86
Section B During operation
：
(1)
Error Code checked from BMS (Modbus protocol Appendix IV or CAN ID 0*4250&0*4290):
*The ‘Failure Definition’ and ‘Failure Mode’ column is reference from Pylontech Modbus protocol
Appendix IV Error code 1 bit to present.
External
Input RV Err (Bit4)
D+ D- reversely
connected.
Check the external power cables of the
polarity and connection.
External
DC OVER input
over voltage error
(Bit3)
D+ D- voltage
extremely
higher than
battery
system
voltage.
Check external inverter`s voltage whether
match with the battery system or not.
External
Emergency stop
(Bit13)
Command by external
device via dry
contactor.
Command by external device, not an error
actively report by Battery system.
Current
Leakag
e
Current Leakage
Error (Bit21)
Current
Leakage >25mA.
1.With insulation glove, disconnect the
battery system and contact Pylontech
service engineer.
Self-test
Self-test
module
Initial
Error
(Bit16)
Self-test failed.
1.
Restart.
2. If problem remain, contact Pylontech
service engineer.
Self-test
Self-test
module
coulomb error
(Bit15)
Self-test failed.
Contact Pylontech service engineer.
Self-test
Self-test module
detecting
amount error.
Self-test failed.
Contact Pylontech service engineer.
Self-test
Safety check
failure (Bit11)
Chip self-test failed.
1.Restart.
2.If problem remain, contact Pylontech
service engineer.
Self-test
Self-test volt
error (Bit10)
Battery cell voltage
measurement
mismatch with DCBUS
voltage
measurement.
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
Battery cell
Battery
damage error
(Bit6)
Battery cell voltage
measured at < 2.0V
1.
Restart.
2.
Swap out the RED LED module.
3.
Use multimeter to measure the battery
module power terminal voltage, if is the
same as the BMS reading value, then it`s a
true cell damage. Otherwise please swap
the BMU of the module.
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