Complaint
| Fault phenomenon | Possible cause | Overhaul method |
| Do not work after turning on the power supply, no indication of work indicator | 1.The power supply is not on or in bad contact 2.The circuit breaker in the control box is not closed 3.Fuse damage of controller | 1. Connect the power supply, deal with the bad part 2. Close the circuit breaker 3. Find the cause, replace the mental fuse. |
| No automatic operation | 1.The automatic working switch is not on or out of order 2.Sensor lines or not well connected. Sensor adjusting 3.distance is too close | 1.Overhaul or replace automatic switch 2. Reconnect line 3. according to wiring diagram. Readjusting the effective distance of the sensor |
