SMA SUNNY CENTRAL 900CP XT - Page 39

5 Troubleshooting
SMA Solar Technology AG
Maintenance Manual 39SCCPXT-E7-WA-en-37
Error no. Explanation Inverter behavior Corrective measures
S1 S2 R
6605 The fast stop was tripped due
overtemperature in the switch cabi-
net.
30s 1 min ‒ • Contact the SMAServiceLine.
7001 Cable break or short circuit at in-
verter temperature sensor
W W ‒ • Check the wiring of the temperature
sensor.
• Contact the SMAServiceLine.
7002 W W ‒
7004 W W ‒
7006 W W ‒
7501 Interior fan is defective. W W ‒ • Check function of the fans.
• Clean the fans.
• Clean clogged fan inlets and ventilation
plates.
7502 W W ‒
7503 Inverter bridge fan is defective. W W ‒
7507 Motor-protective circuit breaker of
fan has tripped.
W W ‒
7510 Interior fan is defective. W W ‒
7600 Communication between touch dis-
play and communication unit is in-
terrupted. The error number ap-
pears on the display only.
W W ‒ • Check cabling between touch display
and communication unit.
• Contact the SMAServiceLine.
7601 Internal inverter error 30s 1 min x • Contact the SMAServiceLine.
7602 Internal communication error has
occurred or communication is inter-
rupted.
30s 1 min x • Contact the SMAServiceLine.
7605 30s 1 min x • Contact the SMAServiceLine.
7704 Faulty switching status of the DC
switchgear
30s Q ‒ • When disconnecting the inverter, check
that all motor-driven circuit breaker
switches are set to the OFF position. If
not, set all switches to OFF.
• Contact the SMAServiceLine.
7706 The AC disconnection unit is open
or was tripped.
30s Q ‒ • Contact the SMAServiceLine.
7707 Faulty switching status of the AC
disconnection unit
30s Q ‒ • Contact the SMAServiceLine.
7708 Faulty switching status of Re-
moteGFDI
W W ‒ • Contact the SMAServiceLine.
7709 90% of switch cycles of the DC
switchgear reached.
10s 10s ‒ • Contact the SMAServiceLine.
7710 100% of switch cycles of the DC
switchgear reached.
30s 30s ‒ • Contact the SMAServiceLine.