OEM Carrier Control Transformer 60VA 115/208/230V–24V for Model PH13NR03000GAFAA

This is the genuine OEM factory-specified control transformer (Part# HT01AW229) for the Carrier PH13NR03000GAFAA packaged heat pump unit. The transformer steps down the 115/208/230V line voltage to a safe 24V AC signal that powers the entire low-voltage control circuit — including the thermostat, contactor coil, reversing valve solenoid, and all safety circuits. When this transformer fails, the entire unit goes dark: no thermostat response, no contactor pull-in, and no operation in either heating or cooling mode. A blown fuse on the secondary winding is the most common symptom of a failed or overloaded transformer.

• Specs: 60 VA power rating | Multi-tap primary: 115V / 208V / 230V AC | Secondary: 24V AC | 50/60 Hz | Foot-mount configuration | OEM Part# HT01AW229 (supersedes HT01AW229A)
• OEM vs Generic: This is a genuine Carrier Factory Authorized Part. OEM transformers are wound to exact VA and voltage tolerances, ensuring the secondary holds steady 24V under full control-circuit load — critical for proper contactor and reversing valve operation. Off-brand units often sag under load, causing erratic lockouts.
• Install difficulty: 2/5 — Disconnect all power before servicing. Tools needed: multimeter, flathead and Phillips screwdrivers, needle-nose pliers, wire stripper. Always confirm which primary tap (115V, 208V, or 230V) matches your supply voltage before wiring. Photograph or label all low-voltage wiring before disconnection.
• Warranty: 1-year OEM factory warranty. In-stock unit ships same business day from our warehouse.

Compatibility: Direct OEM replacement for Carrier PH13NR03000GAFAA packaged heat pump systems. Verify your existing transformer's VA rating and primary voltage tap configuration against your unit's data plate before ordering. Cross-references: HT01AW229A. Need fitment confirmation? Our HVAC parts specialists verify compatibility before you buy — order with confidence.