Answer: It means in that the auto-home circle there is something wrong.
First: Please check the sensor position if it’s in the right position and toolhead slot can enter the sensor signal without any blockage.
After following this steps if you still have the same issue then move on to second case.
Second: Please observe- when you toolhead returning home and hit the motor does your Sensor Red light lighten up or not. If it’s lighten up then it means the sensor is passing the signal, sensor working condition is alright. If in your case does the same more on the next case
Third: If you sensor light lighten still the auto-home is not normal then your wire might be damaged. Please contact our Support team for further support. Or visit our Shop to get replacement parts.