OEM Carrier 40VA Control Transformer HT01CN241 for Model PF1MNB018005AAAA

This is the factory OEM replacement control transformer for the Carrier PF1MNB018005AAAA fan coil and air handler unit. The transformer steps down 208/230V line voltage to the 24V signal required to power your system's entire control circuit — including the thermostat, contactor coil, and safety switches. When this transformer fails, the result is total control loss: the thermostat goes dark, the system refuses to respond to any call for heating or cooling, and no components energize. Replacing this part restores the low-voltage backbone of the entire system.

• Specs: 208/230V Primary | 24V Secondary | 40VA rated | OEM Part # HT01CN241 | Direct factory drop-in replacement
• OEM vs Generic: This is a genuine Carrier OEM transformer wound to exact factory VA and voltage tolerances. Generic alternatives may run under-rated VA loads, causing premature thermal cutout trips and erratic system behavior under peak demand.
• Install difficulty: 2/5 — Shut off all power at the disconnect and breaker before starting. Tools needed: flathead and Phillips screwdrivers, wire stripper, multimeter, needle-nose pliers. Always photograph existing wiring before disconnecting. Verify 24V output with a multimeter after install before restoring full power.
• Warranty: 1-year OEM manufacturer's warranty. Ships same business day from our warehouse when ordered before cutoff.

Compatibility: Engineered as a direct OEM replacement for the Carrier PF1MNB018005AAAA fan coil/air handler. Confirm your existing transformer's primary voltage (208V or 230V) and VA rating on the unit's data plate before ordering. Our parts specialists are available to verify fitment — contact us before you order for complete peace of mind. Order now and ship today.