OEM Carrier Control Transformer 60VA 115/208/230V–24V for Model PH12NA02400GADAA

This OEM control transformer (part number HT01AW229) is the factory-specified replacement for the Carrier PH12NA02400GADAA packaged heat pump unit. The transformer steps down line-voltage power (115, 208, or 230V primary) to a safe 24V AC signal used by the control board, thermostat, and all low-voltage switching components. When this transformer fails, the entire control circuit goes dead — the thermostat goes blank, no relays pull in, and the system will not respond to any call for heating or cooling.

• Specs: 60VA power rating | 115/208/230V AC primary | 24V AC secondary | 50/60 Hz | Foot-mount configuration | Factory-matched Carrier RCD (Factory Authorized Part)
• OEM vs Generic: This is a genuine Carrier Factory Authorized Part, manufactured to exact VA and voltage tolerances. Generic transformers often carry loose voltage regulation tolerances, risking under-voltage faults on sensitive control boards and potentially voiding equipment warranties.
• Install difficulty: 2/5 — Disconnect all power before servicing. Tools needed: flathead and Phillips screwdrivers, wire stripper, needle-nose pliers, multimeter. Always photograph existing wiring connections before removal. Verify primary voltage tap matches your supply voltage before energizing.
• Warranty: 1-year OEM factory warranty. In-stock and ships same business day from our warehouse.

Compatibility: Designed as the direct OEM replacement transformer for Carrier model PH12NA02400GADAA. Also cross-references with Bryant and Payne equipment sharing the same 60VA 115/208/230V-24V specification. Always verify your unit's data plate primary voltage and VA rating before ordering. Have a question about fitment? Our HVAC parts specialists verify compatibility before you buy — contact us today.