Troubleshooting; Troubleshooting List - Hoymiles HMT-1800 Series User Manual

Three-phase Microinverter HMT-1800/2250

6. Troubleshooting

6.1 Troubleshooting List

Alarm Code
121
125
126 Software error code 126
127
128 Software error code 128
129 Software error code 129
130
141
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Alarm Name
1. Check the ventilation and ambient temperature at the
microinverter installation position.
Over temperature 2. If the ventilation is poor or the ambient temperature exceeds the
protection limit, improve the ventilation and heat dissipation.
3. If both the ventilation and ambient temperature meet the
requirements, contact your dealer or Hoymiles technical support.
1.Check if the grid configuration parameter is correct and upgrade
again.
Grid configuration
parameter error
2. If the fault still exists, contact your dealer or Hoymiles technical
support.
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 Hoymiles technical support.
1.Check if the firmware is correct and upgrade again.
2.Check the communication between DTU and Hoymiles monitoring
system, the communication between DTU and microinverter. Then try
Firmware error
again.
3. If the fault still exists, contact your dealer or Hoymiles technical
support.
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 Hoymiles technical support.
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 Hoymiles technical support.
1.Please make sure that the microinverter works normally.
2.Check the communication status between the DTU and hoymiles
monitoring system or between the DTU and the microinverter.If the
Offline
communication is poor, try to make some improvements.
3. If the alarm occurs frequently and cannot be recovered, contact
your dealer or Hoymiles technical support.
1. If the alarm occurs accidentally, the grid voltage may be abnormal
temporarily. The microinverter can recover automatically after grid
voltage becomes normal.
Grid overvoltage
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 Hoymiles monitoring
system with the consent of the local power operator.
Suggestion
Troubleshooting
12