LEGRAND DAKER DK Plus 5 kVA Manuel D'installation page 66

INDICATION
Strange noise or smell
Error code table
ERROR CODE
Er05
Er06
Er07
Er11
Er12
Er14
Er24
Er28
Er39
66
DIAGNOSTIC
-
Battery weak or faulty
Output short-circuit
UPS over-temperature
Inverter overload
Fans out of order
CVCF mode with Bypass input
Bypass overload
Battery problem during the start-up process of the UPS
5 Troubleshooting
SOLUTION
Shut down immediately the UPS.
Turn off the distribution panel breaker
and the utility input breaker. Contact
the LEGRAND Technical Support
Service.
MEANING
EPO mode