Device Alarm Codes

This document lists the alarm codes for inverters, EV chargers, and batteries. Look up the codes returned in the alarms field of the realtime data API and the history data API in the tables below.

Alarm types: Fault (device stopped or malfunctioning, handle with priority), Warning (device running degraded, troubleshoot as soon as possible), Info (status notification only).

Inverter Alarms (46)

Code	Type	Name	Solution
E001	Fault	DC BUS Over Voltage	1. Check whether the DC input voltage exceeds the inverter maximum operating voltage. 2. If the issue persists, please contact your installer or our technical support team for further assistance.
E002	Fault	Mains Lost	No grid connection detected. The AC switch or circuit may be open. 1. Check whether the grid voltage is normal. 2. Check whether the AC wiring is correct and whether the AC circuit breaker is in normal condition. 3. If the issue persists, please contact your installer or our technical support team for further assistance.
E003	Fault	Grid Voltage Fault	The inverter has detected that the AC voltage exceeds the safety regulation limits. 1. Verify that the safety code is correct. 2. Check whether the AC-side wiring is correct. 3. Check whether the cross-sectional area of the AC cable is sufficient. Confirm that the wire size matches the power rating. If excessive line impedance causes the grid voltage to rise beyond the limit, replace the cable with one of a larger cross-section. 4. If permitted by the utility company, widen the inverter's voltage protection range. 5. If the issue persists, please contact your installer or our technical support team for further assistance.
E004	Fault	Grid Frequency Fault	The inverter has detected that the AC frequency exceeds the safety regulation limits. 1. Verify that the safety code is correct. 2. Occasional frequency anomalies may occur due to grid fluctuations; the inverter will automatically resume operation once the grid recovers. 3. If permitted by the utility company, widen the inverter frequency protection range. 4.If the issue persists, please contact your installer or our technical support team for further assistance.
E005	Fault	DCI Fault	1. Restart the inverter. 2. If the issue persists, please contact your installer or our technical support team for further assistance.
E006	Fault	ISO Over Limitation	An insulation fault was detected on the DC side due to low resistance to ground. 1. Check whether the PV modules, batteries, DC cables, and connectors are damaged or have water ingress. 2. Use an insulation resistance tester to measure the insulation impedance between the DC side and the ground. The measured value should not be lower than 500 kΩ. 3. If the issue persists, please contact your installer or our technical support team for further assistance.
E007	Fault	GFCI Fault	An excessive ground leakage current was detected on the inverter. 1. Check whether the PV modules, batteries, DC cables, and connectors are damaged or have water ingress. 2. If the issue persists, please contact your installer or our technical support team for further assistance.
E008	Fault	PV Over Voltage	PV input voltage exceeds inverter's allowable upper limit. 1. Reduce the number of PV modules to ensure that the open-circuit voltage of each string is lower than the inverter's maximum operating voltage 2. If the issue persists, please contact your installer or our technical support team for further assistance.
E009	Fault	Over Temperature	1. Check whether the inverter installation location is well ventilated. 2. Try shutting down the inverter for a period of time and restarting it after the temperature drops. 3. If the issue persists, please contact your installer or our technical support team for further assistance.
E010	Fault	N-PE Check Fault	1. Check whether the grounding wire on the backup side is properly connected. 2. In off-grid mode, if grounding of the neutral line on the backup side is not required, disable this function. 3.If the issue persists, please contact your installer or our technical support team for further assistance.
E011	Fault	Inverter Over Freq	Abnormal load on the backup side during off-grid operation. 1.Check whether there is an impact load on the back-up side and whether the load power is too high. 2.Check whether back-up side is short circuit.
E012	Fault	BAT Voltage Fault	1. The inverter has detected a sudden change in battery voltage. If it does not recover automatically, restart the battery. 2. Reduce the number of batteries to ensure that the maximum battery voltage is lower than the inverter maximum operating voltage. 3. If the issue persists, please contact your installer or our technical support team for further assistance.
E013	Fault	Backup Voltage Fault	1. Check whether any generation equipment is connected on the backup side. 2. Restart the inverter. 3. If the issue persists, please contact your installer or our technical support team for further assistance.
E014	Fault	HW Fault	1. Restart the inverter. 2. If the issue persists, please contact your installer or our technical support team for further assistance.
E015	Fault	Backup Over Power	1. Verify that the total load on the backup side does not exceed the inverter maximum output capacity. 2. If the issue persists, please contact your installer or our technical support team for further assistance.
E016	Fault	Inverter Over Voltage	1. Check whether there are surge loads or whether the backup load power exceeds the rated inverter output. 2. Check whether there is a short circuit on the backup side. 3. If the issue persists, please contact your installer or our technical support team for further assistance.
E017	Fault	Inverter Over Current	1. Check whether there are surge loads or whether the backup load power exceeds the rated inverter output. 2. Check whether there is a short circuit on the backup side. 3. If the issue persists, please contact your installer or our technical support team for further assistance.
E018	Fault	FLASH Fault	1. The issue may be caused by interference. Restart the inverter. 2. If the issue persists, please contact your installer or our technical support team for further assistance.
E019	Fault	SCI Fault	1. The issue may be caused by interference. Restart the inverter. 2. If the issue persists, please contact your installer or our technical support team for further assistance.
E020	Fault	SPI Fault	1. The issue may be caused by interference. Restart the inverter. 2. If the issue persists, please contact your installer or our technical support team for further assistance.
E021	Fault	E2 Fault	1. The issue may be caused by interference. Restart the inverter. 2. If the issue persists, please contact your installer or our technical support team for further assistance.
E022	Fault	GFCI Device Fault	1.Restart the inverter. 2. If the issue persists, please contact your installer or our technical support team for further assistance.
E023	Fault	AC Transducer Fault	1. Restart the inverter. 2. If the issue persists, please contact your installer or our technical support team for further assistance.
E024	Fault	Relay Check Fail	1. Use a multimeter to measure the voltage between the neutral and ground wires. If the voltage exceeds 10 V, it indicates an abnormal connection on the grid side neutral or ground line. 2.Restart the inverter. 3. If the issue persists, please contact your installer or our technical support team for further assistance.
E025	Fault	Internal Fan Fault	1.Restart the inverter. 2. If the issue persists, please contact your installer or our technical support team for further assistance.
E026	Fault	External Fan Fault	1. Check whether the fan is blocked by foreign objects. If so, clean it. 2. If the issue persists, please contact your installer or our technical support team for further assistance.
E027	Fault	Comm. Sampling Fault	1. Restart the inverter. 2. If the issue persists, please contact your installer or our technical support team for further assistance.
E028	Fault	DC BUS Voltage Low	1.Check whether the DC voltage is normal. 2. If the issue persists, please contact your installer or our technical support team for further assistance.
E029	Fault	Meter Comm Fault	Inverter–meter communication error detected. 1. Check whether the communication cable between the inverter and the meter is properly connected. 2. Verify that the energy meter model is compatible. 3. If the issue persists, please contact your installer or our technical support team for further assistance.
E030	Fault	DC Arc Fault	1. Check the PV side for loose terminals or damaged cables that may cause arcing. 2.Restart the inverter. 3. If the issue persists, please contact your installer or our technical support team for further assistance.
E031	Fault	AFCI Comm Fault	1. The issue may be caused by interference. Restart the inverter. 2. If the issue persists, please contact your installer or our technical support team for further assistance.
E032	Fault	Bus Voltage Hard Fault	1. Check whether the DC input voltage exceeds the inverter maximum operating voltage. 2. If the issue persists, please contact your installer or our technical support team for further assistance.
E033	Fault	DC BUS Voltage Unbalance	1.Restart the inverter. 2. If the issue persists, please contact your installer or our technical support team for further assistance.
E034	Fault	Backup Over Current	1.Restart the inverter. 2. If the issue persists, please contact your installer or our technical support team for further assistance.
E035	Fault	Backup Box Fault	1. Check whether the backup box(EDA) is connected correctly. If it is not connected, disable the backup box detection function. 2. If the issue persists, please contact your installer or our technical support team for further assistance.
E037	Fault	Phase Order Err	1. Check whether the grid wiring matches the configured phase sequence. 2. If the issue persists, please contact your installer or our technical support team for further assistance.
E038	Fault	Third-party Meter Comm Fault	1. Check the communication cable between the inverter and the meter. 2. Verify that the energy meter model is compatible. 3. If the issue persists, please contact your installer or our technical support team for further assistance.
W001	Warning	Other Faults	1. Restart the inverter. 2. If the issue persists, please contact your installer or our technical support team for further assistance.
W002	Warning	PV Power Low	1. Check whether the PV connection and PV energy generation are normal. 2. Check the battery operating status and confirm that the battery output capability is not limited. 3. If the issue persists, please contact your installer or our technical support team for further assistance.
W003	Warning	BAT Power Low	When off-grid or during grid disconnection, if the battery status is abnormal or unable to supply power: 1. Check battery power cable connections. 2. Check the battery circuit breaker, switch, or fuse. 3. Check for alarms or protections and restart the battery after resolving the issue. 4. If the issue persists, please contact your installer or our technical support team for further assistance.
W004	Warning	DC BUS Voltage Unblance	1.Restart the inverter. 2.If the issue persists, please contact your installer or our technical support team for further assistance.
W005	Warning	Phase Lock Fault	1. Check whether the grid connection is correct. 2. If the issue persists, please contact your installer or our technical support team for further assistance.
W006	Warning	BAT Invalid	When off-grid or during grid disconnection, if the battery status is abnormal or unable to supply power: 1. Check battery power cable connections. 2. Check the battery circuit breaker, switch, or fuse. 3. Check for alarms or protections and restart the battery after resolving the issue. 4. If the issue persists, please contact your installer or our technical support team for further assistance.
W007	Warning	High-impedance Control Fault	1. High impedance in cables or the system may cause three-phase unbalance oscillation. Disable the three-phase unbalance function. 2. If the issue persists, please contact your installer or our technical support team for further assistance.
W008	Warning	Comm Cmd Off	1. The inverter may have stopped due to E-stop, watchdog, RCR, or DRM commands. Check related settings and command statuses. 2. If the issue persists, please contact your installer or our technical support team for further assistance.
W009	Warning	Meter Comm Fail	1. Check the communication cable between the inverter and the meter. 2. If the issue persists, please contact your installer or our technical support team for further assistance.

EV Charger Alarms (23)

Code	Type	Name	Solution
E300	Fault	Emergency button has been pressed	1. Please remove the charge gun out of the door and rotate the emergency button clockwise to recover. If LED light indicator changes to green or blue, the fault has been recovered. 2. If the issue persists, please contact your installer or our technical support team for further assistance.
E301	Fault	Emergency button has been pressed	1. Please remove the charge gun out of the door and rotate the emergency button clockwise to recover. If LED light indicator changes to green or blue, the fault has been recovered. 2. If the issue persists, please contact your installer or our technical support team for further assistance.
E302	Fault	Grounding Fault	EV charger station has not been properly grounded. 1. Please contact your installer or our technical support team to measure voltage between N line and PE line: Proper grounding:[0,40]V Poor grounding:[40,90]V Ungrounded:[90,130]V Line L & N reversed and poor grounding:[130,180]V Line L & N reversed:[180,220]V
E303	Fault	Charge Port Door Open	Please contact your installer or our technical support team for further assistance.
E304	Fault	CP Error	1. Please check if there is any damage of charger cable. 2. Re-plug in the charge gun to make sure the well contact between gun and EV. 3. Charge another EV to check if somethign wrong with the charge gun. 4. If the issue persists, please contact your installer or our technical support team for further assistance.
E305	Fault	Meter Error	Hardware issue. 1. Please contact technical support to check meter chip and its circuit.
E306	Fault	Under Voltage	AC input voltage < 150V. 1. Please contact technical support to check if distribution system is normal. If necessary, contact local utility institution.
E307	Fault	Over Voltage	AC input voltage > 275V. 1. Please contact technical support to check if distribution system is normal. If necessary, contact local utility institution.
E308	Fault	Relay Sticking	Hardware issue. 1. Please contact contact your installer or our technical support team for further assistance.
E309	Fault	GFCI Protection	1. Please check if there is any damage of charger cable. 2. Please check if any shortage of PE in EV. 3. Charge another EV to check if somethign wrong with the charge gun. 4. If the issue persists, please contact your installer or our technical support team for further assistance.
E310	Fault	Over Current	Charging current is greater than the one allowed by EV charger. 1. Please reduce min. charging current allowed by EV. Make sure it's smaller than the one allowed by EV charger.
E311	Fault	Communication Fault with Inverter	1. Please check if the connection between inverter and EV charger is well and proper. 2. Please ensure that EV charger is compatible with the inverter. 3. If the issue persists, please contact your installer or our technical support team for further assistance.
E312	Fault	Other Faults	Please contact your installer or our technical support team for further assistance.
E313	Fault	Main Circuit Breaker Trip Protection	Due to the current out of breaker rated range, EV charger stops charging 3 times during 30 minutes. 1. The system would keep monitoring surplus power in following 30 minutes. If surplus power can support restart of EV charger, EV charger would restart charging the car with the min power and alarm would be removed automatically. 2. If the issue persists, please contact your installer or our technical support team for further assistance.
E314	Fault	Communication Fault of Partial DC Power Modules	Please contact your installer or our technical support team for further assistance.
E315	Fault	Communication Fault of All DC Power Modules	Please contact your installer or our technical support team for further assistance.
E316	Fault	Over Temperature	Excessive ambient temperature or a short circuit. 1. Please make sure EV charger is sheltered to avoid direct sunlight. 2. Please make sure EV charger station away from heat source. 3. Please ensure ambient temperature lower than 40℃. 4. Please restart EV charger if ambient temperature lower than 40℃ and check if the issue has been recovered after 1 min. 5. If the issue persists, please contact your installer or our technical support team for further assistance.
W301	Warning	EVC Power Limited for INV Abnormality	Due to the INV abnormality, EV charger reports corresponding alarm and charges EV under pre-set strategy. 1. EV charger will operate under pre-set strategy until inverter recovers. 2. If the issue persists, please contact your installer or our technical support team for further assistance.
W300 W304	Warning	System Overcurrent Warning	EV charger stops charging due to the home load and EV charging power exceed the breaker rated power. 1. In green mode with grid able, if it occurs 1 or 2 times within 30 minutes, the system will continuously monitor the available residual power within 30 minutes after charging stop. When there is sufficient power the charging process will be restarted automatically at the minimum charging power. The alarm is cleared simultaneously. 2. In fast mode, charging process will be restarted automatically once there is sufficient power. The alarm is cleared simultaneously. 3. If the issue persists, please contact your installer or our technical support team for further assistance.
W305	Warning	EVC Charging not Available	The charging process can't be started due to insufficient remaining system power. 1.The charging process can be started once the system remaining power is sufficient. The alarm is cleared simultaneously. 2.If the issue persists, please contact your installer or our technical support team for further assistance.
W306	Warning	Green Power Insufficient	In Green mode with grid disable, the system available power can't meet the minimum charging power. 1. The charging process will be restarted when PV and Battery power is sufficient. The alarm is cleared simultaneously. 2. If the issue persists, please contact your installer or our technical support team for further assistance.
I300	Info	Vehicle Disconnection	Due to the protection strategy of EV during charging, EV charger suspends charging. 1. EV charger will continue charging once EV protection removed. 2. If the issue persists, please contact your installer or our technical support team for further assistance.
I301	Info	EVC Charging Interrupted	Due to the abnormal issues (such as poor contact, unplugging the gun,etc.), EV charger stops charging. 1. Re-start the charging after confirmation of the contact and connection. 2. If the issue persists, please contact your installer or our technical support team for further assistance.

Battery Alarms (138)

Code	Type	Name	Solution
E400	Fault	BMS Comm Fault -BAT1	Inverter–BMS communication error detected. 1. Check if battery model is correctly selected. 2. Check if comm. connection and line sequence of BMS and inverter is properly. 3. Check if the battery is under normal status. 4. If the issue persists, please contact your installer or our technical support team for further assistance.
E431	Fault	Abnormal Battery Voltage -BAT1	There is significant deviation between battery voltage measured by inverter and that reported by the BMS . 1. Check if battery power cables are properly and securely connected. 2. Check if battery circuit breaker, switch, or fuse is abnormal. 3. Check if battery under alarm or protection. Clear faults and reboot the battery after reinstallation or rebooting. 4. If the issue persists, please contact your installer or our technical support team for further assistance.
E432	Fault	Abnormal BAT Parallel No. -BAT1
E489	Fault	BMS Comm Fault -BAT2
E490	Fault	Abnormal Battery Voltage -BAT2
E491	Fault	Abnormal BAT Parallel No. -BAT2
E404	Fault	BAT Voltage Sensor Fault	1. Reboot the battery. 2. If the issue persists, please contact your installer or our technical support team for further assistance.
E405	Fault	BAT Temp. Sensor Fault	1. Reboot the battery. 2. If the issue persists, please contact your installer or our technical support team for further assistance.
E406	Fault	BAT Internal Comm Fault	There might be something wrong with battery internal comm. circuit. 1. Check comm. cable between battery module and controller. 2. Reboot the battery. 3. If the issue persists, please contact your installer or our technical support team for further assistance.
E407	Fault	Input OV Fault	Input voltage on battery is too high. 1. Check if power cables are incorrectly connected to other source. 2. Check if there is malfunction of inverter. 3. If the issue persists, please contact your installer or our technical support team for further assistance.
E408	Fault	Input Reversed or Short Fault	Input polarity is reversed. 1. Check if power cables are reversely connected. 2. Check if there is malfunction of inverter. 3. If the issue persists, please contact your installer or our technical support team for further assistance.
E409	Fault	Control Device Check Fault	There might be something wrong with battery relay. 1. Reboot the battery. 2. If the issue persists, please contact your installer or our technical support team for further assistance.
E410	Fault	Cell Damaged Fault	Cell is severely over-discharged. 1. Reboot the battery. 2. If the issue persists, please contact your installer or our technical support team for further assistance.
E411	Fault	Shutdown Circuit Fault	Can not switch off the system. 1. Reboot the battery. 2. If the issue persists, please contact your installer or our technical support team for further assistance.
E412	Fault	BMIC Fault	Sensor chip is abnormal. 1. Reboot the battery. 2. If the issue persists, please contact your installer or our technical support team for further assistance.
E413	Fault	BAT Internal Bus Fault	1. Reboot the battery. 2. If the issue persists, please contact your installer or our technical support team for further assistance.
E414	Fault	Self-checking Fault	Self-checking failed. 1. Reboot the battery. 2. If the issue persists, please contact your installer or our technical support team for further assistance.
E415	Fault	Safety Function Fault	Chip self-checking failed. 1. Reboot the battery. 2. If the issue persists, please contact your installer or our technical support team for further assistance.
E416	Fault	ISO Fault	Isolation is too low. 1. Turn off the whole system. 2. Check if any damage or breakage in devices, cables, terminals, etc. 3. Check if any circuit shorted by foreign matters. 4. Reboot battery after removing anomalies. 5. If the issue persists, please contact your installer or our technical support team for further assistance.
E492	Fault
E493	Fault
E487	Fault	Fatal Error	Fatal error in battery system. Please contact your installer or battery manufacturer for further assistance immediately.
E417	Fault	Cell UV	1. Check if there is any malfunction or incorrect configuration of inverter, which leads to inexecution of forced-charging or unstopped discharging. 2. Check if the external source (PV, utility grid, diesel generator, etc.) stop working, which leads to inexecution of forced-charging or unstopped discharging. 3. Check if there is obvious cell voltaqe deviation.If there is obvious cell voltaqe deviation,fully charge and discharge the battery for several times. 4. Reboot and then charge the battery immediately. 5. If the issue persists, please contact your installer or our technical support team for further assistance.
E418	Fault	Cell OV	1. Check if there is any malfunction or incorrect configuration of inverter, which leads to inexecution of forced-discharging or inexecution protection according to charging voltage limitation. 2. Check if any unsuitable setting and/or configuration , which leads to inexecution of forced-discharging or inexecution protection according to charging voltage limitation. 3. Reboot and then discharge the battery immediately. 4. If the issue persists, please contact your installer or our technical support team for further assistance.
E419	Fault	Cluster UV	1. Check if there is any malfunction or incorrect configuration of inverter, which leads to inexecution of forced-charging or unstopped discharging. 2. Check if the external source (PV, utility grid, diesel generator, etc.) stop working, which leads to inexecution of forced-charging or unstopped discharging. 3. Check if load power is oversized. 4. Reboot and then charge the battery immediately. 5. If the issue persists, please contact your installer or our technical support team for further assistance.
E420	Fault	Cluster OV	1. Check if there is any malfunction or incorrect configuration of inverter, which leads to inexecution of forced-discharging or inexecution protection according to charging voltage limitation. 2. Check any unsuitable setting and/or configuration , which leads to inexecution of forced-discharging or inexecution protection according to charging voltage limitation. 3. Reboot and then discharge the battery immediately. 4. If the issue persists, please contact your installer or our technical support team for further assistance.
E421	Fault	Charge UT	1. Check if battery temp. is reasonable. 2. Check if any malfunction of temp. sensors. 3. Increase the enviroment temp. to warm up battery and then reboot the battery. 4. If the issue persists, please contact your installer or our technical support team for further assistance.
E422	Fault	Charge OT	1. Check if battery temp. is reasonable. 2. Check if any malfunction of temp. sensors. 3. Reduce the enviroment temp. to cool down battery and then reboot the battery. 4. If the issue persists, please contact your installer or our technical support team for further assistance.
E423	Fault	Discharge UT	1. Check if battery temp. is reasonable. 2. Check if any malfunction of temp. sensors. 3. Increase the enviroment temp. to warm up battery and then reboot the battery. 4. If the issue persists, please contact your installer or our technical support team for further assistance.
E424	Fault	Discharge OT	1. Check if battery temp. is reasonable. 2. Check if any malfunction of temp. sensors. 3. Reduce the enviroment temp. to cool down battery and then reboot the battery. 4. If the issue persists, please contact your installer or our technical support team for further assistance.
E425	Fault	Charge OC	1. Check if current limitation of battery decreases cause of temp, SOC, etc 2. Check if inverter does not charge according to current limitation. 3. Reboot battery after checking or adjusting configuration of inverter. 4. If the issue persists, please contact your installer or our technical support team for further assistance.
E426	Fault	Discharge OC	1. Check if current limitation of battery decreases cause of temp, SOC, etc. 2. Check if inverter does not discharge according to current limitation. 3. Reboot battery after checking or adjusting configuration of inverter. 4. If the issue persists, please contact your installer or our technical support team for further assistance.
E427	Fault	Battery Module UV	1. Check if there is any malfunction or incorrect configuration of inverter, which leads to inexecution of forced-charging or unstopped discharging. 2. Check if the external source (PV, utility grid, diesel generator, etc.) stop working, which leads to inexecution of forced-charging or unstopped discharging. 3. Reboot and then charge the battery immediately. 4. If the issue persists, please contact your installer or our technical support team for further assistance.
E428	Fault	Battery Module OV	1. Check if there is any malfunction or incorrect configuration of inverter, which leads to inexecution of forced-discharging or inexecution protection according to charging voltage limitation. 2. Check if any unsuitable setting and/or configuration , which leads to inexecution of forced-discharging or inexecution protection according to charging voltage limitation. 3. Reboot and then discharge the battery immediately. 4. If the issue persists, please contact your installer or our technical support team for further assistance.
E429	Fault	Heater OT-L3	1. Check if terminal temp. is reasonable. 2. Check if any malfunction of temp. sensors. 3. Reduce the enviroment temp. to cool down terminal and then reboot the battery. 4. If the issue persists, please contact your installer or our technical support team for further assistance.
E430	Fault	Abnormal Leakage	1. Turn off the whole system. 2. Check if any damage or breakage in devices, cables, terminals, etc. 3. Check if any circuit shorted by foreign matters. 4. Reboot battery after removing anomalies. 5. If the issue persists, please contact your installer or our technical support team for further assistance.
E488	Fault	Severe Error	Fatal error in battery system. Please contact your installer or battery manufacturer for further assistance immediately.
I400	Info	Cell UV	1. Check if there is any malfunction or incorrect configuration of inverter, which leads to inexecution of forced-charging or unstopped discharging. 2. Check if the external source (PV, utility grid, diesel generator, etc.) stop working, which leads to inexecution of forced-charging or unstopped discharging. 3. Check if there is obvious cell voltaqe deviation.If there is obvious cell voltaqe deviation,fully charge and discharge the battery for several times. 4. Reboot and then charge the battery immediately. 5. If the issue persists, please contact your installer or our technical support team for further assistance.
I401	Info	Cell OV	1. Check if there is any malfunction or incorrect configuration of inverter, which leads to inexecution of forced-discharging or inexecution protection according to charging voltage limitation. 2. Check if any unsuitable setting and/or configuration , which leads to inexecution of forced-discharging or inexecution protection according to charging voltage limitation. 3. Reboot and then discharge the battery immediately. 4. If the issue persists, please contact your installer or our technical support team for further assistance.
I402	Info	Cluster UV	1. Check if there is any malfunction or incorrect configuration of inverter, which leads to inexecution of forced-charging or unstopped discharging. 2. Check if the external source (PV, utility grid, diesel generator, etc.) stop working, which leads to inexecution of forced-charging or unstopped discharging. 3. Check if load power is oversized. 4. Reboot and then charge the battery immediately. 5. If the issue persists, please contact your installer or our technical support team for further assistance.
I403	Info	Cluster OV	1. Check if there is any malfunction or incorrect configuration of inverter, which leads to inexecution of forced-discharging or inexecution protection according to charging voltage limitation. 2. Check if any unsuitable setting and/or configuration , which leads to inexecution of forced-discharging or inexecution protection according to charging voltage limitation. 3. Reboot and then discharge the battery immediately. 4. If the issue persists, please contact your installer or our technical support team for further assistance.
I404	Info	Charge UT	1. Check if battery temp. is reasonable. 2. Check if any malfunction of temp. sensors. 3. Increase the enviroment temp. to warm up battery and then reboot the battery. 4. If the issue persists, please contact your installer or our technical support team for further assistance.
I405	Info	Charge OT	1. Check if battery temp. is reasonable. 2. Check if any malfunction of temp. sensors. 3. Reduce the enviroment temp. to cool down battery and then reboot the battery. 4. If the issue persists, please contact your installer or our technical support team for further assistance.
I406	Info	Discharge UT	1. Check if battery temp. is reasonable. 2. Check if any malfunction of temp. sensors. 3. Increase the enviroment temp. to warm up battery and then reboot the battery. 4. If the issue persists, please contact your installer or our technical support team for further assistance.
I407	Info	Discharge OT	1. Check if battery temp. is reasonable. 2. Check if any malfunction of temp. sensors. 3. Reduce the enviroment temp. to cool down battery and then reboot the battery. 4. If the issue persists, please contact your installer or our technical support team for further assistance.
I408	Info	Charge OC	1. Check if current limitation of battery decreases cause of temp, SOC, etc. 2. Check if inverter does not charge according to current limitation. 3. Reboot battery after checking or adjusting configuration of inverter. 4. If the issue persists, please contact your installer or our technical support team for further assistance.
I409	Info	Discharge OC	1. Check if current limitation of battery decreases cause of temp, SOC, etc. 2. Check if inverter does not discharge according to current limitation. 3. Reboot battery after checking or adjusting configuration of inverter. 4. If the issue persists, please contact your installer or our technical support team for further assistance.
I410	Info	Battery Module UV	1. Check if there is any malfunction or incorrect configuration of inverter, which leads to inexecution of forced-charging or unstopped discharging. 2. Check if the external source (PV, utility grid, diesel generator, etc.) stop working, which leads to inexecution of forced-charging or unstopped discharging. 3. Reboot and then charge the battery immediately. 4. If the issue persists, please contact your installer or our technical support team for further assistance.
I411	Info	Battery Module OV	1. Check if there is any malfunction or incorrect configuration of inverter, which leads to inexecution of forced-discharging or inexecution protection according to charging voltage limitation. 2. Check if any unsuitable setting and/or configuration , which leads to inexecution of forced-discharging or inexecution protection according to charging voltage limitation. 3. Reboot and then discharge the battery immediately. 4. If the issue persists, please contact your installer or our technical support team for further assistance.
I412	Info	Terminal OT	1. Check if terminal temp. is reasonable. 2. Check if any malfunction of temp. sensors. 3. Reduce the enviroment temp. to cool down terminal and then reboot the battery. 4. If the issue persists, please contact your installer or our technical support team for further assistance.
I413	Info	Abnormal Fan	Fan of battery module is abnormal. 1. Turn off the battery and check if power cable of fan is connected correctly. 2. If the issue persists, please contact your installer or our technical support team for further assistance.
I414	Info	Abnormal Leakage	1. Turn off the whole system. 2. Check if any damage or breakage in devices, cables, terminals, etc. 3. Check if any circuit shorted by foreign matters. 4. Reboot battery after removing anomalies. 5. If the issue persists, please contact your installer or our technical support team for further assistance.
I416	—	Heater OT-L1
I415	Info	General Info.	Tips of battery systerm status. Nothing needs to processed.
W400	Warning	Cell UV	1. Check if there is any malfunction or incorrect configuration of inverter, which leads to inexecution of forced-charging or unstopped discharging. 2. Check if the external source (PV, utility grid, diesel generator, etc.) stop working, which leads to inexecution of forced-charging or unstopped discharging. 3. Check if there is obvious cell voltaqe deviation.If there is obvious cell voltaqe deviation,fully charge and discharge the battery for several times. 4. Reboot and then charge the battery immediately. 5. If the issue persists, please contact your installer or our technical support team for further assistance.
W401	Warning	Cell OV	1. Check if there is any malfunction or incorrect configuration of inverter, which leads to inexecution of forced-discharging or inexecution protection according to charging voltage limitation. 2. Check if any unsuitable setting and/or configuration , which leads to inexecution of forced-discharging or inexecution protection according to charging voltage limitation. 3. Reboot and then discharge the battery immediately. 4. If the issue persists, please contact your installer or our technical support team for further assistance.
W402	Warning	Cluster UV	1. Check if there is any malfunction or incorrect configuration of inverter, which leads to inexecution of forced-charging or unstopped discharging. 2. Check if the external source (PV, utility grid, diesel generator, etc.) stop working, which leads to inexecution of forced-charging or unstopped discharging. 3. Check if load power is oversized. 4. Reboot and then charge the battery immediately. 5. If the issue persists, please contact your installer or our technical support team for further assistance.
W403	Warning	Cluster OV	1. Check if there is any malfunction or incorrect configuration of inverter, which leads to inexecution of forced-discharging or inexecution protection according to charging voltage limitation. 2. Check if any unsuitable setting and/or configuration , which leads to inexecution of forced-discharging or inexecution protection according to charging voltage limitation. 3. Reboot and then discharge the battery immediately. 4. If the issue persists, please contact your installer or our technical support team for further assistance.
W404	Warning	Charge UT	1. Check if battery temp. is reasonable. 2. Check if any malfunction of temp. sensors. 3. Increase the enviroment temp. to warm up battery and then reboot the battery. 4. If the issue persists, please contact your installer or our technical support team for further assistance.
W405	Warning	Charge OT	1. Check if battery temp. is reasonable. 2. Check if any malfunction of temp. sensors. 3. Reduce the enviroment temp. to cool down battery and then reboot the battery. 4. If the issue persists, please contact your installer or our technical support team for further assistance.
W406	Warning	Discharge UT	1. Check if battery temp. is reasonable. 2. Check if any malfunction of temp. sensors. 3. Increase the enviroment temp. to warm up battery and then reboot the battery. 4. If the issue persists, please contact your installer or our technical support team for further assistance.
W407	Warning	Discharge OT	1. Check if battery temp. is reasonable. 2. Check if any malfunction of temp. sensors. 3. Reduce the enviroment temp. to cool down battery and then reboot the battery. 4. If the issue persists, please contact your installer or our technical support team for further assistance.
W408	Warning	Charge OC	1. Check if current limitation of battery decreases cause of temp, SOC, etc. 2. Check if inverter does not charge according to current limitation. 3. Reboot battery after checking or adjusting configuration of inverter. 4. If the issue persists, please contact your installer or our technical support team for further assistance.
W409	Warning	Discharge OC	1. Check if current limitation of battery decreases cause of temp, SOC, etc. 2. Check if inverter does not discharge according to current limitation. 3. Reboot battery after checking or adjusting configuration of inverter. 4. If the issue persists, please contact your installer or our technical support team for further assistance.
W410	Warning	Battery Module UV	1. Check if there is any malfunction or incorrect configuration of inverter, which leads to inexecution of forced-charging or unstopped discharging. 2. Check if the external source (PV, utility grid, diesel generator, etc.) stop working, which leads to inexecution of forced-charging or unstopped discharging. 3. Reboot and then charge the battery immediately. 4. If the issue persists, please contact your installer or our technical support team for further assistance.
W411	Warning	Battery Module OV	1. Check if there is any malfunction or incorrect configuration of inverter, which leads to inexecution of forced-discharging or inexecution protection according to charging voltage limitation. 2. Check if any unsuitable setting and/or configuration , which leads to inexecution of forced-discharging or inexecution protection according to charging voltage limitation. 3. Reboot and then discharge the battery immediately. 4. If the issue persists, please contact your installer or our technical support team for further assistance.
W412	Warning	BMU Offline	BMU in battery module is offline. 1. Turn off the battery system. 2. Please contact your installer or our technical support team for further assistance.
W413	Warning	BMCU Offline	BMCU in controller is offline. 1. Turn off the battery system. 2. Please contact your installer or our technical support team for further assistance.
W414	Warning	SN Change of Module	Battery module(s) changed. 1. Check if any battery module is removed or added. 2. Check if SOC and voltage of all the battery modules are the same when added. 3. Please contact your installer or our technical support team for further assistance.
W415	Warning	Abnormal Change of Cluster Voltage	1. Check if power cable is connected correctly. 2. Check if abnormal change of voltage and SOC. 3. Reboot battery after removing anomalies. 4. If the issue persists, please contact your installer or our technical support team for further assistance.
W416	Warning	Abnormal Cluster △V	1. Check if power cable is connected correctly. 2. Check if abnormal change of voltage and SOC. 3. Check if battery mode and number in each cluster is the same. 4. Reboot battery after removing anomalies. 5. If the issue persists, please contact your installer or our technical support team for further assistance.
W417	Warning	Abnormal Module △V	1. Check if power cable is connected correctly. 2. Check if abnormal change of voltage and SOC. 3. Reboot battery after removing anomalies. 4. If the issue persists, please contact your installer or our technical support team for further assistance.
W425	Warning	Heating Circuit Temperature Sensor Error	1. Reboot the battery. 2. If the issue persists, please contact your installer or our technical support team for further assistance.
W426	Warning	Heating Circuit Checking Error	1. Reboot the battery. 2. If the issue persists, please contact your installer or our technical support team for further assistance.
W427	Warning	Abnormal Voltage of Heating Ciruit	1. Reboot the battery. 2. If the issue persists, please contact your installer or our technical support team for further assistance.
W429	Warning	Heater OT-L2
W428	Warning	General Warning	General Warning for battery system, which might lead to performance limitation. Please contact your installer or battery manufacturer for further assistance immediately.
E433	Fault	Fire Alarm	Presence of fire, smoke,or other fire-related emergencies are detected. Immediately ensure all on-site systems enter E-stop and check the alarm validity. If alarm is TRUE: 1. Evacuate all non-essential personnel at once. 2. Contact qualified technicians or fire-rescue immediately. 3. Establish an isolation perimeter without delay.
E434	Fault	Flooding Alarm	There is too much water accumulated in the system, which triggers the flood alarm. Immediately ensure all on-site systems enter E-stop and check the alarm validity. If alarm is TRUE: 1. Evacuate all non-essential personnel at once. 2. Contact qualified technicians or fire-rescue immediately. 3. Establish an isolation perimeter without delay.
E435	Fault	Acess Alarm	Access control detect the disclosure of cabinet door. 1. Check if the cabinet door is opened without authorization. if it is an unauthorized opening, close the door with confirmation of the safety of on-site personnel and system. 2. Check if the access control is functioning normally. if there is faulty, replace it immediately.
E436	Fault	Emergency Stop	System emergency stop is triggered manually or automatically due to the present or potential hazard to system or personnel. 1. Check if there is present and/or potentional hazard to personnel or system. If it is true, excute those solutions of corresponding alarm. 2. Check if emergency-stop was activated accidentally. If it was a false trigger, reset the E-stop with confirmation of the safety of on-site personnel and system.
E437	Fault	UPS Battery Damaged	UPS battery has been damaged due to misuse or other causes. 1. Reboot the UPS. 2. If problem remains, contact manufacturer after-sales for solution.
E438	Fault	UPS OT	UPS is over temperature due to operating environment,overcurrent, etc. 1. Check if UPS temperature is reasonable. 2. Check if any malfunction of temp. sensors. 3. Reduce the charging current or decrease the load power. 4. Reduce the enviroment temp. to cool down UPS.
E439	Fault	Abnormal Extinguisher Comm.	1. Check if any damage in comm. cables or ports. 2. Check on-site wiring and comm. settings are correct. 3. Check if any magnetic interference is present. 4. Reboot the system. 5. If the issue persists, please contact your installer or our technical support team for further assistance.
E440	Fault	Abnormal Air Conditioner Alarm	1. Check if any damage in the air conditioner. 2. Check the error code on the panel of air conditioner. 3. Check if any malfunction of temp. sensors. 4. Check if any magnetic interference is present. 5. Reboot the system. 6. If the issue persists, please contact your installer or our technical support team for further assistance.
E441	Fault	Abnormal EMS-BMS Comm.	1. Check correct selection of battery ID. 2. Check the working status of battery. 3. Check if any damage in comm. cables or ports. 4. Check on-site wiring and comm. settings are correct. 5. Check if any magnetic interference is present. 6. Reboot the system. 7. If the issue persists, please contact your installer or our technical support team for further assistance.
E442	Fault	Abnormal EMS-Fire-SYS Comm.	1. Check if any damage in comm. cables or ports. 2. Check on-site wiring and comm. settings are correct. 3. Check if any magnetic interference is present. 4. Reboot the system. 5. If the issue persists, please contact your installer or our technical support team for further assistance.
E443	Fault	Abnormal EMS-Air Conditioner Comm.	1. Check if any damage in comm. cables or ports. 2. Check on-site wiring and comm. settings are correct. 3. Check if any magnetic interference is present. 4. Reboot the system. 5. If the issue persists, please contact your installer or our technical support team for further assistance.
E444	Fault	Cell UV-L3	1. Check if there is any malfunction or incorrect configuration of inverter, which leads to inexecution of forced-charging or unstopped discharging. 2. Check if the external source (PV, utility grid, diesel generator, etc.) stop working, which leads to inexecution of forced-charging or unstopped discharging. 3. Check if there is obvious cell voltaqe deviation.If there is obvious cell voltaqe deviation,fully charge and discharge the battery for several times. 4. Reboot and then charge the battery immediately. 5. If the issue persists, please contact your installer or our technical support team for further assistance.
E445	Fault	Cell OV-L3	1. Check if there is any malfunction or incorrect configuration of inverter, which leads to inexecution of forced-discharging or inexecution protection according to charging voltage limitation. 2. Check if any unsuitable setting and/or configuration , which leads to inexecution of forced-discharging or inexecution protection according to charging voltage limitation. 3. Reboot and then discharge the battery immediately. 4. If the issue persists, please contact your installer or our technical support team for further assistance.
E446	Fault	Cluster UV-L3	1. Check if there is any malfunction or incorrect configuration of inverter, which leads to inexecution of forced-charging or unstopped discharging. 2. Check if the external source (PV, utility grid, diesel generator, etc.) stop working, which leads to inexecution of forced-charging or unstopped discharging. 3. Check if load power is oversized. 4. Reboot and then charge the battery immediately. 5. If the issue persists, please contact your installer or our technical support team for further assistance.
E447	Fault	Cluster OV-L3	1. Check if there is any malfunction or incorrect configuration of inverter, which leads to inexecution of forced-discharging or inexecution protection according to charging voltage limitation. 2. Check if any unsuitable setting and/or configuration , which leads to inexecution of forced-discharging or inexecution protection according to charging voltage limitation. 3. Reboot and then discharge the battery immediately. 4. If the issue persists, please contact your installer or our technical support team for further assistance.
E448	Fault	Charge UT-L3	1. Check if battery temp. is reasonable. 2. Check if any malfunction of temp. sensors. 3. Increase the enviroment temp. to warm up battery and then reboot the battery. 4. If the issue persists, please contact your installer or our technical support team for further assistance.
E449	Fault	Charge OT-L3	1. Check if battery temp. is reasonable. 2. Check if any malfunction of temp. sensors. 3. Reduce the enviroment temp. to cool down battery and then reboot the battery. 4. If the issue persists, please contact your installer or our technical support team for further assistance.
E450	Fault	Discharge UT-L3	1. Check if battery temp. is reasonable. 2. Check if any malfunction of temp. sensors. 3. Increase the enviroment temp. to warm up battery and then reboot the battery. 4. If the issue persists, please contact your installer or our technical support team for further assistance.
E451	Fault	Discharge OT-L3	1. Check if battery temp. is reasonable. 2. Check if any malfunction of temp. sensors. 3. Reduce the enviroment temp. to cool down battery and then reboot the battery. 4. If the issue persists, please contact your installer or our technical support team for further assistance.
E452	Fault	Charge OC-L3	1. Check if current limitation of battery decreases cause of temp, SOC, etc. 2. Check if inverter does not charge according to current limitation. 3. Reboot battery after checking or adjusting configuration of inverter. 4. If the issue persists, please contact your installer or our technical support team for further assistance.
E453	Fault	Discharge OC-L3	1. Check if current limitation of battery decreases cause of temp, SOC, etc. 2. Check if inverter does not discharge according to current limitation. 3. Reboot battery after checking or adjusting configuration of inverter. 4. If the issue persists, please contact your installer or our technical support team for further assistance.
E454	Fault	Battery Module UV-L3	1. Check if there is any malfunction or incorrect configuration of inverter, which leads to inexecution of forced-charging or unstopped discharging. 2. Check if the external source (PV, utility grid, diesel generator, etc.) stop working, which leads to inexecution of forced-charging or unstopped discharging. 3. Reboot and then charge the battery immediately. 4. If the issue persists, please contact your installer or our technical support team for further assistance.
E455	Fault	Battery Module OV-L3	1. Check if there is any malfunction or incorrect configuration of inverter, which leads to inexecution of forced-discharging or inexecution protection according to charging voltage limitation. 2. Check if any unsuitable setting and/or configuration , which leads to inexecution of forced-discharging or inexecution protection according to charging voltage limitation. 3. Reboot and then discharge the battery immediately. 4. If the issue persists, please contact your installer or our technical support team for further assistance.
E456	Fault	BAT Voltage Sensor Fault	1. Reboot the battery. 2. If the issue persists, please contact your installer or our technical support team for further assistance.
E457	Fault	BAT Temp. Sensor Fault	1. Reboot the battery. 2. If the issue persists, please contact your installer or our technical support team for further assistance.
E458	Fault	BAT Internal Comm Fault	There might be something wrong with battery internal comm. circuit. 1. Check comm. cable between battery module and controller. 2. Reboot the battery. 3. If the issue persists, please contact your installer or our technical support team for further assistance.
E459	Fault	Input OV Fault	Input voltage on battery is too high. 1. Check if power cables are incorrectly connected to other source. 2. Check if there is malfunction of inverter. 3. If the issue persists, please contact your installer or our technical support team for further assistance.
E460	Fault	Input Reversed Fault	Input polarity is reversed. 1. Check if power cables are reversely connected. 2. Check if there is malfunction of inverter. 3. If the issue persists, please contact your installer or our technical support team for further assistance.
E461	Fault	P+ Relay Checking Fault	There might be something wrong with battery relay. 1. Reboot the battery. 2. If the issue persists, please contact your installer or our technical support team for further assistance.
E462	Fault	P- Relay Checking Fault	There might be something wrong with battery relay. 1. Reboot the battery. 2. If the issue persists, please contact your installer or our technical support team for further assistance.
E463	Fault	Cell Damaged Fault	Cell is severely over-discharged. 1. Reboot the battery. 2. If the issue persists, please contact your installer or our technical support team for further assistance.
E464	Fault	Shutdown Circuit Fault	Can not switch off the system. 1. Reboot the battery. 2. If the issue persists, please contact your installer or our technical support team for further assistance.
E465	Fault	BMIC Fault	Sensor chip is abnormal. 1. Reboot the battery. 2. If the issue persists, please contact your installer or our technical support team for further assistance.
E466	Fault	BAT Internal Bus Fault	Battery internal bus is abnormal. 1. Reboot the battery. 2. If the issue persists, please contact your installer or our technical support team for further assistance.
E467	Fault	Self-checking Fault	Self-checking failed. 1. Reboot the battery. 2. If the issue persists, please contact your installer or our technical support team for further assistance.
E468	Fault	Safety Function Fault	Chip self-checking failed. 1. Reboot the battery. 2. If the issue persists, please contact your installer or our technical support team for further assistance.
E469	Fault	ISO Fault	Isolation is too low. 1. Turn off the whole system. 2. Check if any damage or breakage in devices, cables, terminals, etc. 3. Check if any circuit shorted by foreign matters. 4. Reboot battery after removing anomalies. 5. If the issue persists, please contact your installer or our technical support team for further assistance.
W418	Warning	Abnormal Cluster △V	1. Check if power cable is connected correctly. 2. Check if abnormal change of voltage and SOC. 3. Check if battery mode and number in each cluster is the same. 4. Reboot battery after removing anomalies. 5. If the issue persists, please contact your installer or our technical support team for further assistance.
E470	Fault	Terminal OT	1. Check if terminal temp. is reasonable. 2. Check if any malfunction of temp. sensors. 3. Reduce the enviroment temp. to cool down terminal and then reboot the battery. 4. If the issue persists, please contact your installer or our technical support team for further assistance.
E471	Fault	CAN2 Comm. Fault	Inverter–battery BMS communication error detected. 1. Check if the selected battery model is correct. 2. Verify that communication between the BMS master and the inverter is properly established. 3. Check if the battery is in normal stauts. 4. If the issue persists, please contact your installer or our technical support team for further assistance.
E472	Fault	CAN1 Comm. Lost	Inverter–battery BMS communication error detected. 1. Check if the selected battery model is correct. 2. Verify that communication between the BMS master and the inverter is properly established. 3. Check if the battery is in normal stauts. 4. If the issue persists, please contact your installer or our technical support team for further assistance.
E473	Fault	Abnormal DCDC Switch	1. Reboot the battery. 2. If the issue persists, please contact your installer or our technical support team for further assistance.
E474	Fault	Duplicate CAN addr.	1. Reboot the battery. 2. If the issue persists, please contact your installer or our technical support team for further assistance.
E475	Fault	Cell UV-L2	1. Check if there is any malfunction or incorrect configuration of inverter, which leads to inexecution of forced-charging or unstopped discharging. 2. Check if the external source (PV, utility grid, diesel generator, etc.) stop working, which leads to inexecution of forced-charging or unstopped discharging. 3. Check if there is obvious cell voltaqe deviation.If there is obvious cell voltaqe deviation,fully charge and discharge the battery for several times. 4. Reboot and then charge the battery immediately. 5. If the issue persists, please contact your installer or our technical support team for further assistance.
E476	Fault	Cell OV-L2	1. Check if there is any malfunction or incorrect configuration of inverter, which leads to inexecution of forced-discharging or inexecution protection according to charging voltage limitation. 2. Check if any unsuitable setting and/or configuration , which leads to inexecution of forced-discharging or inexecution protection according to charging voltage limitation. 3. Reboot and then discharge the battery immediately. 4. If the issue persists, please contact your installer or our technical support team for further assistance.
E477	Fault	Cluster UV-L2	1. Check if there is any malfunction or incorrect configuration of inverter, which leads to inexecution of forced-charging or unstopped discharging. 2. Check if the external source (PV, utility grid, diesel generator, etc.) stop working, which leads to inexecution of forced-charging or unstopped discharging. 3. Check if load power is oversized. 4. Reboot and then charge the battery immediately. 5. If the issue persists, please contact your installer or our technical support team for further assistance.
E478	Fault	Cluster OV-L2	1. Check if there is any malfunction or incorrect configuration of inverter, which leads to inexecution of forced-discharging or inexecution protection according to charging voltage limitation. 2. Check if any unsuitable setting and/or configuration , which leads to inexecution of forced-discharging or inexecution protection according to charging voltage limitation. 3. Reboot and then discharge the battery immediately. 4. If the issue persists, please contact your installer or our technical support team for further assistance.
E479	Fault	Charge UT-L2	1. Check if battery temp. is reasonable. 2. Check if any malfunction of temp. sensors. 3. Increase the enviroment temp. to warm up battery and then reboot the battery. 4. If the issue persists, please contact your installer or our technical support team for further assistance.
E480	Fault	Charge OT-L2	1. Check if battery temp. is reasonable. 2. Check if any malfunction of temp. sensors. 3. Reduce the enviroment temp. to cool down battery and then reboot the battery. 4. If the issue persists, please contact your installer or our technical support team for further assistance.
E481	Fault	Discharge UT-L2	1. Check if battery temp. is reasonable. 2. Check if any malfunction of temp. sensors. 3. Increase the enviroment temp. to warm up battery and then reboot the battery. 4. If the issue persists, please contact your installer or our technical support team for further assistance.
E482	Fault	Discharge OT-L2	1. Check if battery temp. is reasonable. 2. Check if any malfunction of temp. sensors. 3. Reduce the enviroment temp. to cool down battery and then reboot the battery. 4. If the issue persists, please contact your installer or our technical support team for further assistance.
E483	Fault	Charge OC-L2	1. Check if current limitation of battery decreases cause of temp, SOC, etc. 2. Check if inverter does not charge according to current limitation. 3. Reboot battery after checking or adjusting configuration of inverter. 4. If the issue persists, please contact your installer or our technical support team for further assistance.
E484	Fault	Discharge OC-L2	1. Check if current limitation of battery decreases cause of temp, SOC, etc. 2. Check if inverter does not discharge according to current limitation. 3. Reboot battery after checking or adjusting configuration of inverter. 4. If the issue persists, please contact your installer or our technical support team for further assistance.
E485	Fault	Battery Module UV-L2	1. Check if there is any malfunction or incorrect configuration of inverter, which leads to inexecution of forced-charging or unstopped discharging. 2. Check if the external source (PV, utility grid, diesel generator, etc.) stop working, which leads to inexecution of forced-charging or unstopped discharging. 3. Reboot and then charge the battery immediately. 4. If the issue persists, please contact your installer or our technical support team for further assistance.
E486	Fault	Battery Module OV-L2	1. Check if there is any malfunction or incorrect configuration of inverter, which leads to inexecution of forced-discharging or inexecution protection according to charging voltage limitation. 2. Check if any unsuitable setting and/or configuration , which leads to inexecution of forced-discharging or inexecution protection according to charging voltage limitation. 3. Reboot and then discharge the battery immediately. 4. If the issue persists, please contact your installer or our technical support team for further assistance.
W419	Warning	Inconsistent Cell qty.	1. Check if different battery pack used. 2. Check if there is internal comm. Malfuntion in any battery pack. 3. Reboot and then discharge the battery immediately. 4. If the issue persists, please contact your installer or our technical support team for further assistance.
W420	Warning	Cluster(s) under Forced-charging	1. Check if any battery under forced-charging 2. Reboot after forced-charging finished. 3. If the issue persists, please contact your installer or our technical support team for further assistance.
W421	Warning	Cluster(s) under Upgrading	1. Check if any battery under upgrading. 2. Reboot after upgrading finished. 3. If the issue persists, please contact your installer or our technical support team for further assistance.
W422	Warning	Master Polling	1. Check if any battery under information-poll. 2. Check if it back to normal after minutes. 3. Reboot the battery. 4. If the issue persists, please contact your installer or our technical support team for further assistance.
W423	Warning	Cluster(s) turned off Manually	1. Check if any battery is turned-off manually. 2. Reboot the battery. 3. If the issue persists, please contact your installer or our technical support team for further assistance.
W424	Warning	Emergency Stop Triggered of Cluster(s)	1. Check if any battery is turned-off manually. 2. Reboot the battery. 3. If the issue persists, please contact your installer or our technical support team for further assistance.