Pylontech PowerCube-M1-C Operation Manual page 52

after correct Internal cable
wiring issue
connection
PMU issue
and start up
procedure
Other error
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.
Failure Failure
Type Definition
External Input
（Bit4）
External DC OV
input
voltage
（Bit3）
External Emergency
stop（Bit13）
Current Current
Leakage Leakage Error
（Bit21）
Self-test Self-test
module
Error（Bit16）
Self-test Self-test
module
coulomb error
（Bit15）
Self-test Self-test
module
detecting
amount
（Bit14）
Self-test Safety
failure（Bit11）
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.
Possible Reason
RV Err D+ D- reversely
connected
ERR D+ D- voltage
over extremely higher than
error battery system
voltage
Command by external
device
contactor
Current
Leakage >25mA
Self-test failed
Initial
Self-test failed
Self-test failed
error
check Chip self-test failed
Solution
Check the external power cables of
the polarity and connection
Check
whether match with the battery system
or not.
Command by external device, not an
via dry error actively report by Battery system.
1.With insulation glove, disconnect the
battery system and contact Pylontech
service engineer.
1. Restart
2.If problem remain, contact
Pylontech service engineer.
contact Pylontech service engineer.
contact Pylontech service engineer.
1.Restart
2.If problem remain, contact Pylontech
47
external inverter`s voltage