SMA Solar Technology AG
ID
Status
message
281
282
283
323
Table 4.4 Internal events
Events caused by the self-test
ID
Description
100
PV input current is negative. Sensor fault. Check the polarity of the PV system. If
264
Measurement circuit test failed.
266
Measurement circuit test failed.
272
PV overvoltage protection device error.
Inverter will continue operation without
overvoltage protection.
273
AC grid surge protection device error.
Inverter will continue operation without
surge protection device.
274
Overvoltage protection device status
unknown.
Installation Guide
Description
Too many RCMU events
during the past 24 hours. Only
four automatic reconnect
attempts after event 34 is
allowed during a 24-hour
period. The inverter will
automatically try to reconnect
after a certain period.
Grid code settings invalid.
Gatedrive error.
Internal fan error. Maximum
output power has been
reduced.
Measures
Wait up to 24 hours. If event 34
recurs, follow the action for event
34.
Restart the inverter. If the event
persists, ask Service to generate a
new grid code file or reselect a
standard grid code.
Restart the inverter. If the event
persists, contact Service.
If the event repeats, contact Service.
Measures
polarity is correct, contact Service.
If the event persists, contact Service.
Warning: Do not operate the DC
load-break switch of the inverter.
Switching off the DC voltage using a
suitable DC load-break switch in the
Combiner Box is still possible. Do not
perform any further actions or switching
operations on the inverter. Contact
Service immediately.
Replace PV overvoltage protection
device. See SPD replacement
instructions for details.
Replace AC grid surge protection
device. See SPD replacement
instructions for details.
Restart the inverter. If the event persists,
contact Service.
DNO SMA
Service
Line
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DNO SMA
Service
Line
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SHP75-10-STP60-10-IA-xx-18
4 Service
PV
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PV
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39