Safety Notes And Important Information; Important Information On This Guide; Expected Battery Operation - BMZ ESS Troubleshooting Manual

1

Safety Notes and Important Information

1.1

Important information on this guide

This guide contains information for troubleshooting issues of the BMZ ESS energy storage
system. It is directed towards users of the BMZ
All the questions and information presented in this document represent items that have
actually been asked by or clarified to users and installers of the BMZ ESS at some time in the
past.
Please ensure you have reviewed all information relevant to usage and operation of the
battery and the safety information contained therein prior to conducting any troubleshooting
exercise. This guide does depend on information contained in other documentation.
It is kindly asked that should you have any trouble with the BMZ ESS
battery, try following the information laid out in this guide prior to
contacting BMZ.
1.2

Expected Battery Operation

The following is a short list of expected and readily observable battery behaviors under normal
operation and are usually no cause for concern:
- Loud click is heard right after the battery is turned on.
o This is the relay inside the battery closing.
- RED and GREEN LEDs flash once per second.
o Battery is in standby mode and ready for communication with inverter.
- Green LED is solidly ON.
o Battery is operational and has communication from other batteries or the inverter.
o If the LED is solid and is not connected to any communication, this indicates an issue.
- The battery will automatically turn off.
o If 20 minutes elapses and the battery has no communication with an inverter, it will
turn off.
o If 1 minute has elapsed and certain conditions are present that would cause the battery
to protect itself, it will turn off. (low voltage, temperature, etc.) This is cause for
concern.
The ESS is a very reliable battery with many thousands in use around the world. However, while nothing
is perfect, many issues do have simple fixes or explanations.
Page 4 of 14 Version 1.01
ESS 7.0, ESS 9.0, and ESS X.
ESS Troubleshooting Guide