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Troubleshooting
4–6 152607
0017 Phase Error S This fault indicates that the PV225S
has detected an incorrect phase
rotation of the incoming AC grid
voltage. This condition is indicative
of a power conductor termination
error, resulting in improper phasing
sequence.
• AC power conductors
terminated at S1-2T1,
S1-4T2, and S1-6T3 are
improperly phased.
0020 PV Over-Current S This fault indicates that the PV225S
has detected a DC current greater
than the maximum allowed value of
900 A DC.
• CT7 is inoperable
• CCU2 ±15 Vdc Power
Supply is defective
• P3 on CCU2 is loose or
disconnected
• PV system wiring short
0021 PV Over-Voltage S This fault indicates that the PV225S
has detected a DC input voltage of
greater than the maximum allowed
value of 600 Vdc.
• PV system wiring short
• Lightning strike on PV
system wiring
0023 Bus Voltage High H This fault indicates that the PV225S
has detected that the DC bus voltage
has exceeded the maximum allowed
value of 925 Vdc.
• PV system wiring short
• Lightning strike on PV
system wiring
XX31 Left Matrix Over
Current
S This fault indicates that the PV225S
has detected that the AC current on
one or more phases of the inverter
output has exceeded the maximum
allowed value of 712 A
rms
.
The first two digits of the fault code
indicate the particular phase where
the over current occurred as follow:
• 0131 - Matrix over current in
phase A
• 0231 - Matrix over current in
phase B
• 0431 - Matrix over current in
phase C
If more than one phase faults
simultaneously, the two first digits
are added in hexadecimal form to
indicate an over current condition in
more than one phase, thus the error
code will contain the summation of
the faulted phases.
• CT1, CT2, or CT3 are
inoperable
• CCU2 ±15 Vdc Power
Supply is defective
• P3 on CCU2 is loose or
disconnected
• AC system wiring short
Table 4-1
Fault Codes
Error
Code Fault Source(s)
Fault Type
H=Hardware
S=Software
Fault Description Possible Causes