Alpha Technologies Continuity: 6K_10K - Manual (Page 10)

0170012-J0 Rev A 8
Symbols Description
Utility input normal LED
Bypass input normal LED
UPS under redundancy mode
UPS under ECO mode
UPS fault or abnormal warning LED
EPO
Emergency power off
Er05
Battery weak or dead
Er06
Output short circuit
Er10
Inverter over-current
Er11
UPS overheating
Er12
UPS output overload
Er14
Fan error
Er15
Wrong procedure to enter maintenance mode
Er16
Output parameters set error in parallel system
Er17
ID numbers in conflict in parallel system or ID number error in single unit
Er21 Parallel communication error. Communication wire disconnected or failure to find ID1
UPS) in parallel system.
Er24
CVCF mode with bypass input.
Er27
The UPS must be operated in normal mode in parallel system.
Er28
Bypass overload time out and cut off output
Er31
The settings of the control board and driver board do not match.
Er33
Isolated transformer overheat
Er**
Other error code
*The specified modes include Normal mode, ECO mode, CVCF mode, etc.