OEM Carrier 40VA Control Transformer 208/230V–24V for Model PF1MNC030008AAAA

This OEM Carrier transformer (part number HT01CN241) is the factory-specified 24V control circuit transformer for the Carrier PF1MNC030008AAAA fan coil unit. The transformer steps down the 208/230V line voltage to the 24V AC signal that powers your thermostat, control board, and all low-voltage switching components. When this transformer fails, the entire control circuit goes dead — the thermostat goes blank, the system won't respond to any calls for heating or cooling, and no fault codes appear because the board itself has lost power.

• Specs: 208/230V Primary | 24V Secondary | 40VA Capacity | 50/60 Hz | Class 2 control transformer | Factory-matched Carrier OEM specification
• OEM vs Generic: This is a genuine Carrier Factory Authorized Part built to exact OEM tolerances. Generic transformers are often rated at marginal VA capacity, which can cause voltage sag under full control-circuit load, leading to erratic system behavior and premature board failure.
• Install Difficulty: 2/5 — Shut off all power at the breaker before beginning. Tools needed: flathead and Phillips screwdrivers, wire stripper, multimeter. Photograph all wiring before disconnecting. Verify 24V output with a multimeter before powering the system back on.
• Warranty: 1-year OEM manufacturer warranty. In-stock units ship the same business day when ordered by 5 PM local time.

Compatibility: Engineered for the Carrier PF1MNC030008AAAA fan coil unit. Also cross-references with ICP, Heil, Tempstar, and Comfortmaker systems using the HT01CN241 specification. Always verify your existing transformer's primary voltage, secondary voltage, and VA rating against your unit's data plate before ordering. Have questions about fitment? Our HVAC parts specialists verify compatibility before you buy — contact us today.