8. Fault diagnosis and solutions
Types
Codes
Solutions
Soft Time 0ut
F00
(1) Restart the inverter and wait until it functions
normally;
(2) Contact customer service if error warning
continues.
INV Volt Short
F01
(1) Cut off all the power and shut down all the
machines; disconnect the load and plug in to restart
machines, then check whether the load is short
circuited if the fault has been eliminated;
(2) Contact customer service if fault remains
unremoved.
GFCI Sensor Fault
F02
(1) Cut off all the power, Restart the inverter and
wait until it functions normally.
(2) Contact customer service if error warning
continues.
Bus Volt Low
F04
F05
(1) Check the input mode setting is correct.
(2) Restart the inverter and wait until it functions
normally.
(3) Contact customer service if error warning
continues.
Types
Codes
Solutions
Bus Volt Short
F06
(1) Restart the inverter and wait until it functions
normally.
(2) Contact customer service if error warning
continues.
PV ISO Under Fault
F07
(1) Check for good ground connection.;
(2) Check if the earth resistance of PV+ and PV- is
greater than 2M
Ω
; (3) If it is smaller than 2M
Ω
,
check PV string for ground fault or poor ground
insulation; if it is greater than 2M
Ω
, please contact
the local inverter customer service once fault is not
removed.
PV Input Short
Circuit
F08
(1) Check the input mode setting is correct.
(2) Disconnect the PV input, restart the inverter and
wait until it functions normally.
(3) Contact customer service if error warning
continues.
Relay Fault
F09
F14
F19
(1) Disconnect the PV input, restart the inverter and
wait until it functions normally.
(2) Contact customer service if error warning
continues.
INV Current Over
F10
(1) Wait five minutes for the inverter to automatically
restart;
F13
Sink Over Temp
F14
Grid Relay Fault
F15
DisChg Curr Over
F16
Chg Curr Over
F17
Current Sensor Fault
F18
INV Abnormal
F19
EPS Relay Fault
F20
Alway Over Load
F32
SCI Fault
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