OEM Carrier 60VA Control Transformer HT01AW229 for Model PH10JA024000ABAA

This is the factory-authorized OEM replacement control transformer for the Carrier PH10JA024000ABAA packaged unit. The control transformer steps down the 115/208/230V line-voltage primary supply to a safe 24V secondary output that powers the entire low-voltage control circuit — including the thermostat, contactor coils, and safety switches. When this transformer fails, the entire control circuit goes dead: the thermostat goes blank, the unit will not respond to any call for heating or cooling, and no safety lockout codes will even appear. A failed transformer is often misdiagnosed as a board failure, making correct part identification critical.

• Specs: 60VA power rating | Primary: 115/208/230VAC multi-tap | Secondary: 24VAC | 50/60 Hz | Foot-mount configuration | OEM part number HT01AW229 (supersedes HT01AW229A)
• OEM vs Generic: This is a Factory Authorized Part built to Carrier's exact VA rating and insulation class. Generic 60VA transformers frequently use thinner primary windings that run hotter, shortening service life and risking nuisance tripping of thermal cutouts on high-demand packaged units like the PH10JA024000ABAA.
• Install difficulty: 2/5 — Shut off all power at the disconnect before starting. Tools needed: flathead and Phillips screwdrivers, wire stripper, multimeter (verify 0V before touching wiring). Note primary tap wiring color for your supply voltage (115V, 208V, or 230V) before disconnecting. Reconnect secondary (24V) leads first, then primary leads. Restore power and verify 24–28VAC at secondary terminals.
• Warranty: 1-year OEM factory warranty against defects. Ships same business day from our warehouse when ordered before 3PM local time.

Compatibility: Verified fit for Carrier model PH10JA024000ABAA packaged unit. Also cross-references under HT01AW229A. Always confirm the failed transformer's VA rating and voltage taps against your unit's wiring diagram before ordering. Our HVAC parts specialists are available to confirm fitment — order with confidence and get your system back online fast.