Troubleshooting; Fault Identification And Rectification; Troubleshooting Without An Error Message; Troubleshooting Based On Error Message - ABB PowerValue 31/11 T 10 kVA User Manual

7 TROUBLESHOOTING

7.1

Fault identification and rectification

Alarm and events identify warning situations and notify errors or potential failures of the system. The
output of the UPS is not necessarily affected in case of an alarm but taking the correct actions may
prevent loss of power to the load. If the UPS system does not operate correctly, attempt to solve the
problem using the table below.
7.1.1

Troubleshooting without an error message

Message displayed
No indication, no warning tone
even though system is connected
to mains power supply
Bypass LED ON even if the power
supply is available
Battery LED ON and audible
alarm sounding
Emergency supply period shorter
than nominal value
7.1.2

Troubleshooting based on error message

Message displayed
Inv Overload Failure
Alarm code:42
Byp Overload Failure
Alarm code:43
Output short-circuit
Alarm code:31
Heat sink Over Temperature Fault
Alarm code:81
DC BUS over-voltage
Alarm code:21
DC BUS under-voltage
Alarm code:22
DC BUS unbalanced
Alarm code:23
DC BUS short circuited
Alarm code:24
DC BUS softstart failure
Alarm code:25
INV over-voltage
Alarm code:32
Possible cause
No input voltage
Inverter not switched on
Input voltage and/or
frequency out of
tolerance
Batteries not fully
charged / batteries defect
Possible cause
Overload
Overload
Short circuited output
Inside temperature of
UPS is too high
UPS internal fault
UPS internal fault
UPS internal fault
UPS internal fault
UPS internal fault
UPS internal fault
4NWP100559R0001_OPM_ABB_PVA31-11-T_10-20kVA_EN_140626
Modifications reserved
Remedy
Check the building wiring and input cable.
Check if the input breaker is closed.
Press power-on button to turn on UPS.
Check input power source.
Check the building wiring and input cable.
Check if the input breaker is closed.
Charge the batteries for at least 12 hours and then check
capacity.
Remedy
Check the loads and remove non-critical loads.
Check if some loads have failures.
Check the loads and remove non-critical loads.
Check if some loads have failures.
Remove all the loads. Turn off the UPS.
Check if UPS output and loads are short-circuited.
Ensure short circuit is removed before turning on the
system again.
Ensure the UPS is not overloaded, the air vents are not
blocked and the ambient temperature is not too high. Wait
for 10 minutes for the UPS to cool down before turning it on
again. If failed, contact the service center.
Contact UPS supplier.
Contact UPS supplier.
Contact UPS supplier.
Contact UPS supplier.
Contact UPS supplier.
Contact UPS supplier.
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