Datasheet

Troubleshooting
Symmetra
®
PX 10-80 kW, 208V – Operation & Maintenance Guide – 990-1430 REV01 27
Bypass
If the system works in bypass, ensure the presence of AC mains supply input.
If a problem persists, note UPS model #, serial #, and date purchased before calling Tech Support at:
1 [phone].
Load is No Longer above
Alarm Threshold
The load exceeded the load alarm
threshold and the situation has been
corrected either because the load
decreased or the threshold was
increased.
No corrective action necessary
Min Runtime Restored The system runtime dropped below
the configured minimum and has been
restored. Additional battery modules
were installed, the existing battery
modules were recharged, the load was
reduced, or the threshold was raised.
No corrective action necessary
Display Message Meaning Corrective Action
Display Message Meaning Corrective Action
Bypass is not in range
(either freq or voltage)
The frequency and/or
voltage is out of acceptable range for
bypass. This message occurs when
the Symmetra is online, and indicates
that the bypass mode may not be
available if required.
Option 1: Correct the input voltage to
provide acceptable voltage and/or
frequency.
Option 2: Decrease the sensitivity to
input frequency. (Select Startup,
Setup, OutputFreq, and select a
value).
Backfeed contactor stuck
in OFF position
The Symmetra PX UPS is stuck in the
bypass position and cannot go on-
line.
Contact APC Technical Support. at
(1) [phone].
Backfeed contactor stuck
in ON position
The Symmetra PX UPS is stuck in the
on-line position and cannot go to
bypass.
Contact APC Technical Support. at
(1) [phone].
UPS in bypass due to
internal fault
The Symmetra PX UPS has
transferred to bypass mode because a
fault has occurred
Contact APC Technical Support. at
(1) [phone].
UPS in bypass due to
overload
The load exceeded the system power
capacity. The Symmetra PX UPS has
switched to bypass mode
Option 1: Decrease the load.
Option 2: If possible, add a power
module to the system.
System is in
Maintenance bypass
The Symmetra PX UPS is in bypass
because it has been commanded into
bypass or due to an internal fault.
No corrective action necessary. If
other alarms exist, troubleshoot base
on other alarms.
Fault, Bypass Relay
Malfunction
The bypass relay has malfunctioned. Contact APC Technical Support. at
(1) [phone].