after correct
wiring
connection
and start up
procedure
2. Open BMS case, check the connectivity and
reliability of the internal power supply cable
3. Open BMS case, use multimeter check PMU
12Vdc output and CMU LEDs. If neither is on,
please swap the PMU.
4. If problem remain, contact Pylontech service
engineer.
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 bits to present.
D+ D- reversely
connected
Check the external power cables of
the polarity and connection
DC OV ERR
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.
Command by external
device via dry
contactor
Command by external device, not an
error actively report by Battery system.
Current
Leakage Error
(Bit21)
1.With insulation glove, disconnect the
battery system and contact Pylontech
service engineer.
Self-test
module Initial
Error(Bit16)
1. Restart
2.If problem remain, contact
Pylontech service engineer.
Self-test
module
coulomb error
(Bit15)
contact Pylontech service engineer.
Self-test
module
detecting
amount error
(Bit14)
contact Pylontech service engineer.
Safety check
failure(Bit11)
1.Restart
2.If problem remain, contact Pylontech