SolarEdge Monitoring Not Working: What to Check

By Olivier Beauchemin · Sourced from SolarEdge's support pages and installation guides, read October 9, 2026

Read the app first

SolarEdge's support page for an app that shows no production data puts the normal update interval at 15 minutes. The app dashboard shows when the last update arrived, and the Site Details page has a Last Updated field. Two of SolarEdge's instructions on that page decide your next step. If the last update is more than 24 hours old, check the inverter's communication. If you have never seen production data in the app at all, contact your installer, because the site may never have been set up to report.

A gap of an hour or two on a day with no other symptoms is not worth a phone call. Systems on a low-bandwidth cellular plan upload on a four-hour cycle by design, covered below. A last update from yesterday, with the inverter lit and the sun out, is a link problem until shown otherwise.

Three places it can break

Readings travel from the inverter, over a link your installer chose, to SolarEdge's servers, and from there to the app. Each stage fails in its own way.

• At the inverter. It is either producing or not, and either talking or not. The two are independent, so the first thing to settle is which one has stopped.
• On the link. SolarEdge's technical note on storing and sending data lists four ways an inverter reaches the monitoring platform: Ethernet, Wi-Fi, a cellular plug-in, and ZigBee through a SolarEdge gateway. A new router, a changed Wi-Fi password, a power cut, or a cellular carrier retiring a network each break one of these without touching production.
• In the cloud. The inverter stores readings and sends them when it can. If the servers are behind, the app catches up later and the day's total ends up correct.

What the inverter lights mean

Screenless inverters (Home Wave, Home Hub and other SetApp models)

These have three LEDs at the bottom of the unit. SolarEdge's indicator page and its production-issues page give the same reading for each colour. Green lit means the system is producing power. Blue lit means the system is communicating, sending data to mySolarEdge and the monitoring platform. Red lit means a system error, and SolarEdge's homeowner page says that is the case to hand to the installer, who can check the system remotely.

Green on and blue off is the pattern this page is about. The panels are making power and the data is not leaving the house. Green off in daylight with blue on is the opposite problem, a production fault with monitoring intact, and the app will show it. No LEDs lit at all means the inverter is not responsive, and SolarEdge's Wi-Fi guide says to stop troubleshooting and contact the installer.

Inverters with a screen (HD-Wave and older A-series)

Three LEDs sit to the right of the display. In SolarEdge's HD-Wave installation guide, green on means producing, green blinking means standby while the inverter waits for its working voltage, and green off means not producing, which covers night, the ON/OFF switch set to OFF, or an error. Yellow blinking means monitoring information is arriving from a power optimizer or the inverter is shutting down. Red on means an error, and red blinking means the inverter is being shut down.

To reach the status screen, SolarEdge's page says to quickly press the green button on an A-series inverter, or tap the Up or Down sensor on an HD-Wave, and step through the screens. The main status screen carries three things worth reading. Pac[W] is the AC power being produced right now, and a non-zero figure in daylight settles the production question. P_OK followed by two numbers means the inverter is paired with its optimizers and at least one is sending data, and the numbers are how many are paired. S_OK means the connection to the SolarEdge monitoring platform is working.

When S_OK is missing, step on to the server screen. It names the connection type (LAN, Wi-Fi, Cell, or ZigBee) and a status. For Ethernet it also shows a string of eight 1s and 0s, and SolarEdge's guide assigns each position a meaning: the first digit is the physical cable, the second is DHCP, the third is a ping to your router, the fourth is a ping to the internet. A 0 in the first position is a cable. If only the fourth position shows 0, your internet service is the problem. For a cellular plug-in the same screen shows the carrier name and a signal figure from 0 to 5, where 0 is no signal and 5 is excellent.

Fixing the link: what SolarEdge lets an owner do

Wi-Fi

On SetApp-enabled Home Wave and Home Hub inverters, SolarEdge's Wi-Fi troubleshooting guide puts the fix in the owner's hands. In the mySolarEdge app, open the menu, choose Inverter Communication, tap Configure Wi-Fi at the bottom of the screen, pick your network and enter the password. Then look for the blue LED and for S_OK under the app's Communications or Status screens. The same menu has an Inverter Communication view that shows the internet connection details with a status message when the connection has failed, and an Inverter Status view with production, voltages and communication status. SolarEdge's homeowner page names the causes it sees for a lost connection: an internet provider switch, a changed Wi-Fi password, or a recent blackout, and it says the connection can be restored from the app by scanning the QR code on the inverter.

Ethernet

Check that the cable is seated at both ends and that the port light on your router is lit. If the inverter has a screen, the eight-digit string above tells you which hop failed. A router replaced since installation is the first suspect. SolarEdge's alert troubleshooting note puts the same items in order for an inverter that has gone quiet: router connected, inverter connectors secure (RJ45 cable, Wi-Fi antenna or module), router password or firewall unchanged if the router was replaced, and the inverter's AC breaker not tripped.

Cellular plug-in

SolarEdge's cellular guide for North America says its LTE modems work only on the T-Mobile LTE network, and that the older CDMA and GSM modems are discontinued and no longer function because those networks were shut down. Systems installed with one of those modems went silent for good when the carrier switched the network off, and only a modem swap or a change to Wi-Fi or Ethernet brings it back. A working LTE modem should check in with the server about every 15 minutes. New SIMs can take 24 to 48 hours to register with the carrier. Metal roofing or an inverter in a basement can cost enough signal to break the connection. Every step in that guide beyond reading the status screen involves opening the inverter with the AC off, which is installer work.

ZigBee through a SolarEdge gateway

With ZigBee, the inverter talks wirelessly to a small gateway plugged into your router by Ethernet. SolarEdge's ZigBee guide says the inverter should report every 15 to 30 minutes, and that longer gaps point to range or interference. An amber LED on the gateway flashes once every five seconds for each inverter it is connected to. S_OK disappears on the inverter when the gateway loses the internet, so a dead gateway and a dead router look the same from the inverter. The guide also says SolarEdge no longer supports the older gateways without SolarEdge branding and recommends replacing them or changing communication type.

When the data comes back, and when it does not

The inverter does not drop a reading because the internet is down. SolarEdge's technical note says it stores data and erases a record only after the monitoring platform confirms it was received. If a link outage is shorter than the inverter's storage, the problem is cosmetic, and the missing days fill in once the connection returns.

That storage is small. The note gives the worked example for inverters on CPU firmware 3.x or 4.x: a single-phase inverter with 20 optimizers on Ethernet holds about 28 days before new data overwrites old. Older firmware holds less. For CPU 2.0400 and later the rule is 530 days divided by the number of optimizers, so 24 optimizers gives 22 days, and 50 optimizers gives 10 days. Any day pushed out of that window never reaches SolarEdge's servers.

Lag has a stated cause too. The note explains the lag you may see. On Ethernet, Wi-Fi and full-bandwidth cellular, readings are sampled every five minutes and uploaded continuously. On a low-bandwidth cellular connection, readings are sampled every 15 minutes and uploaded every four hours, and only the inverter carrying the modem and its own devices are monitored.

The installer-only parts

SolarEdge's page on creating a monitoring account sets out who does what. SolarEdge offers the monitoring platform to installers. The installer creates the site, is your portal administrator, invites you by email and sets your access level: Dashboard, Dashboard and Layout, or Full Access. SolarEdge does not create or monitor any sites, and SolarEdge technicians cannot add users to the portal. The same page tells owners to clarify whether the installer is providing monitoring services at all, and says that is set out in the installation contract.

Two settings in that invitation matter later. SolarEdge's site administration guide shows a user record with a Monitoring Access field and an Expose to alerts notifications checkbox. Full Access is the only level that includes the charts, reports and alerts tabs. If the box was never ticked, the platform's own alerts go to the installer and not to you.

The alerts themselves are narrow. SolarEdge's alert troubleshooting note describes "No communication with the inverter", raised only after at least three hours of silence, "No communication with the site" when nothing on site is communicating, and "No communication with power optimizer" when one optimizer stops sending data. A homeowner who has never received one of these has either a healthy system or an account the alerts were never exposed to, and the user record decides which.

Commissioning on a screenless inverter is done with SetApp, SolarEdge's installer application, and the cellular and ZigBee guides above are written for a technician working inside the open inverter. Changing the communication type, replacing a modem or a gateway, and re-pairing optimizers sit on the installer's side of the line.

If the installer is gone

With the portal administrator out of business or unreachable, the account path above has no one at the other end. Three things SolarEdge publishes still apply. The system owner support page offers a service center login where owners open and track support cases, a case status check, and a chat agent. A site owner with admin rights can add and remove site users and site owners, and can grant a third party View Only or View/Edit access through Associated Accounts. SolarEdge's homeowner page provides a template for moving a system to a new owner when a house is sold, and says a change of login email goes through the installer creating a new account. Open a case, explain that the installer no longer exists, and ask for the site to be reassigned to you as owner with Full Access. SolarEdge's support contact section asks for the inverter's model and serial number, the error shown on the display or app, and the communication method, so have those ready.

No data is not the same as no production, and a guarantee cares

A production guarantee promises a number of kilowatt-hours over a contract year, and the comparison is made against a monitoring record. For a SolarEdge system that record is SolarEdge's cloud figure, because it is what the system's own monitoring produced. An outage that stays inside the inverter's storage window costs nothing, since the days fill in. One that runs past it removes those days from the only record both sides accept, and nobody can later say what the system made.

That gap cuts both ways. A system that underproduced during those weeks has no shortfall on paper. One that produced well has no production on paper, and a guarantee measured from the record will count it as zero or as missing, depending on the contract's wording. Read the exclusions in your agreement for what it says about communication outages and about who is responsible for keeping the monitoring online. The mechanics of the guarantee itself are in Solar Production Guarantees, and the ways a system can quietly underproduce while every light is green are in Why Is My Solar System Underperforming?.

What OwlWatt does for a SolarEdge system

OwlWatt reads your site's daily production from SolarEdge's monitoring API after you authorize it from your own SolarEdge account, so you do not share a password. The history is backfilled from your install date and then pulled every day, so each day's kilowatt-hours sit in a record outside the installer's and SolarEdge's dashboards. OwlWatt watches the site's last-update time in SolarEdge's record and raises a not-reporting alert when more than a day passes without an update, which is the moment to go look at the blue LED. Your power optimizers are listed by serial number, and any that SolarEdge's device list marks inactive are flagged. Each day's production is compared with a weather-modelled expectation for your roof, and the result is tracked by contract year against the guaranteed figure, so a claim rests on a dated record rather than on memory.

Two limits apply. SolarEdge's public API gives no per-panel power on any tier, so OwlWatt shows whether each optimizer is reporting but not what it made. And OwlWatt does not repair the link. It tells you the day the record went quiet, so the outage ends before it outruns the inverter's storage. How that compares with repair memberships and vendor plans is in Solar Monitoring Plans Compared.

Related Guides

• Solar Production Guarantees: What They Promise and How to Enforce One
• Why Is My Solar System Underperforming?
• Solar Monitoring Plans Compared: Otovo, Enphase, Omnidian, SunStrong
• OwlWatt on Enphase vs SolarEdge: What Differs and Why