1

System does not work

（No vibration on sensor surface）

1.No power supply

2.Wrong cable connection

3.Sensor poor contact

4.Main sensor is defective

1.Testing Power Supply Normal or not with Multimeter

2.Check the cable connection

3.Re-contact the sensor

4.Replace the main sensor

2

Radar yowling

1.Abnormal power supply

2.Radar Close to Obstacles

3.False alarm

4.Wrong sensor installation

5.Sensor defective

1.Check power supply voltage with multimeter and supply power correctly

2.Clean the obstacles around

3.Restart

4.Installation the sensors in right direction

5.Check out which one is defective

3

Sensor response is slow

1.Abnormal power supply

2.Sensor mismatch

3.Foreigh matter on surface of sensor

1.Check power supply voltage with multimeter and supply power correctly

2.Check sensor response speed one by one

3.Clean the surface of the sensor

4

System does not alarm

1.Abnormal power supply

2.The switch of buzzer of display do not   turn on

3.Buzzer cable broken

4.Buzzer defective

1.Check power supply voltage with multimeter and supply power correctly

2.Turn on the switch

3.Connect the cable

4.Replace the buzzer

5

System false alarm

1.Abnormal power supply

2.Around obstacles are detected

3.Wrong sensor installation

4.Sensor installation position is low

5.Sensor was squeezed

1.Check power supply voltage with multimeter   and supply power correctly

2.Check surrounding environment and clean   the sensor surface

3.Install the sensor correctly

4.Install the sensor in right height.

5.Check the installation position

6

Display abnormality

1.No display

2.No whole display

3.Wrong display

1.Re-connect

2.Check and confirm by replacement

3.Check the instructions to confirm whether the model matches the controller and use the replacement method to confirm