How do I fix Grid Over-Frequency on a Solis?

Fault is usually transient — wait 5 minutes for auto-recovery. Check Solis app for frequency readings Then: If persistent: confirm G98/G99 frequency settings in inverter match DNO requirements

Solis

E003

Grid Over-Frequency

Grid frequency above 51 Hz limit. Inverter disconnects.

Common causes

Grid instabilityDNO frequency event

What to check

STEP 1

Fault is usually transient — wait 5 minutes for auto-recovery. Check Solis app for frequency readings

STEP 2

If persistent: confirm G98/G99 frequency settings in inverter match DNO requirements

Escalate if

Fault recurring more than once per day — contact DNO and Solis support with frequency log

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