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.
Sungrow Inverter Code 010 — Islanding Explained for Homeowners
Sungrow fault code 010 means “Islanding” — the inverter has detected that grid power is gone and shut itself down. This is a mandatory safety response, not an equipment failure: a grid-tied inverter must never feed power into a dead grid. When the grid returns, the inverter restarts on its own.
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?
Is your system producing power right now?
What this code means
Sungrow's official documentation defines code 010 as “Islanding” — also described as “grid failure” or “no grid voltage / power cut.” Islanding is the situation every grid-tied inverter is designed to prevent: the inverter continuing to energise the local network while the wider grid is down. If that happened, line workers repairing the outage could be working on wires they believe are dead. So the moment the inverter senses the grid has vanished, it disconnects in a fraction of a second and displays 010.
Nine times out of ten, 010 means exactly what it says: there is a power cut. Check your lights and your neighbours' houses before doing anything else. But the code can also appear when the grid is actually fine — Sungrow's troubleshooting lists the checks that matter: the AC circuit breaker may have tripped, or the AC cables may not be firmly connected. In those cases the inverter cannot “see” the grid even though the street has power, and it reports 010 all the same. A breaker that trips the moment it is reset, or 010 that appears at the same time every day with no outage, both point to this local-AC-side category.
There is nothing to fix and usually nothing to reset. Sungrow's own end-user guidance for grid codes is explicit: do not make any adjustments to your inverter settings — if grid events keep happening, contact your grid operator or retailer and report the problem for investigation. The inverter will automatically attempt to reconnect once it detects a stable grid again, typically within a few minutes of the grid returning. A persistent 010 with the grid demonstrably up is an AC-circuit problem, and that belongs to your installer, not to a settings menu.
What is this downtime costing you?
Rough estimate while your system isn't producing. Adjust the numbers to match your setup.
≈ – 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
- Grid power outage — the overwhelmingly common cause; a blackout, a local network fault, or planned works.
- Tripped AC circuit breaker — the inverter's breaker in your switchboard has opened, isolating it from a live grid.
- Loose or failed AC cable connections — the inverter cannot detect grid voltage through a broken connection.
- Grid operator switching or maintenance — brief de-energisations during network works.
- Blown AC fuse or faulty isolator — rarer, but a failed component in the AC path looks identical to the inverter.
Safe steps to try
Work top to bottom, ticking off each step as you complete it. 0 of 5 done.
Is your inverter still under warranty?
Before paying for a repair, check — your installer may fix this free.
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
Call your installer if code 010 appears while your home has grid power, or if it recurs frequently without any outage. The AC breaker, cabling, and connections between switchboard and inverter need professional checking — never work on these yourself. If the whole street loses power often, report it to your grid operator or electricity retailer rather than your installer: repeated grid events are a network issue. As Sungrow's own end-user guidance states, do not adjust inverter settings in response to grid fault codes.
Frequently asked questions
Is Sungrow code 010 a fault with my inverter?
No — it is the inverter correctly detecting that grid power is gone. Sungrow's own documentation stresses that grid codes like 010 do not indicate an inverter fault; they show the inverter is working correctly. It shut down to keep the grid safe, not because anything broke.
Will 010 clear by itself?
Yes. Once the grid returns and stays stable, the inverter automatically reconnects and resumes normal operation. No reset is needed.
Can my Sungrow inverter power my house during a blackout?
Not a standard grid-tied model — anti-islanding shutdown is mandatory, and 010 is that shutdown in action. Only Sungrow hybrid models with battery backup configured for it can supply power during outages.
010 keeps appearing but there is no blackout — what now?
Then the inverter is losing sight of the grid for another reason: a tripping breaker, loose AC connections, or a failing isolator. That is installer and electrician territory — do not investigate the AC wiring yourself.
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 — Sungrow “Grid Error Code Explanation for End Users” (GD_201805_All_Grid Error Code Explanation for End Users_V1.0), official Sungrow Australia service document hosted on service.sungrowpower.com.au — Code 010 = “Islanding – No Grid Voltage / Power cut”; Code 002 = “Grid Over-Voltage”; guidance: grid codes do not indicate an inverter fault; do not adjust inverter settings; report repeated events to the grid operator or retailer. Corroborated by the Academy of Sungrow Distribution Europe (academy.sungrow-emea.com) Service FAQ: Fault code 010 = Grid Power Outage (Islanding); codes 002/003/014/015 = Grid Overvoltage.