1. The mainboard will detect the input signal of SM-02, and it will not operate after connecting the communication line. This is generally caused by the following reasons: 1): The door operator's door opening signal is incorrect. , if the door-opening-in-position signal is activated when the door lock is closed, then the elevator maintenance will not be able to operate; 2): If the overload signal is activated, then the elevator maintenance will not be able to operate.

2. Fault explanation: This is because the cumulative number of faults displayed on the onboard operator is greater than 3 to 5 times, so the fault is locked. This fault code will only appear on the onboard operator, not the handheld operator. On-site troubleshooting: Check the motherboard failure records.

3. The switch is damaged. The overcurrent fault brake of Newstar 91 cannot be opened because the switch is damaged and the switch power cord is in poor contact. Just reconnect it. Newstar Electric Co., Ltd. was founded in 1995. The registered trademark is STEP, which is supported by the state. It is a high-tech enterprise, a national innovative enterprise, and has a nationally recognized enterprise technology center.

4. Open and close the door. The screen goes black when the Newstar elevator door lock is turned on. This is because a characteristic of the Newstar elevator system is that as long as the elevator fails, the screen goes black when the elevator door lock is turned on. It is probably because there is a problem with the door opening and closing position.

5. The elevator rushes past the upper station level. When the Newstar as380 elevator ran upwards to the end station for non-inspection maintenance, the leveling insert plate detached from the lower leveling photoelectric, causing the elevator to rush through the upper end station leveling floor. The main board will record a No. 03 fault, and the elevator can continue to run. If it continues 3 times is the elevator protection.

6. Meter problem. The reason why the Newstar inspection speed cannot be adjusted to 0 is because the stepper motor of the electric meter is faulty. The gear inside is stuck or the pointer and the stepper motor are relatively displaced. Therefore, the mechanical zero position is on the upper side. The electric meter needs to be inspected and restored to the zero position. That’s it.