OEM Carrier 40VA Control Transformer 208/230V to 24V for Model PF4MNA049000ABAA

This OEM Carrier transformer (part number HT01CN241) is the factory-specified replacement for the Carrier PF4MNA049000ABAA air handler. The transformer steps down the unit's 208/230V line voltage to the 24V low-voltage signal required to power the control board, thermostat, gas valve, and all relay circuits. When this part fails, the entire control circuit goes dark — the thermostat becomes unresponsive, the system won't call for heating or cooling, and no error codes may even display because the board itself has lost power.

• Specs: 40VA power rating | 208/230V primary voltage | 24V secondary voltage | Class 2 control transformer | Foot-mount design | Approx. 1.25 lbs
• OEM vs Generic: This is a genuine Carrier OEM part manufactured to exact factory tolerances. Generic transformers may carry mismatched VA ratings or inferior core materials, leading to overheating, nuisance tripping, or premature control board failure.
• Install difficulty: 2/5 — Shut off all power to the unit at the breaker before beginning. Tools needed: flathead and Phillips screwdrivers, needle-nose pliers, multimeter. Photograph all wiring connections before disconnecting the old transformer. Verify 24V output with a multimeter after installation before restoring full power.
• Warranty: 1-year OEM factory warranty against defects. In-stock orders ship the same business day from our warehouse.

Compatibility: Direct OEM replacement for Carrier model PF4MNA049000ABAA air handlers. Also cross-compatible with select Bryant, Payne, ICP, Heil, Tempstar, and Arcoaire systems using the same 208/230V–24V 40VA specification — always verify against your unit's data plate before ordering. Have a fitment question? Our HVAC parts specialists verify compatibility before you buy. Order today and ship today.