OEM Carrier Control Transformer 60VA 115/208/230V–24V for Model PH10JA01800GAGAA

This OEM control transformer (part number HT01AW229) is the factory-specified replacement for the Carrier PH10JA01800GAGAA unit. The control transformer steps down line voltage (115, 208, or 230V) to a safe 24V signal that powers the entire low-voltage control circuit — including the thermostat, contactor coil, and control board. When this transformer fails, the result is total system lockout: nothing responds, no thermostat signal reaches the unit, and the system appears completely dead. It is one of the first components to check when a unit shows zero control-circuit activity.

• Specs: 60VA rating | Primary: 115/208/230V multi-tap | Secondary: 24V | Foot-mounted design | OEM part number HT01AW229 / HT01AW229A
• OEM vs Generic: This is a genuine Carrier Factory Authorized Part built to exact VA tolerance. Undersized or off-tolerance generic transformers can overheat, trip internal thermal protection, and cause intermittent control failures — defeating the purpose of the repair.
• Install difficulty: 2/5 — Always disconnect power at the breaker and verify voltage is absent before touching any wiring. Tools needed: flathead and Phillips screwdrivers, wire stripper, multimeter. Confirm primary tap wiring matches your supply voltage (115V, 208V, or 230V) before reconnecting power.
• Warranty: 1-year OEM factory warranty. Ships same business day from our warehouse — order by 3 PM local time.

Compatibility: Designed as the direct OEM replacement for Carrier model PH10JA01800GAGAA. Cross-references include HT01AW229A. Verify your unit's data plate supply voltage before selecting your primary tap. Not sure it fits? Our HVAC parts specialists confirm fitment before you order — reach out before placing your order.