9
35
Er21
Parallel communication error ( communication
wire disconnected or failure to find ID1 UPS )
in parallel system
36
Er24
CVCF mode with Bypass input
37
Er27
The UPS must be operated in normal mode in
parallel system
38
Er28
Bypass Overload Time out and cut off output.
39
Er31
The settings of both control board and driver
board are not matched each other.
40
Er33
Isolated transformer overheat
41
Er**
Other Error code
*The specified modes include Normal mode, ECO mode, CVCF mode, etc..