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2. Ensure your computer has the proper drivers.
A.
Sometimes a computer will need a driver update to allow the service tool to work. Please
see the Service Tool Manual by BMZ for instructions on how to do this.
3. Try reinstalling the firmware.
A.
If during an attempt to read information from the battery with the service tool an error
message appears that states something about an unknown command during transfer,
attempt to reinstall the firmware. It's possible that a previous firmware update was
incomplete.
4. Try connecting the USB cable inside the battery directly to the laptop.
If the above is completed and:
A.
You get communication:
This means the pass-through USB port on the housing is bad (assuming the USB cable that
was used is working) and should be replaced. Contact BMZ for a replacement port.
B.
You do not get communication:
This very likely indicates some internal issue if all other methods have also failed. Please
contact BMZ.
2.6
Battery has been working properly with inverter but has suddenly
stopped working and turned off
Normally, the inverter is powered by the battery. If the battery stops providing power, the inverter will
shut down.
If the battery loses communication with the inverter (such as if the inverter shut down), it will
automatically turn off after 20 minutes and must be manually restarted.
1. Check for any battery errors and check environmental conditions at the battery location.
A.
Verify battery is functioning via visual inspection and the service tool.
B.
Verify battery voltage level. Please see the section for this in this document if there is
an issue.
C.
Verify proper environmental conditions. Too hot or too cold will cause the battery to
protect itself and turn off the voltage output. Please see section about temperature.
D.
If errors are present (RED LED is on solid or blinking by itself) despite acceptable
environmental conditions and turning the battery ON and OFF does not clear the errors
and allow the battery to work, contact BMZ.
Page 8 of 14
Version 1.01
ESS Troubleshooting Guide
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