OEM Carrier Control Transformer 208/230V–24V 40VA for Model PF1MNB070000AAAA

This OEM Carrier transformer (part number HT01CN241) is the factory-specified 40VA step-down transformer for the Carrier PF1MNB070000AAAA fan coil and air handler. It converts your system's 208/230V line voltage down to the 24V AC that powers the entire low-voltage control circuit — including the thermostat, control board, zone valves, and relay coils. When this transformer fails, the result is total loss of control voltage: a blank thermostat, an unresponsive board, and a system that will not heat or cool regardless of any other component condition.

• Specs: 208/230V Primary | 24V Secondary | 40VA rated output | Direct OEM replacement for Carrier HT01CN241 | Factory-matched footprint and terminal configuration
• OEM vs Generic: OEM transformers are wound to exact Carrier specifications with proper VA headroom and insulation class. Undersized or off-spec generic units can overheat, blow fuses, or damage downstream control boards — costing far more than the transformer itself.
• Install difficulty: 2/5 — Shut off all power at the breaker before touching any terminals. Tools needed: flathead and Phillips screwdrivers, multimeter (to verify 24V output after install), wire stripper. Photograph existing wiring before disconnecting. Always verify fuse integrity in the control circuit before condemning the transformer.
• Warranty: 1-year OEM manufacturer warranty. In-stock units ship same business day from our warehouse.

Compatibility: Designed as the direct OEM replacement for the Carrier PF1MNB070000AAAA fan coil unit. Verify your unit's data plate confirms 208/230V primary input before ordering. Cross-references with ICP, Heil, Tempstar, and Comfortmaker systems sharing the HT01CN241 specification. Questions about fitment? Our HVAC parts team verifies compatibility before you order — call or chat today.