Issue

Expansion units constantly reboot.

Action

1. Check the power supply for failure or faulty power bricks.
2. As a precaution, replace the power brick.
3. Check that the cable between the control unit and the resetting module.
4. Change the module with another module or plug the TDM cable in to another spare slot.

Procedure

1. View error messages by clicking Alarms and then the link.

The total number of times that system has lost contact with the module is displayed in the Occurrences column.