Pylontech PowerCube-X1 Operation Manual page 16

Warning: This Power Relay Switch must be sure turned ON. Otherwise it will affect
automatic checking process and causes danger.
Turn on the "POWER SWITCH":

Caution: When the breaker is tripped off because the system has over current or short
circuit, must after 30min to turn on it again, otherwise may cause the breaker damage.
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 10sec.
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.
Warning: If has failure during the self-check, must debug the failure then can start next
step.
If the "STATUS" lamp shows red from beginning, it means has failure in the battery string,
the Power Relays in BMS will switch ON, must debug at first.
(4) Switch the MBMS on after all the BMS turn on successful:
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