How do I fix Battery Under-Voltage on a Solis?

Check inverter battery discharge cut-off voltage setting. Dyness Powerbox G2: minimum 44V. Fogstar Drift 16kWh: minimum 44V Then: Attempt to charge battery from grid — set inverter to forced charge mode in Solis app

Solis

E022

Battery Under-Voltage

Battery pack voltage has dropped below minimum safe level.

Common causes

Battery deeply dischargedDischarge cut-off set too lowBMS fault

What to check

STEP 1

Check inverter battery discharge cut-off voltage setting. Dyness Powerbox G2: minimum 44V. Fogstar Drift 16kWh: minimum 44V

STEP 2

Attempt to charge battery from grid — set inverter to forced charge mode in Solis app

Escalate if

Battery won't accept charge, voltage continues dropping — BMS fault, contact battery manufacturer

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