OEM Carrier Transformer 40VA 120V/24V for Model FX4DNF061015ABAA (HT01CN241)

This OEM replacement transformer (part number HT01CN241) is the factory-specified control circuit transformer for the Carrier FX4DNF061015ABAA fan coil air handler. The transformer steps down 120V line voltage to the 24V AC signal that powers your thermostat, control board, and all low-voltage safety and sequencing circuits. When this component fails, the entire control circuit goes dead — the thermostat display may go blank, the system will not respond to any calls for heating or cooling, and no low-voltage components will function. A blown transformer is often caused by a wiring short downstream; always inspect the control wiring before replacing.

• Specs: 40VA rated | Primary: 120V AC | Secondary: 24V AC | OEM part number HT01CN241 | Factory-matched output for Carrier low-voltage control circuits
• OEM vs Generic: This is a genuine OEM Carrier transformer built to exact VA and voltage tolerances. Generic transformers frequently run underrated, causing overheating, premature failure, and potential damage to connected control boards and thermostats.
• Install Difficulty: 2/5 — Disconnect power at the breaker before beginning any work. Tools needed: flathead and Phillips screwdrivers, needle-nose pliers, multimeter for verifying 24V output after installation. Label or photograph all low-voltage wiring connections before disconnecting the old transformer.
• Warranty: 1-year OEM factory warranty against defects in materials and workmanship. Orders placed by 3PM ship same business day from our stocked warehouse.

Compatibility: Designed specifically for the Carrier FX4DNF061015ABAA fan coil air handler. Verify the OEM part number HT01CN241 against your unit's data plate or existing transformer label before ordering. If you have questions about fitment, our HVAC parts specialists confirm compatibility before your order ships — no guesswork required.