SolarEdge Error Codes

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SolarEdge is a leading provider of smart energy solutions for solar power generation. Their inverters are known for their efficiency and reliability, but like any electrical device, they can occasionally experience problems. If you encounter an error code on your SolarEdge inverter, don’t panic! This comprehensive guide will provide you with a detailed understanding of SolarEdge error codes, their meanings, and troubleshooting steps to help you resolve the issue.

Understanding SolarEdge Error Codes

SolarEdge error codes are designed to alert users to potential problems with their solar power system. These codes can be displayed on the inverter’s LCD panel or accessed through the SolarEdge Monitoring Platform.

Error codes can be divided into two main categories:

  1. Hardware-related errors: These errors indicate a problem with the inverter’s hardware, such as a faulty component or a communication issue.

  2. System-related errors: These errors indicate a problem with the overall solar power system, such as a string fault, a grid fault, or an issue with the DC or AC wiring.

Common SolarEdge Error Codes

Here are some of the most common SolarEdge error codes and their meanings:

  • E014: AC frequency too high
  • E015: AC frequency too low
  • E016: AC phase imbalance
  • E018: Output overcurrent
  • E020: Grid fault
  • E025: Leakage current fail
  • E026: Fan fault
  • E037: DC overcurrent
  • E050: Arc fault detected
  • E056: Overtemperature
  • E150: Arc fault detected in the AC output
  • E151: Arc fault detected in the DC input

SolarEdge inverters

SolarEdge Error Codes

Error Code

Single Phase

 Error Code

Three Phase

 LCD Message Description Troubleshooting
N/A 1-4 Fan # Failure One of the fans is not working Check the Fan Health Status – Three

Phase Inverters on page 39. If required,

replace the fan (a replacement kit is

available from SolarEdge).
4, 5, 8, 12, 18-23, 39,42,45 45, 48, 50-53, 94, 108-111, 113 SW Error Internal software error If the fault persists, contact SolarEdge support or your solar provider.

GEM Energy support 1300 969 471.
N/A 112 Wrong AC Connection The lines connections

to the inverter are

incorrect, for example:

AC line 1 from the grid

is connected to line 2 at

the inverter so there is

no 120deg between L2

to L1 and L3 to L2 at the inverter side.

 Switch between L1 and L2 or L2 and L3 connections.
9, 13 N/A AC Current Stage Internal hardware

that measures AC

current has measured

substantially high

output currents. This

may occur because of

changes in the AC

voltage or a switching load near the site.

 If the fault persists:

  • Check the AC connection to the

inverter.

  • Check with the grid operator if a large

surge source or irregular load exists

near the site.

  • If the fault persists, contact SolarEdge support or your solar provider. GEM Energy support 1300 969 471.
10, 37, 38 76, 77, 90 Ground Current – RCD Ground current surge. The internal hardware that measures ground fault has measured substantially high ground currents. Ground faults may occur due to insufficient insulation to the ground. ELECTRICAL HAZARD. Do not touch insulated wires when the inverter cover is removed. Only a qualified electrician should handle this problem and only after taking proper precautions.

1 Turn the inverter ON/OFF switch to

OFF.

2 Wait five minutes for the input

capacitors to discharge.

3 Disconnect the AC breaker.

4 Disconnect the DC inputs.

5 Connect each DC string separately,

turn the AC and the inverter ON/OFF

switch to ON, until the error appears

for the faulty string.

 

  • Do not connect strings with a grounding fault to the inverter.
  • For further documentation about possible ground current error sources and solutions contact SolarEdge support.
  • A certified installer must fix the faulty string before connecting it to the inverter.
14 58/59/60 AC Voltage Too High (Line 1/2/3) AC voltage surge. The

High

internal hardware that

measures AC voltage

(Line 1/2/3)

has measured

substantially high

sudden output voltage.

 If the fault persists:

  • Check the AC connection to inverter.
  • Verify that the inverter is set to the correct country.
  • Check with the grid operator if a large surge source or irregular load exists near the site.
  • Verify that the output wire size matches the distance between the inverter and the location of the grid connection.
  • Use a larger gauge wire for the AC output.
  • Refer to the AC Wiring Application Note, available on the SolarEdge website at http://www.solaredge.com/files/pdfs/application-note-recommended-wiring.pdf
15 102 DC Voltage Too High DC overvoltage.The input DC voltage exceeds the maximum supported level. The SolarEdge system normally eliminates

DC overvoltage errors: When DC

overvoltage is detected, the inverter shuts

off the power optimizers and restarts.

If the fault persists:

  • Turn OFF the inverter ON/OFF switch.
  • If after five minutes, the LCD panel does not show a low safety voltage (1V per optimizer), check which string is malfunctioning, and recheck its connections to the inverter.
  • Proceed according to Power Optimizers Troubleshooting on page 57
  • Re-commission all inverters in the site, as described in Chapter 4: Commissioning the installation
16 123 Measurement Error Internal hardware error If the fault persists, contact SolarEdge support or your solar provider.

GEM Energy support 1300 969 471.
17 104 Temperature Too High Over temperature. If the fault persists:

  • Verify that proper clearances exist around the inverter.
  • Make sure that the heat-sink fins are clear of first and obstacles.
  • Reinstall in a cooler location
24 N/A Faulty Temp. Sensor Broken or unconnected Temperature Sensor. If the fault persists, contact SolarEdge support or your solar provider.

GEM Energy support 1300 969 471.
25 121 Isolation Fault PV Isolation fault. The

inverter has detected

the PV solar array is not

properly isolated from

ground earth. The

isolation is checked

each time the inverter starts up.

 If the fault persists:

Check the PV installation for isolation

problems and ground leakage.

Only a certified PV installer must fix the

faulty string before connecting it to the inverter.
26 122 Fault AC Relay The AC relay failed during wake-up tests. If the fault persists:

Disconnect inverter from AC grid.

Contact SolarEdge support or your Solar provider.

GEM Energy support 1300 969 471.
27 95, 106, 120, 125, 126 Measurement Error Internal hardware error. If the fault persists, contact SolarEdge support or your solar provider.

GEM Energy support 1300 969 471.
28 N/A RCD Sensor Error The RCD measurement has failed during the wake-up test phase. If the fault persists, contact SolarEdge support or your solar provider.

GEM Energy support 1300 969 471.
29-30 N/A Phase Balance Error The monitoring hardware that checks the balance of each phase (L1-N and L-2-N) has exceeded the allowed limit.
  • Check the grid connection.
  • Check the GND wire connection.
  • Check the L1, L2 and Neutral wire connections.
  • Verify symmetric load between L1 and L2.
  • Consult the local grid authority
31, 33 64/65/66 AC Voltage Too High (Line 1/2/3) Grid voltage is above the limit permitted.
  • Verify that the inverter is set to the correct country.
  • Turn OFF the inverters in the site and verify AC grid voltage.
  • If the inverter is located far from the connection point to the grid, use a larger gauge AC wire.
  • Consult the grid operator.
  • If permitted by local authorities, use theSolarEdge Configuration Tool to change the settings.
32, 41 61, 62, 63 67/68/69 AC Voltage Too Low Grid voltage is below the limit permitted.
  • Verify that the inverter is set to the correct country.
  • Consult the grid operator.
  • If permitted by local authorities, use theSolarEdge Configuration Tool to change the settings.
34 79/80/81 AC Freq Too High (Line 1/2/3) Grid frequency is above the limit permitted.
  • Verify that the inverter is set to the correct country.
  • Consult the grid operator.
  • If permitted by local authorities, use theSolarEdge Configuration Tool to change the settings.
35 82/82/84 AC Fre Too Low (Line 1/2/3) Grid frequency is below the limit permitted.
  • Verify that the inverter is set to the correct country.
  • Consult the grid operator.
  • If permitted by local authorities, use theSolarEdge Configuration Tool to change the settings.
36 72/74/75 DC Injection (Line 1/2/3) DC feed detected on AC output. If the fault persists, contact SolarEdge support or your solar provider.

GEM Energy support 1300 969 471.
40 N/A Islanding AC grid voltage is out of range. The inverter has shut off due to islanding. When AC voltage returns, the inverter should restart after the reconnection time, which depends on  country grid connection codes.

If the problem persists, consult with the grid operator whether frequent AC disruptions have occurred at the site.
43 N/A Isolation Fault Internal hardware error. If the fault persists, contact SolarEdge support or your solar provider.

GEM Energy support 1300 969 471.
44 44 No Country Selected The inverter is not configured to any country. Select the country.
46 N/S Phase Unbalance Uneven power supply in three inverters. Change the Phase Balance option in theInverter’s LCD menu to Disable.Refer to Power Control on page 35 and to the SolarEdge Phase Balancing Manual, available on the SolarEdge website at http://www.solaredge.com/files/pdfs/phase_balancing_connection_guide.pdf
N/A 103, 146 DC Voltage Too Low/UDC Min The input DC voltage is below the minimum level that is supported. Turn the inverter OFF and then ON. If the fault persists, contact SolarEdge support or your solar provider.

GEM Energy support 1300 969 471.

 
N/A 49 SE Communication Internal software. If the fault persists, contact SolarEdge support or your solar provider.

GEM Energy support 1300 969 471.
N/A 78 Grid Sync Error Grid voltage or frequency is unstable. If the fault persists, contact SolarEdge support or your solar provider.

GEM Energy support 1300 969 471.
N/A 91/92/93/96/97/98 AC Over Current Line 1/2/3 Grid Error If the fault persists, contact SolarEdge support or your solar provider.

GEM Energy support 1300 969 471.
N/A 99-101 AC Voltage Too High Line 1/2/3 Grid Error Turn the inverter OFF and then ON. If the fault persists, contact SolarEdge support or your solar provider.

GEM Energy support 1300 969 471.
N/A 105 Temperature Too Low Under temperature. If the fault persists, reinstall the inverter in a warmer place.
N/A 124 Ground Current – RCD Internal hardware error. If the fault persists, contact SolarEdge support or your solar provider.

GEM Energy support 1300 969 471.

 

Troubleshooting SolarEdge Error Codes

Before attempting to troubleshoot any error code, it is crucial to ensure your safety by following these guidelines:

  1. Disconnect the inverter from the grid: This can be done by disconnecting the inverter’s AC output breaker or by turning off the grid main breaker.

  2. Do not attempt to repair the inverter yourself: If you are not a qualified electrician, do not attempt to repair the inverter. Instead, contact a certified SolarEdge installer or technician.

  3. Refer to the SolarEdge inverter user manual: The user manual provides detailed instructions on troubleshooting specific error codes and safety precautions.

Resolving Common SolarEdge Error Codes

Here are some general troubleshooting steps for common SolarEdge error codes:

  • Check the AC grid voltage: Ensure the AC grid voltage is within the specified range. If the voltage is too high or too low, contact your utility company.

  • Inspect the AC wiring: Look for any damaged or loose connections in the AC wiring. Tighten any loose connections and replace damaged wires.

  • Check the DC wiring: Inspect the DC wiring for any signs of damage or insulation failure. Replace any damaged wires.

  • Clean the inverter: Clean the inverter’s ventilation fan and vents to ensure proper airflow.

  • Update the inverter firmware: Check for available firmware updates and install them if necessary.

Preventing SolarEdge Error Codes

To minimize the risk of encountering SolarEdge error codes, follow these preventive measures:

  • Regular maintenance: Schedule regular maintenance checks with a certified SolarEdge installer to inspect the inverter and the entire solar power system.

  • Keep the inverter clean: Regularly clean the inverter’s ventilation fan and vents to prevent overheating.

  • Monitor the system: Keep an eye on the SolarEdge Monitoring Platform for any warnings or alerts.

  • Promptly address any issues: If you notice any signs of trouble, such as decreased power output or strange noises, contact your SolarEdge installer immediately.

Conclusion

SolarEdge error codes are valuable tools for identifying and resolving potential problems with your solar power system. By understanding the meaning of error codes and following the troubleshooting steps outlined in this guide, you can effectively address most issues and ensure the optimal performance of your solar panels. Remember, if you are not comfortable troubleshooting the error code yourself, always consult a qualified SolarEdge installer or technician for assistance.

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