46
45
CT line reversed or
Ground fail
1.Check the L line and N line of SP-CT is reversed
or not.
2 . I f e r r o r m e s s a g e s t i l l e x i s t s , c o n t a c t
manufacturer.
Communication
fault,M3 didn't
receive SP-CT data
1.Check communication wire
2 . I f e r r o r m e s s a g e s t i l l e x i s t s , c o n t a c t
manufacturer.
1.Check communication wire.
2 . I f e r r o r m e s s a g e s t i l l e x i s t s , c o n t a c t
manufacturer.
1.After shutdown,Check the fan connection.
2. replace the fan.
3.If the error message still exists, contact
manufacturer.
1.After shutdown,Check the DC SPD.
2.If error message still exists,contact manufacturer.
1.Check the PV1 or PV2 wiring is short-circuited
2.If error message still exists,contact manufacturer.
Dry contact function
abnormal
1.After shutdown,Check the dry Dry contact wiring.
2 . I f t h e e r r o r m e s s a g e s t i l l e x i s t s , c o n t a c t
manufacturer.
1.Restart inverter.
2.If error message still exists,contact manufacturer.
1.After shutdown,Check the AC SPD.
2.If error message still exists,contact manufacturer.
U d i sk o ver- c u rrent
protection
1.Unplug the U disk
2.Re-access U disk after shutdown
3.If the error message still exists, contact
manufacturer.
1.After shutdown,Check fuse.
2 . I f e r r o r m e s s a g e s t i l l e x i s t s , c o n t a c t
manufacturer.
The DC input voltage is
exceeding the
maximum tolerable
value.
1.Immediately disconnect the DC switch and
check the voltage
2.If the fault code still exists after the normal
voltage is restored, contact manufacturer.
1.Check PV input terminals
2 . I f e r r o r m e s s a g e s t i l l e x i s t s , c o n t a c t
manufacturer.
1.Please confirm grid is lost or not.
2 . I f e r r o r m e s s a g e s t i l l e x i s t s , c o n t a c t
manufacturer.
1.Check the AC voltage is in the range
of standard voltage in specification.
2 . I f e r r o r m e s s a g e s t i l l e x i s t s , c o n t a c t
manufacturer.
1.Check the frequency is in the range
of specification or not.
2 . I f e r r o r m e s s a g e s t i l l e x i s t s , c o n t a c t
manufacturer.
1.Please reduce the load of EPS output.
2 . I f e r r o r m e s s a g e s t i l l e x i s t s , c o n t a c t
manufacturer.
1.Check if AC current sensor is connected well
2 . I f e r r o r m e s s a g e s t i l l e x i s t s , c o n t a c t
manufacturer.
1.Check if the meter is on
2.Check the machine and the meter connection is
normal.
Optimizer and inverter
c o m m u n i c a t i o n i s
abnormal
1.Check if the optimizer is on.
2.Check whether the connection between the
optimizer and the inverter is normal.
String communication
abnormal
1.After shutdown,Check the string panel wiring.
2.If the error message still exists, contact
manufacturer .
1.Restart inverter.
2 . I f e r r o r m e s s a g e s t i l l e x i s t s , c o n t a c t
manufacturer.
DSP and COM
f i r m w a r e v e r s i o n
unmatch
1.Check the firmware version.
2 . I f e r r o r m e s s a g e s t i l l e x i s t s , c o n t a c t
manufacturer.
1.Restart inverter
2 . I f e r r o r m e s s a g e s t i l l e x i s t s , c o n t a c t
manufacturer.
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