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R&D ā USER MANUAL DT0430-E04
3.2.2. UPS IN FAULT CONDITIONS
If the UPS experiences the fault, the normal status message will be replaced with the alarm one.
An alarm message will differ depending on the type of fault which occurred. Activated sound signal can be
switched off by pressing the ESC key. The ENTER (< >) key can be used to display the list of indications
which let the operator to understand the meaning of the alarm. The <BACK or NEXT> keys can be used to
scroll through all the active alarms. When the alarm cause disappears, the LCD will return to the default
message.
The possible alarms and associated with them help messages are listed below.
ALARM MESSAGE MEANING
INVERTER OFF The load is no longer supplied by the inverter and
subject to any mains failures
INVERTER OVERLOAD The inverter is off due to an overload and the load
is supplied by the reserve network
STATIC SWITCH LOCKED After 3 unsuccessful automatic switching attempts from
the reserve to inverter, the UPS blocks the static switch
in the reserve network position
BATTERY FAILURE
BATTERY TEST FAILURE Displayed whenever the periodic test on the battery
fails for any reason
BATTERY PREALARM At the battery voltage of around 640V the UPS warns
the user of a low battery voltage
At 600V discharging ends and the UPS goes off
STATIC SWITCH FAILURE At least one of output phases is missing
MANUAL BY-PASS ON The manual bypass switch has been closed
MAINS NOT AVAILABLE The mains is not proper for the UPS specifications,
it might be out of the range allowed by the system, or
simply not present
UPS ALARM
ALARM CAUSE
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