OEM Carrier 40VA Control Transformer HT01CN241 for Model FY4ANB060015AAAA

This is the factory OEM replacement transformer (part number HT01CN241) for the Carrier FY4ANB060015AAAA air handler. The transformer steps down 120V line voltage to the 24V signal voltage required to power your thermostat, control board, contactor coil, and all low-voltage safety circuits. When the transformer fails, the entire control circuit goes dead — your thermostat loses power, the system will not respond to any calls for heating or cooling, and in some cases a tripped internal fuse is the first clue. Replacing this part is one of the most cost-effective repairs in HVAC service.

• Specs: 40VA rating | Primary: 120V | Secondary: 24V | Factory-matched for Carrier FY4ANB060015AAAA air handler control circuits | Includes integral 3A secondary fuse protection on select configurations
• OEM vs Generic: The OEM HT01CN241 transformer is wound to exact Carrier factory tolerances, ensuring stable 24V output under full load. Generic transformers frequently sag under load, causing nuisance lockouts and shortened contactor coil life.
• Install difficulty: 2/5 — Shut off power at the disconnect and verify with a multimeter before touching any wiring. Tools needed: flathead and Phillips screwdrivers, multimeter, wire stripper. Photograph all wiring connections before disconnecting. Most installs complete in under 30 minutes.
• Warranty: 1-year OEM factory warranty against defects in materials and workmanship. Ships same business day from our stocked warehouse.

Compatibility: Designed specifically for the Carrier FY4ANB060015AAAA 5-ton air handler. Always verify your existing transformer's VA rating and primary/secondary voltages on the unit data plate before ordering. Our fitment team is available to confirm compatibility before you purchase — same-day shipping on all in-stock orders placed before 3 PM local time.