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This OEM replacement transformer (part number HT01CN241) is the factory-specified step-down transformer for the Carrier FZ4ANP061L00AAAA air handler. The transformer converts 120V line voltage to 24V AC to power the entire low-voltage control circuit — including the thermostat, control board, and relay coils. When the transformer fails, the result is a completely unresponsive system: no thermostat display, no contactor pull-in, and no heating or cooling operation whatsoever. A shorted transformer will often blow the control fuse as well, so always inspect and replace the fuse when servicing this part.
Compatibility: Designed as a direct OEM replacement for the Carrier FZ4ANP061L00AAAA air handler. Always verify primary voltage (120V) and VA rating on your unit's data plate before ordering. Need help confirming fitment? Our HVAC parts specialists are available to verify compatibility before you buy — order with confidence and get back up and running today.