Enphase Panel Status Code Index
Every Enphase microinverter panel status code from the Enlighten portal — what it means, the most likely cause, and what to do. Enphase is a microinverter system: each panel has its own inverter and reports its own status code, unlike string inverter systems.
If your Enphase microinverter is showing a fault code and you need expert diagnosis, a remote diagnostic identifies the cause and recommends the fix — usually within 30 minutes.
Book Enphase diagnosis — £75 → How diagnostics workPanel status codes when the microinverter is not generating power. Some are normal (night, low light), others indicate a fault.
Power too low
Generating below minimum
Sleeping (night / low light)
Normal nighttime state
Gridless
No grid connection
Not communicating / Unknown
⚠ Offline
Status codes related to communication between the Envoy gateway and microinverters, and to internet connectivity.
Envoy offline
⚠ No Envoy comms
Microinverter not discovered
Device discovery failed
PLC communication error
Power line signal lost
Grid voltage and frequency events that cause the microinverter to disconnect as a safety protection.
Grid frequency out of range
Frequency protection trip
Grid voltage out of range
Voltage protection trip
G98 / G99 trip
Protection disconnect
Status codes indicating hardware faults in the microinverter unit itself.
DC voltage too high
Panel voltage high
Over temperature
Microinverter overheating
Microinverter fault
⚠ Hardware fault
Status codes related to the Enlighten monitoring portal and data reporting.
System not reporting
Portal data gap
Array count mismatch
Inventory mismatch
Enphase releases firmware updates that may introduce new status codes. If your code isn't listed, share the exact status from your Enlighten system map and we'll identify it.
Envoy power cycle, PLC signal checks, and microinverter replacement indicators.
Broadband LED status, router checks, and port 443 requirements.
Shading diagnosis, soiling checks, and individual panel hardware faults.
Enphase status code questions
Panel status codes appear in the Enlighten Manager portal at enlighten.enphaseenergy.com and in the Enphase app. Click on any panel in the system map to see its current status and code. Panels showing in yellow are warning status, red indicates a fault, and grey means the panel is not reporting. Take a screenshot of the full system map showing all panel statuses before contacting support — this is the most useful diagnostic information we can have.
A single panel showing as not communicating usually means that specific microinverter has lost power line communication with the Envoy gateway, or the microinverter itself has stopped responding. First, check whether the panel is shaded (shaded panels can drop to zero without a fault). If it is unshaded and neighbouring panels are producing normally, try a power cycle — turn the AC isolator off, wait 2 minutes, then back on. If the panel still shows unknown after a full day of generation, the microinverter unit may need replacement.
The Envoy goes offline when it loses its internet connection. Check the broadband LED on the Envoy — a solid green LED means internet is connected. A flashing amber LED means connectivity is lost. Check your router and ethernet cable (or WiFi signal if using wireless). Power cycling the Envoy by unplugging it for 30 seconds usually restores the connection. If the Envoy's broadband LED remains off, check that your router is functioning and that port 443 outbound is not blocked.
Yes, many Enphase microinverter faults can be initially assessed through the Enlighten monitoring platform. STS offers remote diagnostics from £75, and if an on-site visit is needed, our engineers are experienced with the full Enphase product range.
Got a panel status code and need it diagnosed?
Share the exact status codes from your Enlighten system map, which panels are affected, and what the system is doing. We'll identify the cause and tell you whether it needs a remote settings fix or a site visit.