30291","provider":"National HVAC Parts","version":"1.0","type":"link"}