SMA SUNNY CENTRAL CP XT Series - Page 71

7 Troubleshooting
SMA Solar Technology AG
User Manual 71SCCPXT-E7-BA-en-58
Error no. Explanation Inverter behavior Corrective measures
S1 S2 R
6441 Sensor error during measurement
of DC voltage
30s 30s ‒ • Contact the SMAServiceLine.
6443 Unspecified error in digital signal
processor
30s ‒ x • Contact the SMAServiceLine.
6447 Self-test of inverter bridge failed Q Q ‒ • Contact the SMAServiceLine.
6448 Insulation monitoring provides non-
permitted values
W W ‒ • Check insulation monitoring.
6451 Measured AC voltage of the in-
verter is less than utility grid volt-
age.
W W ‒ • Contact the SMAServiceLine.
6452 Measured AC voltage of the utility
grid is less than inverter voltage.
W W ‒ • Contact the SMAServiceLine.
6453 AC voltage of grid limit monitoring
is faulty.
W W ‒ • Contact the SMAServiceLine.
6454 AC current is faulty. W W ‒ • Contact the SMAServiceLine.
6455 AC voltage is faulty. W W ‒ • Contact the SMAServiceLine.
6456 Pre-charging circuit of DC link is
defective.
W W ‒ • Contact the SMAServiceLine.
6457 Capacitor self-test has failed. Q Q ‒ • Contact the SMAServiceLine.
6461 Insulation monitoring device has
not adopted threshold.
15
min
15
min
x • Check the insulation monitoring device
and cabling.
6471 Online capacitor self-test has
failed.
Q Q ‒ • Contact the SMAServiceLine.
6472 Endless loop between online and
offline capacitor test
Q Q ‒ • Contact the SMAServiceLine.
6486 Inadmissible deviations between
AC power and DC power has
been detected.
W W ‒ ‒
6487 AC ground fault has been de-
tected.
Q Q ‒ • Check the overvoltage protection.
• Contact the SMAServiceLine.
6501 Interior temperature of inverter is
too high.
30s 1 min ‒ • Check function of the fans.
• Clean the fans.
• Clean clogged fan inlets and ventilation
plates.
6502 Temperature of inverter bridge is
too high.
30s 1 min ‒
6508 Outside temperature is too high. 30s 1 min ‒
6512 Minimum operating temperature
not reached
W W ‒ ‒