Fronius Symo Service Manual page 110

Code Description
735 For this inverter no fitting
update is on the USB flash
drive
736 Read or write error ap-
peared
737 Update file couldn't be
opened
738 Creating a Logfile is not
possible
740 Failure while writing initial-
ising
741 Failure while writing on
USB flash drive
743 Update failed
745 Checksum test failed
746 One or more boards could
not be identified
110
Behaviour
1. Old or defective update on
the USB flash drive
2. Update file from another in-
verter
3. Compatibility error
1. Incorrectly formatted USB
flash drive
2. USB flash drive secured with
a password
3. Read or write protection on
the USB flash drive
1. Defective update file
2. Failure while formatting
1. Incorrectly formatted USB
flash drive
2. USB flash drive secured with
a password
3. Read or write protection on
the USB flash drive
1. Failure in the USB flash
drive format
2. Defective USB flash drive
1. Memory on USB flash drive
full
2. Memory on USB flash drive
too small
3. USB flash drive unplugged
while writing
4. Mains voltage drop out while
writing
5. Invalid data
1. Unplugged USB flash drive
while updating
2. Update failed
3. Read or write protection on
the USB flash drive
4. Compatibility error
1. File on USB flash drive is de-
fective
1. Boards have not started
completely yet
2. Boards have not started
completely yet
3. Print data of some boards
are incompatible
Remedy
1. Load new update on the
USB flash drive
2. Use the correct update file
3. Check hardware compo-
nents
1. Format USB flash drive with
FAT32
2. Delete password protection
3. Delete read or write protec-
tion
1. Load new update on the
USB flash drive
2. Format USB flash drive
1. Format USB flash drive with
FAT32
2. Delete password protection
3. Delete read or write protec-
tion
1. Format USB flash drive
2. Use another USB flash drive
1. Delete data from USB flash
drive
2. Use a bigger USB flash drive
3. Reconnect USB flash drive
and start update again
4. Check grid
5. Format USB flash drive
1. Reconnect USB flash drive
and start update again
2. Restart update
3. Delete read or write protec-
tion
4. Check hardware compo-
nents
1. Format USB flash drive
1. Wait 1 minute with the up-
date
2. See device -> info menu: all
versions available?
3. Change inverter