50
DPA 2 50 S 4 50 - 2 50 K W
O P ER AT I N G M A N UA L
7.3.3
Fault identification and rectification
The major alarm conditions that will be encountered are:
ALARM CONDITION
MEANING
SUGGESTED SOLUTION
MAINS RECT. FAULT
Mains power supply is outside prescribed
tolerance.
The input power to UPS is too low or
missing.
If site power appears to be OK, check the
input circuit breakers etc. supplying the
UPS.
MAINS BYP FAULT
Mains power supply is outside prescribed
tolerance.
The input power to UPS is too low or
missing.
If site power appears to be OK, check the
input circuit breakers etc. supplying the
UPS.
OUTPUT SHORT
There is a short circuit at the output of
UPS (on load side).
Check all output connections and repair
as required
OVERLOAD
Load exceeds the UPS rated power.
Identify which piece of equipment is
causing the overload and remove it from
the UPS.
Do not connect laser printers,
photocopiers, electric heaters, kettles
etc. to the UPS.
TEMPERATURE HIGH
UPS temperature has exceeded the
allowed value.
Check that the ambient temperature of the
UPS is less than 40° C.
If the ambient temperature is normal call
the certified service center for assistance.
INV. PHASE FAULT
Inverter is faulty.
Call the certified service center for
assistance.
SYNCHRON. FAULT
The inverter and mains are not
synchronized.
The frequency of the input voltage to the
UPS is outside operational limits and the
UPS static bypass has been temporarily
disabled.
BATTERY IN DISCHARGE
Battery is near end of autonomy.
Shutdown load connected to UPS before
the UPS switches itself off to protect its
batteries.
MANUAL BYP IS CLOSED
Maintenance Bypass closed. Load
supplied by mains.
This alarm is only displayed if the UPS is on
Maintenance Bypass.
In the case of alarms not included in the list above, please contact the nearest certified service center
for assistance.
