OEM Carrier Transformer 40VA 120V to 24V for Model FX4DNF061L15ACAA

This OEM replacement transformer (part# HT01CN241) is the factory-specified control circuit transformer for the Carrier FX4DNF061L15ACAA air handler. The transformer steps down 120V line voltage to the 24V signal voltage required to power the control board, thermostat, and all low-voltage control circuits. When this transformer fails, the entire control system goes dark — the thermostat displays nothing, the system won't respond to any call for heating or cooling, and the control board shows no activity whatsoever.

• Specs: Input: 120V AC | Output: 24V AC | Capacity: 40VA | OEM Part Number: HT01CN241 | Primary/secondary wound to factory tolerance for stable, consistent control voltage
• OEM vs Generic: OEM transformers are wound and insulated to Carrier's exact specifications, ensuring proper VA output under full control-circuit load. Generic units may sag under load, causing erratic board behavior, nuisance lockouts, or premature failure of connected components.
• Install difficulty: 2/5 — Shut off all power to the air handler before beginning. Tools needed: flathead and Phillips screwdrivers, needle-nose pliers, multimeter (to verify 24V output after installation). Label or photograph all low-voltage wiring before disconnecting from the old transformer.
• Warranty: 1-year OEM factory warranty. In stock and ships same business day from our warehouse.

Compatibility: Designed and factory-matched for the Carrier FX4DNF061L15ACAA fan coil air handler. Verify your existing transformer's input voltage, output voltage, and VA rating on the unit's data plate or existing transformer label before ordering. Our fitment team is available to confirm compatibility prior to purchase — same-day shipping on all in-stock orders.