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Troubleshooting
46 TM800_D00165_00_M_XXEN/06.2015
*Please make a note of the cause of error, the error number and if applicable the error code. This in-
formation facilitates the diagnosis and repair of the equipment.
6.2 Malfunctions
Below please find a selection of errors likely to occur and how to eliminate them. This error list does
not claim to be exhaustive. Possible error codes occurring after carrying out a test are listed in the
chapter "Test function" on page 52f.
8 Address external
ERROR (XXX) Address of the TM800 on the
external BMS bus is already
occupied (XXX=current address) Change the address of TM800 in
the menu
9
I
2
C-0-Error I
2
C-Bus-Interrupt
Replace BM800 module*
10
I
2
C-1-Error I
2
C-Bus-Interrupt
Replace BM800 module*
Error Possible cause Task
No indication on the display
of the TM800 alarm indicator
and operator panel. Check AC/DC 24 V power supply;
Check the fuse of the power sup-
ply unit. Replace fuse, if required.
No characters on the display,
although the display is illumi-
nated. Replace BM800 module*
Function buttons do not
operate. Replace BM800 module*
The common alarm LEDs do
not perform any function Replace BM800 module
Character matrix visible on
the display, but firmware
doesn't run. Replace BM800 module
Time of day gets lost in case
of short-term voltage failure Replace BM800 module
Error during the execution of
a switching command (No.
and address of an operating
and display module not
found). Interface of the internal I²C bus
defective; ribbon cable or plug
defective; address at the operat-
ing and display modules not cor-
rectly set or assigned twice via
DIP switch. Replace defective part
Change the address.
No. Display Description Task