OEM Carrier 40VA Control Transformer 208/230V to 24V — HT01CN241 for Model PF4MNA030L00AAAA

This is the genuine OEM replacement control transformer for the Carrier PF4MNA030L00AAAA fan coil unit, identified by OEM part number HT01CN241. The transformer steps down the 208/230V line voltage to the 24V AC signal that powers your thermostat, control board, and all low-voltage switching components. When this transformer fails, the entire control circuit goes dead — the thermostat goes blank, the unit refuses to respond to any command, and the system locks out completely. A failed transformer is often misdiagnosed as a control board failure, making correct identification critical before replacing costlier components.

• Specs: 208/230V Primary | 24V Secondary | 40VA Power Rating | Basler Electric Model BE28316007 | Direct OEM drop-in replacement
• OEM vs Generic: This is a genuine Carrier-sourced OEM transformer wound to exact VA and voltage tolerances. Aftermarket transformers often deviate in secondary voltage output under load, causing erratic low-voltage behavior and nuisance tripping of downstream boards.
• Install Difficulty: 2/5 — Shut off all power at the disconnect and breaker before servicing. Tools needed: flathead and Phillips screwdrivers, wire stripper, multimeter (to verify 24V output after installation). Label all wires before disconnecting the old unit. Always verify output voltage after replacement before closing the cabinet.
• Warranty: 1-year OEM manufacturer warranty. In-stock units ship same business day when ordered before cutoff.

Compatibility: Engineered as the factory-specified transformer for the Carrier PF4MNA030L00AAAA fan coil unit. Confirm your unit's line voltage (208V or 230V) matches the primary input before installing. If you have any fitment questions, our HVAC parts specialists verify compatibility before you order — ships fast from our stocked warehouse.