OEM Carrier 60VA Control Transformer HT01AW229 for Model PH11JA024000AAAA

This is the factory-specified OEM control transformer for the Carrier PH11JA024000AAAA packaged heat pump unit. The transformer steps down the high-voltage line supply (115, 208, or 230V primary) to the 24V AC secondary voltage that powers the entire low-voltage control circuit — including the thermostat, contactors, reversing valve, and safety controls. When this transformer fails, the result is total loss of control voltage: the thermostat goes blank, the unit ignores all calls for heating or cooling, and no low-voltage components respond. A failed or shorted transformer is one of the most common causes of a completely non-responsive HVAC system.

• Specs: 60VA power rating | 115/208/230V AC multi-tap primary | 24V AC secondary | 50/60 Hz | Foot-mount configuration | OEM Part Number: HT01AW229
• OEM vs Generic: This is a genuine Carrier Factory Authorized Part. OEM transformers are wound to exact VA and voltage tolerances, protecting downstream low-voltage components. Generic substitutes often use inferior core materials, run hot under load, and can damage control boards — always use OEM in packaged units where board replacement is costly.
• Install difficulty: 3/5 — Disconnect all power before beginning. Tools needed: multimeter (verify 0V before touching), screwdrivers, wire nuts or terminals, and a wiring diagram (located on the unit's access panel). Always confirm primary voltage tap matches your supply voltage (115V, 208V, or 230V) before energizing.
• Warranty: 1-year OEM factory warranty against defects. In-stock and ships same business day from our warehouse.

Compatibility: Engineered as the direct OEM replacement for Carrier model PH11JA024000AAAA. Also cross-references as HT01AW229A. Verify your unit's primary voltage supply (115V, 208V, or 230V) and confirm the 60VA rating before ordering. Have a question about fitment? Our HVAC parts specialists verify compatibility before you buy — contact us before placing your order.