OEM Carrier 40VA Control Transformer HT01CN241 for Model FX4CNF060000AAAA

This OEM control transformer (part number HT01CN241) is the factory-specified replacement for the Carrier FX4CNF060000AAAA fan coil air handler. The transformer steps down 120V line voltage to the 24V AC signal that powers the control board, thermostat circuit, and all low-voltage components. When this transformer fails, the entire control circuit goes dead — your thermostat will appear blank or unresponsive, and the system will not call for heating or cooling regardless of settings.

• Specs: 40VA rating | Primary: 120V AC | Secondary: 24V AC | OEM part number HT01CN241 | Direct factory replacement with matched VA rating and mounting footprint
• OEM vs Generic: This is a genuine Carrier OEM transformer wound to exact factory VA and impedance specifications. Generic replacements with mismatched VA ratings can overheat, trip the secondary fuse repeatedly, or deliver unstable 24V output that causes nuisance lockouts and premature control board failure.
• Install difficulty: 2/5 — Shut off all power at the breaker before beginning. Tools needed: flathead and Phillips screwdrivers, needle-nose pliers, multimeter. Verify 0V at primary terminals before disconnecting wiring. Photograph or label all low-voltage connections before removal to ensure correct reinstallation.
• Warranty: 1-year OEM factory warranty against defects. In stock and ships same business day from our warehouse — most orders placed before 3 PM local time leave today.

Compatibility: Designed specifically for the Carrier FX4CNF060000AAAA fan coil air handler. Always verify the 40VA rating and primary/secondary voltages against your unit's data plate before ordering. If you're unsure of fitment, our HVAC parts specialists are available to confirm compatibility before you purchase — no guesswork required.