Error Code: FH CC – Refrigerant Sensor Error

Error Code: FH CC – Refrigerant Sensor Error

What this means:
This error occurs when the indoor unit either:

• Receives a fault signal from the refrigerant sensor for 10 seconds, or

• Receives no feedback at all for 150 seconds.

It indicates a sensor fault, disconnection, or wiring issue.

Try this first (quick reset):

1. Turn off power to the system.

2. Wait 2 minutes.

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

• If the error clears — the sensor may have reconnected.

• If the error remains — begin troubleshooting.

Next steps (for technicians):

1. Check the wiring between the refrigerant sensor and indoor PCB:

   • Ensure all wires are securely connected and not damaged.

2. If wiring is OK:

   • Replace the refrigerant sensor.

3. If replacing the sensor doesn’t resolve the issue:

   • Replace the indoor main PCB.

What you might need:

• Connection wires

• Refrigerant sensor

• Indoor main PCB

Helpful tip:
This fault is closely related to EH C3. Always start by checking for proper wiring before replacing hardware.

Click here to view the detailed guide.TS36