SMA SUNNY CENTRAL 900CP XT - Error Numbers 34 Xx to 40 Xx - Disturbance on the PV Array

5 Troubleshooting
SMA Solar Technology AG
Maintenance Manual 35SCCPXT-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
‒