How do I fix Grid Impedance High on a Solis?

Check all AC connections are tight — consumer unit, inverter terminals, any junction boxes Then: Measure voltage drop between DNO meter and inverter under load. If \u003e2%, AC cable may be undersized

Solis

E005

Grid Impedance High

Grid impedance exceeds inverter threshold. Inverter reduces output or disconnects.

Common causes

Long AC cable runUndersized AC cableLoose connection increasing resistance

What to check

STEP 1

Check all AC connections are tight — consumer unit, inverter terminals, any junction boxes

STEP 2

Measure voltage drop between DNO meter and inverter under load. If \u003e2%, AC cable may be undersized

Escalate if

Connections tight and cable sized correctly — contact Solis support

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