OEM Carrier 40VA Control Transformer 208/230V–24V for Model PF4MNA061000ABAA

This OEM Carrier control transformer (part #HT01CN241) is the factory-specified replacement for the Carrier PF4MNA061000ABAA air handler. The transformer steps down 208/230V line voltage to the 24V low-voltage signal that powers your thermostat, control board, and zone valves. When this component fails, the entire control circuit goes dead — your thermostat goes blank, the system won't respond to calls for heating or cooling, and no fault codes are generated because the board itself loses power.

• Specs: 208/230V Primary | 24V Secondary | 40VA power rating | Direct OEM drop-in replacement for part #HT01CN241
• OEM vs Generic: OEM transformers are wound to Carrier's exact VA and voltage specifications, ensuring stable 24V output under full control load. Generic units often run under-spec in VA capacity, causing voltage sag that triggers nuisance lockouts and premature board failures.
• Install difficulty: 2/5 — Shut off power at the disconnect and breaker before opening the air handler cabinet. Tools needed: flathead and Phillips screwdrivers, needle-nose pliers, multimeter (verify 0V before touching wiring). Photograph all wire connections before removing the old transformer. Standard spade and wire-nut connections make reinstallation straightforward.
• Warranty: 1-year OEM manufacturer warranty. In-stock units ship same business day when ordered by 5 PM local time.

Compatibility: Engineered as the direct OEM replacement for the Carrier PF4MNA061000ABAA air handler. Verify your unit's data plate lists a 208/230V primary and 24V secondary transformer before ordering — mixing voltage specs will damage the control board. Have your model and serial number ready and our team will confirm fitment before your order ships.