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29
11 Troubleshooting
Notes:
• If a problem occurs, ensure the mains input voltage is present before contacting service personnel.
• Have the following information ready before contacting service personnel:
• Unit information, including model, serial number, etc.
• An exact description of the problem. The more detailed description of the problem, the better.
• If the UPS displays an error code, refer to the following table to diagnose and resolve the problem.
Error Code Definition Possible Cause Solution
F01
Inverter Voltage is High The UPS has abnormalities. Contact service personnel.
F02
Inverter Voltage is Low The UPS has abnormalities. Contact service personnel.
F03
O/P Short Output has a short-circuit issue.
1. Check whether the output has a
short-circuit issue.
2. Contact service personnel.
F06
Inverter Relay is Weld The UPS has abnormalities. Contact service personnel.
F07
DC Offset Voltage of the Output is
High
The UPS has abnormalities. Contact service personnel.
F17
Charger Fault Charger is damaged. Contact service personnel.
F21
WatchDog is Activated The UPS has abnormalities. Contact service personnel.
F26
Battery Low Shutdown
The UPS transfers to run in
battery mode due to AC utility
abnormality. However, the battery
power is almost used up.
1. Check the main AC source and
the main power cord’s status.
2. Contact service personnel.
F27
Over Temperature The UPS temperature is too high.
1. Check whether the UPS
ventilation is normal.
2. Decrease the loads.
3. Check whether the fan runs
normally.
4. Clean the filters (if any are
installed).
F28
Fan Fault Fan is damaged or stuck.
1. Check if foreign matter is stuck
in the fan. If yes, remove it.
2. Contact service personnel.
F29
EPO Shutdown
An emergency shutdown is
executed.
After emergency events are
eliminated, follow the turn-on
procedures to start up the UPS.
F30
Site Fault is Present
Earth wire is missing or line and
neutral are reversed.
Contact your local electrician to
check power distribution.
Other Issues That May Occur
Error Code Problem Possible Cause Solution
F20
Overload The UPS is overloaded. Decrease your connected loads.
F22
Battery Missing
1. Internal battery not installed.
2. Battery cables are not
connected or connectors are
loose.
1. Contact service personnel or
Tripp Lite Customer Support.
2. Connect the battery cables and
connect them firmly.
F23
Weak Battery/Battery Replacement
Batteries are damaged or end of
battery life.
Contact service personnel or
Tripp Lite Customer Support.
Note: If all possible causes are eliminated but the alarm still appears, contact your local dealer or service personnel.
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