156 Troubleshooting
15877
(0x3e05)
DC link undervoltage Intermediate circuit DC voltage is
not sufficient.
Contact your local FIMER
representative.
15878
(0x3e06)
BU DC link difference Difference in DC voltages
between parallel-connected
power modules.
Contact your local FIMER
representative.
15879
(0x3e07)
BU voltage difference Difference in AC voltages
between parallel-connected
power modules.
Contact your local FIMER
representative.
15880
(0x3e08)
LSU charging Intermediate DC voltage
charging time exceeded.
Voltage level or du/dt or charging
current is not acceptable.
Aux. code:
1 = indicates voltage rise is
not acceptable
2 = indicates DC voltage level
is not acceptable
3 = indicates charging current
is too high
4 = indicates charging time is
too high
8 = indicates DC voltage
dropped too low
Check aux. code.
Contact your local FIMER
representative.
15882
(0x3e0a)
LSU charging busbar Charging circuit fault. Contact your local FIMER
representative.
15885
(0x3e0d)
Overvoltage Fault Grid monitoring voltage
exceeded limits.
Reset fault when grid situation
has stabilized.
15886
(0x3e0e)
Undervoltage fault Grid monitoring voltage
exceeded limits.
Reset fault when grid situation
has stabilized.
15888
(0x3e10)
DC unbalance fault Unbalance between DC link
upper and lower branch
capacitor voltage.
Reset the fault once. If fault
persists, wait for further
instructions.
Contact your local FIMER
representative.
19971
(0x4e03)
Excess temperature IGBT temperature exceeded
limits.
Check
• ambient conditions
• air flow and fan operation
• air inlets for dust pick up or
obstacles.
19972
(0x4e04)
Excess temperature
difference
Too high temperature difference:
• between IGBTs of different
phases
or
• between measurements of
single module.
Refer to the Commissioning and
maintenance manual.
If problem persists check the
aux. code and contact your local
FIMER representative.
Code in
Dec
(Hex)
Fault Cause What to do
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