The short answer: The inverter lost its internet connection or needs a restart. Check the blue LED — if it's off or blinking red, the inverter isn't communicating. Here are the three most common causes:
Use mySolarEdge app → Inverter Communication to reconnect to new network.
Power cycle: OFF switch → wait 5 min → DC off → AC off → restart in reverse.
Restart router. Inverter reconnects automatically once internet is restored.
Red LED on, repeated faults, or optimizers not reporting? Contact us — we diagnose remotely before sending a tech..
SolarEdge inverters have 3 LEDs — Blue (communication), Green (production), Red (error). Read all three together for the full picture. The inverter is usually mounted on an exterior wall, in the garage, or utility room.
Inverter is connected to your Wi-Fi and actively sending data to the SolarEdge monitoring servers. App should show current production data within 15 minutes.
Inverter has no internet connection. Your panels may still be producing (check the green LED) but data is not reaching the app. Most common cause: Wi-Fi password changed, router restarted, or inverter needs a power cycle.
System is actively generating solar power. If the green LED is on but the blue is off, your panels are producing but not reporting. Fixing the communication issue is all that's needed.
Inverter is connected to the grid but not producing. Normal at night, on very cloudy days, or when snow covers panels. If this happens during a sunny day, try a power cycle.
Fault detected. First try a full power cycle — this clears many temporary faults. If the red LED returns after restarting, there's a persistent error code on the LCD (if present) or in the app. Do not repeatedly reset — call us.
Normal at night. During the day this usually means the inverter lost power — check the AC breaker in your main panel and the DC disconnect on the inverter. If breaker trips again after reset, call us.
Answer a few quick questions and we'll tell you exactly what to do for your situation.
Takes about 2 minutes — answer each question to find your solution
This is the #1 fix for SolarEdge communication loss when internet is working fine. Follow the exact order:
Your inverter is fine. Once internet is restored, it will reconnect automatically:
The Wi-Fi reconnection on SolarEdge requires the mySolarEdge app or SetApp, and can be tricky on older firmware versions. We do this regularly and can walk you through it or schedule a quick visit.
SolarEdge inverters occasionally go offline briefly during automatic firmware updates, which can take up to 2 hours. If it has been less than 48 hours:
An inverter offline for more than 2 days after trying a power cycle likely has a persistent communication failure — possibly a faulty Wi-Fi module, firmware corruption, or hardware issue requiring SolarEdge support intervention.
We have installer-level access to the SolarEdge monitoring platform and can run remote diagnostics and open support tickets with SolarEdge on your behalf.
The LCD error code tells you exactly what's wrong. First, try a full power cycle — many fault codes clear on restart. If the code returns, here are the most common ones:
Check these in order:
SolarEdge updates data every 15 minutes. A short delay is normal:
Go check the inverter's blue LED. If it's off, you have a communication issue — go back and use the "Blue LED is off" path in the troubleshooter. If the blue LED is on but the app is still stale:
Illinois winters and cloudy stretches can cut solar production by 30–50% vs summer peaks. Compare to the same week last year — not last month. This is normal and expected.
If the drop seems larger than weather alone explains, dirty panels may be a factor. Learn about our panel cleaning service →
A gradual production decline over weeks or months is the classic sign of dirty panels. Bird droppings, pollen, and road dust can reduce SolarEdge output by 15–25%.
View Panel Cleaning Services →A sudden production drop could mean a failed optimizer, a tripped breaker, storm damage, or an inverter fault. Check the Layout tab in the mySolarEdge app to see which panels stopped producing.
Call us — we pull up real-time system data through the monitoring platform before stepping foot on the roof.
Multiple optimizers offline (not the whole inverter) often points to a string connection issue or a partial wiring problem:
If all or most optimizers disappeared at once, the problem is with the inverter itself — not individual optimizers. This is a system-level issue that requires professional diagnosis.
A full power cycle — not just flipping the switch — is the most effective DIY fix for most SolarEdge communication issues. The order matters.
Find the P/I/O switch on the inverter (labeled P for Pair, I for On, O for Off). Turn it to the O (OFF) position. If your inverter has an LCD, wait until it shows the DC voltage dropping — the screen will say "VDC Lowering, Do Not Disconnect."
The DC disconnect is the black rotary dial on the front of the inverter. Turn it to the OFF position (usually clockwise or to the lock symbol). This disconnects the solar panels from the inverter.
The AC disconnect is typically outside near your utility meter, or it may be the solar breaker in your main electrical panel. Turn it to OFF. This cuts power from the grid to the inverter completely.
After waiting 5 minutes: Turn the AC disconnect ON first → then turn the DC disconnect ON → finally turn the P/I/O switch to I (ON). This order ensures the inverter sees the grid before connecting the solar panels.
The inverter takes 5–10 minutes to fully boot, connect to the grid, and re-establish internet communication. Watch the LEDs: the green LED should activate first (grid detected → production starting), then the blue LED should turn solid (communication restored).
Check the mySolarEdge app after 15 minutes — it may take up to 1 hour to fully backfill any data missed during the outage.
Not usually. If the green LED is still on, your panels are producing power — you've only lost monitoring visibility. The blue LED being off means the inverter can't send data to the SolarEdge cloud, but power generation continues independently. Confirm by checking your utility meter or looking at the green LED directly on the inverter.
The key difference: SolarEdge uses one central inverter with power optimizers on each panel. When the inverter goes offline, all panels stop reporting at once. Enphase uses individual microinverters — panels can fail independently. For SolarEdge, most communication issues trace back to the single inverter and a power cycle or Wi-Fi reconnection usually fixes it. Individual optimizer issues require checking the Layout tab.
The app updates every 15 minutes under normal operation. After reconnecting from an outage, SolarEdge needs to backfill stored data — expect roughly 1 hour per day of offline time. The data is stored locally in the inverter and is never permanently lost. If after 24 hours the historical data still shows gaps, call us — we can request a data push from SolarEdge's server side.
A power optimizer is a small device attached underneath each solar panel. It maximizes the output of each individual panel and communicates with the central inverter. Optimizers can stop reporting due to: losing pairing with the inverter (most common), a wiring or connector issue, physical damage, or actual hardware failure. They carry a 25-year warranty from SolarEdge. An optimizer that stops reporting for more than 48 hours after an inverter power cycle likely needs replacement or re-pairing.
A standard power cycle is safe and appropriate when: the blue LED is off (communication loss), the app shows no recent data, or a green LED is blinking during daylight with no obvious reason. Do NOT reset yourself when: the red LED shows a ground fault or isolation error (GFDI/ISO codes), the AC breaker trips repeatedly, or there is visible damage to the inverter or wiring. These indicate safety-critical faults that require a licensed electrician.
Yes. SolarAbility is a NABCEP-certified installer with access to the SolarEdge monitoring platform's installer tools. We service SolarEdge systems across Illinois regardless of original installer — including systems from companies that closed or stopped operating in the state like SunPower, Vivint Solar, and Pink Energy.
We service SolarEdge systems across all of Illinois — including orphan systems. Call us and we'll diagnose remotely through the monitoring platform before sending a tech.
Mon–Fri 8am–6pm · Sat by appointment · All of Illinois
(312) 312-5337