Troubleshooting And Maintenance; Troubleshooting - LIVOLTEK Hyper-2000 User Manual

9.

Troubleshooting and Maintenance

Before maintaining and commissioning inverter and its peripheral distribution unit switch off
all the charged terminals of the inverter, and wait at least 10 minutes after the inverter is
powered off.

9.1 Troubleshooting

When the inverter has an exception, its basic common warning and exception handling methods
are shown in the table below.
Alarm Name
PV1 Over Volt
PV2 Over Volt
PV1 Over
Current
PV2 Over
Current
PV1 Strings
Reverse
PV2 Strings
Reverse
PV Energy
Weak
Leakage Over
Current
Earth Fault
AC Volt Fault
Possible causes
PV input voltage is not
within permissible
range.
PV input current is not
within permissible
range.
The cables of PV strings
are connected reversely.
Insufficient power
supply from PV strings.
The leakage current
exceeds the permissible
range.
The earth fault occurs
AC voltage is not within
permissible range.
WARNING
Suggestion
Check the voltage and number of PV
modules and adjust it if need. Wait for
recovery or restart the system.
Check the
configuration. Wait for recovery or
restart the system.
Disconnected the DC Switch. Check the
cables of PV strings and reconnect the
cables if need.
When sunlight intensity weakens, no
action is needed. Otherwise, check if
there is shielded, or short circuit, open
circuit etc. in the PV strings.
Check PV cable ground connection and
adjust it if need.
Contact
support if the error happens again.
Check the connection of grounding and
the L-line & N-line and adjust it if need.
Contact
support if the error happens again.
Check the setting of the safety country
and AC voltage (L & N).
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PV input power
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