Pylontech PowerCube-M1-C Operation Manual page 41

Turn on the 1 BMS (Battery Control Modules) of battery string:
st
The second BMS must be operated after the first battery string's self-check is successful.
From 1st BMS to the last BMS turn on the battery strings on one by one.
For external power supply,
1. Turn on the "Power Switch":
⚫
2. Turn on the "Isolating Switch":
⚫
3. System start process:
⚫
The battery string's system will check itself, if work normal the battery string system will go
to self-check mode.
If the BMS and all battery modules are working normally, every status LED will lighting
green, that's mean self-check are pass. Self-check will be finish within 5sec.
The BMS can't receive communication from upper equipment because the
communication is off, the "STATUS" lamp will light red after 30sec. That doesn't means
failure existing, it means this battery string is working normally.
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