OEM Carrier 40VA Control Transformer HT01CN241 for Model PF4MNA019000AAAA

This genuine OEM control transformer is the factory-specified replacement for the Carrier PF4MNA019000AAAA air handler. The transformer steps down 208/230V line voltage to the 24V signal that powers your thermostat, control board, contactor coil, and every safety circuit in the system. When this component fails, the entire control circuit goes dark — nothing responds to the thermostat, the system won't start, and in some cases a blown fuse or tripped breaker on the secondary side is the first clue. Replacing the transformer with the correct OEM part restores factory-matched performance and protects downstream components from voltage irregularities caused by undersized aftermarket units.

• Specs: 40VA capacity | 208/230V primary | 24V secondary | OEM part number HT01CN241 | Basler Electric model BE28316007 | Factory-matched impedance and thermal protection
• OEM vs Generic: This is a genuine Carrier OEM transformer. Generic 40VA transformers often lack internal thermal cutouts and run at looser voltage tolerances, risking damage to sensitive control boards and contactor coils over time.
• Install difficulty: 2/5 — Shut off power at the disconnect and breaker before working. Tools needed: flathead and Phillips screwdrivers, wire stripper, multimeter. Label all low-voltage wires before disconnecting. Confirm secondary fuse or circuit protection is intact before restoring power.
• Warranty: 1-year OEM manufacturer warranty. In-stock units ship same business day when ordered before cutoff.

Compatibility: Designed for the Carrier PF4MNA019000AAAA air handler. Also fits a wide range of Carrier, Bryant, and Payne equipment using the HT01CN241 transformer specification. Always verify the part number on your existing transformer's label or equipment wiring diagram before ordering. Our team is available to confirm fitment — reach out before you buy.