OEM Carrier Transformer 60VA 230-24V for Model FD3ANA018000AAAA

This OEM Carrier transformer (part# HT01AW230) is the factory-specified replacement for the FD3ANA018000AAAA fan coil unit. The transformer steps down line voltage from 230V to the 24V AC required to power the control board, thermostat, and all low-voltage components. When this transformer fails, the entire control circuit loses power — nothing responds: no thermostat display, no contactor pull-in, and no system operation whatsoever. A blown transformer is often caused by a wiring short downstream, so always inspect low-voltage wiring before installing a replacement.

• Specs: 60VA rating | 230V primary input | 24V secondary output | Class 2 rated | OEM part number HT01AW230 | Factory-matched for FD3ANA018000AAAA fan coil
• OEM vs Generic: This OEM unit is wound to exact factory VA and voltage specifications. Undersized or off-tolerance generic transformers can overheat, trip thermal cutoffs, or fail prematurely — especially when control boards and zone valves share the same 24V circuit.
• Install difficulty: 2/5 — Shut off all power to the unit before beginning. Tools needed: flathead and Phillips screwdrivers, multimeter (to verify 24V output and check for shorts before reconnecting), wire nuts or spade connectors. Always check secondary circuit for shorts before powering up the new transformer.
• Warranty: 1-year OEM factory warranty. In stock and ships same business day from our warehouse.

Compatibility: Designed for the Carrier FD3ANA018000AAAA fan coil unit. Verify primary voltage (230V) and VA rating (60VA) on your unit's data plate before ordering. If your unit runs on a 208/240V supply, this transformer is rated to handle that range — confirm with your data plate. Our fitment team is available to verify compatibility before you order — same-day shipping on all in-stock OEM parts.