Dell 1000W User Manual page 72

Table 16. Typical Alarms and Conditions (continued)
Alarm or Condition
Input AC Over Voltage
(Alarm 6)
Intermittent Alarm
Input AC Under Voltage
(Alarm 7)
Intermittent Alarm
Input Under/Over Frequency
(Alarm 8)
Intermittent Alarm
Site Wiring Problem
(Alarm 194)
Continuous Alarm
Remote Emergency Power
Off
(Alarm 12)
Continuous Alarm
Output Overload
(Alarm 25)
Continuous Alarm
Output Overload Level 2
(Alarm 159)
Continuous Alarm
Output Overload Level 3
(Alarm 162)
Continuous Alarm
Battery DC Over Voltage
(Alarm 68)
Continuous Alarm
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Troubleshooting
Possible Cause
Utility voltage exceeds the
maximum operating range.
Utility voltage is below the
minimum operating range.
The utility frequency is out of
usable frequency range.
An alarm triggers when the
difference between ground and
neutral voltage is >15V.
The external contacts in the
rear of the UPS are configured
for REPO operation and they
have been activated.
The load level is at or has
exceeded the configurable
threshold limit for a Level 1
Overload condition.
The load level is >101% and
<110% of the UPS rating.
The load is >110% of the UPS
rating.
Battery voltage levels have
exceeded the maximum
allowable limits.
Action
The UPS transfers to Battery mode if
supporting load.
The UPS transfers to Battery mode if
supporting load.
The UPS transfers to Battery mode if
supporting load.
Have a qualified electrician correct the wiring
problem. If the UPS is not wired with a neutral
wire, Site Fault should be disabled in the
Settings menu (see page 46).
The UPS de-energizes the load and enters
Standby mode. See "Installing Remote
Emergency Power-off" on page 30 for more
information.
The UPS can support the load indefinitely at
this load level.
The alarm clears when the load drops below
5% of the set point.
Remove some of the equipment from the
UPS. The UPS continues to operate, but
transfers to Fault mode in two minutes.
The alarm clears when the load drops below
5% of the set point.
Remove some of the equipment from the
UPS. The UPS continues to operate, but
transfers to Fault mode in 300 ms to one
second.
The alarm clears when the load drops below
5% of the set point.
The UPS turns off the charger until the next
power recycle. Contact your service
representative.