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Solid red LED

Solid red LED — System error or shutdown

SolarEdge · ESS Systems

What does Solid red LED mean?

A solid red LED on the inverter/charger indicates a more critical system error or that the unit has shut down.

Common Causes

  • Internal system fault.
  • Overload condition.
  • Communication loss with other system components.
  • Overheating.

Repair Steps & Checklist

Click steps to track your progress.

  1. 1

    Check the system status on the CCGX or VRM Portal for specific error codes or messages.

  2. 2

    Ensure all cable connections are secure.

  3. 3

    Verify that the unit is not overheating and has adequate ventilation.

  4. 4

    Restart the system by turning off the AC input and DC input, waiting 30 seconds, and then turning them back on in the correct order (DC first, then AC).

Browse all codes in this manual (12)
Verified technical data. Last updated: April 2026

Related Faults

Battery discharging then charged every nightBattery discharging then charged every night — Potential Sustain protection or SOC settingESS Relay test PendingESS Relay test Pending — Feed-in disabled until test completesInput current-limit settingInput current-limit setting — Loads must be on AC-out for limiter to work
Source: SolarEdge ESS Systems
Open Manual (Page 11)Search more codes in this manual