The possible reasons for the automatic call of the wired five-party intercom in the elevator

1. The accompanying cable is short-circuited or electrified

2. Failure of the main unit or sub-unit

3. Due to the different distances from each elevator to the monitoring room, the signals generated by different line lengths caused false triggering of the main unit

Solution

Use a multimeter to measure whether the traveling cable of the car under the extension is electrified or short-circuited.

2. Test with a normal extension. If the problem is solved, it is determined that this extension is faulty.

Possible reasons for the automatic call of the wireless five-party intercom in the elevator:

1. The accompanying cable is short-circuited or electrified

2. Failure of the main unit or sub-unit

3. The signal was interfered with or the host and nearby devices were on the same frequency, resulting in false contact

Solution

1. Use a multimeter to measure whether the traveling cable of the car under the extension unit is electrified or short-circuited, just like for wired equipment.

2. Replace the main unit and the extension unit for testing to see if there is a problem with the equipment.

3. When the channel of the main unit is changed, re-code it, and the antenna of the extension unit is repositioned.