OEM Carrier 40VA Control Transformer 208/230V–24V for Model PF4MNA025000ABAA

This OEM Carrier transformer (part #HT01CN241) is the factory-specified 24V control circuit replacement for the Carrier PF4MNA025000ABAA fan coil and air handler unit. The transformer steps down the 208/230V line voltage to the 24V signal required by your thermostat, control board, and all low-voltage switching components. When the transformer fails, the entire control circuit loses power — symptoms include a completely unresponsive thermostat, no blower operation, and system lockout with no fault codes displayed.

• Specs: 208/230V primary | 24V secondary | 40VA rated | Direct OEM replacement for part #HT01CN241 | Factory-matched to Carrier PF4MNA025000ABAA specifications
• OEM vs Generic: This is a genuine Carrier OEM transformer built to exact factory VA and voltage tolerances. Generic aftermarket transformers often run underrated VA loads, causing overheating and premature burnout — especially in multi-stage or communicating systems.
• Install difficulty: 2/5 — Always shut off power at the breaker before starting. Tools needed: flathead and Phillips screwdrivers, wire stripper, multimeter. Photograph all wiring connections before disconnecting. Verify 24V output with a multimeter after installation before restoring full power.
• Warranty: 1-year OEM manufacturer warranty. In-stock units ship same business day from our warehouse when ordered by 3 PM local time.

Compatibility: Designed for the Carrier PF4MNA025000ABAA fan coil/air handler. Verify your unit's data plate shows a 208/230V primary and 24V secondary control circuit before ordering. Our fitment team is available to confirm compatibility — contact us before you buy.