The instrument cannot be powered ON when starting the rotating function
Check if the power cable is connected.
Rotating function is not working
If the power/overload protection light is red, and LCD displays “Er 03”, it means that the overload protection system is on.
1. Press the speed/timer control knob first to close the rotating function.
2. Restart the rotating function after the load is lowered.
3. If the rotating function cannot start, repeat the steps above and gradually reduce the load.