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

This is a BMS protection — normal behaviour below 0°C. Battery will not charge until temperature rises above 0°C Then: Advise customer battery must be installed in a thermally protected space (minimum 0°C for charging). Relocation may be needed

Solis

E024

Battery Under-Temperature

Battery too cold to charge safely. BMS prevents charging below 0°C to protect lithium cells.

Common causes

Battery in unheated garage or outbuildingWinter temperaturesBattery not in thermally regulated space

What to check

STEP 1

This is a BMS protection — normal behaviour below 0°C. Battery will not charge until temperature rises above 0°C

STEP 2

Advise customer battery must be installed in a thermally protected space (minimum 0°C for charging). Relocation may be needed

Escalate if

Temperature is above 0°C confirmed but fault persists — BMS sensor fault, contact manufacturer

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