aptos MAC 800R - Page 16

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2.Check the communication between DTU and Aptos monitoring
system, the communication between DTU and microinverter. Then try
again.
3.If the fault still exists, contact your dealer or Aptos technical
support.
128
Software error code
128
1. If the alarm occurs accidentally and the microinverter can still work
normally, no special treatment is required.
2. If the alarm occurs frequently and cannot be recovered, contact your
dealer or Aptos technical support.
129
Software error code
129
1. If the alarm occurs accidentally and the microinverter can still work
normally, no special treatment is required.
2. If the alarm occurs frequently and cannot be recovered, contact your
dealer or Aptos technical support.
130
Offline
1.Please make sure that the microinverter works normally.
2.Check the communication status between the DTU and Aptos
monitoring system or between the DTU and the microinverter. If
the communication is poor, try to make some improvements.
3.If the alarm occurs frequently and cannot be recovered, contact your
dealer or Aptos technical support.
141
Grid overvoltage
1. If the alarm occurs accidentally, the grid voltage may be abnormal
temporarily. The microinverter can recover automatically after grid
voltage becomes normal.
2. If the alarm occurs frequently, check whether the grid voltage is within
the acceptable range. If no, contact the local power operator or change
the grid overvoltage protection limit via Aptos monitoring system with the
consent of the local power operator.
142
10-min value grid
overvoltage
1. If the alarm occurs accidentally, the grid voltage may be abnormal
temporarily. The microinverter can recover automatically after grid
voltage becomes normal.
2. If the alarm occurs frequently, check whether the grid voltage is within
the acceptable range. If no, contact the local power operator or change
the grid overvoltage protection limit via Aptos monitoring system with the
consent of the local power operator.
143
Grid undervoltage
1. If the alarm occurs accidentally, the grid voltage may be abnormal
temporarily. The microinverter can recover automatically after grid
voltage becomes normal.
2. If the alarm occurs frequently, check whether the grid voltage is within
the acceptable range. If no, contact the local power operator or change
the grid undervoltage protection limit via Aptos monitoring system
with consent from the local power operator.
3. If the fault still exists, check the AC switch or AC wiring.
144
Grid overfrequency
1. If the alarm occurs accidentally, the grid frequency may be abnormal
temporarily. The microinverter can recover automatically after grid
frequency becomes normal.
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