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Studer Innotec SA
Xcom-MS
20 V1.0.1 User Manual
7. Troubleshooting
To ensure a smooth running of the system it is important to set it up in accordance with the installation manuals
from Studer Innotec SA and MorningStar. If at commissioning the system is not operational, please check
your installation's compliance with the requirements stated in the manuals mentionned above.
If your system still isn't working, please check the following points:
1. Check the position of the programmation switches on the MPPT TriStar solar charge controllers. The
switches 4, 5 and 6 should be set to "ON".
2. Check that the software update of the Xtender system was carried out in accordance with the official
procedure. The latest software version of your installation is available on the SD card delivered with the
Xcom-MS or can be downloaded from our website: http://www.studer-innotec.com.
3. Check the wiring and that the communication cable RS-485 is correctly inserted in the connection com-
partment.
4. Check that the address assignement procedure described in section 4.4 has been followed.
5. Check that the battery voltage is visible on the TriStar solar charge controller terminals.
6. The TriStar solar charge controller can function without connection to the Xcom-MS. When the RS-485
connector is disconnected, the TriStar solar charge controller will stop automatically. It has to be discon-
nected from the battery and then reconnected in order to function in autonomous mode. On the contrary,
only one solar charge controller without battery connection will put the RS-485 bus out of order.
7. If the Xtender installation is disconnected (for example by disconnecting the communication cable) or shut
off, the TriStar solar charge controller will automatically return to an independant mode and will continue
to charge and maintain the battery.
8. When the synchronisation is activated {8001}, the TriStar's green LED is normally flashing once every
second (as when it is in independent absorption mode). With the synchronisation activated, it is also pos-
sible to indicate the charge phase in one of the two battery information fields on the RCC-02/-03 remote
control's Xtender screen.