Appendix II
Troubleshooting
1. Battery pack stop work.
A: Turn on switch, be sure it is ON; if battery is low SOC. it need to charging in.
B: Battery pack low volt or enter sleep mode, there you will press down power switch button, then
charge in.
2. No communication, inverter can not received any DATA from BMS.
A: Check whether if communication cable is OK.
B: Replace the communication line.Please give feedback to the dealer and exchange it.
C: Check inverter or other device which connect to BMS, update it is firmware.
D: If the communication function needs to be upgraded, please consult the agent or manufacturer.
E: Confirm your inverter and battery protocol is correct, different protocol or different connection
will make a mistake.
3. Battery pack report SOC is mistake.
A: Inverter received Data from Master BMS, but it is SOC < total SOC, sample as: packs has 50 Ah
capacity, but inverter read DATA is 30 Ah. So you may check every cell Voltage unbalance.This
will lead to lower SOC.
B: SOC DATA has Large tolerance.
Discharge empty the battery first, then charge it fully with a small current, and learn to
discharge．Any pack is mistake we advice you read the BMS Data (When we authorize the
terminal to use)with host software. Then we reset the BMS and calibration．
4. How to turn on the Pack to discharge．
We recommend method is:
A: Reset the power switch,then restart bms system.
B: Turn on the power switch on the bottom/front panel.
WARNING: The operating parameters of the equipment cannot exceed the rated
working voltage and current of the Pack，exceed the rated volt and current, can
cause damage to the Pack or other failures.
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User Manual
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User Manual
5. Inverter or other external device can not connect the battery．
We recommend method is:
A: Check whether the working parameters of the device and battery are appropriate, and improper
parameters cannot be matched.
B: It is necessary to update BMS parameters and match the device, then Reset BMS and restart
your device.
6. Replace bad Pack.
There is a bad battery pack, it is need to replace, please connect your supplier, need professional
installers to operate it. We recommend replace all or make pack has same voltage and same
specification batteries pack.
NOTE: When replacing the battery, the same module needs to be replaced at the same time, and
the voltage should be the same．
7. Replace bad Pack.
Some parts can be obtained from the sales or agency, and the excess parts need to be purchased
separately.Be careful, turn off the power switch before replacing parts.
8. Need to place some safety device for keep a safe environment.
You’d keep a safe case for Pack and external device, Please place safety device, as: fire-fighting
sand, fire-fighting blankets, fire-fighting water pipes, Install Monitor sound, light, electricity, smoke
and other equipment.
WARNING:
Emergency process:
1. The external device catches fire and explodes:
A: Under the condition of ensuring safety, non-operating personnel immediately move to a safe
location.
B: Under the condition of ensuring safety, the operator immediately cut off the external power
supply of the equipment and the internal power supply.
