17
FAULT STATUS:
In some cases controller checks events but can not find solutions, in this case controller decide to stop the
system. For restarting the user must turn off the ON/OFF switch and turn it on again.
WARNING STATUS:
Some events recorded to log event file stays on LCD PANEL but UPS continues to work, these
messages named as warning messages, user can clear this messages by pressing ENTER key for 3
seconds.
These are:
• A20 Boost charge alert
• A6 Charge fault
• A18 Batt capacity low
3.4 Shutdown messages:
PDSP series UPS can operate interactive with the operating system. You can send commands to UPS from
operating system by using some software .UPS takes these commands and produces some messages listed
below:
WAITING SHUTDOWN : Shutdown command is performed by the operating system and UPS is waiting for
a certain delay for shutdown.
UPS SHUTDOWN : UPS is in shutdown status
WAITING RESTART : UPS is shutdown but it is waiting for a certain delay for restart
PAR.SHUTDOWN : In parallel systems the other UPS sends shutdown command and UPS is in
shutdown status.
CANCEL SHUTDOWN : Shutdown command is cancelled.
Only operating system or a PC computer can send these commands.
If the shutdown command is performed during line failure UPS shutdowns and if the mains is okay UPS starts
again automatically.
3.5 Fault Messages and Quick Troubleshooting :
All alarms contained in PDSP UPS control software are listed in the following table.
ALARM DESCRIPTION
A1 BYPASS FAILURE
Bypass system failure
Possible Causes:
Bypass components may be faulty, call service.
A2 INVERTER FAILURE
Inverter digital start system is failed
Possible Causes:
Internal failure. Call service.
A3 3 OVERTEMP
Overtemperature in UPS repeated 3 times in the last 30 mins.
Possible Causes:
1) Check for UPS air inlets and outlets for any blocking by dust etc.
2) Fan failure
3) Bad UPS location
4) Check for Overload
A4 OUT FAILURE
UPS output voltage is out of tolerance for 3 times in the last 30 mins.
Internal failure. Call service.
A5 BATT AUT END
Batteries are completely discharged; wait for restoration of electric power
input. This message occurs only at the end of a battery operation during line
failure.
A6 CHARGER FAULT
Rectifier could not produce DC bus voltage.
A7 BATTERY LOW
Battery voltage is low. (either positive or negative)
Possible Causes:
1) UPS operation for long time when line out
2) Charger system failure
A8 OUTPUT HIGH
Inverter output voltage is higher than the max. tolerated value.
Inverter is stopped.
Possible Causes:
1) Inverter failure
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