OEM Carrier 40VA Control Transformer 208/230V to 24V for Model PF1MNC037000AAAA

This OEM Carrier transformer (part number HT01CN241) is the factory-specified replacement for the Carrier PF1MNC037000AAAA fan coil and air handler unit. The control transformer steps down line voltage (208/230V) to the 24V signal voltage that powers the thermostat, control board, and all low-voltage switching throughout the system. When this transformer fails, the entire control circuit goes dark — the thermostat loses power, the system won't respond to any call for heating or cooling, and nothing works at all.

• Specs: 40VA capacity | 208/230V primary input | 24V AC secondary output | Basler Electric model BE28316007 | Genuine OEM — factory-matched to exact VA and voltage ratings
• OEM vs Generic: OEM transformers are wound and insulated to Carrier's exact factory tolerances, ensuring stable 24V output under full control-circuit load. Generic units often have substandard insulation and loose VA ratings that cause voltage sag, nuisance lockouts, and premature control board failure.
• Install difficulty: 2/5 — Always shut off power at the disconnect and breaker before servicing. Tools needed: flathead and Phillips screwdrivers, multimeter (to verify 24V output after install), wire stripper. Photograph all wiring connections before removal. Confirm 24V output post-installation before closing the unit.
• Warranty: 1-year OEM factory warranty. In stock and ships same business day from our warehouse.

Compatibility: Designed as a direct OEM replacement for the Carrier PF1MNC037000AAAA fan coil/air handler. Always verify your unit's data plate voltage (208V or 230V) matches your supply before ordering. Our parts specialists are available to confirm fitment — contact us before you order if you have any questions.