Solis
LG-Comm-FAIL

LG Battery Comms Failure (Alarm 2021)

Communication with the LG battery lost.

Comms cable issueLG battery fault
STEP 1
Check the comms cable, then restart the battery.
Persists, contact LG battery support
Need full interactive diagnosis?
Faultpath walks you through decision trees, fault codes, and commissioning — built for solar & battery engineers.
Open Faultpath

More Solis fault codes

E001
Grid Over-Voltage
E002
Grid Under-Voltage
E003
Grid Over-Frequency
E004
Grid Under-Frequency
E005
Grid Impedance High