Once powered, the LCD will light up. There are two touch-sensitive buttons on the face: and Set (►) . Some models use inductive touch; use your fingertip—no need to press hard.
| Problem | Likely Cause | Solution | | :--- | :--- | :--- | | | Meter power not connected or voltage <6.5V | Check voltage at terminals 1 & 2. | | Voltage reads zero | V+ and V- not connected | Check wires to terminals 3 & 4. | | Current reads zero | Shunt bypassed or sense wires loose | Ensure ALL load current goes through shunt. Tighten small screws on shunt. | | Current reads too high/low | Wrong shunt or wrong shunt wiring | Verify it’s the 100A/75mV shunt. S+ to terminal 5, S- to terminal 6. | | Negative current reading | Shunt orientation reversed | Swap the two large cable connections on the shunt bolts. |
: Long press the key until "CLr" appears in the power display area, then release.
: If no action is taken for 5 seconds, the meter exits the reset mode without clearing the value. Voltage Alarm Threshold :
: The energy value will flash. Short press again to clear the energy value to zero.
This article serves as your complete, standalone manual. We will cover everything from unboxing and wiring to advanced troubleshooting and programming the device for precise DC energy monitoring.