OEM Carrier 40VA Control Transformer HT01CN241 for Model FX4CNF060T00AAAA

This OEM replacement transformer (part number HT01CN241) is the factory-specified control transformer for the Carrier FX4CNF060T00AAAA fan coil air handler. The transformer steps down 120V line voltage to 24V AC to power the low-voltage control circuit — including the thermostat, contactor coils, and control board. When this transformer fails, absolutely nothing works: the thermostat goes dark, no calls for heating or cooling are answered, and the entire system appears completely dead. A failed transformer is often misdiagnosed as a bad control board, making correct identification critical before replacing more expensive components.

• Specs: 40VA rating | 120V primary / 24V secondary | Single-phase | Direct OEM replacement for part number HT01CN241 | Factory-matched output for stable low-voltage control signal
• OEM vs Generic: This OEM transformer meets Carrier's exact VA rating and insulation class. Undersized or off-brand transformers can sag under load, causing erratic thermostat behavior, nuisance lockouts, and premature contactor coil burnout.
• Install difficulty: 2/5 — Shut off all power at the breaker and air handler disconnect before beginning. Tools needed: flathead and Phillips screwdrivers, needle-nose pliers, multimeter (to confirm 0V before touching wiring and to verify 24V output after install). Photograph all low-voltage wiring before disconnecting terminals.
• Warranty: 1-year OEM factory warranty. In stock and ships same business day from our warehouse.

Compatibility: Designed as a direct OEM replacement for the Carrier FX4CNF060T00AAAA 5-ton fan coil air handler. Always verify your existing transformer's VA rating and primary/secondary voltages on the unit data plate or wiring diagram before ordering. Our parts specialists are available to confirm fitment — order with confidence and receive fast, same-day shipping.