Troubleshooting - Liebert PS User Manual

Liebert PS UPS
Manual
3. Trouble Shooting
Symptom
No LED display 1. Missing battery.
on the front
2. Battery defect.
panel.
3. Power switch is not pressed.
In the occurrence 1. Overload of the UPS.
of a power failure,
2. Battery voltage is too low.
backup time is
3. Battery defect due to high
short.
Mains normal but 1. Fuse is blown.
LED is flashing.
2. Power cord is loose.
Contact Information
Warranty administration
UPS Applications/tech
Page ５
Possible Cause
temperature operation
environment, or improper
operation to battery.
: microups.warranty@liebert.com
: upstech@liebert.com
Remedy
1. Charge battery up to 8 hours.
2. Replace with the same type of
battery.
3. Press power switch again.
1. Remove some noncritical load.
2. Charge battery 8 hours or more.
3. Replace with the same type of
battery.
1. Replace the same type of fuse.
2. Reconnect the power cord
properly.
V2.6
Installation and User
Emerson Network Power