SolarEdge Inverter Lights and What Each LED Color Means

Every SolarEdge inverter reports its health through colored lights on the front of the unit — no app or login required. The catch is that SolarEdge has used two different LED schemes over the years, so a red light means something slightly different depending on your model. This is the complete reference: find your inverter type below, match what you see, and you will know in seconds whether your system is fine, waiting, or needs attention.

Quick Answer

On current display-less SolarEdge inverters, one status LED shows three colors: green means the system is producing power, blue means it is communicating with the monitoring platform and optimizers, and red means there is a system error. On older models with an LCD screen, three separate LEDs do the job: green for power production, yellow for communication and shutdown states, and red for faults. Any red that stays on — on either scheme — means the system needs attention; start with the monitoring platform to read the exact error code.

Newer Models: One LED, Three Colors

Current SolarEdge residential inverters without a display use a single status light near the bottom of the unit that can show green, blue, or red. According to SolarEdge’s official LED guide, the meanings are:

• Green ON — the system is producing power. This is the normal daytime state.
• Green blinking — standby or startup. The inverter has AC power but is not producing yet — normal at dawn, dusk, just after switch-on, or while it self-checks after a restart.
• Green OFF — the system is not producing. Expect this at night, when the ON/OFF switch is OFF, or when an error has stopped production.
• Blue ON — the inverter is connected to the monitoring platform and communicating with the power optimizers. Blue plus green during the day is the picture of a healthy system.
• Blue OFF — no communication with the monitoring platform. If the system is producing (green on) but blue is off, check your internet connection and the communication setup — you are losing monitoring, not power.
• Red ON — a system error. Any red-on state means something is wrong; read the exact error code in the monitoring platform or app before doing anything else.

The LEDs work in combination with the red ON/OFF switch on the unit: flipping the switch OFF stops production and drops optimizer voltage to a safe level, and the LEDs will reflect the resulting state.

Older Models With LCD: Green, Yellow, Red

HD-Wave and earlier inverters with an LCD screen have three separate LEDs to the right of the display. Per the installation manuals:

• Green (power production): ON means the inverter is producing power; blinking means standby mode until working voltage is reached, after which it enters production; OFF means not producing — night mode, switch OFF, or an error.
• Yellow (communication and inverter shutdown): blinking means monitoring information is being received from a power optimizer, or that the inverter is being shut down.
• Red (fault): ON means an error has occurred — the manual directs you to the Errors and Troubleshooting section; blinking means the inverter is being shut down.
• All LEDs on — the inverter is being configured. This is normal during commissioning and firmware updates.

Common Light Combinations and What to Do

Green on, blue on, red off (newer models): everything is healthy. If the app disagrees, the app is the problem, not the inverter.

Green blinking only, during the day: the inverter is stuck in standby. Check the ON/OFF switch is ON, check the solar breaker, and check for a grid outage. Allow up to fifteen minutes after any grid event before worrying — reconnection is deliberately slow for safety.

Any red on: note the exact combination, then open the monitoring platform and read the error code. Try one controlled restart (switch OFF, wait five minutes, switch ON). If red returns, call your installer with the error code ready.

No lights at all, daytime: check the breaker and whether the house has power. A completely dark inverter in daylight with power available needs a professional.

All LEDs lit on an LCD model outside of commissioning: usually a configuration or firmware state — if it persists, contact your installer rather than interrupting it.

When to Call a Professional

Call your installer if any red light persists after a restart, the inverter produces nothing in clear daylight, the breaker trips, or you see physical damage, burning smells, or hear unusual noises. Never open the inverter: dangerous DC voltages can be present even when the lights are off, and there are no user-serviceable parts inside. Limit yourself to the switch, the breaker you are sure about, and the monitoring platform.

Frequently Asked Questions

Should any lights be on at night?

Usually not much. With no solar input the inverter sleeps; on newer models you may see nothing at all, or an occasional brief flicker. A red light at night that is still red at sunrise deserves investigation.

My inverter shows green but the app shows zero. Which do I trust?

Trust the inverter. Green means it is producing; the app problem is almost always the communication link — check the blue LED, your router, and the monitoring setup.

What does a blinking yellow light mean on my older SolarEdge?

Blinking yellow means the inverter is exchanging monitoring data with the power optimizers, or it is in the process of shutting down. Brief blinking during startup and shutdown is normal; persistent blinking with no production is worth a call to your installer.

Can I reset the inverter using the lights as a guide?

Yes: turn the red ON/OFF switch OFF, wait five minutes, turn it back ON, and watch the LEDs move from startup blinking to solid green (plus blue once communication resumes). If the sequence never completes, stop and call your installer.

Related Error Codes

• SolarEdge 2×19 — fault details and step-by-step fix
• SolarEdge 8×52 — fault details and step-by-step fix
• SolarEdge 29 — fault details and step-by-step fix

Sources: SolarEdge official LED status guide (solaredge.com/leds); SolarEdge HD-Wave installation guides (MAN-01-00250 / MAN-01-00306). LED layouts differ between display and display-less models — match your unit before diagnosing.