Error Code: FH CC – Refrigerant Sensor Error

Error Code: FH CC – Refrigerant Sensor Error
Applies to LETO and AURA Series

What this means:
The indoor unit has either received a fault signal from the refrigerant sensor for 10 seconds or didn’t receive any feedback at all for 150 seconds. This usually means the sensor is disconnected, damaged, or out of its normal range.

Try this first (easy fix):

1. Turn off power to your mini split completely.

2. Wait 2 full minutes.

3. Turn the power back on and check the display.

• If the error clears — you’re good to go.

• If the error is still there — move to the next steps.

Next steps (for technicians):

• Check the wiring between the refrigerant sensor and the indoor PCB.

• Make sure all connections are secure and properly seated.

• If the wiring is good:

  • Replace the refrigerant sensor.

  • If the error still exists after that, replace the indoor PCB.

What you might need:

• Refrigerant sensor

• Indoor main PCB

• Connection wires

Helpful tip:
This sensor helps detect refrigerant conditions inside the system. Faults may occur from corrosion, vibration damage, or pinched wires during installation.

Click here to view the detailed guide.TS05-N10