SMA FLX Series - Manual (Page 37)

Events Caused by the Self-test
ID Description Action DNO Hotline PV
264-271 Measurement circuit test failed. Restart the inverter. If event persists, call the installer.
Installer: Call service.
- x -
352 RCMU self-test failed. Call the installer.
Installer: Call service.
- x -
353 Current sensor test failed. - x -
356-363 Transistor and relay test failed, or inverter
relay has failed (contact assumed welded).
- x -
364 Neutral connection is damaged or missing. Call the installer. Installer: Check AC installation for failures
on neutral connection. Call service.
- x -
365 Earth wire failed. Call the installer.
Installer: Call service.
- x -
Table 4.5 Events Caused by the Self-test
4.2 Maintenance
Normally, the inverter needs no maintenance or
calibration.
Ensure that the heat sink at the rear of the inverter is not
covered.
Clean the contacts of the PV load switch once per year.
Clean by cycling the switch to on and off positions 10
times. The PV load switch is located at the base of the
inverter.
For correct operation and long service life, ensure free air
circulation
- around the heat sink at the top and side of the
inverter where the air exhausts, and
- to the fan at the inverter base.
To clear obstructions, clean using pressurised air, a soft
cloth, or a brush.
WARNING
Temperature of the heat sink can exceed 70 °C.
Service
36 L00410568-03_2q / Rev. date: 2014-06-20
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