Troubleshooting
SMA Solar Technology AG
56
WB33-38-IA-IEN120940
Installation Manual
9 Troubleshooting
If the inverter displays blink codes which differ from those described below, contact the
SMA Service Line.
You will find a description of display messages during operation, status messages and measurement
channels in the user manual provided.
Do not try to carry out any repairs other than those described here. Instead, use
SMA Solar Technology AG's 24-hour replacement service (the inverter will be ready for dispatch at
the freight forwarder within 24 hours) and repair service.
9.1 Blink Codes
Green
Red
Yellow
Status
flashing
flashing
flashing
OK (start-up phase)
permanently on
off
off
OK (feed-in operation)
permanently on
off
Earth fault or varistor
defective
permanently on
OK (initialisation)
flashing rapidly
(3 x per second)
off
off
OK (stop)
permanently on
off
Earth fault or varistor
defective
flashing slowly
(1 x per second)
off
off
OK (waiting, grid
monitoring)
goes off briefly
(approx. 1 x per second)
off
off
OK (derating)
permanently on
off
Earth fault or varistor
defective
off
off
off
OK
on / flashing
Disturbance
permanently on
off
Earth fault or varistor
defective
on / flashing
Earth fault or varistor
defective and
disturbance