HP PowerTrust A3589A, Manual

Page: 134 / 257

6-18 Chapter 6
Troubleshooting
UPS Halted (Has No AC Output)
UPS Halted (Has No AC Output)
Case 9 (Abnormal) — Failure Shutdown
Indicators:
AC Output
not lit
Battery Power
not lit
Attention
lit
Caution LED may or may not flash periodically
Enable lit
Audible Alarm: may or may not beep periodically
Meaning: The UPS has failed, and its output has been shut down.
Cause: The UPS fault monitoring circuits have detected a fatal internal UPS fault
that caused the UPS output to shut down.
Action: 1. Call HP Service.
2. At this point, it may be possible to restore the operation of the
equipment powered by the UPS (but without UPS power fail protection)
by placing the UPS in Service Bypass mode until an HP Service person
arrives. (See “Placing the UPS in Service Bypass Mode” in Chapter 4.)
Case 10 (Normal or Abnormal) — Overload or EPO Shutdown
Indicators: •
AC Output
not lit
•
Battery Power
not lit
•
Attention
lit
• Caution LED flashing
• Enable lit
• Audible Alarm: 1 beep every 10 seconds
Meaning: The UPS has shut down its output due to EPO activation or because of an
overload condition — the loads attached to the UPS output require more
power than the UPS can continuously support; alternatively, an internal
short-circuit or failed component may exist at the output circuits of the
UPS.
Cause: Normal causes of this case are:
• The EPO has been activated or is not properly wired.