10 Troubleshooting
SMA Solar Technology AG
82
SCCP-JP-BA-A4-en-12
User Manual
6441
Sensor error occurred during
measurement of the DC voltage.
30 s
30 s
‒
• Contact the SMA Service Line.
6443
Unspecified error occurred in digital
signal processor.
30 s
30 s
x
6447
Self-test in inverter bridge failed
Q
Q
‒
6448
Insulation monitoring yields
non-permitted values.
W
W
‒
• Check insulation monitoring.
6451
Measured AC voltage from
Sunny Central is less than voltage
from utility grid.
W
W
‒
• Contact the SMA Service Line.
6452
Measured AC voltage from
utility grid is less than voltage from
Sunny Central.
W
W
‒
6453
AC voltage of grid limits monitoring
mismatched
W
W
‒
6454
AC current mismatched
W
W
‒
6455
AC voltage mismatched
W
W
‒
6456
Pre-charging circuit of DC link
defective
W
W
‒
6457
Capacitor self-test failed
Q
Q
‒
6461
Insulation monitoring device has not
adopted threshold.
15 min 15 min
x
• Ensure that insulation
monitoring device and wiring
OK.
6501
Internal temperature in
Sunny Central too high
30 s
1 min
‒
• Check function of fans.
• Clean fans.
• Clean clogged fan inlets and
ventilation plates.
6502
Temperature at inverter bridge too
high
30 s
1 min
‒
6508
Outside temperature too high
30 s
1 min
‒
6605
Fast stop tripped due to
overtemperature
30 s
1 min
‒
• Contact the SMA Service Line.
7001
Cable break or short circuit at
Sunny Central temperature sensor
W
W
‒
• Check wiring of temperature
sensor.
• Contact the SMA Service Line.
7002
W
W
‒
7004
W
W
‒
7006
W
W
‒
7501
Interior fan defective
W
W
‒
• Check function of fans.
• Clean fans.
• Clean clogged fan inlets and
ventilation plates.
7502
W
W
‒
7503
Inverter bridge defective
W
W
‒
7507
Motor-protective circuit-breaker of
fan has tripped.
W
W
‒
Error no.
Explanation
Behavior of the
Sunny Central
Corrective measures
S 1
S 2
R