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6.7 Abnormal mode 
In abnormal mode such as Bus fault etc., the corresponding fault string 
would be shown on LCD display to indicate the status of the UPS, and 
the background light will become red color. For example “SHOR” would 
be  shown  when  the  connected  load  or  the  UPS  output  is  in 
short-circuited, the LCD display is shown as figure6.5 followings. 
 
 
 
           
 
 
 
 
                                    ■ Figure 6.5 The Fault mode