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SolarEdge Inverter Error Codes: Complete Fault Guide for SE Series

Quick Answer

SolarEdge inverters display fault codes on the LCD screen and report them through the SetApp mobile app or the monitoring portal. The most critical codes are 18XF5 (DC injection fault), 18XB5 (internal hardware failure), and 18XB7 (AC contactor fault) - all require professional service.

SolarEdge inverters display fault codes on the LCD screen and report them through the SetApp mobile app or the monitoring portal. The most critical codes are 18XF5 (DC injection fault), 18XB5 (internal hardware failure), and 18XB7 (AC contactor fault) - all require professional service. Grid-related codes 2XB (frequency out of range) and 3X2 (voltage out of range) often resolve on their own when the utility grid stabilizes. Communication codes 03X9A and 03X9B relate to the monitoring network and power optimizers.

SolaredgeInverter

About These Solaredge Inverter Error Codes

Reference hub for all SolarEdge SE series fault codes. Grid faults often self-clear; hardware faults require a certified solar technician. Use the linked articles for detailed diagnosis of each code.

Most Common Error Codes

Grid frequency out of range (2XB)40%
DC injection fault - hardware failure (18XF5)24%
Internal component failure (18XB5)14%
Communication or network fault (03X9A)12%
AC contactor failure (18XB7)10%

Symptoms You May Notice

  • Inverter not producing power
  • LCD shows a fault code
  • Red fault LED illuminated on inverter
  • Monitoring portal shows 0 kW production
  • SetApp showing error status

Tools Required for Diagnosis

SetApp (mobile app)SolarEdge monitoring portal accessMultimeter (for licensed electrician)

How to Identify Your Error Code

1

Check the inverter LCD display for the fault code

Check the inverter LCD display for the fault code. Also check the SolarEdge monitoring portal or SetApp for the error code and any historical fault log.

2

For grid codes (2XB or 3X2)

3

For hardware codes (18XF5, 18XB5, 18XB7)

4

For communication codes (03X9A, 03X9B)

5

If the fault code is not listed here or recurs frequently, note

Frequently Asked Questions

How do I read SolarEdge inverter fault codes?
Fault codes appear on the LCD display on the front of the inverter. You can also read them through the SetApp mobile app (connect your phone to the inverter's WiFi hotspot) or through the SolarEdge monitoring web portal. The monitoring portal also stores fault history so you can see past events.
My SolarEdge inverter shows a fault but restarted itself. Should I be concerned?
Self-clearing faults like 2XB and 3X2 are often caused by brief grid disturbances and are not a sign of inverter damage. However, if the same fault code recurs more than two or three times per month, contact your installer to investigate whether a settings adjustment or hardware issue is the root cause.
Can I reset a SolarEdge inverter myself?
Yes. You can safely turn off the AC disconnect (outside the house) and wait 5 minutes before turning it back on. This is the standard reset procedure and does not require opening the inverter. Do NOT open the inverter enclosure yourself - lethal voltages are present.
Does a SolarEdge fault mean my solar panels are damaged?
Usually not. Most fault codes relate to the inverter's internal electronics or the grid connection, not the panels themselves. Communication faults (03X9B) can indicate a failed power optimizer, which is a panel-mounted device, but the panels are typically unaffected.
How long is the SolarEdge inverter warranty?
SolarEdge SE series inverters come with a standard 12-year warranty, extendable to 20 or 25 years. If your inverter is within warranty, hardware fault codes (18XF5, 18XB5, 18XB7) should be covered by warranty replacement. Contact SolarEdge or your installer with the fault code and serial number.

Related Solaredge Inverter Error Codes

Code: 2XBSolarEdge Inverter 2XB Error Code: Grid Frequency Out of RangeCode: 18XF5SolarEdge Inverter 18XF5 Error Code: DC Injection FaultCode: 18XB5SolarEdge Inverter 18XB5 Error Code: Internal Hardware FaultCode: 18XB7SolarEdge Inverter 18XB7 Error Code: AC Grid Contactor FaultCode: 03X9ASolarEdge Inverter 03X9A Error Code: Communication FailureCode: 03X9BSolarEdge Inverter 03X9B Error Code: Power Optimizer Communication ErrorCode: 3X2SolarEdge Inverter 3X2 Error Code: AC Voltage Out of Range

Models Known to Experience HUB Errors

This repair applies to most Solaredge inverters with this error code. Common model numbers include:

SE7600H, SE10000H, SE6000H, SE3000H

Last verified for technical accuracy on March 14, 2026