Inverter

Service

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List

Below you will find a list of common error messages from various brands. Not all error messages are listed here. It is advisable to also consult the manual of the device.

Brand Error code Cause Action
______________ ____________________________ _________________________ ________________________________________________________
Huawei 2001 High String Input Voltage Check the number of PV modules connected in series in the PV string.
Huawei 2002 DC Arc Fault Check whether the string cables arc or are in poor contact.
Huawei 2011 String Reversed Check whether the PV string is reversely connected.
Huawei 2012 String Current Backfeed Check whether the PV modules connected in series in the PV string are enough. If not, add more modules.
Huawei 2031 Power grid phase wire short-circuit to PE Check the impedance of the output phase wire to PE.
Huawei 2032 Grid Failure Please check the AC wiring and measure. If you consider the wiring to be in order, contact inverter service
Huawei 2033 Grid Undervoltage Please check the AC wiring and measure. If you consider the wiring to be in order, contact inverter service
Huawei 2034 Grid Overvoltage Please check the AC wiring and measure. If you consider the wiring to be in order, contact inverter service
Huawei 2035 Unbalanced Grid Voltage Please check the AC wiring and measure. If you consider the wiring to be in order, contact inverter service
Huawei 2036 Grid Overfrequency If the alarm occurs occasionally, the power grid may be abnormal temporarily.
Huawei 2037 Grid Underfrequency The inverter automatically recovers after detecting that the power grid becomes normal.
Huawei 2038 Unstable Grid Frequency If problem occurs once only: wait for the regulator to become stable again. If problem occurs repeatedly: please contact inverter service
Huawei 2039 OutputOvercurrent If problem occurs once only: wait for the regulator to become stable again. If problem occurs repeatedly: please contact inverter service
Huawei 2040 Output DC Component Overhigh If problem occurs once only: wait for the regulator to become stable again. If problem occurs repeatedly: please contact inverter service
Huawei 2051 Abnormal Residual Current If problem occurs once only: wait for the regulator to become stable again. If problem occurs repeatedly: please contact inverter service
Huawei 2061 Abnormal Grounding If problem occurs once only: wait for the regulator to become stable again. If problem occurs repeatedly: please contact inverter service
Huawei 2062 Low Insulation Resistance Please check the DC wiring and measure. If you consider the wiring to be in order, contact inverter service
Huawei 2063 Overtemperature Check temperature of direct surroundings and reduce this as required.
Huawei 2064 Device Fault If constant, contact inverter service
Huawei 2065 Upgrade Failed or Software Version Unmatch This text is displayed for information purposes only. If an update is not performed, please contact inverter service
Huawei 61440 Monitoring Unit Faulty If problem occurs repeatedly, contact inverter service
Huawei 2066 License Expired 1.Apply for a new certificate.2.Load the new certificate
Huawei 2067 Faulty Power Collector Check the manual and measure/check the pv-system
Huawei 2067 Transient AC Overvoltage Check whether the grid connection voltage exceeds the upper threshold. If yes, contact the local power operator.
Huawei 103 High DC Input Voltage Please check the DC wiring and measure. If you consider the wiring to be in order, contact inverter service
Huawei 106-113 Abnormal String 1–8 Please check the DC wiring and measure. If you consider the wiring to be in order, contact inverter service
Huawei 120-127 String 1–8 Reversed Please check the DC wiring and measure. If you consider the wiring to be in order, contact inverter service
Huawei 200 Abnormal DC Circuit Please check the DC wiring and measure. If you consider the wiring to be in order, contact inverter service
Huawei 202 Abnormal Invert Circuit Please check the DC wiring and measure. If you consider the wiring to be in order, contact inverter service
Huawei 301 Abnormal Grid Voltage Please check the AC wiring and measure. If you consider the wiring to be in order, contact inverter service
Huawei 305 Abnormal Grid Frequency Please check the AC wiring and measure. If you consider the wiring to be in order, contact inverter service
Huawei 313 Low Insulation Resistance Check system isolation. If you consider the isolation impedance to be in order, contact inverter service
Huawei 318 Abnormal Residual Current Check system isolation. If you consider the isolation impedance to be in order, contact inverter service
Huawei 321 Cabinet Overtemperature Check the inverter for heat build up or blockage of the cooler ribs and rectify as required. If this does not correct the problem, contact inverter service
Huawei 322 Abnormal SPI Communication 1.) Switch off device with DC disconnector. 2.) Wait until the display has turned off completely. 3.) Switch on device with DC disconnector. If this does not rectify the error, contact inverter service
Huawei 326 Abnormal Grounding Please check the AC wiring and measure. If you consider the wiring to be in order, contact inverter service
Huawei 400 System Fault 1.) Switch off device with DC disconnector. 2.) Wait until the display has turned off completely. 3.) Switch on device with DC disconnector. If this does not rectify the error, contact inverter service
Huawei 410 Abnormal Auxiliary Power If problem occurs repeatedly, contact inverter service
Huawei 411 AFCI Self-Check Failure If problem occurs repeatedly, contact inverter service
Huawei 412 DC Arc Fault Please check the DC wiring and measure. If you consider the wiring to be in order, contact inverter service
Huawei 504 Software Version Unmatch Check the manual and measure/check the pv-system
Huawei 505 Upgrade Failed Check the manual and update the pv-system again.
Huawei 61440 Flash Fault If problem occurs repeatedly, contact inverter service

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