© 2022 Hoymiles Power Electronics Inc. All rights reserved.
19
Single-phase Microinverter HMS-1600C/1800C/2000C-4T
Troubleshooting
208
MPPT-B
Input undervoltage
1. Please make sure that the PV module open-circuit voltage is
not lower than the minimum input voltage.
2. If the PV module open-circuit voltage is within the normal
range, contact your dealer or Hoymiles technical support team.
209
PV-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
PV-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
PV-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
PV-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
MPPT-A
PV-1 & PV-2 abnormal wiring
1.Please check whether the DC connections on port 1 and 2 are
correct.
2.Check if the DC extension cable is made correctly.
214
MPPT-B
PV-3 & PV-4 abnormal wiring
1.Please check whether the DC connections on port 3 and 4 are
correct.
2.Check if the DC extension cable is made correctly.
215
PV-1
Input overvoltage
Check the input voltage of PV-1 port.
216
PV-1
Input undervoltage
Check the input voltage of PV-1 port.
217
PV-2
Input overvoltage
Check the input voltage of PV-2 port.
218
PV-2
Input undervoltage
Check the input voltage of PV-2 port.
219
PV-3
Input overvoltage
Check the input voltage of PV-3 port.
220
PV-3
Input undervoltage
Check the input voltage of PV-3 port.
221
PV-4
Input overvoltage
Check the input voltage of PV-4 port.
222
PV-4
Input undervoltage
Check the input voltage of PV-4 port.
301
-
314
Device failure
1. If the alarm occurs occasionally 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 team.
