Guangzhou Anern Energy Technology Co., Ltd.
Solar Inverter Maintenance

Solar Inverter Maintenance

Installation Environment


  • Keep the solar power inverter installed in a clean, dry, and well-ventilated location

  • Avoid dust accumulation, direct sunlight, and heat sources

  • Ensure ventilation openings and cooling fans are not blocked


Electrical Inspection


  • Periodically check AC and DC wiring connections

  • Inspect terminals for overheating, looseness, or discoloration

  • Verify grounding connections and protective devices


Operation Monitoring


  • Observe LED indicators and display information for abnormal status

  • Check system logs or monitoring platforms for fault alarms

  • Ensure cooling fans operate normally during solar power system operation


Cleaning & Maintenance


  • Clean ventilation areas using dry air or soft brushes

  • Do not use liquid cleaners on inverter surfaces

  • Do not open the inverter enclosure unless authorized


Safety Notes


  • Disconnect all power sources before maintenance

  • Internal components may retain high voltage after shutdown

  • Repairs must be performed by qualified technicians only


Common Trouble Shooting

Fault Solution CodeFault Event DescriptionSolution
60Current feedback into
the inverter is
detected.
1. Restart the inverter.
2. Check if L/N cables are not connected reversely in all inverters.
3. For parallel system in single phase, make sure the sharing are
connected in all inverters.
For supporting three-phase system, make sure the sharing cables are
connected in the inverters in the same phase, and disconnected in the
inverters in different phases.
4. If the problem remains, please contact your installer
71The firmware version
of each inverter is not
the same.
1. Update all inverter firmware to the same version.
2. Check the version of each inverter via LCD setting and make sure the
CPU versions are same. If not, please contact your instraller to provide
the firmware to update.
3. After updating, if the problem still remains, please contact your installer.
72The output current of
each inverter is
different.
1. Check if sharing cables are connected well and restart the inverter.
2. If the problem remains, please contact your installer.
80CAN data loss1. Check if communication cables are connected well and restart the
inverter.
2. If the problem remains, please contact your installer.
81Host data loss
82Synchronization data
loss
83The battery voltage of
each inverter is not the
same.
1. Make sure all inverters share same groups of batteries together.
2. Remove all loads and disconnect AC input and PV input. Then, check
battery voltage of all inverters. If the values from all inverters are close,
please check if all battery cables are the same length and same
material type. Otherwise, please contact your installer to provide SOP
to calibrate battery voltage of each inverter.
3. If the problem still remains, please contact your installer
84AC input voltage and
frequency are detected
different.
1. Check the utility wiring conncetion and restart the inverter.
2. Make sure utility starts up at same time. If there are breakers installed
between utility and inverters, please be sure all breakers can be turned
on AC input at same time.
3. If the problem remains, please contact your installer
85AC output current
unbalance
1. Restart the inverter.
2. Remove some excessive loads and re-check load information from LCD
of inverters. If the values are different, please check if AC input and
output cables are in the same length and material type.
3. If the problem remains, please contact your installer.
86AC output mode
setting is different
1. Restart the inverter.
2. Remove some excessive loads and re-check load information from LCD
of inverters. If the values are different, please check if AC input and
output cables are in the same length and material type.
3. If the problem remains, please contact your installer.


To check solar inverter installation guide.

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