{"product_id":"payne-pa1pnb036000aaaa-transformer-h30291","title":"OEM Payne Transformer 40VA 24V for PA1PNB036000AAAA — HT01BD209","description":"\u003ch1\u003eOEM Payne 40VA Control Transformer for Model PA1PNB036000AAAA (HT01BD209)\u003c\/h1\u003e\u003cp\u003eThis is the factory OEM replacement control transformer (part number \u003cstrong\u003eHT01BD209\u003c\/strong\u003e) for the \u003cstrong\u003ePayne PA1PNB036000AAAA\u003c\/strong\u003e split-system air conditioner. The transformer steps down 120V line voltage to the 24V signal required by the thermostat, contactor coil, and all low-voltage control circuits. When it fails, the entire control circuit goes dark — the thermostat display may go blank, the system will not respond to any calls for cooling or heating, and no safety or diagnostic functions will operate. A faulty transformer is often misdiagnosed as a thermostat or control board failure, making this an essential first-check component.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecs:\u003c\/strong\u003e 40VA rating | Primary: 120V | Secondary: 24V | OEM Part Number: HT01BD209 | Factory-matched output tolerance for stable low-voltage control circuit operation\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM vs Generic:\u003c\/strong\u003e This OEM transformer is wound to exact factory VA and voltage specifications. Undersized or off-tolerance generic transformers are prone to overheating under normal control circuit loads, risking damage to the control board and contactor coil — components far more expensive to replace.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall difficulty: 2\/5\u003c\/strong\u003e — Shut off power at the disconnect and breaker before beginning. Tools needed: flathead and Phillips screwdrivers, wire stripper, multimeter. Label or photograph all low-voltage wiring connections before removal. Verify primary and secondary voltages with a multimeter after installation before restoring the full system.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWarranty:\u003c\/strong\u003e 1-year OEM factory warranty. Orders placed before cutoff ship the same business day from our stocked warehouse.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eCompatibility:\u003c\/strong\u003e Designed and factory-specified for the Payne \u003cstrong\u003ePA1PNB036000AAAA\u003c\/strong\u003e 3-ton split-system condenser. Always confirm the OEM part number \u003cstrong\u003eHT01BD209\u003c\/strong\u003e and your unit's voltage requirements on the data plate before ordering. Our HVAC parts specialists are available to verify fitment — contact us before you order if you have any questions.\u003c\/p\u003e","brand":"Payne","offers":[{"title":"OEM","offer_id":62908976660851,"sku":"PAYNE-PA1PNB036000AAAA-TRANSFORMER-HT01BD209","price":34.95,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62908976693619,"sku":"PAYNE-PA1PNB036000AAAA-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_efa1159e-4da9-4889-974f-761d5fe32e47.jpg?v=1780719044","url":"https:\/\/nationalhvacparts.com\/products\/payne-pa1pnb036000aaaa-transformer-h30291","provider":"National HVAC Parts","version":"1.0","type":"link"}