Hello Bart V,

You may try zero clearing。

1.Please move the red cursor to “NCP”,

2. Keep pressing up button for 3 seconds. After that, there will be 3 options.

3. Make the red cursor pointing to C-I, and press “OK” button. Then you will see “I=0”, at this time, please press up or down button to reset. （Please notice when in the reset process, it can’t be connected with any load）

4. Press “OK” button again, you will see “I>0”(connect a 3A load). Then press up or down button to make the current value is in accord with 3A load. Press “Ok” button to save settings.

Best regards。