Error Code: PC 06 – Discharge Temperature Protection of Compressor

Error Code: PC 06 – Discharge Temperature Protection of Compressor

What this means:
The compressor discharge temperature has exceeded the safe limit — 115°C for R410A systems or 108°C for R32 systems — for more than 9 seconds. To prevent compressor damage, the system shuts down and displays this error.

Try this first (quick reset):

1. Turn off the unit completely.

2. Wait 2 full minutes.

3. Turn it back on and check the display.

• If the error clears — the issue may have been temporary.

• If the error returns — follow the steps below.

Next steps (for technicians):

1. Check wiring connection of the discharge sensor:

   • Confirm the temperature sensor is connected correctly to the PCB based on the wiring diagram.

   • If the connection is faulty → correct the wiring.

2. Measure discharge temperature:

   • If the temperature is above threshold (115°C R410A / 108°C R32) → continue diagnosis.

3. Check for refrigerant leakage:

   • If refrigerant is leaking → repair the leak and recharge the system.

   • If the high-pressure valve assembly is faulty → replace it.

4. Test sensor resistance:

   • If the resistance value is abnormal → replace the discharge temperature sensor.

   • If sensor resistance is normal and error persists → replace the outdoor main PCB.

What you might need:

• Discharge temperature sensor

• Outdoor main PCB

• Additional refrigerant

• High-pressure valve assembly

• Connection wires

Helpful tip:
Some systems use a combination sensor where TP (discharge), T3, and T4 are housed together. Always confirm your model’s sensor type before replacing. Overheating is often tied to refrigerant issues or blocked airflow.

Click here to view the detailed guide.TS32