157
000761AG-F
8 - Maintenance
- Message on di-
splay
- Signal
Name of Derating and Cause Solution
- LIMxxx% CODE:05
Power limitation due to excess temperature:
The message indicates that a power limitation is active since an
excess temperature condition has been recorded inside the inver
-
ter (This parameter depends also on the power which the inverter
must provide since the measurement of temperatures is taken
internally and is inuenced by the heat dissipated by the compo
-
nents of the inverter itself).
LIM xxx% = Power reduction percentage
Examples:
LIM 100% = no power limitation
LIM 50% = limitation to 50% of the output nominal power
• Check that the inverter is not exposed to direct
sunlight. Wait for the temperatures to which the in
-
verter is exposed to return to the operating range
and for the inverter to cool down.
- If the problem (once the ambient temperature has
returned within the range) persists, contact custo
-
mer assistance.
- LIMxxx% CODE:06
Power limitation for input over-voltage:
The message indicates that a power limitation is active since an
input overvoltage (AC) has been recorded.
LIM xxx% = Power reduction percentage
Examples:
LIM 100% = no power limitation
LIM 50% = limitation to 50% of the output nominal power
• It is necessary to measure the input voltage inside
the inverter with a voltmeter.
- If it is higher than the maximum voltage of the ope
-
rating range, the alarm is genuine and it is necessa-
ry to check the conguration of the PV generator. If
the voltage has also exceeded the maximum input
threshold the inverter could be damaged.
- If it is lower than the maximum voltage of the ope
-
rating range, the alarm is caused by an internal
malfunction and it is necessary to contact customer
assistance.
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