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HUAWEI

HUAWEI-error codes

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.
BrandError codeCauseAction
Huawei2001High String Input VoltageCheck the number of PV modules connected in series in the PV string.
Huawei2002DC Arc FaultCheck whether the string cables arc or are in poor contact.
Huawei2011String ReversedCheck whether the PV string is reversely connected.
Huawei2012String Current BackfeedCheck whether the PV modules connected in series in the PV string are enough. If not, add more modules.
Huawei2031Power grid phase wire short-circuit to PECheck the impedance of the output phase wire to PE.
Huawei2032Grid FailurePlease check the AC wiring and measure. If you consider the wiring to be in order, Contact inverter service
Huawei2033Grid UndervoltagePlease check the AC wiring and measure. If you consider the wiring to be in order, Contact inverter service
Huawei2034Grid OvervoltagePlease check the AC wiring and measure. If you consider the wiring to be in order, Contact inverter service
Huawei2035Unbalanced Grid VoltagePlease check the AC wiring and measure. If you consider the wiring to be in order, Contact inverter service
Huawei2036Grid OverfrequencyIf the alarm occurs occasionally, the power grid may be abnormal temporarily.
Huawei2037Grid UnderfrequencyThe inverter automatically recovers after detecting that the power grid becomes normal.
Huawei2038Unstable Grid FrequencyIf problem occurs once only: wait for the regulator to become stable again. If problem occurs repeatedly: please Contact inverter service
Huawei2039OutputOvercurrentIf problem occurs once only: wait for the regulator to become stable again. If problem occurs repeatedly: please Contact inverter service
Huawei2040Output DC Component OverhighIf problem occurs once only: wait for the regulator to become stable again. If problem occurs repeatedly: please Contact inverter service
Huawei2051Abnormal Residual CurrentIf problem occurs once only: wait for the regulator to become stable again. If problem occurs repeatedly: please Contact inverter service
Huawei2061Abnormal GroundingIf problem occurs once only: wait for the regulator to become stable again. If problem occurs repeatedly: please Contact inverter service
Huawei2062Low Insulation ResistancePlease check the DC wiring and measure. If you consider the wiring to be in order, Contact inverter service
Huawei2063OvertemperatureCheck temperature of direct surroundings and reduce this as required.
Huawei2064Device FaultIf constant, Contact inverter service
Huawei2065Upgrade Failed or Software Version UnmatchThis text is displayed for information purposes only. If an update is not performed, please Contact inverter service
Huawei61440Monitoring Unit FaultyIf problem occurs repeatedly, Contact inverter service
Huawei2066License Expired1.Apply for a new certificate.2.Load the new certificate
Huawei2067Faulty Power CollectorCheck the manual and measure/check the pv-system
Huawei2067Transient AC OvervoltageCheck whether the grid connection voltage exceeds the upper threshold. If yes, contact the local power operator.
Huawei103High DC Input VoltagePlease check the DC wiring and measure. If you consider the wiring to be in order, Contact inverter service
Huawei106-113Abnormal String 1–8Please check the DC wiring and measure. If you consider the wiring to be in order, Contact inverter service
Huawei120-127String 1–8 ReversedPlease check the DC wiring and measure. If you consider the wiring to be in order, Contact inverter service
Huawei200Abnormal DC CircuitPlease check the DC wiring and measure. If you consider the wiring to be in order, Contact inverter service
Huawei202Abnormal Invert CircuitPlease check the DC wiring and measure. If you consider the wiring to be in order, Contact inverter service
Huawei301Abnormal Grid VoltagePlease check the AC wiring and measure. If you consider the wiring to be in order, Contact inverter service
Huawei305Abnormal Grid FrequencyPlease check the AC wiring and measure. If you consider the wiring to be in order, Contact inverter service
Huawei313Low Insulation ResistanceCheck system isolation. If you consider the isolation impedance to be in order, Contact inverter service
Huawei318Abnormal Residual CurrentCheck system isolation. If you consider the isolation impedance to be in order, Contact inverter service
Huawei321Cabinet OvertemperatureCheck 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
Huawei322Abnormal SPI Communication1.) 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
Huawei326Abnormal GroundingPlease check the AC wiring and measure. If you consider the wiring to be in order, Contact inverter service
Huawei400System Fault1.) 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
Huawei410Abnormal Auxiliary PowerIf problem occurs repeatedly, Contact inverter service
Huawei411AFCI Self-Check FailureIf problem occurs repeatedly, Contact inverter service
Huawei412DC Arc FaultPlease check the DC wiring and measure. If you consider the wiring to be in order, Contact inverter service
Huawei504Software Version UnmatchCheck the manual and measure/check the pv-system
Huawei505Upgrade FailedCheck the manual and update the pv-system again.
Huawei61440Flash FaultIf problem occurs repeatedly, Contact inverter service

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