Daikin Air Conditioner Error Code CC

The CC error code on a Daikin FCQ series air conditioner indicates a humidity sensor system abnormality. The indoor unit PCB has detected that the humidity sensor is either disconnected or has a short circuit. This code is exclusive to FCQ series units. Importantly, the system continues to operate while this fault is active, so cooling or heating function is not immediately lost.

Yes, the Daikin FCQ unit is designed to continue operating when the CC code is active. The system does not shut down due to this fault. However, any humidity-based control functions that rely on sensor input may not operate correctly until the sensor issue is resolved, so the fault should still be addressed in a timely manner.

A simple power reset may temporarily clear the CC code from the display, but if the underlying issue with the humidity sensor or its connection is still present, the fault will return during operation. A lasting resolution requires physically inspecting and correcting the sensor connection, or replacing the faulty component.

The first recommended step is to access the indoor unit, carefully remove the humidity sensor from its connector on the PCB, and reinsert it firmly. If the sensor was simply loose, this reseating process may clear the fault. If the error persists after reseating, further diagnosis involving sensor testing or component replacement is best handled by a qualified technician.

If the fault is caused by a loose connector, the repair cost is primarily the technician's diagnostic and labor fee, typically in the range of $75 to $150 depending on your location. If the humidity sensor itself needs replacement, parts and labor combined generally range from $150 to $350. PCB replacement, if required, would be a more significant expense.