2.7 Current Alarm: UT / OT (e.g Cell_UT) / SysTemp
System has detected a temperature which is too high (>50°C) or too low (<-10°C).
No.
Name
Description
27
SysTemp
If SysTemp in Run Data is OK (-10°C to +50°C):
Test another BCU, if available
28
Charge_UT / OT
Cell_UT / OT
If maxCellTemp or minCellTemp is outside the range -10°C to +50°C: Check
temperatures under Run Data for each module. If only one module deviates, then
try to remove this module or replace ist, if a replacement module is available.
2.8 Current Alarm: Cell_UV1 / Cell_UV2 / Cell_UV3
Error Probably caused by undervoltage or a faulty sensor.
No.
Name
Description
29
UV1
Recharge of the battery by the inverter is necessary. Please go through the above
steps (especially: check communication, install updates, restart the entire system).
If not recharge by inverter is not possible, a charger may be required. Switch off
the battery and contact EFT-Systems (screenshots).
30
UV2
If the battery is not being charged by the inverter immediately after restarting, then
switch off the battery after a few minutes and contact EFT-Systems (screenshots,
voltage). Charger necessary.
31
UV3
Immediately turn off the battery and contact EFT-Systems.
2.9 Current Alarm: DCBusFault
No.
Name
Description
32
DC Power cables
Make sure that + and - are properly connected.
Check the imprint and the board!
33
Disconnect the battery
from the inverter
For testing, please disconnect the inverter completely from the battery
(communication cable and DC cable). If the error persists, then try another BCU, if
available.
6
