
© 2022 Hoymiles Power Electronics Inc. All rights reserved.
15
Single-phase Microinverter User Manual
205
Input port 1 & 2
overvoltage
1. Please make sure that the PV module open-circuit voltage is less than
or equal to the maximum input voltage.
2. If the PV module open-circuit voltage is not within the normal range,
contact your dealer or Hoymiles Technical Service Center.
206
Input port 3 & 4
overvoltage
1. Please make sure that the PV module open-circuit voltage is less than
or equal to the maximum input voltage.
2. If the PV module open-circuit voltage is not within the normal range,
contact your dealer or Hoymiles Technical Service Center.
207
Input port 1 & 2
undervoltage
1. Please make sure that the PV module open-circuit voltage is less than
or equal to the maximum input voltage.
2. If the PV module open-circuit voltage is not within the normal range,
contact your dealer or Hoymiles Technical Service Center.
208
Input port 3 & 4
undervoltage
1. Please make sure that the PV module open-circuit voltage is less than
or equal to the maximum input voltage.
2. If the PV module open-circuit voltage is not within the normal range,
contact your dealer or Hoymiles Technical Service Center.
209
Port 1 no input
1. Please confirm whether this port is connected to the PV module.
2. If the PV module is connected, please check the DC cable connection
between this port and the PV module.
210
Port 2 no input
1. Please confirm whether this port is connected to the PV module.
2. If the PV module is connected, please check the DC cable connection
between this port and the PV module.
211
Port 3 no input
1. Please confirm whether this port is connected to the PV module.
2. If the PV module is connected, please check the DC cable connection
between this port and the PV module.
212
Port 4 no input
1. Please confirm whether this port is connected to the PV module.
2. If the PV module is connected, please check the DC cable connection
between this port and the PV module.
213
PV-1 & PV-2 abnormal
wiring
Please check whether the DC connections on Port 1 and 2 are correct.
214
PV-3 & PV-4 abnormal
wiring
Please check whether the DC connections on Port 3 and 4 are correct.
301
Hardware error code 301
1. If the alarm occurs accidentally and the microinverter can still
function normally, no special treatment is required.
2. If the alarm occurs frequently and cannot be restored, contact your
dealer or Hoymiles Technical Service Center.
302
Hardware error code 302
1. If the alarm occurs accidentally and the microinverter can still
function normally, no special treatment is required.
2. If the alarm occurs frequently and cannot be restored, contact your
dealer or Hoymiles Technical Service Center.
303
Hardware error code 303
1. If the alarm occurs accidentally and the microinverter can still
function normally, no special treatment is required.
2. If the alarm occurs frequently and cannot be restored, contact your
dealer or Hoymiles Technical Service Center.
304
Hardware error code 304
1. If the alarm occurs accidentally and the microinverter can still
function normally, no special treatment is required.
2. If the alarm occurs frequently and cannot be restored, contact your
dealer or Hoymiles Technical Service Center.
305
Hardware error code 305
1. If the alarm occurs accidentally and the microinverter can still
function normally, no special treatment is required.
2. If the alarm occurs frequently and cannot be restored, contact your
dealer or Hoymiles Technical Service Center.