45
TROUBLESHOOTING
Only authorised persons can repair the device.
In the event of a failure or persistent problems the unit should be shut down.
Control the unit as follows. Be prepared to answer these questions before calling for technical assistance:
1.
First, take note of the AXX error code which will be displayed on the second line of the LCD panel
2.
Has the installation procedure been completed? Did the failure or problem occur during installation?
3.
Was there a blackout just after or before the STS malfunctioned?
4.
What is the status of indicators? (see alarms and alarm codes)
5.
Check the registered events and their date and time
6.
Have there been any recent changes to critical applications connected to the STS?
7.
Is the device in overload status? Remove the load from the device and re-start it.
8.
Check the two power sources, their voltages and synchronisation at entry to the STS
9.
Have the connections been made in the correct phase rotation?
10.
If the load is not powered and there is no indication of STS failure, check the distribution of the load, circuit
breakers, switches and cabling.
11.
If the STS displays a temperature alarm, check the ventilation grills and outlets of the STS.
Summary of Contents for STS 1000A 3 Pole
Page 1: ...Static Transfer Switch 100 150 200 250 300 400 600 800 1000 A 3 POLE 4 POLE User Manual...
Page 6: ......
Page 46: ...46...
Page 47: ...47 AGKK7306 10 2020...
