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The HT01CN241 is the OEM factory-specified control transformer for the Carrier PF1MNB024010AAAA air handler. This transformer steps down 120V line voltage to the 24V AC signal that powers the thermostat, control board, and every low-voltage relay in your system. When it fails, the result is total control-circuit loss — the thermostat goes dark, the system does not respond to any call for heating or cooling, and no safety outputs can be energized. Replacing this transformer with the correct OEM unit is the fastest path back to full system operation.
Compatibility: Engineered specifically for the Carrier PF1MNB024010AAAA air handler. Always verify input voltage, output voltage, and VA rating on your unit's data plate before ordering. Need fitment confirmation? Our HVAC parts specialists verify compatibility before you buy — contact us anytime.