Pentium rice cooker displays code E4, indicating that the temperature reading control has failed for the following two reasons:

1. The temperature sensor of the upper cover of Pentium rice cooker is out of order;

2. The lead of the upper cover of Pentium rice cooker is broken.

The solution is:

1, replace the upper cover sensor again;

2. Replace the line connection sensor.

Please go to a professional maintenance point for maintenance.