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Error Message
Description
Solution
Inverter OF
Backup output over frequency.
① Restart the inverter.
② Seek for help from the installer or manufacture.
Inverter OC
Backup output overcurrent.
① Restart the inverter.
② Seek for help from the installer or manufacture.
Phase Order Err
phase sequence error.
① Restart the inverter.
② Seek for help from the installer or manufacture.
SCI Fault
Internal communication fails.
Caused by a strong external
magnetic field etc.
① Restart the inverter.
② Seek for help from the installer or manufacture.
FLASH Fault
Internal storage anomaly.
Caused by a strong external
magnetic field etc.
① Restart the inverter.
② Seek for help from the installer or manufacture.
Meter Comm Fault
Inverter and meter communica-
tion abnormal.
① Check the Meter wiring.
② Check whether the Meter is normal.
Battery Fault
Battery fault.
① Restart the inverter.
② Seek for help from the installer or manufacture.
7 Troubleshooting
Items
Methods
Period
System clean
Check the temperature and dust of the inverter.
Clean the inverter enclosure if necessary.
Check if the air inlet and outlet are normal.
Clean the air inlet and outlet if necessary.
Six months to a year (it depends on
the dust contents in air.)
※ 7.2 Maintenance
Danger
Risk of inverter damage or personal injury due to incorrect service!
Always keep in mind that the inverter is powered by dual sources: PV strings and utility grid.
Before any service work, observe the following procedure.
① Disconnect the AC circuit breaker and then set the DC load-break switch of the inverter to OFF;
② Wait at least 5 minutes for inner capacitors to discharge completely;
③ Verify that there is no voltage or current before pulling any connector.
Caution
Keep non-related persons away!
A temporary warning sign or barrier must be posted to keep non-related persons away
while performing electrical connection and service work.
Attention
Restart the inverter only after removing the fault that impairs safety performance.
As the inverter contains no component parts that can be maintained, never arbitrarily
replace any internal components.
For any maintenance need, please contact Sunways. Otherwise, Sunways shall not be
held liable for any damage caused.
Note
Servicing of the device in accordance with the manual should never be undertaken in
the absence of proper tools, test equipment or the latest revision of the manual which
has been clearly and thoroughly understood.
7 Troubleshooting