Display shows C5; unit may not start or may behave erratically.

This repair may involve working with high voltage components or water connections. Always unplug the appliance before removing any panels.

If you are not confident in your ability to perform this repair safely, we strongly recommend contacting a professional technician.

Possible Causes

Incorrect jumper settings on indoor PCB, Missing configuration plug, Wrong PCB installed for the model, Faulty detection circuit on PCB

Safety first: Disconnect power before opening the indoor unit.

Step 1 – Check configuration jumpers: On some Gree PCBs, small jumpers or DIP switches set capacity or model type. Verify they match the original settings (refer to service label or manual).
Step 2 – Confirm correct PCB: Ensure the replacement PCB (if recently changed) matches the exact model number of the indoor unit.
Step 3 – Technician assistance: If you are unsure of the correct configuration, contact a Gree service center. Incorrect settings can damage the system.

Hard 4/5

Indoor Main PCB

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