24
1MRS 752179-MUM
Earth-Fault Relay
Operator’s Manual
REJ 521
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The fault codes are listed in the following table. 
1)
 May be corrected by formatting to the factory setting.
Table 3.3.2.3-1 Fault codes
Fault code Type of fault
4 No response on the output contact test, PO1
5 No response on the output contact test, PO2
6 No response on the output contact test, SO1
7 No response on the output contact test, SO2
20, 21 Auxiliary voltage dip
30 Faulty program memory
50, 59 Faulty work memory
51, 52, 53, 54, 56
Faulty parameter memory 
1)
55 Faulty parameter memory
103, 104 Faulty configuration set (for IEC_103)
131, 139, 195, 203, 222, 223 Internal reference voltage error
253 Error in the measuring unit
Faultc
C
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STARTREADY TRIP
INTERNAL FAULT
FAULT CODE  :56