04-3598_ABB_PVA11_T_1-3kVA_EN_REV-B.doc
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If the UPS system does not operate correctly, please attempt to solve the problem using Table 10.
Problem
Possible cause
Suggested solution
No indication, no warning
tone even though system is
connected to mains power
supply
No input voltage
Check building wiring socket outlet and input cable.
Display Mode code ”1” in
LCD, even though the power
supply is available
Inverter not switched on
Press On-
Switch “I”.
Display Mode code ”3” in
LCD, and audible alarm
sounding every 1 beep in
every 4 seconds
Mains power supply has
failed, or Input power
and/or frequency are out
of tolerance
Switching to battery mode automatically.
Check input power source and inform dealer if
necessary.
Emergency supply period
shorter than nominal value
Batteries not fully
charged / batteries defect
Charge the batteries for at least
5 - 8 hours and then check capacity. If the problem still
persists, consult your dealer.
Fan fail
Fan abnormal
Check if the fan is running
Battery over voltage
Battery is over charged
Switching to battery mode automatically, and after the
battery voltage is normal and the mains is normal, the
UPS would Switching to online mode automatically
again.
Battery low
Battery voltage is low
When audible alarm sounding every second, battery is
almost empty.
Charge fail
The charge is broken
Notify dealer.
DC-DC temperature high
Inside temperature of the
UPS is too high
Check the ventilation of the UPS, check the ambient
temperature.
Inverter temperature high
Inside temperature of the
UPS is too high
Check the ventilation of the UPS, check the ambient
temperature.
Ambient temperature high
The ambient temperature
is too high
Check the environment ventilation.
Line voltage high (OVCD
action)
Input power voltage is too
high
Switching to battery mode automatically, and after the
mains is normal, the UPS would Switching to online
mode automatically again.
Battery open
Battery pack is not
connected correctly
Do the battery test to confirm.
Check the battery bank is connected to the UPS.
Check the battery breaker is turn on.
Overload
Overload
Check the loads and remove some non-critical loads.
Check whether some loads are failed.
Site fail
Phase and neutral
conductor at input of UPS
system are reversed
Rotate mains power socket by 180° or connect UPS
system.
EPO active
EPO function is enabled
Plug into the EPO switch.
Bus fault
UPS internal fault
Notify dealer
Inverter fault
UPS internal fault
Notify dealer
Over temperature fault
Over temperature
Check the ventilation of the UPS, check the ambient
temperature and ventilation.
Inverter short
Output short circuit
Remove all the loads. Turn off the UPS. Check
whether the output of UPS and loads is short circuit.
Make sure the short circuit is removed, and the UPS
has no internal faults before turning on again.
Bus short
UPS internal fault
Notify dealer
Table 10: Troubleshooting table
