The home position is not responding, when leveling is selected, it doesn't first move upward, but directly runs downward to the lowest point and stops.
The issue of limit switch causes the platform to operate downwards, the limit indicator does not light up, the machine defaults to the zero point and only stops after running until it jams.
¶ Troubleshooting and solution
- Check if the limit switch light is on. Normally, the light stays on when not triggered and turns off when triggered.
- Inspect for any poor contacts or circuit breaks in the limit switch ribbon cable and terminals.
- Measure if there is a 5V voltage at the limit switch terminal on the adapter board. If not, the adapter board is faulty.
- Check if the coupler screws are properly tightened.
- Check if the motor is powered up, if the indicator light stays green, and if there is any noise during operation.