Emerson 250-400kVA - Manual (Page 68)

UPS Alarm and Status Messages
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Service Code
Active
This event is for informational purposes, and
informs the user that Service Code is currently
running.
This status message is self-clearing. When the
condition is no longer present, the alarm and any
control activity tied to the alarm reverts to normal.
Under normal circumstances, none.
If this message is active, and Service Code is not
loaded, contact your factory-authorized service
provider.
Temp Sense Fail
An equipment temperature sensor is reporting an
invalid temperature. The controls ignore
temperatures from a failed sensor.
Press “SILENCE” to silence the audible alarm.
Press “RESET” to clear the alarm.
If the alarm cannot be reset, or if the alarm condition
returns, contact your factory-authorized service
provider.
Xfer to Byp Failed
An event (such as an Inverter fault) caused an
attempted automatic transfer to bypass and the
transfer failed.
The controls detect the Static Bypass Switch
(BPSS) failed to assume the load and the Inverter
was off.
Press “SILENCE” to silence the audible alarm.
Check the Event Log by pressing “Status Reports,”
“Event Log” to investigate why the UPS tried to
transfer to bypass and why the BPSS failed.
If CB3 is available (as displayed on the One-Line
Display), close CB3 to restore power to the load.
Press “RESET” to attempt to clear any latched
alarms or faults.
If conditions appear normal, attempt to restart the
UPS by pressing “Startup,” “Manual Start” and
follow the prompts.
Contact your factory-authorized service provider.
Table 7 Liebert NXL alarm and status messages (continued)
Event Message Event Definition Recommended Action