SMA SMC 9000TL Installation - Manual (Page 63)

Installation Manual SMC9-11TLRP-IA-en-51 63
SMA Solar Technology AG 10 Troubleshooting
NUW-dI
MSD-Fac
MSD-Vac
MSD-Timeout Internal measurement comparison fault or the hardware is defective.
Corrective measures:
• If this message is displayed frequently, contact the
SMA Service Line.
offset Fault in recording measured values
Corrective measures:
• If this message is displayed frequently, contact the
SMA Service Line.
PowerBalance Three inverters are connected to a three-phase feed-in unit to prevent
unbalanced loads.
The parameter „PowerBalancer“ is set to the operating modes
„PhaseGuard“ or „FaultGuard“ (description of the operating modes
of the SMA Power Balancer, see Section section 4.5).
REL_INV_CLOSE
REL_GRID_CLOSE One of the grid relays does not close. The inverter checks the relays
which connect the inverter to the electricity grid before the inverter
feeds in to the electricity grid.
If the grid relays do not function properly, the inverter will not connect
to the electricity grid.
Corrective measures:
• Contact the SMA Service Line.
REL_INV_OPEN
REL_GRID_OPEN One of the grid relays does not open. The inverter checks the relays
which connect the inverter to the electricity grid before the inverter
feeds in to the electricity grid.
If the grid relays do not function properly, the inverter will not connect
to the electricity grid.
If this message is displayed frequently, permanent shutdown will be
triggered.
Corrective measures:
• Rectify the fault using a communication product.
• If the fault cannot be rectified using a communication product,
contact the SMA Service Line.
Message Cause and corrective measures