OEM Carrier Transformer 40VA 120V/24V for Model FX4DNF061T10ABAA (HT01CN241)

This is the OEM factory-replacement transformer (part number HT01CN241) for the Carrier FX4DNF061T10ABAA fan coil air handler. The transformer steps down line voltage (120V) to the 24V AC control circuit voltage required to power the thermostat, control board, and all low-voltage switching components. When the transformer fails, the entire control circuit goes dark — the thermostat loses power, the air handler won't respond to calls for heating or cooling, and in many cases nothing appears to happen at all when the system is energized. A failed transformer is one of the most commonly overlooked causes of a completely unresponsive HVAC system.

• Specs: 40VA rating | Primary: 120V AC | Secondary: 24V AC | OEM part number HT01CN241 | Factory-matched footprint for direct drop-in replacement
• OEM vs Generic: OEM transformers are wound to exact VA and voltage tolerances required by the Carrier control board. Undersized or off-tolerance generic units can cause nuisance tripping, control board brownouts, and premature contactor coil failure.
• Install difficulty: 2/5 — Disconnect power at the breaker and verify zero voltage before beginning. Tools needed: flathead and Phillips screwdrivers, multimeter, wire nuts or spade terminals. Always verify secondary output voltage (24V AC) after installation before restoring full power.
• Warranty: 1-year OEM factory warranty against defects in materials and workmanship. Orders placed before our same-day cutoff ship the same business day.

Compatibility: Designed specifically for the Carrier FX4DNF061T10ABAA fan coil air handler. Cross-reference OEM part number HT01CN241 against your unit's data plate to confirm fitment. If you're unsure, our HVAC parts specialists are available to verify compatibility before you order — no guesswork, no return hassle.