OEM Carrier 40VA Transformer HT01AW229 for Model PH10JA060000AAAA

This OEM step-down transformer is the factory-specified replacement for the Carrier PH10JA060000AAAA packaged heat pump unit. It converts 120V line voltage to the 24V AC signal that powers the entire low-voltage control circuit — including the thermostat, contactor coil, and control board. When this transformer fails, the system goes completely unresponsive: the thermostat goes blank or shows no communication, and no heating or cooling function can be initiated. A blown transformer is often caused by a wiring short downstream, so always inspect the 24V circuit for faults before installing the new unit.

• Specs: Input: 120V AC | Output: 24V AC | Rating: 40VA | OEM Part Number: HT01AW229 | Factory-matched construction for Carrier packaged units
• OEM vs Generic: This OEM transformer is wound to exact factory VA and voltage tolerances. Generic alternatives can run under-rated VA, causing premature thermal cutout trips and leaving the control circuit under-powered during peak demand.
• Install Difficulty: 2/5 — Shut off all power at the disconnect before beginning. Tools needed: flathead and Phillips screwdrivers, wire stripper, multimeter. Label and photograph all wiring connections before removing the old transformer. Verify output voltage with a multimeter before reassembling the unit.
• Warranty: 1-year OEM factory warranty. In stock and ships the same business day from our warehouse.

Compatibility: Designed specifically for the Carrier PH10JA060000AAAA packaged heat pump. Always confirm the OEM part number (HT01AW229) on your existing transformer's label or equipment data plate before ordering to ensure an exact fit. Our parts specialists are available to verify compatibility before you buy.