Sungrow SG2K-S / SG2K5-S / SG3K-S / SG3K-D / SG5K-D PV Grid-Connected Inverter errors

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Sungrow Inverter Errors on the App or LCD Screen

Sungrow Inverter Error Codes – If the Wi-Fi module is equipped, an error icon will be shown in the App once a fault occurs. For details, see the related manual. At the same time, the “Error” state will be shown on the main screen of the inverter.

002 Grid over-voltage. The grid voltage exceeds the protective value. 1.  Check the voltage of the grid.

2.      If the grid voltage exceeds the permissible range of inverter protection parameters, ask utility grid company for a solution.

3.      If the grid voltage is within the permissible range, contact Sungrow Service Dept.

003 Transient over-voltage. The grid transient voltage exceeds the protective value. 1.    This is a short-term fault due to grid condition. Wait a moment for inverter recovery.

2.     If the fault persists, please contact Sungrow Service Dept.

004 Grid under-voltage. The grid voltage is below the protective value. 1.  Check the grid voltage.

2.      If the grid voltage exceeds the permissible range of inverter protection parameters, ask utility grid company for a solution.

3.      If the grid voltage is within the permissible range, contact Sungrow Service

Dept.

005 Grid under-voltage. The grid voltage is below the protective value, which is lower than the protective value of error 004. 1.    This is a short-term fault due to grid condition. Wait a moment for inverter recovery.

2.     If the fault persists, please contact Sungrow Service Dept.

006 AC over-current.

The AC output current exceeds inverter allowable upper limit.

1.    The inverter will resume if the output current falls below the protection value.

2.     If the fault persists, please contact Sungrow Service Dept.

007 Transient               AC overcurrent. 1.  The inverter will self-recover after several seconds.

2.     If the fault persists, please contact Sungrow Service Dept.

008 Grid over-frequency. The grid frequency exceeds the protective value. 1.  Check the grid frequency.

2.     If the grid frequency exceeds the permissible range of inverter protection parameters, ask utility grid company for a solution.

3.     If the grid frequency is within the permissible range, contact Sungrow Service

Dept.

009 Grid under-frequency. The grid frequency is below the protective

value.

010 Islanding 1.    Check whether the AC circuit breaker is triggered.

2.   Check whether AC cables are all firmly connected.

3.  Check whether the grid is not in service.

4.  If all conditions are OK and this fault still occurs in the LCD screen, contact Sungrow Service Dept.

011 DC injection over-current.

The DC current injection of AC current

exceeds the upper limit.

1.  Wait a moment for inverter recovery.

2.    If the fault occurs repeatedly, contact Sungrow Service Dept.

012 Leakage current over-current.

The leakage current exceeds the upper limit.

1.  Check the PV strings for a ground fault.

2.    If the fault occurs repeatedly, contact Sungrow Service Dept.

014 10-minute grid over-voltage.

The average grid voltage exceeds the permissible range for over 10 minutes.

1.     Check whether the inverter selected country code is the country you are in.

2.  Wait a moment for inverter recovery.

3.   Check the voltage of the grid. If the grid voltage exceeds the permissible range of inverter protection parameters, ask utility grid company for a solution.

4.    If the fault occurs repeatedly, contact Sungrow Service Dept.

015 Grid over-voltage

The grid voltage exceeds the protective value, which is higher than the protective value of error 002.

1.  Check the model of the AC cables.

2.  Wait a moment for inverter recovery.

3.      If the grid voltage exceeds the permissible range, ask utility grid company for a solution.

4.    If the fault occurs repeatedly, contact Sungrow Service Dept.

016 The bus voltage or power is high. 1.  Wait a moment for inverter recovery.

2.    If the fault occurs repeatedly, contact Sungrow Service Dept.

019 Bus transient over-voltage.

The transient bus voltage exceeds the protective value.

1.  Wait a moment for inverter recovery.

2.    If the fault occurs repeatedly, contact Sungrow Service Dept.

020 Bus over-voltage.

The bus voltage exceeds the protective value.

1.  Wait a moment for inverter recovery.

2.    If the fault occurs repeatedly, contact Sungrow Service Dept.

021 PV1 input over-current. Check the layout and the wiring of PV1 input.
022 PV2 input over-current. Check the layout and the wiring of PV2 input.
028 PV1 connection reverse. Check the cable connections of PV1.
029 PV2 connection reverse Check the cable connections of PV2.
036 The temperature of the radiator is too high. 1.   Check whether the ambient temperature shown on the screen is too high. Wait a moment for inverter recovery.

2.  Check whether there is enough space for convection.

3.   Check whether the inverter is in direct sunlight.

4.     Check whether the fan is normal. Replace it if necessary.

5.  Clean the air inlets.

6.     If the fault persists, please contact Sungrow.

037 The internal temperature of the inverter is too high.
038 Relay fault on the grid side. 1.  Wait a moment for inverter recovery.

2.    If the fault occurs repeatedly, contact Sungrow Service Dept.

039 The resistance (ISO-flt) insulation is low. 1.  Check whether there is a reliable inverter grounding line.

2.  Check whether the positive and negative of PV panels is short-circuited with ground lead.

3.  Wait a moment for inverter recovery.

4.    If the fault occurs repeatedly, contact Sungrow Service Dept.

041 Leakage current sampling fault. 1.  Wait a moment for inverter recovery.

2.    If the fault occurs repeatedly, contact Sungrow Service Dept.

043 Inner under-temperature fault. The ambient of the temperature inside the inverter is too low. The inverter will recover once the ambient temperature rises above -25℃.
044 Open-loop inverter self-test fault. 1.  Wait a moment for inverter recovery.

2.    If the fault occurs repeatedly, contact Sungrow Service Dept.

045 PV1 boost circuit fault. 1.  Wait a moment for inverter recovery.

2.    If the fault occurs repeatedly, contact Sungrow Service Dept.

046 PV2 boost circuit fault.  
048 Phase current sampling fault. 1.  Wait a moment for inverter recovery.

2.    If the fault occurs repeatedly, contact Sungrow Service Dept.

053 The slave DSP detects that the grid voltage exceeds the protective value. 1.  Check the grid voltage.

2.      If the grid voltage exceeds the permissible range of inverter protection parameters, ask utility grid company for a solution.

3.      If the grid voltage is within the permissible range, contact Sungrow Service Dept.

054 The slave DSP detects that the grid frequency exceeds the protective value. 1.  Check the grid frequency.

2.     If the grid frequency exceeds the permissible range of inverter protection parameters, ask utility grid company for a solution.

3.     If the grid frequency is within the

permissible range, contact Sungrow Service Dept.

056 The slave DSP detects that the leakage current exceeds the protective range. 1.   Check whether there is a grounded fault of the PV string.

2.    If the fault occurs repeatedly, contact Sungrow Service Dept.

059 Communication alarm between master DSP

and slave DSP.

1.  Wait 1 minute for inverter recovery.

2.    If the fault persists, contact Sungrow Service Dept.

061 Alarm for no inverter typesetting. Contact Sungrow Service Dept.
070 Fans are defective Stop the inverter and disconnect the AC & DC cables. Check whether the fan duct has

been blocked. If not, replace fans.

084 Warning for reverse cable connection of the Sungrow Meter. 1.       Check whether the power cable connections are correct.

2.    For Sungrow single-phase meter, check whether the CT clamp of the 1-phase sensor is correctly placed.

085 Mismatched software version. Please contact Sungrow Service Dept.
100 The AC output current exceeds the upper limit. 1.    The inverter will resume if the output current falls below the protection value.

2.     If the fault persists, please contact Sungrow Service Dept.

101 Grid over-frequency. The grid frequency exceeds the protective value, which is higher than the protective value of error 008. 1.  Check the grid frequency.

2.     If the grid frequency exceeds the permissible range of inverter protection parameters, ask utility grid company for a solution.

3.     If the grid frequency is within the

102 Grid under-frequency. The grid frequency is below the protective value, which is lower than the protective value of error 009. permissible range, contact Sungrow Service Dept.
106 The inverter is not grounded. Neither the PE terminal on the AC connection block nor the second PE terminal on the enclosure is reliably connected. Check whether there is a reliable inverter grounding line, if there is access to the ground, and the fault persists, please contact Sungrow Service Dept.
200 Bus hardware over-voltage fault.

The bus voltage exceeds the protective value.

1.     Wait for inverter recovery after bus voltage lower.

2.    If the fault occurs repeatedly, contact Sungrow Service Dept.

201 The bus voltage is too low. 1.  Wait a moment for inverter recovery.

2.    If the fault occurs repeatedly, contact Sungrow Service Dept.

202 PV hardware over-current fault. The PV1 or PV2 current exceeds the protective value. If the fault occurs repeatedly, contact Sungrow Service Dept.
203 The PV input voltage exceeds the bus voltage. Check the functionality of the PV connection terminals.
306 Input and output power mismatching fault. If the fault occurs repeatedly, contact Sungrow Service Dept.
315 PV1 current sampling fault. Channel sampling anomaly. Contact Sungrow Service Dept.
316 PV2 current sampling fault.
320 Leakage current sensor fault. Contact Sungrow Service Dept.
409 Both the ambient temperature sensor and the radiator temperature sensor fail. If the fault occurs repeatedly, contact Sungrow Service Dept.
503 Ambient temperature sensor open circuit warning. If the fault occurs repeatedly, contact Sungrow Service Dept.
504 Ambient temperature sensor short circuit warning.
505 Radiator temperature sensor open circuit warning.
506 Radiator temperature sensor short circuit warning.
501 External memory reading/writing warning. 1.  The inverter can normally be connected to the grid.

2.   Power on the inverter again. If the fault persists, contact Sungrow Service Dept.

514 Abnormal communication warning of the Sungrow Meter. (Inverter can be normally connected to the grid.) 1.       Check whether the power cable connections of the meter are correct.

2.   Check whether the RS485 connection is correct.

We need the following information to provide you with the best assistance:

  • inverter type (e.g. string, central, grid-connected, hybrid, transformerless, single-phase, triple-phase, single MPPT, multiple MPPTs),
  • product name,
  • the serial number of the inverter
  • error code / name, and
  • a brief description of the problem.

Note: We provide our maintenance services in the NSW region. It doesn’t matter whether you are our customer or not, we help you get back on the grid.  If you need further assistance you can talk to our experts at 1300 980 640. You can also get your faulty inverter replaced starting at just $499 fully installed. Click here to request a callback.

 

Frequently Asked Questions

Sungrow error 039 states that the resistance (ISO-flt) insulation is low. Follow steps in the table above to fix it on your own.

If the average grid voltage exceeds the permissible range for over 10 minutes. Try to fix it by following the steps given the table.

Well, error 010 is Islanding and to check whether you can rectify it on your own, you need to follow the steps mentioned in the table.

Check whether the power cable connections of the meter are correct. Check whether the RS485 connection is correct.

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7 replies
        • Charles Brown
          Charles Brown says:

          Very Sorry Mam, we provide our maintenance services in NSW region only, so you can contact their toll-free number 1800 SUNGROW (786 476). They need the following information to provide you with the best assistance:
           inverter type (e.g. string, central, grid-connected, hybrid, transformerless, single phase, triple phase, single MPPT, multiple MPPTs),
           product name,
           serial number of the inverter,
           error code / name, and
           a brief description of the problem.
          Hope this will help.

          Reply
  1. Steve
    Steve says:

    Hello there! This post couldn’t be written much better!
    Going through this article reminds me of my previous roommate!

    He continually kept talking about this. I will forward this information to him.
    Fairly certain he’ll have a good read. Many thanks for sharing!

    Reply

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