Maintenance; Trouble Shooting - Pylontech PowerCube-X1 Operation Manual

5.

Maintenance

5.1 Trouble Shooting:

Danger: The PowerCube-X1 is a high voltage DC system, operated by qualified and authorized
person only.
Danger: Before check the failure, must check all the cables connection and setting of ADD
Switches are right or not (refer to chapter 3), and the BESS system can turn on normally
or not.
No Problem
1 Turn on the BMS. All battery
modules' status LED is not
working.
2 Turn on the BMS. The Status
LED for BMS is not working.
But all battery modules'
status LED is lighting green.
3 Turn on the BMS. The Status
LED is lighting red. But all
battery modules' status
LED is lighting green.
The BMS's Status LED is
lighting red and some the
battery module's status
4
LED is lighting green but
some is lighting red.
Possible Reason
The DC/DC power

board or control board
is failure.
The communication

cable from BMS to the
first battery module is
broken
Power cable is broken;

The control board is

failure.
This battery string is

under protection. It is
possible Over Current
Protection or Failure
Protection.
 Communication cables
failure;
 Battery String is reversed
connection.
This battery string is

under protection. It is
possible Over Current,
Over Voltage, Low
Voltage, Over
20 / 31
Solution
Change the control

module (BMS module)..
Change the broken

communication cable;
Check all the power

cables and
connections are fine or
not;
Change the control

module (BMS module).
 Through the monitor or
maintenance software
check the battery cell,
battery module has
alarm or not.
 Check the
Communication Cables;
 Reversed connection is
serious danger!
Use the monitor or

maintenance software
to check the battery
cell, battery module
has protection and
18BISV0101