OEM Carrier Transformer 40VA 120V/24V for Model FX4DNF061L00ABAA (HT01CN241)

This OEM Carrier transformer (part number HT01CN241) is the factory-specified replacement for the FX4DNF061L00ABAA fan coil air handler. The transformer steps down line voltage from 120V to 24V AC to power the low-voltage control circuit — including the thermostat, contactor coil, and control board. When this component fails, the entire control circuit goes dead: your thermostat goes blank, the system produces no response to calls for heating or cooling, and no fault codes appear because the board itself has no power.

• Specs: 40VA rated | 120V primary / 24V secondary | Class 2 low-voltage output | OEM part number HT01CN241 | Direct factory replacement
• OEM vs Generic: This is the genuine OEM Carrier transformer built to exact VA rating and insulation class specifications. Generic transformers with undersized VA ratings can overheat under full control-circuit load, causing nuisance shutdowns and premature failure.
• Install difficulty: 2/5 — Shut off power at the disconnect and breaker before servicing. Tools needed: flathead and Phillips screwdrivers, needle-nose pliers, multimeter (to confirm 24V output after install). Always label low-voltage wires before disconnecting terminals.
• Warranty: 1-year OEM factory warranty against defects. Ships same business day from our warehouse when ordered before cutoff.

Compatibility: Designed for the Carrier FX4DNF061L00ABAA fan coil air handler. Verify your existing transformer's VA rating and primary/secondary voltages on the unit's data plate or wiring diagram before ordering. Need help confirming fitment? Our HVAC parts specialists verify compatibility before you buy — no guesswork required. In stock and ships today.