What situations need to replace the Hall Sensor

①    The branch shows a negative current. The negative current is greater than 2A, but when the ruler gauge has no negative current, it needs to be replaced;

②    No current is displayed on the branch circuit. The current meter measures the current and is greater than 1A, which needs to be replaced；

③    The host interface Hall number display is incorrect, for example, the following figure:

If 6 halls are connected on site, the above figure shows that 24 is correct. If it shows 0, you need to determine which hall is faulty before replacing