OEM Carrier Control Transformer HT01BD242 for Model PH3GNA060000AB

This OEM step-down transformer is the factory-specified replacement for the Carrier PH3GNA060000AB packaged unit. It converts 120V line voltage to the 24V signal required by the thermostat, control board, and all low-voltage components in your system. When this transformer fails, the entire control circuit goes dead — the thermostat goes blank, the system won't respond to any call for heating or cooling, and no error codes are displayed because the board itself has lost power.

• Specs: OEM Part Number HT01BD242 | 120V primary / 24V secondary | 40VA rated | Class 2 insulated windings | Factory-matched output for Carrier control circuits
• OEM vs Generic: This OEM transformer is wound to Carrier's exact VA rating and voltage tolerance. Generic transformers can run under-rated VA, causing premature burnout under peak demand — especially in two-stage or communicating systems that draw more sustained 24V current.
• Install difficulty: 2/5 — Always shut off power at the breaker and disconnect service before touching any wiring. Tools needed: flathead and Phillips screwdrivers, wire stripper, multimeter. Photograph all wiring connections before removal. Verify 24V output after installation before restoring the control circuit.
• Warranty: 1-year OEM factory warranty. In-stock and ships same business day from our warehouse.

Compatibility: Engineered for the Carrier PH3GNA060000AB packaged unit. Always confirm the voltage rating and VA output on your unit's data plate before ordering. If you need fitment assistance, our HVAC parts specialists are standing by to verify compatibility before you buy — order today for same-day shipping!