SolarEdge Error Codes & Fault Codes: Troubleshooting Guide
- Sarah Lozanova
- Oct 22
- 8 min read
Table of Contents
If your SolarEdge inverter isn’t producing power or is flashing unusual alerts, the first clue is often in its lights or display. A SolarEdge green light blinking typically means the system is generating power, but when the green light disappears or a red light appears, you may see unfamiliar SolarEdge fault codes on the inverter or in the monitoring app.
These codes are your inverter’s way of flagging issues—sometimes as simple as grid voltage fluctuations, other times signaling more serious faults that require attention. In this guide, we’ll explain the most common SolarEdge error codes, what a blinking green light really indicates, when to try a reset, and when to contact SolarEdge customer service or a solar repair professional for help.
Common SolarEdge Inverter Problems
Homeowners often first notice inverter issues when their solar system stops producing as much power as expected. Common symptoms include:
⚠️ Loss of solar production or sudden system shutdowns
🔴 Red or orange status lights on the inverter
📱 Alerts in the SolarEdge monitoring app pointing to fault conditions
One of the most common questions is about the SolarEdge green light blinking. A blinking green LED typically indicates that the inverter is functioning properly and generating AC power. The blink rate corresponds to the percentage of output: faster blinking means higher production. A solid green light can also indicate normal operation, while a red LED typically signals a fault that needs investigation.
When symptoms like red lights, shutdowns, or app alerts occur, they are often tied to specific SolarEdge error codes or fault codes. These codes help pinpoint the underlying issue—such as grid voltage fluctuations, isolation faults, or overheating. Understanding what these fault codes mean is the first step toward accurate SolarEdge inverter troubleshooting and deciding whether the problem can be resolved with a simple reset or requires professional service.
Understanding SolarEdge Error Codes
When your SolarEdge inverter shows fault codes or blinking lights, it’s giving you diagnostic clues about system problems that can affect performance and safety.
What Fault Codes Mean
When your SolarEdge inverter stops working or flashes a warning, it’s usually communicating through a fault code. These codes are your inverter’s way of diagnosing issues in the system. Each SolarEdge error code points to a specific problem, such as insulation faults, arc detection, or overheating.
For example:
Isolation faults (like SolarEdge error code 03x9a) often signal grounding or wiring problems.
Arc fault detection (such as error code 18xC) warns of potentially dangerous sparks that need immediate attention.
Over-temperature alerts (for instance, SolarEdge 18x75 fault code) indicate the inverter is running too hot and needs cooling before restarting.
By paying attention to these SolarEdge fault codes, you can understand whether the issue is minor and can be reset, or if it requires help from SolarEdge customer service or a professional solar repair company.
Write down or take a screenshot of the SolarEdge error code before resetting your system. This helps SolarEdge customer service or a solar repair company diagnose the issue more quickly.
If you're unsure how to reset your system or what a particular SolarEdge inverter error code means, SolarEdge provides detailed fault code resources in its monitoring app and on its support website. For more complex issues or if your original installer is no longer in business, you can work with a solar repair service like GreenLancer to safely restore your system to full operation.
SolarEdge Inverter Lights Explained
The LEDs on the inverter provide a quick visual check of its operational status. Note that not all SolarEdge inverter models have indicator lights, but many do, especially legacy models and some current residential units.
How to Reset a SolarEdge Inverter Safely
Sometimes a simple reset clears temporary SolarEdge inverter problems like grid fluctuations or overheating. Here’s the reset sequence:
Turn off the AC disconnect (near your main panel or utility meter).
Turn off the DC disconnect (on the inverter or near the array).
Wait at least 5 minutes for the inverter to power down fully.
Turn the DC disconnect back on.
Turn the AC disconnect back on.
Wait while the inverter reboots and status lights stabilize.
When it’s usually safe to reset:
Grid voltage too high or too low (codes like 18x38, 18x37).
Over-temperature shutdown (18x75) after cooling.
⚠️ When NOT to reset:
Arc faults (18xC), isolation faults (03x9a, 18x86), or ground current errors (18x3D). These SolarEdge fault codes signal serious issues that need professional help.
Where to Look Up SolarEdge Error Code Definitions
When you're dealing with SolarEdge inverter problems, pinpointing the meaning of specific alerts is critical. Fortunately, there are several reliable places to look up your SolarEdge error messages and understand what your system is trying to tell you.
Resources to Decode SolarEdge Fault Codes
Your SolarEdge inverter manual: Includes a section listing fault codes and basic troubleshooting tips, manuals are model-specific.
The SolarEdge support portal: The SolarEdge website offers a searchable knowledge base with up-to-date code definitions and instructions
The SolarEdge monitoring app guide: When SolarEdge fault codes appear, the app often displays a short description of the issue—whether it's an optimizer fault, firmware issue, or voltage alert. You’ll also receive system notifications for urgent problems.
SolarEdge Users' Facebook Community: Support and advice from other SolarEdge users, which can be an option if SolarEdge customer support isn't sufficient for troubleshooting.
By using these resources, you can better understand what your SolarEdge error codes mean and whether you can handle them on your own or if it's time to call for help.
Warranty, Repairs & When to Call for Help
Most SolarEdge inverters come with a 12-year limited warranty, with options to extend to 20–25 years. This covers many hardware failures that trigger SolarEdge error codes.
If your SolarEdge inverter shows fault codes or a blinking green light, it may need attention. Learn what common SolarEdge error codes mean, when to reset, and when to call for service. can help with troubleshooting, warranty claims, or full inverter replacement.
🚨 Don’t ignore persistent SolarEdge inverter fault codes. Even if your system still produces some power, delaying repairs can shorten equipment life, reduce efficiency, and create safety hazards.
⚠️ When You Should Not Reset a SolarEdge Fault Code
Some SolarEdge inverter fault codes point to more serious issues, like ground faults, arc detection, or hardware failures. In these cases, a reset might clear the error message temporarily without fixing the underlying problem, which could make things worse over time.
Do NOT attempt to reset the inverter if:
You see persistent codes like SolarEdge fault code 33x (ground/insulation fault)
You smell burning or hear unusual noises from the inverter
The inverter shuts down repeatedly after each reset
The SolarEdge monitoring app shows ongoing alerts after rebooting
If you're unsure how to fix a SolarEdge inverter error code or fault, or you’ve already tried a reset without success, it’s best to contact a qualified technician. GreenLancer offers solar repair services nationwide and can help homeowners get support for orphaned systems or persistent SolarEdge inverter troubleshooting issues.
Accessing SolarEdge Support for Inverter Troubleshooting and Warranty Help
If you're dealing with SolarEdge inverter problems, the manufacturer offers several tools to help homeowners identify, monitor, and resolve issues. From checking SolarEdge inverter fault codes to verifying your warranty coverage, the SolarEdge platform makes it easier to stay informed and take action when needed.
Using the SolarEdge Monitoring App to Track Inverter Error Codes
The SolarEdge monitoring app is one of the most effective tools for diagnosing and tracking SolarEdge inverter problems. If you haven’t set it up yet, it’s highly recommended—especially if you're seeing SolarEdge error codes or suspect reduced system performance.
Here’s what you can do with the app:
Check live system status: The app shows how much energy your system is producing and highlights any modules not functioning correctly.
View SolarEdge inverter fault codes: If your inverter detects a problem, you’ll usually see a summary or full error message in the app.
Monitor inverter history: Track output trends, past faults, and performance data over time.
Receive alerts: The app can notify you automatically when something changes, like when the inverter stops reporting or a module underperforms.
For added SolarEdge monitoring app help, its website includes a user guide and video walkthroughs to explain how to navigate system views, check error messages, and enable alerts.
How to Verify Your SolarEdge Inverter Warranty After a Fault
If your SolarEdge inverter fault code points to a hardware failure—or if the inverter doesn’t recover after a reset—it may be time to check your warranty coverage. Most SolarEdge inverters come with a 12-year limited warranty, and some models offer optional extensions or additional coverage if paired with panel-integrated systems.
How to confirm your SolarEdge warranty status:
Locate your inverter’s serial number: It’s usually printed on a label on the side of the inverter.
Visit the SolarEdge warranty lookup page to confirm if your unit is still within the warranty window using your serial number.
Check your system registration: If your system was installed by a certified partner, it may already be registered, but you can confirm or update the details in your SolarEdge monitoring account.
Prepare for a warranty claim: You’ll need the inverter’s serial number, installation date, and a description of the problem (including any SolarEdge error codes shown on the app or display).
SolarEdge’s support site offers step-by-step guidance for claims, as well as direct contact info if you need to reach their technical team. And if you’re unable to complete the warranty process or if the installer is no longer available, GreenLancer can complete U.S. solar repairs for your system.
When to Call a Solar Repair Service for SolarEdge Inverter Troubleshooting
Some SolarEdge inverter problems can be resolved with a simple reset or by reviewing fault codes in your monitoring app. But when your system continues to malfunction—or you’re left without installer support—it’s time to bring in a professional. A qualified solar repair service can handle deeper issues, from SolarEdge inverter troubleshooting to full system diagnostics.
What to Do If You Have an Orphaned SolarEdge System
If your original installer has gone out of business or won’t respond to service requests, you may be dealing with what’s known as an orphaned SolarEdge system. This situation is more common than many homeowners realize, especially as the solar industry evolves. Without installer support, getting help for a persistent SolarEdge inverter fault code or warranty claim can feel overwhelming.
Don’t ignore red status lights or alerts in your monitoring app—those signs can mean a serious issue that may reduce your system’s efficiency or cause long-term damage. When you're not sure where to turn, it’s time to connect with a trusted repair provider.
GreenLancer Can Help With SolarEdge Inverter Repairs
GreenLancer offers professional SolarEdge inverter repair services for homeowners across the U.S., including systems no longer supported by the original installer. Whether your issue involves repeating fault codes, no power output, or strange inverter behavior, we can help.
Our nationwide solar repair network provides:
Inverter diagnostics using brand-specific tools
SolarEdge inverter troubleshooting for fault codes like 18x or 33x
Help with SolarEdge warranty claims and replacement options
Support for monitoring connectivity and rapid shutdown errors
Frequently Asked Questions (FAQ)
Answering these common questions can help with your SolarEdge inverter troubleshooting and get your system back up and running.
What does a blinking green light on the inverter mean?
A SolarEdge green light blinking typically means the inverter is operating correctly and generating AC power. The speed of the blink corresponds to the level of power output. A red light, on the other hand, signals a fault condition that requires investigation.
How do I safely reset my SolarEdge inverter?
To reset, first turn off the AC disconnect, then turn off the DC disconnect. Wait at least five minutes for the inverter to power down fully. Then, turn the DC disconnect back on, followed by the AC. This is typically safe for minor issues like grid voltage fluctuations, but never reset for isolation or arc faults.
Where can I look up specific SolarEdge error codes?
You can look up SolarEdge error codes using the SolarEdge monitoring app, the inverter's manual, or the searchable knowledge base on the SolarEdge support portal. Always write down the SolarEdge fault codes before attempting a reset to help with diagnostics.
When should I contact professional SolarEdge support?
If you encounter persistent fault codes (such as arc or ground faults like 18xC or 33x), smell burning, or if the inverter shuts down repeatedly after a safe reset, contact a solar repair service or SolarEdge customer service immediately.
Are there common SolarEdge inverter problems I can fix myself?
Temporary issues like minor grid voltage fluctuations (codes 18x37, 18x38) or over-temperature shutdowns (18x75) can often be resolved with a safe reset. However, any recurring or serious SolarEdge fault codes should be checked by a professional technician.