{"product_id":"carrier-ph3gpaa60000aa-transformer-h3025m","title":"OEM Carrier Transformer 75VA 208\/240\/480V–24V for PH3GPAA60000AA","description":"\u003ch1\u003eOEM Carrier 75VA Control Transformer HT01BD242 for Model PH3GPAA60000AA\u003c\/h1\u003e\u003cp\u003eThis is the factory OEM replacement control transformer for the \u003cstrong\u003eCarrier PH3GPAA60000AA\u003c\/strong\u003e packaged heat pump unit. The transformer steps down high-voltage supply power (208\/240\/480V) to the 24VAC signal used by every component in the control circuit — thermostat, contactors, relay boards, and safety switches. When this transformer fails, the entire low-voltage control circuit goes dead: the thermostat goes blank, the system refuses to respond to any call for heating or cooling, and no error codes are generated because the board itself has no power. If your unit is completely unresponsive and you've confirmed 24VAC is absent at the secondary terminals, this transformer is the most common cause.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecs:\u003c\/strong\u003e OEM Part # HT01BD242 | Primary Input: 208\/240\/480VAC | Secondary Output: 24VAC | Power Rating: 75VA | Frequency: 50\/60Hz | Mount Type: Foot Mount | Factory-matched electrical characteristics\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM vs Generic:\u003c\/strong\u003e OEM transformers are wound and rated to exact factory tolerances, ensuring stable 24VAC output under full load. Generic units with loose VA tolerances can sag under peak demand, causing intermittent lockouts and nuisance tripping of low-voltage fuses.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall Difficulty: 3\/5\u003c\/strong\u003e — Disconnect and lock out all power before servicing. Tools needed: multimeter (verify 0V at primary before touching wiring), flathead and Phillips screwdrivers, wire nuts or spade connectors. Always verify primary voltage tap matches your supply voltage before energizing. If unsure, consult a licensed HVAC technician.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWarranty:\u003c\/strong\u003e 1-year OEM factory warranty against manufacturing defects. In-stock units ship same business day from our warehouse when ordered by 3 PM local time.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eCompatibility:\u003c\/strong\u003e Designed for the Carrier \u003cstrong\u003ePH3GPAA60000AA\u003c\/strong\u003e packaged heat pump and other Carrier, Bryant, and Payne equipment sharing the HT01BD242 specification. Verify your existing transformer's primary voltage tap, VA rating, and mounting style against your unit's data plate before ordering. Our HVAC parts specialists are available to confirm fitment — contact us before you order if you have any questions.\u003c\/p\u003e","brand":"Carrier","offers":[{"title":"OEM","offer_id":62641350902131,"sku":"CARRIE-PH3GPAA60000AA-TRANSFORMER-HT01BD242","price":70.2,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62641350934899,"sku":"CARRIE-PH3GPAA60000AA-TRANSFORMER-HT01BD242-GEN","price":23.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0984\/1190\/5395\/files\/nhvac-transformer-control-HT01BD242_4cf6cb83-5820-432f-b064-b3da1e6a1d9d.jpg?v=1782943288","url":"https:\/\/nationalhvacparts.com\/products\/carrier-ph3gpaa60000aa-transformer-h3025m","provider":"National HVAC Parts","version":"1.0","type":"link"}