162 Troubleshooting
37163
(0x912b)
MV transformer
overpressure fault
Medium voltage transformer
overpressure fault occurred.
Check MV transformer.
37164
(0x912c)
MV breaker opened
fault
Medium voltage breaker is
opened.
Check MV transformer.
37165
(0x912d)
MV transformer
vacuum fault
Medium voltage transformer
vacuum fault occurred.
Check MV transformer.
37166
(0x912e)
MV transformer low oil
level fault
Medium voltage transformer low
oil level fault occurred.
Check MV transformer.
37167
(0x912f)
MV transformer
temperature fault
Medium voltage transformer
overtemperature fault occurred.
Check MV transformer.
37168
(0x9130)
Main circuit SPD Main circuit surge protection
device failure.
Check
• surge protection device and its
wiring
• parameter 185.01 Main circuit
SPD status.
37169
(0x9131)
DC fuse DC fuse is blown. See aux. code for module
information.
Check
• parameter 185.02 DC input
fuse status to know the failed
module
• DC input fuses and wiring.
37170
(0x9132)
48 V power supply 48 V power supply failed. See aux. code for module
information.
Check
• parameter 185.03 48 V power
supply status to know the
failed module
• wiring of 48 V power supply.
37171
(0x9133)
48 V buffer 48 V buffer failed. See aux. code for module
information.
Check
• parameter 185.04 48 V buffer
status to know the failed
module
• wiring of 48 V buffers.
37172
(0x9134)
24 V buffer 24 V buffer failed. See aux. code for module
information.
Check
• parameter 185.05 24 V buffer
status to know the failed
module
• wiring of 24 V buffers.
Code in
Dec
(Hex)
Fault Cause What to do