SMA SUNNY CENTRAL - Manual (Page 55)

SMA Solar Technology AG Failures and Warnings
User Manual SC-BEN092751 55
400 Error text:
internal failure of inverter bridge
Error type
2/3
Cause:
Internal inverter bridge failure (e.g. symmetry fault, board voltage, undertemperature,
sensor breakage).
Corrective measures:
If this error occurs frequently, contact the Sunny Central Serviceline.
402 Error text:
ser. com. with inverter bridge disturbed Error type 2
Cause:
• The RS485 communication between the inverter bridge and the Sunny Central Control
is interrupted.
• The inverter bridge or the Sunny Central Control may be faulty.
Corrective measures:
• Check the RS485 wiring.
• If this error is always present, contact the Sunny Central Serviceline.
408 Error text:
PV Overvoltage
Error type 3
Cause:
DC voltage is too high on the generator side (software).
Corrective measures:
• Immediately disconnect the solar generator from the Sunny Central! Risk of
damage to the Sunny Central!
• Check DC voltage.
• Check module wiring and system design.
No. Description