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Daikin C4 Error Code

Failure of the liquid pipe thermistor for the heat exchanger.

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Causes & Recommended Solutions

If you see the C4 error code, it means there is a malfunction of the liquid pipe thermistor for the heat exchanger. This component monitors the temperature of the refrigerant, and a malfunction can affect your system’s efficiency.

Common Causes of the C4 Error Code

Faulty Liquid Pipe Thermistor

Wiring Issues

Sensor Malfunction

Recommended Solutions

Inspect the Thermistor for Faults

Check Wiring Connections

Ensure Proper Refrigerant Flow

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