Warning What does this mean?

Your system is down or running degraded, but this is not an immediate safety danger. Work through the safe steps below.

SolarEdge Inverter Error 8X19: Meaning, Causes & Safe Fix

AC voltage too high — the grid voltage on the indicated line rose above the country's permitted limit, so the inverter shut down to protect itself. It restarts automatically when the voltage drops back to normal.

What should I do first?

Two quick questions — we'll point you to the right starting point.

Is this code still showing on your inverter's display?

What this code means

Your three-phase SolarEdge inverter measured AC grid voltage above the maximum allowed for your country's grid code on Line 1 (8x19), Line 2 (8x1A), or Line 3 (8x1B). This is a grid-side condition, not an inverter defect: the inverter disconnects to comply with grid protection rules and reconnects automatically once the voltage returns to the permitted range.

What is this downtime costing you?

Rough estimate while your system isn't producing. Adjust the numbers to match your setup.

System size (kW) Peak sun hours / day Electricity rate ($/kWh)

–per day

–per week

–per 30 days

≈ – kWh of lost production per day.

Estimate only — assumes ~80% real-world output vs. nameplate. Actual losses depend on weather, shading, panel direction, and your tariff.

Common causes

High local grid voltage during peak solar-export hours (most common — especially around midday in areas with lots of rooftop solar)
Voltage rise from undersized or very long AC wiring between the inverter and the grid connection point
Incorrect country/grid-code setting on the inverter
A grid network issue or nearby large load switching

Safe steps to try

Work top to bottom, ticking off each step as you complete it. 0 of 5 done.

Note which line the code indicates (8x19 = Line 1, 8x1A = Line 2, 8x1B = Line 3) and the time of day it appeared.
Check whether the issue coincides with midday peak-sun hours — if it clears by late afternoon, it is almost certainly high network voltage, not a faulty inverter.
Wait — the inverter restarts by itself once grid voltage normalizes (after a mandatory reconnection delay).
Check your switchboard for any tripped breakers while you wait.
If the code persists after the grid voltage has normalized, perform one full power cycle (P/1/0 to OFF, DC disconnect OFF, AC breaker OFF, wait 2 minutes, reverse the order).

Is your inverter still under warranty?

Before paying for a repair, check — your installer may fix this free.

Brand Year installed

Based on typical standard warranty terms — always confirm with your warranty card or installer paperwork, as terms vary by model, region, and purchase date.

When to call an electrician

If the error recurs daily or persists beyond 24 hours, contact your installer. They can verify the country setting is correct, check that the AC wire gauge suits the distance to the grid connection, or request a network voltage assessment from your grid operator.

Frequently asked questions

Will an AC overvoltage error fix itself?

Usually yes. The inverter is required to disconnect when grid voltage exceeds the limit and to reconnect automatically once it returns to normal. No action is needed for occasional events.

Is my inverter broken if I see 8x19?

No — the inverter is doing its job. It detected out-of-range grid voltage and protected itself. The cause is almost always the grid supply, not the inverter.

Why does this always happen around midday?

When many rooftop systems export at once, local grid voltage rises. If your street has dense solar coverage, midday voltage can exceed the limit on sunny days — a network characteristic, not an equipment fault.

Need a professional?

This fault may need professional diagnosis. Contact a qualified solar electrician in your area.

Sources: meaning and troubleshooting verified against the manufacturer's documentation — Troubleshooting SolarEdge Systems, Addendum (Europe & APAC), MAN-01-00333-1.1 — AC Voltage Too High (Line 1/2/3) row (three-phase CPU v3.18xx: 58/59/60 → CPU v3.19xx: 8x19/8x1A/8x1B; troubleshooting: check AC connection, verify country setting, consult grid operator, verify wire size, refer to AC Wiring Application Note).