Alerts by Status Indicators
The temperature difference inside the battery module is larger than the tolerance
limit. At the fault 1 state, try these steps:
1. Check the conditions of the battery module using any available method.
2. Make sure that no heating or cooling source is nearby.
3. Deactivate the ESS and wait for around 2 hours until the temperature difference
is reduced to less than 5°C.
4. Re-activate the ESS.
If the problem persists, contact LG Chem for technical assistance.
1.5
Lost communication
1.5.1
Lost communication between battery modules
Indicators
Alert Level Alert condition
Charge
limit
Discharge
limit
Release condition
Fault 1
Lost communication for 10 s
0%
0% Resumed for 1 s
Fault 2
Lost communication for 50 s
0%
0%
Communication with other battery modules is lost for longer than the tolerance limit.
1. Check the conditions of the battery module using any available method.
2. Deactivate the ESS.
3. Make sure that the intra-rack communication cables are properly connected be-
tween the battery modules.
4. Re-activate the ESS.
1.5.2
Lost communication with the higher level system
Indicators
Alert Level Alert condition
Charge
limit
Discharge
limit
Release condition
Fault 2
Lost communication for 610 s
0%
0%
Communication with the higher level system is lost for longer than the tolerance
limit.
1. Check the conditions of the battery module using any available method.
2. Deactivate the ESS.
3. Make sure that the higher level communication cable is properly connected be-
tween the master module and the higher level system.
4. Re-activate the ESS.
11