OEM Carrier 60VA Control Transformer HT01AW229 for Model PH12NA030000ABAA

This is the factory-authorized OEM replacement control transformer for the Carrier PH12NA030000ABAA packaged heat pump unit. The transformer steps down line voltage (115/208/230V primary) to a safe 24V secondary signal that powers the entire low-voltage control circuit — including the thermostat, contactor coils, and control board. When it fails, the system will appear completely unresponsive: no thermostat display, no contactor pull-in, and no staging response from any component on the control circuit.

• Specs: 60 VA power rating | 115/208/230 VAC primary | 24 VAC secondary | 50/60 Hz | Foot-mount configuration | Dimensions: 4 in L × 2-5/8 in W | OEM Part No. HT01AW229
• OEM vs Generic: Factory-authorized OEM transformers are wound to exact VA tolerances and insulation ratings for the PH12NA030000ABAA platform. Undersized or off-tolerance generic units risk nuisance tripping, overheating, or premature control board failure due to voltage sag under load.
• Install difficulty: 2/5 — Disconnect all power and verify zero voltage before touching any terminals. Tools needed: flathead and Phillips screwdrivers, wire stripper, multimeter (verify 24V output after installation). Photograph existing wiring connections before disconnecting. Foot-mount hardware typically reuses existing chassis screws.
• Warranty: 1-year OEM factory warranty against defects in materials and workmanship. Orders placed before cutoff ship same business day from our warehouse.

Compatibility: Designed and factory-matched for Carrier model PH12NA030000ABAA packaged heat pump units. Also cross-references to Bryant and Payne equipment sharing the same 60VA 115/208/230V-24V transformer specification — verify your unit's data plate voltage and VA rating before ordering. Have questions about fitment? Our HVAC parts specialists confirm compatibility before every order.