Solar power alarm codes

Alarms are included in the forwarded message inside the alarm property. This array of strings contains a complete list of keys of alarms resulting from collecting a report, as well as the original vendor-specific numeric alarm code or (or the alarm section and the corresponding bit in case of a bitmask). For example: excessively_high_ambient_temperature_bit_6 would indicate a high temperature alarm, the details of which can be found on the 6th bit of the alarms bitmask in the documentation for this asset. The first table lists all possible generic alarm keys together with possible causes and suggested actions.

On this page

• Generic alarm codes
• Asset-specific errors and warnings
  • Sungrow
  • GoodWe
  • SMA
  • Huawei inverter
  • Huawei Smartlogger
  • Solax Power

Generic alarm codes

Key	Possible Cause and Suggested Action
grid_overvoltage	Grid voltage is higher than expected. Check grid connections and settings. Contact the OEM if the issue persists.
grid_undervoltage	Grid voltage is lower than expected. Check grid connections and settings. Contact the OEM if the issue persists.
grid_overfrequency	Grid frequency is too high. Check grid connections and settings. Contact the OEM if the issue persists.
grid_underfrequency	Grid frequency is lower than normal. Check grid connections and settings. Contact the OEM if the issue persists.
grid_frequency_unstable	The grid frequency change rate does not comply with the local power grid standard. Check the grid connection and settings, and contact the OEM if the problem persists.
grid_power_outage	Loss of grid power detected. Ensure grid connectivity and check for local outages. Contact the OEM if the issue persists.
excess_leakage_current	Higher than normal leakage current detected. Inspect system insulation. Contact the OEM if the issue persists.
grid_abnormal	Unspecified grid abnormality. Review grid parameters and connections. Contact the OEM if the issue persists.
grid_voltage_imbalance	Imbalance in grid voltage levels. Contact the OEM if the issue persists.
grid_connection_fault	Generic alarm about a faulty grid connection. Check the connection and settings, as well as the asset-specific manual for more information.
pv_reverse_connection_alarm	Reverse connection in PV system. Ensure proper wiring polarity. Contact the OEM if the issue persists.
pv_abnormal_alarm	Generic PV system abnormality. Such an alarm can be caused by a voltage imbalance (due to a reverse current) in the strings connected to the MPPT (Maximum Power Point Tracking) input most commonly during power limitation. Contact the OEM if the issue persists.
excessively_high_ambient_temperature	Ambient temperature too high. Contact the OEM if the issue persists.
excessively_low_ambient_temperature	Ambient temperature too low. Contact the OEM if the issue persists.
low_system_insulation_resistance	Insulation resistance lower than expected. Inspect for damages or wear. Contact the OEM if the issue persists.
ground_fault	Fault detected in system grounding. Contact the OEM if the issue persists.
electric_arc_fault	Electrical arc detected. Contact the OEM.
reverse_connection_of_meter_or_ct	Reverse connection in metering or current transformer. Verify installation and contact OEM for support.
meter_communication_abnormal	Communication issue with meter. Check connections and settings. Contact the OEM if the issue persists.
generic_system_fault	Generic system fault. Check the asset-specific documentation for more details. Contact the OEM if the issue persists.
generic_system_alarm	General system alarm. Check the asset-specific documentation for more details. Contact the OEM if the issue persists.
surge_protection_fault	Fault detected in the surge protection device. Contact the OEM if the issue persists.
high_string_input_voltage	String input voltage exceeding the maximum DC input voltage of the inverter was measured. Check the asset-specific manual for more information and contact the OEM for support.
low_string_input_voltage	String input voltage below the minimum DC input voltage of the inverter was measured. The inverter may power down because of this. Check the asset-specific manual for more information and contact the OEM for support.
abnormal_residual_current	Residual current (leakage current from PV to ground) has been measured. Contact the OEM for support.
generic_battery_fault	Fault with the external battery system. Review the asset-specific documentation for more information or contact the OEM for support.
off_grid_mode_active	The off-grid mode is active on the inverter. This may be the result of a grid fault or a setting on the inverter. Contact the OEM for support if the alarm persists.
string_over_current	Excessively high current has been measured on one or more PV strings. Contact the OEM for support.
internal_fan_abnormal	The internal fan is malfunctioning. Contact the OEM for support.
external_fan_abnormal	The external fan is malfunctioning. Contact the OEM for support.
afci_fault	Fault in the arc-fault circuit interrupter. Contact the OEM for support.
internal_communication_failure	Generic error relating to an internal communication failure. Refer to the asset-specific documentation for more information or contact the OEM for support.
high_dc_component_in_ac	High DC component was measured on the AC side of the inverter. Refer to the asset-specific documentation for more information or contact the OEM for support.
string_current_reflux	Reflux current detected on one or more strings. Refer to the asset-specific documentation for more information or contact the OEM for support.

Asset-specific errors and warnings

Sungrow

Key	Possible Cause and Suggested Action
sungrow_grid_confrontation	Active when the inverter is set to off-grid mode, and the on-grid or off-grid output port is connected to the real grid. Contact the OEM for support.
sungrow_boost_capacitor_overvoltage_alarm	The voltage of the boost capacitor exceeds the preset alarm threshold. Contact the OEM for support if the issue persists.
sungrow_boost_capacitor_overvoltage_fault	The voltage of the boost capacitor exceeds the preset fault threshold. Contact the OEM for support.
sungrow_pv_connection_fault	Fault in PV connection. Inspect PV modules and connections. Contact the OEM if the issue persists.
sungrow_inverter_parallel_communication	Communication issue between two inverters in parallel. Check inter-inverter connections. Contact the OEM if the issue persists.
sungrow_mppt_reverse_connection	Reverse connection in MPPT (Maximum Power Point Tracking) system. Check connections and consult OEM if needed.

GoodWe

Key	Possible Cause and Suggested Action
goodwe_spi_failure	Failure in the Serial Peripheral Interface. Either occasional situation due to an external magnetic field, or the control board has a problem. Contact the OEM if the issue persists.
goodwe_eeprom_failure	Failure in the EEPROM memory. Contact the OEM if the issue persists.
goodwe_night_sps_fault	Device exception. Contact the OEM if the issue persists.
goodwe_relay_check_or_bus_start_fail	Faulty connection of the cable between the control board and the power board, or the neutral and ground cables are not properly connected on the AC side. Contact the OEM if the issue persists.
goodwe_ovgr_fault	Either the voltage of one or more PV strings is too low, or the control board has a problem. Contact the OEM if the issue persists.
goodwe_night_bus_fault	Contact the OEM if the issue persists.
goodwe_vac_fail	Can be caused by an incorrect grid code setting, unstable grid voltage, AC cable resistance too high, or an AC cable connection problem. Check the connections and settings. Contact the OEM if the issue persists.
goodwe_dc_switch_fail	DC trip switch trip times overrun. Contact the OEM if the issue persists.
goodwe_slave_dsp_error	Error in the slave DSP. Contact the OEM if the issue persists.
goodwe_pid_operation_abnormal	PID system is malfunctioning or there is a system grounding fault.
goodwe_pv_short_circuit_fault	Short-circuit fault detected. Contact the OEM for support.
goodwe_non_feeding_ocp	Excessively high PV current detected while the system is powered off. Contact the OEM for support.
goodwe_vac_consistency_failure	Different value between Master and Slave for grid voltage. Contact the OEM if the issue persists.
goodwe_fac_consistency_failure	Different value between Master and Slave for grid frequency. Contact the OEM if the issue persists.
goodwe_dc_current_consistency_fail	Different value between Master and Slave for output DC current. Contact the OEM if the issue persists.
goodwe_gfci_fault	Fault in the ground-fault circuit interrupter. Contact the OEM for support.
goodwe_hct_fail, goodwe_cpld_error, goodwe_rev_1.5v_fail, goodwe_hct_check_fail, goodwe_even_mppt_ocp, goodwe_odd_mppt_ocp, goodwe_model_identify_error, goodwe_bus_imbalance	Either occasional situation due to an external magnetic field, or the control board has a problem. Contact the OEM if the issue persists.

SMA

Alarms for SMA inverters can only be communicated if the inverters are directly connected to the Teleport, without an SMA Data Manager in between.

Key	Description
sma_grid_incident	The grid frequency or voltage is out of range or unstable, or the connection is faulty. Check the asset-specific documentation for more information.
sma_dc_start_conditions_not_met	Feed-in conditions not met for the utility grid. Contact the OEM for more information.
sma_bridged_strings_error	DC inputs A and B are bridged when they should not be, or are not bridged when they should be. Contact the OEM for more information and to have this resolved.
sma_version_test_failed	Processor defective, contact the OEM for more information.
sma_input_defective	One of the asset inputs is defective. Check the device-specific OEM manual for more detailed information, or contact the OEM to have this resolved.
sma_fault_sensor_interior_temperature	An interior temperature sensor was found defective. Contact the OEM for support.
sma_file_not_found_or_defective	A necessary file was not found or is defective. The inverter may or may not keep functioning. Check the device-specific OEM manual for more detailed information, or contact the OEM to have this resolved.
sma_memory_or_data_issue	A memory or data issue. Check the device-specific OEM manual for more detailed information, or contact the OEM to have this resolved.
sma_offset_dc_current_sensor	Offset in a DC current sensor. Contact the OEM if the issue persists.
sma_control_communication_timeout	Communication to the system control is absent. Contact Withthegrid or the OEM for more information and to have this resolved.
sma_self_test_italy_terminated	A self-test for the Italian grid was terminated. If this test was not meant to be run, contact the OEM for support.
sma_rapid_shutdown	The rapid-shutdown procedure has been initiated. Check the asset-specific documentation for more details, or contact the OEM for support.
sma_time_sync_failed	No time information could be called up from the NTP server. Ensure that the inverter has an active internet connection, or contact the OEM for support.
sma_package_error_rate_changed	The package error rate changed to OK or High. A high package rate may indicate an overloaded network or a poor connection. If the error persists, contact the OEM for support.
sma_communication_status_changed	The network communication status changed to OK, Warning, Erorr or Not connected.
sma_login_locked	After several incorrect login attempts, user login has been blocked for 15 minutes and Grid Guard login for 12 hours.
sma_webconnect_error	Webconnect error. Check the network connection, or contact the OEM if the issue persists.
sma_update_unsuccessful	Generic error specifying an unsuccessful update of a software component of the inverter or a related system. Refer to the asset-specific documentation for more information or contact the OEM for support.
sma_grid_parameter_error	Generic error about the inverter-side grid parameters. Refer to the asset-specific documentation for more information or contact the OEM for support.
sma_network_error	Generic error relating to the network connection of the inverter or a related system. Refer to the asset-specific documentation for more information or contact the OEM for support.

Huawei inverter

Key	Description
huawei_inverter_abnormal_string_power	Either the string has been shaded for a long time, or deteriorates abnormally. Check whether the current of the abnormal PV string is lower than the current of other PV strings. If yes, check that the abnormal PV string is not shaded and the actual number of PV strings is the same as the configured number. If the abnormal PV string is clean and not shaded, check whether the PV string is damaged. Contact the OEM if the issue persists.
huawei_inverter_output_overcurrent	The power grid voltage drops dramatically or the power grid is short-circuited. As a result, the inverter transient output current exceeds the upper threshold and therefore the inverter protection is triggered. The inverter detects its external working conditions in real time. After the fault is rectified, the inverter automatically recovers. If the alarm occurs frequently and affects the power production of the PV plant, check whether the output is short-circuited. If the fault persists, contact the OEM for support.
huawei_inverter_upgrade_failed_or_version_mismatch	Failure when updating the device, or a mismatch in the version detected. Perform the upgrade again, or contact the OEM if the issue persists.
huawei_inverter_certificate_or_license_issue	Issue with the certificates or licenses of the webportal or the device. Apply for a new certificate and load it to the asset. Contact the OEM for support.
huawei_inverter_faulty_monitoring_unit	The flash memory is insufficient or has bad sectors. Turn off the AC output switch and DC input switch, and then turn them on after 15 minutes. If the fault persists, replace the monitoring board or contact the OEM for support.
huawei_inverter_transient_ac_overvoltage	The asset detects that the phase voltage exceeds the transient AC overvoltage protection threshold. Check whether the voltage at the grid connection point exceeds the upper threshold. If yes, contact the local grid operator. Check whether the peak grid voltage exceeds the upper threshold. Contact the OEM for support.
huawei_inverter_peripheral_port_short_circuit	Short circuit on one of the peripheral equipment ports of the inverter. Contact the OEM for support.
huawei_inverter_churn_output_overload	Churn mode (off-grid mode) is active and the active power output surpasses a set threshold, most commonly set to 110% of the nominal active power. The solution for this case is to reduce the load or to replace the asset with one which has a larger capacity. Contact the OEM for support.
huawei_inverter_built_in_pid_operation_abnormal	Abnormal behaviour in the inverter PID. The DC-to-ground impedance may be low or an unrecoverable fault has occurred in the internal circuit. Turn off the AC switch and DC switch, wait for the period of time specified on the device safety warning label, and turn on the DC switch and AC switch. Check the DC-to-ground impedance. If a short circuit or inadequate insulation is found, rectify it. Contact the OEM for support if the issue persists.
huawei_inverter_high_input_string_voltage_to_ground	PV string to ground voltgage exceeds the maximum value. Contact the OEM for support.
huawei_inverter_on_off_grid_controller_abnormal	On-grid or off-grid controller is malfunctioning. Either the asset fails to communicate with the Backup Box or an unrecoverable fault has occurred on a circuit inside the Backup Box. Send a shutdown command on the app. Turn off the AC output switch, DC input switch, and battery switch. Check whether the power cable and RS485 cable between the Backup Box and the asset are normal. After 5 minutes, turn on the battery switch, AC output switch, and DC input switch. Contact the OEM if the error persists.
huawei_inverter_dc_protection_unit_abnormal	Either the fuse is not in position or is blown, the two relays on the breaking board are open-circuited or the contact points of the DC switches are stuck. Contact the OEM for support.
huawei_inverter_el_unit_abnormal	Either an unrecoverable fault has occurred in the internal EL circuit, the temperature of the EL device is high or the EL controller cannot communicate properly. Turn off the AC switch and DC switch, wait for 5 minutes, turn on the AC switch and DC switch, and enable EL inspection. If the fault persists after the device runs for 5 minutes, contact your dealer or technical support to replace the EL unit.
huawei_inverter_active_adjustment_instruction_abnormal	The DI input is abnormal or inconsistent with the configuration. Check whether the cables are connected correctly to the DI ports. Access the configuration page for the dry contact DI active power scheduling mode and view the DI signal configuration mapping table. Contact the power grid company to check whether the configurations in the mapping table are complete and meet the requirements.
huawei_inverter_reactive_adjustment_instruction_abnormal	The DI input is abnormal or inconsistent with the configuration. Check whether the cables are connected correctly to the DI ports. Access the configuration page for the dry contact DI reactive power scheduling mode and view the DI signal configuration mapping table. Contact the power grid company to check whether the configurations in the mapping table are complete and meet the requirements.
huawei_inverter_phase_to_pe_shortage	The impedance of the output phase wire to PE is low or the output phase wire is short-circuited to PE. Check the impedance of the output phase wire to PE, locate the position with lower impedance, and rectify the fault.
huawei_inverter_optimizer_fault	Fault in one or more optimizers in the PV system. View the fault details on the optimizer information page or contact your dealer or technical support to replace the optimizer.
huawei_inverter_pv_string_loss	The connection to one or more PV strings was lost. Check the connections or contact the OEM for support.

Huawei Smartlogger

Key	Description
huawei_smartlogger_abnormal_active_schedule	If Active Power Control Mode is set to Dry contact remote control, the four DI ports read instruction combinations not configured. Contact the OEM if the issue persists.
huawei_smartlogger_abnormal_reactive_schedule	If Reactive Power Control Mode is set to Dry contact remote control, the four DI ports read instruction combinations not configured. Contact the OEM if the issue persists.
huawei_smartlogger_abnormal_cubicle	The Cubicle device has detected an exception at the grid-connection point. Contact the OEM if the issue persists.
huawei_smartlogger_di_port_custom_alarm	The dry contact signal from the peripheral to the corresponding DI port on the SmartLogger is abnormal. Contact the OEM if the issue persists.
huawei_smartlogger_certificate_or_license_issue	One or more certificates are invalid, expired or are set to expire soon. Review the asset-specific documentation for more details or contact the OEM for support.
huawei_smartlogger_circuit_breaker_disconnected	The main AC circuit breaker at the grid connection point is disconnected. Check the circuit breaker and contact the OEM if the issue persists.
huawei_smartlogger_device_address_conflict	The address set on the SmartLogger conflicts with an existing access device address. Change the SmartLogger address to an unused address.
huawei_smartlogger_communication_box_24v_power_failure	Communication box 24v power failure. Contact the OEM for support.
huawei_smartlogger_certificate_or_license_issue	Issue with the certificates or licenses of the webportal or the device. Contact the OEM for support.

Solax Power

Key	Description
solax_power_inverter_fault_mode	The inverter is in a fault mode. This mode is activated when the inverter detects an issue or fault that affects its operation. See the remaining alarms for more information. If the issue persists, contact the OEM for support.
solax_power_inverter_permanent_fault_mode	The inverter is in a permanent fault mode. The inverter encounters a fault that it cannot recover from or that persists despite attempts to rectify it. Contact the OEM for support.
solax_power_other_device_fault	Power type fault, contact the OEM for support.
solax_power_grid_relay_fault	Relay fault, check the connection, and restart the inverter. Contact the OEM if the issue persists.
solax_power_pv_conn_dir_fault	PV direction fault, check if the PV +/- connections are connected correctly.
solax_power_eeprom_fault	DSP EPROM fault, disconnect PV wiring and reconnect.
solax_power_ac_terminal_otp	AC terminal overtemperature fault, check if the AC terminals are tightly connected and if the ambient temperature exceeds the operating range.
solax_power_internal_comms_fault	Internal communication fault, restart the inverter. If the issue is unresolved by a restart, update the ARM software.
solax_power_iso_fault	Isolation fault, check the connections of the inverter.
solax_power_sw_ocp	If the software overcurrent protection fault persists disconnect the PV and the grid, then reconnect.
solax_power_dc_inj_ocp	If the DCI overcurrent protection fault persists contact the OEM for support.
solax_power_grid_volt_10_min_fault	Grid overvoltage for ten minutes fault, the inverter will reconnect once the voltage is in the operating range.
solax_power_bus_volt_fault	DC bus voltage is out of normal operating range.
solax_power_pv_volt_fault	PV voltage is out of the normal operating range.
solax_power_grid_freq_fault	Grid frequency is out of range.
solax_power_grid_volt_fault	Grid voltage is out of range.
solax_power_mains_lost_fault	Grid lost fault, confirm connections are not loose.
solax_power_tz_protect_fault	Overcurrent fault. If the issue persists, disconnect the DC switch and restart the inverter.
solax_power_spi_err	SPI communication error. Contact the OEM if the issue persists.
solax_power_sci_err	SCI communication error. Contact the OEM if the issue persists.
solax_power_internal_comms_err	Internal communication error. Check internal communication modules. If the issue persists, contact the OEM for support.
solax_power_hw_ocp_acr	Hardware overcurrent protection on R phase. Check wiring and contact the OEM for support if the issue persists.
solax_power_hw_ocp_acs	Hardware overcurrent protection on S phase. Check wiring and contact the OEM for support if the issue persists.
solax_power_hw_ocp_act	Hardware overcurrent protection on T phase. Check wiring and contact the OEM for support if the issue persists.
solax_power_hw_ovp_bus	Hardware overvoltage protection on the DC bus. Check the system voltage and ensure it is within the operational range.
solax_power_hw_ocp_boost_i	Hardware overcurrent protection on Boost I circuit. Contact the OEM if unresolved.
solax_power_hw_ocp_boost_ii	Hardware overcurrent protection on Boost II circuit. Contact the OEM if unresolved.
solax_power_pv_config_set_wrong	PV configuration error. Verify that PV configuration settings are correct.
solax_power_sample_consistent_fault	Sampling consistency error. Contact the OEM if the issue persists.
solax_power_unrecover_relay_fault	Unrecoverable relay fault. Inspect the relay connections. Contact the OEM if the issue persists.
solax_power_current_sensor_fault	Current sensor error. Check the sensors and ensure they are functioning properly. Contact the OEM if the issue persists.
solax_power_unrecover_fanx_fault	Unrecoverable fan error. Check the inverter fans and ensure proper cooling.
solax_power_eeprom_wr_fault	EEPROM write fault. If the issue persists, contact the OEM for support.
solax_power_gfci_device_fault	Ground fault circuit interrupter (GFCI) device fault. Inspect the ground wiring and contact the OEM if the problem continues.
solax_power_sw_ocp_acr	Software overcurrent protection on R phase. Disconnect the PV and the grid, then reconnect. If the issue persists, contact the OEM for support.
solax_power_sw_ocp_acs	Software overcurrent protection on S phase. Disconnect the PV and the grid, then reconnect. If the issue persists, contact the OEM for support.
solax_power_sw_ocp_act	Software overcurrent protection on T phase. Disconnect the PV and the grid, then reconnect. If the issue persists, contact the OEM for support.
solax_power_sw_ocp_boost_i	Software overcurrent protection on Boost I circuit. Contact OEM if the issue persists.
solax_power_sw_ocp_boost_ii	Software overcurrent protection on Boost II circuit. Contact OEM if the issue persists.
solax_power_pll_fault	Phase-locked loop (PLL) fault. Check grid synchronization. Contact OEM if the issue persists.
solax_power_grid_lost_fault	Grid lost fault, confirm grid connections are secure. Contact OEM if the issue persists.
solax_power_sw_ovp_ac	AC overvoltage fault. The inverter will reconnect automatically. Contact OEM if the issue persists.
solax_power_sw_uvp_ac	AC undervoltage fault. Contact OEM if the issue persists.
solax_power_sw_ovp_acr	R phase overvoltage fault. Check the grid voltage and contact the OEM if the issue persists.
solax_power_sw_ovp_acs	S phase overvoltage fault. Check the grid voltage and contact the OEM if the issue persists.
solax_power_sw_ovp_act	T phase overvoltage fault. Check the grid voltage and contact the OEM if the issue persists.
solax_power_sw_uvp_acr	R phase undervoltage fault. Contact OEM if the issue persists.
solax_power_sw_uvp_acs	S phase undervoltage fault. Contact OEM if the issue persists.
solax_power_sw_uvp_act	T phase undervoltage fault. Contact OEM if the issue persists.
solax_power_sw_ovp_bus	Bus overvoltage protection. Check the system voltage and contact OEM if the issue persists.
solax_power_sw_ovp_boost_i	Overvoltage protection on Boost I circuit. Contact OEM if the issue persists.
solax_power_sw_ovp_boost_ii	Overvoltage protection on Boost II circuit. Contact OEM if the issue persists.
solax_power_sw_ovp_boost	Overvoltage protection on the Boost circuit. Ensure voltage is within operating range. Contact OEM if the issue persists.
solax_power_sw_ofp_ac	AC overfrequency fault. Contact OEM if the issue persists.
solax_power_sw_ufp_ac	AC underfrequency fault. Contact OEM if the issue persists.
solax_power_sw_ofp_acr	R phase overfrequency protection. Contact OEM if the issue persists.
solax_power_sw_ufp_acr	R phase underfrequency protection. Contact OEM if the issue persists.
solax_power_sw_ofp_acs	S phase overfrequency protection. Contact OEM if the issue persists.
solax_power_sw_ufp_acs	S phase underfrequency protection. Contact OEM if the issue persists.
solax_power_sw_ofp_act	T phase overfrequency protection. Contact OEM if the issue persists.
solax_power_sw_ufp_act	T phase underfrequency protection. Contact OEM if the issue persists.
solax_power_iso_i_fault	Isolation fault on Boost I circuit. Check the wiring and connections for isolation issues. Contact OEM if the issue persists.
solax_power_iso_ii_fault	Isolation fault on Boost II circuit. Check the wiring and connections for isolation issues. Contact OEM if the issue persists.
solax_power_relay_short_fault	Relay short-circuit fault. Inspect relay connections. Contact the OEM if unresolved.
solax_power_relay_open_fault	Relay open fault. Check the relay connections. Contact OEM if the issue persists.
solax_power_sw_ocp_dci	DC current overcurrent protection. Contact the OEM if unresolved.
solax_power_sw_ocp_gfci	GFCI overcurrent protection. Inspect the ground wiring and contact OEM if the issue persists.
solax_power_sw_ocp_gfci_jump_i	GFCI Jump I fault. Inspect the GFCI connections and contact OEM if the issue persists.
solax_power_sw_ocp_gfci_jump_ii	GFCI Jump II fault. Inspect the GFCI connections and contact OEM if the issue persists.
solax_power_sw_ocp_gfci_jump_iii	GFCI Jump III fault. Inspect the GFCI connections and contact OEM if the issue persists.
solax_power_sw_ocp_gfci_300ma	GFCI 300mA overcurrent protection. Check the ground wiring and ensure proper connections.
solax_power_sw_bus_unblance	Bus voltage unbalance. Check the bus wiring and contact OEM if the issue persists.
solax_power_sw_ocp_acrms	AC RMS overcurrent protection. Disconnect and reconnect the inverter.
solax_power_sw_over_temp	Inverter overtemperature protection. Check if the ambient temperature is within the operational range.
solax_power_sw_iacrms_unblance	AC current unbalance. Check the grid connection and contact OEM if the issue persists.
solax_power_sw_fan_i_fault	Fan I error. Check Fan I for obstructions or failure. Contact OEM if the issue persists.
solax_power_sw_fan_ii_fault	Fan II error. Check Fan II for obstructions or failure. Contact OEM if the issue persists.
solax_power_sw_fan_iii_fault	Fan III error. Check Fan III for obstructions or failure. Contact OEM if the issue persists.
solax_power_unrecover_ln_fault	Unrecoverable line-neutral fault. Confirm proper connection of the neutral wire and contact the OEM for support if unresolved.
solax_power_auto_test_fault	Automatic test fault. Restart the inverter and ensure all self-checks are successfully completed. If the fault persists, contact the OEM for support.
solax_power_phase_delta_fault	Phase delta fault. Check for phase imbalances or connection issues. Contact the OEM if the problem continues.
solax_power_control_loop_err	Control loop error. Verify proper grid synchronization. Contact the OEM if unresolved.