OEM Carrier 40VA Control Transformer 208/230V–24V for Model PF4MNB061L00ACAA

This OEM control transformer (part number HT01CN241) is the factory-specified replacement for the Carrier PF4MNB061L00ACAA fan coil and air handler unit. The transformer steps down the 208/230V line voltage to the 24V used by thermostats, control boards, contactors, and all low-voltage safety circuits. When it fails, the entire control circuit goes dead — the thermostat loses power, the system refuses to respond to any call for heating or cooling, and you may find a blown fuse on the control board. A failed transformer is one of the first things any technician checks when a system shows zero response.

• Specs: 208/230V primary input | 24V secondary output | 40VA rated | OEM part number HT01CN241 | Factory-matched to Carrier tolerances
• OEM vs Generic: This is a genuine Carrier OEM transformer built to exact factory specifications. Generic transformers may carry different VA ratings or inferior core materials, risking repeated fuse failures or nuisance control trips under peak load.
• Install difficulty: 2/5 — Disconnect power at the breaker before beginning. Tools needed: flathead and Phillips screwdrivers, needle-nose pliers, multimeter (verify 0V before touching terminals). Label all low-voltage wires before disconnecting. Transformer typically mounts inside the air handler cabinet on a bracket or foot mount.
• Warranty: 1-year OEM manufacturer warranty. In-stock orders ship the same business day from our warehouse.

Compatibility: Direct OEM replacement for Carrier model PF4MNB061L00ACAA. Always verify the part number on your existing transformer's label before ordering — confirm 208/230V primary and 24V/40VA secondary ratings match your unit's data plate. Have questions about fitment? Our HVAC parts specialists verify compatibility before you order — contact us today and get your system back up fast.