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Error Code
The E3 error code indicates an indoor temperature sensor malfunction. This error occurs when the system fails to detect or read the temperature correctly, which can lead to inaccurate cooling or heating performance.
The temperature sensor may have malfunctioned or failed completely.
Loose or damaged wiring can prevent the sensor from sending accurate readings.
Dirt or debris buildup on the sensor can cause incorrect readings.
Ensure the sensor is clean and unobstructed by dirt or debris.
Look for any loose or damaged wiring to the sensor.
If the sensor is malfunctioning, it may need to be replaced.
