5 Troubleshooting
SMA Solar Technology AG
Maintenance Manual
35
SCCPXT-E7-WA-en-37
Error no. Explanation
Inverter behavior
Corrective measures
S1
S2
R
0404*
Frequency change per second too
high for grid operation
30 s
30 s
‒
‒
0502*
Power frequency is too low. Power
frequency disturbance detected by
standard monitoring.
30 s
30 s
‒
• Check power frequency.
• Check the display of the grid monitoring
relay.
• Make sure the fuses in the load circuit
function properly.
0503*
Power frequency is too high.
Power frequency disturbance de-
tected by standard monitoring.
30 s
30 s
‒
0504*
Power frequency is too low. Power
frequency disturbance detected by
redundant monitoring.
30 s
30 s
‒
0505*
Power frequency is too high.
Power frequency disturbance de-
tected by redundant monitoring.
30 s
30 s
‒
0506*
The inverter has detected a stand-
alone grid and has disconnected
from the utility grid.
W
W
‒
• Check power frequency.
0801*
One line conductor of the utility
grid has failed.
30 s
30 s
‒
• Check the grid voltage.
• Make sure the external fuses work
properly.
• Make sure the AC cable connections
are tight.
0802*
1301
Left-hand rotating magnetic field is
connected.
30 s
Q
‒
• Check the phase position.
• Make sure all fuses are switched on.
1500
The conditions for grid reconnec-
tion have not yet been reached af-
ter a grid error.
W
W
‒
• Check the power frequency and grid
voltage.
* Depending on the parameterization, the disturbance message may have to be acknowledged manually.
5.4.4
Error Numbers 34xx to 40xx - Disturbance on the PV Array
Error no. Explanation
Inverter behavior
Corrective measures
S1
S2
R
3403
PV array voltage is too high.
15
min
30
min
‒
• Check the DC voltage.
• Check the module wiring and system
design.
3404
Open-circuit voltage is too high.
Disturbance detected by standard
monitoring.
15
min
30
min
‒
3406
The DC voltage is too high.
15
min
30
min
‒
Summary of Contents for SUNNY CENTRAL 1000CP XT
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