OEM Carrier Control Transformer 60VA 115/208/230V–24V for Model PH10PA048000ALAA

This is the factory OEM control transformer for the Carrier PH10PA048000ALAA packaged heat pump unit, identified by part number HT01AW229. The control transformer steps high-voltage line power (115, 208, or 230V) down to the 24V AC signal required to power the control board, thermostat, contactor coils, and all safety circuits. When this transformer fails, the entire low-voltage control circuit loses power — the result is a completely unresponsive system: no call-for-cooling, no call-for-heating, and no error codes from the board, because the board itself is unpowered. A failed transformer may also blow the system's 3A or 5A control fuse repeatedly.

• Specs: 60 VA power rating | Primary voltage: 115 / 208 / 230 VAC (multi-tap) | Secondary voltage: 24 VAC | Frequency: 50/60 Hz | Foot-mount chassis | OEM part number: HT01AW229
• OEM vs Generic: This is a genuine Carrier Factory Authorized Part. OEM transformers are wound and rated to exact VA tolerances for the PH10PA048000ALAA's control circuit load. Generic substitutes can run undervoltage under full control load, causing erratic board behavior, nuisance lockouts, or premature contactor coil failure.
• Install difficulty: 2/5 — Disconnect all power before servicing. Tools needed: flathead and Phillips screwdrivers, multimeter (verify 24V output after install), wire nuts or spade connectors. Photograph all wiring before removal. Replace the 24V fuse if it was blown before replacing the transformer.
• Warranty: 1-year OEM factory warranty. In-stock and ships same business day from our warehouse.

Compatibility: Designed as the direct OEM replacement for Carrier model PH10PA048000ALAA. Also fits select Bryant and Payne equipment sharing the same 60VA multi-tap transformer specification — verify primary voltage tap and VA rating on your unit's data plate before ordering. Need help confirming fitment? Our HVAC parts team verifies compatibility before you buy — reach out before you order.