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10
DURING SHUTDOWN
The following table shows each corresponding warning message on LCD screen and the alarm reacts
during the machine shutdown (output-off):
LCD Warning
Display
Alarm
Condition
Solution
Constant
tone
Overload in line mode.
Turn the UPS off, unplug at least one
piece of equipment from battery
outlets, wait 10 seconds, reset the
circuit breaker and turn the unit on.
Constant
tone
Overload in battery mode.
Turn the UPS off, unplug at least one
piece of equipment from battery
outlets, wait 10 seconds, reset the
circuit breaker and turn the unit on.
(Flashing)
Rapid Beep
(30 seconds)
Battery missing in line
mode.
Turn the UPS off. Check battery
wiring and the presence of the
battery. Press the Display toggle
button to stop the alarm.
Beep twice
every 30
seconds
Utility Failure. The UPS is
in battery mode.
Wait for the recovery of utility or try
other AC power source. Pressing the
Display toggle button for 2 seconds
can enter silent mode.
Rapid Beep
(every 1/2
second)
Utility Failure. The UPS is
in battery mode and will
run out of power shortly.
Recharge the battery.
AFTER SHUTDOWN
The following table shows the information about the error codes on LCD screen after the machine
shutdown (output-off). The LCD will show the message till the UPS runs out of battery.
ERROR TYPE
ERROR CODE
POSSIBLE CAUSE
Line Mode Error
E01
Battery Overcharge
Charger broke down
System Error
E21
Output Short
UPS/connected devices short circuit
Output voltage detector broke down
Inverter fault
E22
Output Overload
Too many connected devices
The Error code appears with Fault icon and a constant tone. Slightly press the Display toggle button once,
the constant beep will be cancelled. To solve the problems, please refer to TROUBLESHOOTING section or
contact W Box Technical Support (US/Canada/PR) 1-833-574-9124 for further help and support.
FAULT WARNING DISPLAY AND ALARM