Seeing an error code on your solar inverter and not sure what to do?
Don’t worry—your inverter is designed to alert you when something needs attention. Most error codes point to temporary conditions, connection issues, or a protection mechanism doing its job. Here’s how to respond safely and efficiently.
1. Write Down the Error Code
Start by recording the exact error code and any message shown on your inverter display or app.
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Examples include:
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Grid voltage out of range
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DC overvoltage
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Ground fault
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Isolation fault
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No communication with batteries
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Tip: Take a photo of the screen. This can be helpful if you need to contact support.
2. Restart the Inverter
A proper system restart often clears minor errors. If your system includes a battery, it’s important to follow the correct shutdown and startup sequence.
To Shut Down the System:
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Turn off the AC breaker to disconnect from the grid or home panel.
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Turn off the inverter using its power switch (if available).
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Turn off the DC solar disconnect, usually located near the inverter or combiner box.
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Turn off the battery breaker or battery disconnect switch.
To Restart the System:
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Turn on the battery breaker or disconnect.
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Turn on the DC solar disconnect to reconnect your panels.
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Turn on the inverter.
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Turn on the AC breaker to reconnect to your main panel or the grid.
Important: Always refer to your manufacturer’s manual. Some hybrid systems have specific instructions to avoid faults or damage.
Tip: Wait a few minutes after restarting. Some inverters need time to reinitialize and reconnect to the grid.
3. Look Up the Error Code
Check your inverter manual or visit the manufacturer’s website to find out what the code means. Most manuals include a troubleshooting chart with recommended actions.
Tip: Don’t have your manual? Let us know the brand and model, and we’ll help you find the right guide.
4. Check for Local Environmental Causes
Some error codes are triggered by temporary or seasonal conditions:
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Grid voltage changes during utility work or storms
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Overheating from direct sun exposure on very hot days
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Loose or shifting wires due to weather
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Moisture inside the inverter casing after freeze-thaw cycles
Tip: If the error goes away after a restart, it’s likely caused by a temporary issue.
Bonus Tip: Enable Monitoring Alerts
If your inverter supports online monitoring, make sure it’s turned on. Many systems can send automatic alerts to your email or app, helping you catch issues early and reduce downtime.
💡 Still have questions? Call us at 1-888-421-5354 or email hello@solarpowerstore.ca. To submit a support request, please use the form located below this article. If you'd like to speak with our team directly, you can also book a meeting here.