SMA SUNNY MINI CENTRAL 4600A Installation Manual page 69

SMA Solar Technology AG
Message
Trafo‑Temp‑W
Shutdown
Vac‑Bfr
Vac‑Srr
Installation Manual
Description and corrective measure
If the transformer reaches an inadmissibly high temperature, the inverter
stops feeding the grid until the transformer has reached an admissible
temperature and the plant can begin feeding the grid again.
The "Trafo‑Temp‑W" warning is displayed until the device is completely
disconnected.
Corrective measures
• Check the heat dissipation of the inverter.
Temporary inverter fault.
Corrective measures
• Contact the SMA Service Line.
The line voltage is no longer within the permissible range ("Bfr" or "Srr" is
an internal message of no relevance for the user). This fault can be
caused by any of the following conditions:
• Power distribution grid disconnected
(miniature circuit‑breaker, fuse)
• AC cable is broken
• AC cable is highly resistive
The inverter disconnects itself from the power distribution grid for safety
reasons.
Corrective measures
• Check the line voltage and connection on the inverter.
• If the line voltage lies outside the acceptable range because of
local grid conditions, ask the grid operator if the voltages can be
adjusted at the feed‑in point or if they agree to changes in the
values of the monitored operating limits
(operating parameters: Vac‑Min and Vac‑Max).
• If the line voltage lies within the tolerance range, yet "Vac‑Bfr" or
"Vac‑Srr" faults are still displayed, contact the SMA Service Line.
SMC46-60A-IA-IEN120471
Troubleshooting
69