BYD MINI ES - 5. Daily Maintenance Methods; 5.1 Common faults

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5. Daily Maintenance Methods
5.1 Common faults
Common faults
Operation methods
MINI ES can’t start
Please check the battery circuit breaker closed or not (licensed
technician required).
MINI ES has no power
output
Please check batteries state of charge via APP, it might be too
low.
MINI ES shuts down
automatically
MINI ES has low SOC% and the system is at the off-grid mode
at this moment and when the grid and PV recover, the system
will reboot automatically.
Essential load can’t work
normally
1. Please check the important load distribution board circuit
breaker.
2. Please check the essential load rating to determine if it
exceeds 2kVA or not.
3. Please check the state of charge.
APP can’t read data
Please check the network connections of product.
The MINI ES sends power
to the grid
Please contact your service agent.
Wrong PV data
1、 the data is not real time
2、 CT has an error.
“POWER” 、“LOCAL” and
“REMOTE” keep on at
the same time.
If the product is unable to recover, please contact the supplier
or local service center.
Adress
Meaning
Processing method
3007
bit3：Battery over voltage protection
Replacement battery
bit5：Battery under voltage protection
Replacement battery
bit6：Battery sampling disconnection
Replacement battery or BMS
control board
bit8：Abnormal battery temperature sampling
Replacement battery or BMS
control board
3008
bit0：Battery over temperature protection
Use after the temperature is
lowered
bit2：Battery leakage protection
Stop using and check if the case is
deformed
2012
bit12:PCS fan failure
Replacement fan