SolarEdge Home Battery Error Codes

Complete diagnostic guide for SolarEdge Home Battery systems including Energy Bank and Energy Hub models.

Isolation and Ground Fault Errors

Error codes related to electrical isolation, ground faults, and safety system activation.

Code	Meaning	Possible Causes	Solutions
2×1	Isolation fault between PV system and ground	•Ground fault in DC wiring •Faulty panel grounding •Water intrusion in connections •Damaged insulation •Corroded connections •Isolation monitoring circuit issue	Shut down system immediately Check all DC wiring for ground faults Verify proper grounding of all components Inspect for water intrusion in connections Test isolation resistance Check for damaged insulation Contact qualified technician for repair
2×2	Ground fault detected in battery system	•Ground fault in battery wiring •Faulty battery grounding •Water intrusion •Damaged battery connections •Corroded terminals	Shut down system immediately Check battery wiring for ground faults Verify proper battery grounding Inspect for water intrusion Check battery connections Contact qualified technician for repair
2×3	Isolation fault in AC circuit	•Ground fault in AC wiring •Faulty AC grounding •Inverter AC isolation issue •Grid connection fault	Shut down system immediately Check AC wiring for ground faults Verify proper AC grounding Check inverter AC isolation Verify grid connection Contact qualified technician for repair

Arc Fault Detection Errors

Error codes related to arc fault detection, fire safety, and electrical arc protection.

Code	Meaning	Possible Causes	Solutions
3×1	Arc fault detected - potential fire hazard	•Loose connections •Damaged wiring •Corroded terminals •Faulty connectors •Series arc in DC circuit •Parallel arc in DC circuit	Shut down system immediately Do not attempt to restart Check all DC connections for looseness Inspect wiring for damage Check for corroded terminals Contact qualified technician immediately Do not bypass safety systems
3×2	Arc fault detected in battery system	•Loose battery connections •Damaged battery wiring •Faulty battery terminals •Corroded battery connections	Shut down system immediately Do not attempt to restart Check all battery connections Inspect battery wiring for damage Contact qualified technician immediately Do not bypass safety systems
3×3	Arc fault detection system fault	•Arc fault detection circuit failure •Sensor malfunction •Firmware issue •Hardware fault	Check arc fault detection system status Review system logs Contact SolarEdge support Do not disable arc fault detection Schedule service with qualified technician

Voltage Errors

Error codes related to voltage levels, overvoltage, undervoltage, and voltage regulation issues.

Code	Meaning	Possible Causes	Solutions
18×1	Grid voltage too high	•Utility grid voltage exceeds limits •Grid instability •Transformer issue •Voltage regulation failure	Check utility grid voltage Contact utility company if grid voltage is high Wait for grid to stabilize Check inverter AC voltage settings Verify grid connection Monitor grid voltage trends
18×2	Grid voltage too low	•Utility grid voltage below limits •Grid instability •Transformer issue •Voltage regulation failure	Check utility grid voltage Contact utility company if grid voltage is low Wait for grid to stabilize Check inverter AC voltage settings Verify grid connection Monitor grid voltage trends
18×B	DC voltage too high	•Too many solar panels connected •String voltage exceeds maximum •Inverter voltage rating exceeded •Faulty voltage sensor	Verify solar panel string configuration Check total DC voltage does not exceed inverter maximum Review system design and panel count Test voltage sensor Contact installer to verify system configuration Reduce string voltage if necessary
18×C	DC voltage too low	•Insufficient solar panel output •Shading on panels •Faulty panel connections •String voltage too low	Check for shading on solar panels Verify all panel connections are secure Check panel output during peak sun hours Inspect for damaged panels Verify string configuration is correct Check weather conditions affecting output
18×D	Battery voltage too high	•Battery overcharging •Charging system fault •Battery management system issue •Voltage regulation failure	Check battery charging status Verify battery management system operation Check charging system settings Monitor battery voltage Contact qualified technician if voltage remains high
18×E	Battery voltage too low	•Battery deep discharge •Battery capacity degradation •Charging system failure •Battery management system issue	Check battery state of charge Verify charging system operation Check battery capacity Monitor battery voltage Contact qualified technician if voltage remains low

Communication and Monitoring Errors

Error codes related to system communication, monitoring, and data logging issues.

Code	Meaning	Possible Causes	Solutions
COMM-001	Battery communication failure with inverter	•Communication cable disconnected •Communication module failure •Firmware mismatch •Network issue •RS485 communication fault	Check communication cable connections Verify communication module status Check firmware versions are compatible Restart inverter and battery Check RS485 communication bus Contact SolarEdge support if issue persists
COMM-002	Monitoring system offline	•Network connection lost •Monitoring device failure •Power loss to monitoring device •Server connectivity issue	Check network connection Verify monitoring device power Restart monitoring device Check WiFi/Ethernet configuration Verify internet connectivity Contact SolarEdge support
COMM-003	SetApp communication error	•Bluetooth connection issue •SetApp not connected •Mobile device compatibility •Firmware issue	Check Bluetooth is enabled Restart SetApp Verify mobile device compatibility Check firmware version Reconnect SetApp to system
DATA-001	Data logging error	•Storage full •Memory card failure •Data logging module failure •Firmware issue	Check available storage space Replace memory card if necessary Clear old data if possible Update firmware Reset data logging module Contact support for advanced troubleshooting

Battery Operation Errors

Error codes related to battery charging, discharging, capacity, and performance issues.

Code	Meaning	Possible Causes	Solutions
BATT-001	Battery not charging	•Charging disabled in settings •Battery at full capacity •Temperature protection •Grid connection issue •Solar production insufficient	Check battery charge settings in monitoring app Verify battery state of charge Check battery temperature Verify grid connection Check solar production levels Review time-of-use settings if configured
BATT-002	Battery not discharging	•Discharge disabled in settings •Battery at minimum charge •Grid available (backup mode) •Load demand insufficient •System configuration	Check battery discharge settings Verify battery state of charge Check if system is in backup mode Verify load demand Review system operating mode Check time-of-use settings
BATT-003	Battery capacity degradation detected	•Normal aging •Excessive cycling •Temperature extremes •Deep discharge cycles •Manufacturing defect	Monitor capacity trends in monitoring app Check battery age and usage patterns Review operating temperature history Contact SolarEdge support for capacity analysis Consider warranty claim if capacity is below expected
BATT-004	Battery charge/discharge rate reduced	•Temperature protection •Battery health management •System optimization •Safety limits activated	Check battery temperature Verify ventilation is adequate Review battery health status Check for any system warnings Allow system to optimize automatically
BATT-005	Battery module communication error	•Module communication failure •Module disconnected •Communication bus issue •Module firmware issue	Check battery module connections Verify module communication status Check communication bus Restart battery system Contact SolarEdge support if issue persists

Temperature and Environmental Errors

Error codes related to temperature management, ventilation, and environmental conditions.

Code	Meaning	Possible Causes	Solutions
TEMP-001	Battery temperature too high	•Ambient temperature exceeds limits •Inadequate ventilation •Installation location too hot •Cooling system issue	Check ambient temperature (operating range: -10°C to 50°C) Ensure adequate ventilation around battery Maintain minimum clearance from walls Check for obstructions blocking ventilation Consider relocating battery if temperature persists Install additional ventilation if needed
TEMP-002	Battery temperature too low	•Ambient temperature below operating range •Installation in unheated space •Extreme cold conditions	Check ambient temperature (minimum: -10°C) Verify installation location meets temperature requirements Consider heating the space if necessary Check for drafts or cold air sources Review installation location requirements
TEMP-003	Inverter temperature too high	•Inadequate ventilation •Ambient temperature too high •Inverter fan failure •Dust buildup blocking airflow	Ensure adequate ventilation around inverter Check inverter fan operation Clean dust and debris from inverter Verify inverter is not in direct sunlight Check ambient temperature Allow inverter to cool down
VENT-001	Battery ventilation inadequate	•Insufficient clearance •Obstructions blocking airflow •Enclosed space •Poor air circulation	Ensure minimum clearance on all sides Remove any obstructions Verify installation meets ventilation requirements Check for adequate air circulation Consider additional ventilation if needed

Power and Electrical Errors

Error codes related to power supply, electrical connections, and circuit protection.

Code	Meaning	Possible Causes	Solutions
PWR-001	Battery power loss detected	•Circuit breaker tripped •Power supply interruption •Electrical fault •Wiring issue •Grid outage	Check circuit breaker status Verify power supply to battery Check for tripped breakers Inspect electrical connections Verify grid connection Contact qualified electrician if electrical issues persist
PWR-002	Battery circuit breaker tripped	•Overcurrent condition •Short circuit •Ground fault •Electrical overload •Faulty component	Do not reset breaker immediately Check for obvious electrical issues Verify no short circuits Check for ground faults Contact qualified electrician before resetting Do not bypass safety systems
PWR-003	Inverter power loss	•Circuit breaker tripped •Grid outage •AC disconnect switch open •Power supply issue	Check circuit breaker status Verify grid connection Check AC disconnect switch Verify power supply Contact qualified electrician if issues persist
ELEC-001	Battery electrical connection fault	•Loose connections •Corroded terminals •Damaged wiring •Improper installation •Connection degradation	Shut down system before inspection Check all electrical connections Inspect for corrosion or damage Verify proper torque on connections Contact qualified electrician for repairs Do not attempt electrical repairs yourself

System and Safety Errors

Error codes related to system-level issues, safety systems, and critical faults.

Code	Meaning	Possible Causes	Solutions
SYS-001	Battery system fault requiring service	•Internal component failure •Firmware error •Hardware malfunction •Safety system activation	Do not attempt to repair Check monitoring app for detailed error Document error code and symptoms Contact SolarEdge support immediately Do not bypass safety systems Schedule service with qualified technician
SYS-002	Inverter system fault	•Internal component failure •Firmware error •Hardware malfunction •Safety system activation	Do not attempt to repair Check monitoring app for detailed error Document error code and symptoms Contact SolarEdge support immediately Do not bypass safety systems Schedule service with qualified technician
SAFE-001	Battery safety system activated	•Safety protection triggered •Emergency shutdown •Critical fault detected •System protection	Do not attempt to restart without diagnosis Check for obvious safety hazards Review all error codes Contact SolarEdge support Do not bypass safety systems Wait for qualified technician
FW-001	Battery firmware error	•Firmware corruption •Failed firmware update •Incompatible firmware •Software bug	Do not attempt firmware update without proper knowledge Contact SolarEdge support for firmware update Verify firmware version compatibility Follow manufacturer update procedures Contact qualified technician for assistance
FW-002	Inverter firmware error	•Firmware corruption •Failed firmware update •Incompatible firmware •Software bug	Do not attempt firmware update without proper knowledge Contact SolarEdge support for firmware update Verify firmware version compatibility Follow manufacturer update procedures Contact qualified technician for assistance

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Important Information

If you encounter persistent errors or are unable to resolve an issue using the solutions provided, contact SolarEdge customer support or a qualified solar system technician for professional assistance. Battery systems involve high voltage DC electricity, which can be extremely dangerous. Never attempt to repair electrical components, wiring, or battery modules yourself unless you are a qualified and certified technician. Different SolarEdge Home Battery models (Energy Bank, Energy Hub) may have model-specific error codes—always consult your system's documentation and the SolarEdge monitoring app for the most accurate information.

For technical support, contact SolarEdge customer service or consult a qualified solar system technician for expert assistance.

Safety Information: Battery systems operate at high voltages that can cause serious injury or death. Always shut down the system properly before any work. DC electricity from batteries is present whenever the battery is charged, even if the system is off. Never work on battery systems without proper safety equipment and training. Always follow lockout/tagout procedures. Working with battery systems requires specialized training and certification. If you are unsure about any procedure, contact a qualified technician immediately. Never bypass safety systems or attempt repairs you are not qualified to perform.

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Troubleshooting Guidelines

Common Resolution Steps

✓Check SolarEdge monitoring app for detailed error information
✓Verify system is properly shut down before any inspection
✓Check battery status indicators and LED lights
✓Verify network connection for monitoring system
✓Check battery temperature and ventilation
✓Document error codes and system status for service calls
✓Contact qualified technician for electrical issues

Prevention Strategies

✓Schedule regular professional maintenance
✓Ensure adequate battery ventilation (minimum clearance required)
✓Monitor system performance regularly through SolarEdge app
✓Maintain proper operating temperature range (-10°C to 50°C)
✓Keep system documentation accessible
✓Maintain proper network connectivity
✓Follow manufacturer maintenance schedule

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Frequently Asked Questions

What does error code 2×1 mean on my SolarEdge Home Battery?

Error code 2×1 indicates an isolation fault between the PV system and ground. This is a serious safety issue. Shut down the system immediately, check all DC wiring for ground faults, verify proper grounding of all components, inspect for water intrusion, and contact a qualified technician for repair. Do not attempt to restart the system until the issue is resolved.

What should I do if I see error code 3×1 (arc fault detected)?

Error code 3×1 indicates an arc fault has been detected, which is a potential fire hazard. Shut down the system immediately and do not attempt to restart. Check all DC connections for looseness, inspect wiring for damage, check for corroded terminals, and contact a qualified technician immediately. Never bypass safety systems.

Why is my battery showing error code 18×2 (grid voltage too low)?

Error code 18×2 indicates the utility grid voltage is below acceptable limits. Check the utility grid voltage, contact your utility company if the grid voltage is consistently low, wait for the grid to stabilize, check inverter AC voltage settings, and verify grid connection. The system will automatically reconnect when the grid voltage returns to normal.

How do I fix communication errors with my SolarEdge Home Battery?

For communication errors, check communication cable connections, verify communication module status, check firmware versions are compatible, restart inverter and battery, check RS485 communication bus, and contact SolarEdge support if the issue persists. Also verify network connectivity for monitoring system.

Why is my battery not charging?

Check battery charge settings in the monitoring app, verify battery state of charge, check battery temperature, verify grid connection, check solar production levels, and review time-of-use settings if configured. The battery may be at full capacity or charging may be disabled in settings.

How often should I maintain my SolarEdge Home Battery?

Regular maintenance helps prevent many error codes. Ensure adequate ventilation (minimum clearance required), monitor system performance regularly through the SolarEdge app, maintain proper operating temperature range, schedule professional maintenance annually, and follow manufacturer recommendations for your specific model.

Can I repair SolarEdge Home Battery systems myself?

Some basic troubleshooting like checking the monitoring app, verifying network connections, and checking status indicators can be done safely. However, all electrical work, wiring repairs, and battery repairs must be performed by qualified and certified technicians. Battery systems involve high voltage DC electricity that can be extremely dangerous. Always contact a qualified technician for electrical issues.

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Summary

Proper interpretation of SolarEdge Home Battery error codes is essential for efficient troubleshooting and maintenance. This comprehensive reference enables quick problem identification and guides appropriate response actions. SolarEdge Home Battery systems display error codes through the monitoring app and inverter display to indicate specific issues. Understanding these codes helps maintain system performance and maximizes energy storage efficiency. SolarEdge manufactures premium battery storage systems including Energy Bank and Energy Hub models, each with model-specific features and error code systems. This guide provides diagnostics and solutions for all common SolarEdge Home Battery error codes.

ℹ️For persistent errors or issues that cannot be resolved using this guide, contact SolarEdge customer support or consult a qualified solar system technician for professional assistance. Some errors may require technical support, component replacement, or specialized diagnostic equipment. Always document error codes and symptoms when contacting support for faster resolution. Note that error code formats may vary by system model and software version—always consult your specific system's documentation and the SolarEdge monitoring app for the most accurate information. Safety should always be the top priority when working with battery systems. Battery systems involve high voltage DC electricity that can cause serious injury or death. Never work on battery systems unless you are a qualified and certified technician. Always follow proper safety procedures and lockout/tagout protocols.