PV String Voltage Fault (IE 05)

PV string voltage outside MPPT operating window.

Common causes

String voltage too high (above 500V X1 or 950V X3)Too many panels in series

What to check

STEP 1

Check open-circuit voltage of strings vs inverter MPPT range.

Escalate if

Voltage confirmed within range but fault persists

Need full interactive diagnosis?

Faultpath walks you through decision trees, fault codes, and commissioning — built for solar & battery engineers.

More SolaX fault codes