How do I fix Battery BMS Fault on a Solis?

Check battery BMS status LEDs or display (Dyness Powerbox G2 has LED bar on front). Note error code if displayed Then: Power cycle battery — BMS breaker OFF 60 seconds, then ON. Monitor for fault return

Solis

E026

Battery BMS Fault

Battery BMS has reported a general fault. Requires investigation of battery BMS status.

Common causes

Cell imbalanceBMS hardware faultFirmware issue

What to check

STEP 1

Check battery BMS status LEDs or display (Dyness Powerbox G2 has LED bar on front). Note error code if displayed

STEP 2

Power cycle battery — BMS breaker OFF 60 seconds, then ON. Monitor for fault return

Escalate if

Fault returns after power cycle — contact battery manufacturer with BMS error code

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