Corrective maintenance
10.11 Correcting a failed firmware upgrade or downgrade
Converter with control units CU250D-2
Operating Instructions, 04/2014, FW V4.7, A5E34261542B AA
295
Correcting a failed firmware upgrade or downgrade
How does the inverter report a failed upgrade or downgrade?
The inverter signals a fail
ed firmware upgrade or
downgrade with a quickly flashing RDY LED and a
lit up BF LED.
Correcting a failed upgrade or downgrade
To correct a failed firmware upgrade or downgrade you can check the following:
● Does the firmware version fulfill the requirements of your inverter?
– For an upgrade at least V4.5.
– For a downgrade at least V4.6.
● Have you inserted the card properly?
● Does the card contain the correct firmware?
● Repeat the appropriate procedure.
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