OEM Carrier 24V Control Transformer HT01CN241 for Model PF1MNB048000AAAA

This OEM control transformer (part number HT01CN241) is the factory-specified replacement for the Carrier PF1MNB048000AAAA air handler. The transformer steps down 120V line voltage to the 24V signal needed to power the entire low-voltage control circuit — including the thermostat, contactor coil, and control board. When this transformer fails, nothing in the system responds: the thermostat goes blank, the system won't call for heating or cooling, and the unit sits completely dead despite line power being present.

• Specs: 120V primary → 24V secondary | 40VA rated | Factory-matched OEM replacement | Compatible with standard Class 2 control wiring
• OEM vs Generic: This is the factory OEM unit built to Carrier's exact VA and voltage tolerance specifications. Generic transformers may run undervoltage under load, causing erratic contactor chatter and nuisance board lockouts that are difficult to diagnose.
• Install Difficulty: 2/5 — Shut off all power (line and control) before beginning. Tools needed: flathead and Phillips screwdrivers, multimeter, wire nuts or spade connectors. Confirm 24V output post-install with a multimeter before reconnecting the thermostat. Photograph all wiring before disconnecting.
• Warranty: 1-year OEM factory warranty. In stock and ships same business day from our warehouse.

Compatibility: Fits Carrier model PF1MNB048000AAAA air handler. Verify primary voltage (120V) and VA rating on your unit's data plate before ordering. Not sure it fits? Our HVAC parts specialists verify fitment before you buy — contact us before placing your order.