- Error: E4
- Description: Error of the indoor heat exchanger outlet temperature sensor.
- Possible Causes: Temperature sensor not properly connected or malfunctioning, damaged main PCB.
- Solution: Check the temperature sensor connection and measure its resistance. If the resistance is too low, the sensor has short-circuited.
The E4 error in Midea air conditioner indicates a problem with the indoor heat exchanger outlet temperature sensor. This can be caused by the sensor not being properly connected or having failed, or by a damaged main PCB.
Steps to Fix E4 Error in Midea Air Conditioner
To resolve this issue, follow the procedure below:
- Turn off the air conditioner and disconnect it from the power source.
- Locate the connection port of the indoor heat exchanger outlet temperature sensor on the main PCB of the indoor unit.
- Check the connection of the temperature sensor to ensure it is properly connected.
- Measure the resistance of the temperature sensor using a multimeter. If the resistance is too low, the sensor has short-circuited and needs to be replaced.
- If the connection and resistance of the temperature sensor are correct, it is possible that the main PCB is damaged and needs to be replaced with a new one.
It is important to note that this procedure should be performed by a trained technician with experience in air conditioner repairs, as working with electrical components can be dangerous without proper knowledge and expertise.
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