LG · Air Conditioning
This fault code signifies an issue with the discharge pipe sensor on a conventional (non-inverter) compressor. The sensor is either disconnected (open) or short-circuited.
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Turn off the unit's power.
Inspect the discharge pipe sensor's wiring and connection for any signs of damage or disconnection. Ensure it's securely attached.
Carefully unplug and then firmly reconnect the sensor.
If the problem continues, the sensor may be faulty and require replacement by a technician.