How do I fix PV Over-Voltage on a Solis?

Measure open-circuit string voltage with multimeter on a cold morning (highest VOC condition). Must not exceed 1000V Then: Review string design — reduce panels in series if Voc (corrected for min temp) exceeds 1000V

Solis

E010

PV Over-Voltage

PV string voltage exceeds inverter maximum input voltage (Solis S6 max: 1000V DC).

Common causes

Too many panels in series for temperaturePanel specs not checked at installation

What to check

STEP 1

Measure open-circuit string voltage with multimeter on a cold morning (highest VOC condition). Must not exceed 1000V

STEP 2

Review string design — reduce panels in series if Voc (corrected for min temp) exceeds 1000V

Escalate if

String voltage within spec but fault persists — check MPPT input wiring

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