OEM Carrier Control Transformer 40VA 208/230V–24V for Model PF4MNA049L00ABAA

This OEM Carrier transformer (part #HT01CN241) is the factory-specified 40VA step-down transformer for the Carrier PF4MNA049L00ABAA fan coil and air handler series. Its job is critical: it steps line voltage down from 208/230V to the 24V AC that powers your thermostat, control board, zone valves, and every low-voltage relay in the system. When this transformer fails, the entire control circuit goes dead — the thermostat goes blank, the system won't respond to calls for heating or cooling, and no fault codes will appear because there's no power to generate them.

• Specs: 208/230V primary | 24V secondary | 40VA rated | Class 2 control transformer | Direct OEM fit for Carrier PF4MNA049L00ABAA
• OEM vs Generic: This is a genuine Carrier Factory Authorized Part built to exact ICP/Carrier Corporation specifications. Generic transformers often deviate in VA rating or insulation class, risking nuisance tripping, premature failure, or damage to downstream control boards.
• Install difficulty: 2/5 — Shut off power at the disconnect before beginning. Locate the transformer in the air handler cabinet, note wire colors/terminals, disconnect leads, unbolt the mounting bracket, and reverse the steps with the new unit. Tools needed: flathead and Phillips screwdriver, needle-nose pliers, multimeter (verify 24V output before buttoning up).
• Warranty: 1-year OEM manufacturer warranty. Ships same business day from our warehouse when ordered before cutoff.

Compatibility: Designed for the Carrier PF4MNA049L00ABAA fan coil/air handler. Verify your unit's data plate shows a 208/230V primary control transformer requirement before ordering. Cross-references with ICP, Heil, Tempstar, and Comfortmaker systems using the same HT01CN241 specification. Have questions about fitment? Our HVAC parts specialists confirm compatibility before your order ships — reach out today.