Eaton DX 2000 LAN - Maintenance and Support; Typical Troubleshooting Guide

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5. Maintenance
5.1 Typical Trouble Shooting
(1) Trouble shooting according to warning indication.
LCD WARNING
CODE
Possible cause
Action
CHGF
Charger failed
Make sure the charger is ok.
TEPH
Temperature High
Check the ventilation of the
UPS, check the ambient
temperature.
bOPN
The battery is
disconnected
Check if the batteries
connect abnormal.
OVLD
Overload
Check the loads and remove
some non-critical loads.
Check whether some loads
are failed.
EPO
EPO function is
active.
Connect the EPO switch.
bLOW
Battery low
Check the battery. If the
UPS is a long back up
model, check whether the
external battery protection
(breaker of fuse) is open. If
the battery is damaged or
aged, replace the battery.
HIGH
Battery over voltage,
or charger failed
Check the charger output,
battery input.