Is Your SolarEdge App Showing "Communication Error"?
- Jordan Barry
- Mar 22
- 3 min read
Living in the East Mountains, we know that heavy snow, high winds, and the occasional power flicker can knock your home’s Wi-Fi offline. Usually, when your internet comes back up, your solar inverter reconnects automatically.
But sometimes, it gets "stuck." If your mySolarEdge app is no longer showing daily production, or you see a "Communication Error," you probably just need to reconnect your system to your home’s Wi-Fi.
Here is a simple guide to getting your system back online—and how to know if you actually need a technical upgrade.
Step 1: Use the mySolarEdge App to Reconnect
If your inverter was installed in the last few years (the "SetApp" models without a screen), you can fix the connection right from your phone.
Stand next to your inverter: You’ll need to be within Bluetooth/Wi-Fi range.
Open the mySolarEdge App: Log in and tap on "Inverter Communication" in the menu.
Scan the QR Code: The app will ask you to scan the code on the side of your inverter.
The "P" Switch: Find the red rocker switch on the bottom of the inverter. Toggle it to the "P" position and release it immediately. This puts the inverter into "Pairing Mode."
Configure Wi-Fi: Your phone will connect to the inverter’s internal Wi-Fi. Select your home’s Wi-Fi network from the list, enter your password, and hit "Join."
Note: Most solar inverters only work on 2.4GHz Wi-Fi bands. If you recently upgraded to a high-speed 5GHz router, your inverter might not see the network.
Why It Might Not Reconnect: The "Cell Kit" Issue
Did you know many systems in Tijeras were installed with a Cellular Kit instead of Wi-Fi? This uses a small antenna (usually sticking out of the bottom) to send data over cell towers—just like a smartphone.
The 3G/4G Sunset Problem: If your system is older, it might be using a 3G or early 4G cell kit. As major carriers (like T-Mobile and AT&T) shut down these older networks, your solar system loses its "voice."
The Symptom: You try to connect to Wi-Fi, but the inverter won’t switch over, or it keeps looking for a signal that no longer exists.
The Fix: You may need a Cell Kit Upgrade to a modern 5G-compatible LTE card or a transition to a hardwired Wi-Fi antenna.
When to Call the Pros (Firmware & Upgrades)
Sometimes, a simple "reconnect" isn't enough. Here are two reasons you might need a visit from East Mountain Solar:
Firmware Updates: If your inverter hasn't talked to the server in a long time, its internal software (firmware) might be too outdated to recognize modern Wi-Fi security protocols. In many cases, only an authorized installer can perform a manual firmware "flash" to bring the brain of the system up to date.
Hardware Upgrades: If your cell antenna is dead or your internal Wi-Fi card has failed due to a power surge, the cover of the inverter has to be removed. Do not open the inverter yourself—there are high-voltage DC components inside that can be lethal even when the sun is down.
My Installer Went Out of Business—Can You Help?
Yes! Many homeowners in the East Mountains were left "orphaned" when companies like NM Solar Group or ADT Solar closed their doors.
Because we are SolarEdge Certified, we can step in to perform warranty repairs, firmware updates, and communication upgrades even if we didn't perform the original installation.
Need a hand getting back online? If you've tried the app and your system is still dark, don't leave your investment unmonitored.
[Book a Repair Diagnostic Online] or call us today. We’ll get your SolarEdge system communicating and ensure you’re getting every kilowatt-hour you paid for.
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