44
6.2. Error Codes and Their Descriptions
Code Descriptions
Er05
Battery weak or faulty
Er06
Output short-circuited
Er07
EPO mode
Er11
UPS over-temperature
Er12
Inverter overload
Er14
Fans out of order
Er18
EEPROM's data error
Er24
Utility Low
（
<85/170V
）
& Battery Disconnect
Er28
Bypass overload
Er31
EEPROM's data not conform to the Jumper Setting
45
6.3. Maintenance
Clean the dust from the ventilation openings and intakes on the rear panel.
1. Turn off the UPS and wipe the casing with a damp cloth.
2. Periodically unplug the power cord of the UPS from the wall receptacle to
test the batteries condition.
3. Be sure you have already saved your application before you proceed the
battery discharging capability test.
