Maintenance - SMA MLX Serie Guia De Instalacion

Service
ID Status
message
323
Table 4.3 Internal Events
Events Caused by the Self-test
ID Description
100 PV input current is negative.
Sensor error.
264, 266 Measurement circuit test failed.
4 4
272 PV surge protection device error. Inverter will continue
operation without surge protection.
273 Grid surge protection device error. Inverter will continue
operation without surge protection.
274 Surge protection device status unknown.
350–352 RCMU self-test failed.
353 Current sensor test failed.
356–361 Transistor and relay test failed or inverter relay has failed
(contact assumed welded).
366 RCMU self-test failed.
Table 4.4 Events Caused by the Self-test

4.2 Maintenance

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.
30
Description
Internal fan error. Maximum output power
has been reduced.
L00410644-01_2q / Rev. date: 2014-06-02
Action
If the event is repeated, call service.
Action
Check polarity of PV installation, if correct,
call service.
Restart the inverter. If event persists, call
service.
Service: Replace PV surge protection device. -
Service: Replace grid surge protection
device.
Restart the inverter. If event persists, call
service.
Call service.
Call service.
Call service.
Call service.
DNO Hotline PV
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DNO Hotline PV
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x -
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