OEM Carrier Control Transformer 208/230V–24V 40VA for Model PF1MNB036000AAAA

The Carrier HT01CN241 is the factory OEM control transformer for the PF1MNB036000AAAA air handler. Its job is critical and straightforward: step down 208/230V line voltage to the 24V AC that powers every component on your control circuit — thermostat signals, relay coils, zone valves, and the system board itself. When this transformer fails, the result is total control-circuit collapse: the thermostat goes blank, no relay clicks, and the system is completely unresponsive. A failed transformer is often misdiagnosed as a bad control board, making a quick resistance and voltage check an essential first step before replacing more expensive components.

• Specs: 208/230V Primary | 24V Secondary | 40VA rated | OEM part number HT01CN241 | Factory-matched Carrier specification
• OEM vs Generic: OEM transformers are wound and insulated to exact Carrier tolerances, providing stable 24V output under full VA load. Generic units often drift under load, causing intermittent lockouts, nuisance tripping of secondary fuses, and shortened board life.
• Install difficulty: 2/5 — Shut off all power at the disconnect and breaker before starting. Tools needed: flathead and Phillips screwdrivers, wire stripper, multimeter. Label or photograph all low-voltage wiring before disconnecting. Confirm fuse integrity on the secondary circuit after installation.
• Warranty: 1-year OEM manufacturer warranty included. In-stock units ship same business day from our warehouse when ordered by cutoff.

Compatibility: Direct OEM replacement for Carrier model PF1MNB036000AAAA air handler. Also fits other Carrier, Bryant, and ICP-family equipment specifying the HT01CN241 transformer with a 208/230V primary and 24V/40VA secondary — always verify against your unit's wiring diagram and data plate before ordering. Have a fitment question? Our HVAC parts team verifies compatibility before you buy — reach out before placing your order.