166 Troubleshooting
Warning messages generated by the inverter
Warnings do not prevent inverter power feed to grid, but output power may be limited.
Code Warning Cause What to do
44544
(0xae0
0)
Current calibration Current calibration is about to be
performed.
Current offset and gain
measurement calibration will be
performed at next start.
-
44549
(0xae0
5)
BU current difference Current difference detected by
branching unit.
Check
• current difference between
power modules
• power module internal fault
Contact your local FIMER
representative.
44553
(0xae0
9)
DC link overvoltage • Excessive intermediate circuit
DC voltage.
• DC-output from solar panels is
too high.
Check the dimensioning and
installation of solar arrays.
44556
(0xae0
c)
BU DC link difference Unbalance in DC link voltage of
parallel modules has exceeded
limit.
Contact your local FIMER
representative.
44562
(0xae1
2)
IGBT overtemperature Estimated inverter IGBT
temperature is excessive.
Check:
• ambient conditions
• air flow
• fan operation
• heat exchangers and grills for
dust pick-up.
44564
(0xae1
4)
Excess temperature Temperature measurement from
power unit is too high
Check:
• ambient conditions
• air flow
• fan operation
• heat exchangers and grills for
dust pick-up.
44565
(0xae1
5)
Excess temperature
difference
Too high temperature difference
between IGBTs of different
phases.
Check:
• ambient conditions
• air flow
• fan operation
• heat exchangers and grills for
dust pick-up.
44566
(0xae1
6)
IGBT temperature Inverter module IGBT temperature
is excessive.
Check:
• ambient conditions
• air flow
• fan operation
• heat exchangers and grills for
dust pick-up.