Pylontech PowerCube-X1-V2 Operation Manual page 45

Comm. BMS
and Internal
hardware bus error
（Bit9）
Failure Failure
Type Definition
Self- Self-test
test volt error
（Bit10）
Self- Safety
test check
failure
（Bit11）
External Emergency
stop
（Bit13）
Self- Self-test
test module
detecting
amount
error
（Bit14）
Self- Self-test
test module
coulomb
error
（Bit15）
Self- Self-test
test module
Initial
Error
（Bit16）
Comm. Communicat
and ion error
hardware between
master and
slave BMS
（Bit17）
CMU internal error
or I2C issue
Possible Reason
Battery cell
voltage
measurement
mismatch with
DCBUS voltage
measurement
Chip self-test
failed
Command by
external device
via dry contactor
Self-test failed
Self-test failed
Self-test failed
1. Battery
string(s)
over-discharged
2. BMS CMU error
40
of the bypassed module. If
not, further bypass the next
LED off module and repeat the
process.
3. If problem remain, contact
Pylontech service engineer.
1. Restart
2. Change the current
measurement board
3. Change the CMU or BMS.
4.If problem remain, contact
Pylontech service engineer.
Solution
1.Restart
2.Check the connectivity and
reliability of the power and
comm. cable by reconnection.
3. Swap the current
measurement board or BMS
4.If problem remain, contact
Pylontech service engineer.
1.Restart
2.If problem remain, contact
Pylontech service engineer.
Command by external device,
not an error actively report
by Battery system.
contact Pylontech service
engineer.
contact Pylontech service
engineer.
1. Restart
2.If problem remain, contact
Pylontech service engineer.
1. Check whether the battery
string(s) has been
overdischarged or not via
multimeter.
2. Check the comm. cables
between master and slave BMS,
make sure the cable is 8PIN
pin – pin CAT5 Ethernet cable.