OEM Carrier 40VA Control Transformer 208/230V–24V for Model PF1MNC036005AAAA

This is the genuine OEM Carrier control transformer (part number HT01CN241), factory-specified for the Carrier PF1MNC036005AAAA fan coil and air handler systems. The transformer steps down line voltage from 208/230V to a safe 24V AC signal that powers your entire low-voltage control circuit — thermostat, contactor coil, reversing valve, and control board alike. When this transformer fails, the 24V control circuit goes dead and the entire system becomes unresponsive: no heating, no cooling, no fan response from the thermostat. A failed transformer is often confirmed with a multimeter by measuring 0V AC on the secondary side with line voltage present at the primary.

• Specs: 208/230V Primary | 24V Secondary | 40VA rated | Direct OEM factory replacement | Part No. HT01CN241
• OEM vs Generic: This is a genuine Carrier Factory Authorized Part, manufactured to exact Carrier specifications for proper VA headroom, thermal protection class, and terminal compatibility. Generic transformers may lack built-in thermal cutoffs or carry insufficient VA capacity, leading to premature failure or nuisance tripping.
• Install difficulty: 2/5 — Shut off all power at the breaker before beginning. Tools needed: flathead and Phillips screwdrivers, multimeter, wire stripper. Label all low-voltage wires before disconnecting. Verify incoming line voltage matches transformer primary tap (208V or 230V) before powering up.
• Warranty: 1-year OEM manufacturer warranty. In-stock units ship same business day from our warehouse when ordered before cutoff.

Compatibility: Engineered as a direct drop-in replacement for the Carrier PF1MNC036005AAAA fan coil unit. Always verify your existing transformer's voltage rating and VA on the unit data plate before ordering. Our HVAC parts specialists are available to confirm fitment — contact us before you order if you have any questions.