Technoware EVO DSP PLUS TT 100 KVA, User Manual

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User’s manual 62 UPS EVO DSP PLUS TT
10 Troubleshooting
This section gives information about the procedures which shall be performed in case of abnormal operation.
If you fail to fix the problem consult authorized Technical Service with the following information:
 Model and serial number of the UPS, which can be found on the nameplate on the rear of the UPS.

Description of abnormal operation and Fault code displayed on graphic LCD.
If you have noticed an abnormality in operation; check the Protective Ground/Earth connections, examine the
circuit breakers positions, read alarms messages from the graphic LCD and refer to the table below. Apply all
suggestions corresponding to each anomaly.
If your issue is excluded or the suggested actions do not solve your problem, consult the Technical Service.
Risk of electric shock: do not remove the cover. The UPS contains internal parts which
are at a high Voltage and are potentially dangerous, capable of causing injury or death
by electric shock.
There are no internal parts in the UPS which are user serviceable. Any repair or
maintenance work must be performed exclusively by qualified technical personnel
authorized by TECNOWARE.
TECNOWARE declines any responsibility if this warning is disregarded.
LCD Message Explanation Solution
Fault! Bus Over Voltage
DC bus voltage is too high Contact service personnel.
Fault! Bus Under Voltage
DC bus voltage is too low Contact service personnel.
Fault! Bus Voltage Unbalanced
DC bus voltage is not balanced Contact service personnel.
Fault! Bus Short
DC bus is short Contact service personnel.
Fault! Bus Soft Start Time Out
The rectifiers could not start due to low
DC bus voltage within specified duration
Turn off UPS and then restart the UPS.
If it fails again, contact service personnel.
Fault! Inverter Soft Start Time
Out
Inverter voltage cannot reach desired
voltage in specified duration
Turn off UPS and then restart the UPS.
If it fails again, contact service personnel.
Fault! Inverter Voltage Over
Inverter Voltage is over peak value Contact service personnel.
Fault! Inverter Voltage High
Inverter Voltage is too high Contact service personnel.
Fault! Inverter Voltage Low
Inverter Voltage is too Low Contact service personnel.
Fault! R Inverter Voltage Short
R phase inverter output is shorted Contact service personnel.
Fault! S Inverter Voltage Short
S phase inverter output is shorted Contact service personnel.
Fault! T Inverter Voltage Short
T phase inverter output is shorted Contact service personnel.
Fault! RS Inverter Voltage
Short
R-S inverter output is shorted Contact service personnel.
Fault! ST Inverter Voltage
Short
S-T inverter output is shorted Contact service personnel.
Fault! TR Inverter Voltage
Short
T-R inverter output is shorted Contact service personnel.
Fault! Inverter R Negative
Power
R phase inverter output Negative Power
over range
Contact service personnel.