Photovoltaic Solar Inverter Series ES
Status Diagnosis and Troubleshooting
9.2 Mains error alarm codes and explanations
Utility Voltage
Over-Voltage
The mains voltage is
higher or lower
than the authorised
amount.
16. Wait 5 minutes. When the
mains supply returns to
normal, the photovoltaic
solar inverter starts up
automatically.
17. Check the mains
connection (cable and
terminals).
18. Make sure the mains
voltage and frequency
meet the requirements.
19. If the error occurs again,
please contact your dealer.
Utility Voltage
Under-Voltage
Utility Voltage
Over Frequency
The mains frequency
is higher or lower than
the authorised
amount.
Utility Voltage
Under Frequency
BOOSTER_A
Input
Over-Voltage
Under or over-voltage
of the DC input.
20. Disconnect all PV (+)- or
PV (-) connections.
21. Check whether the PV
voltage is under 120 VDV
or above 500 VDC.
22. If the voltage is within this
range and the problem
continues, please contact
your dealer.
BOOSTER_A
Input
Under-Voltage
BOOSTER_B
Input
Over-Voltage
BOOSTER_B
Input
Under-Voltage
No mains supply or
mains outside the
tolerances.
23. Disconnect all PV (+)- or
PV (-) connections.
24. Check the mains
connection (cable and
terminals).
25. Check the phasing and the
waveform of the mains
supply.
26. If the supply is normal and
the problem persists,
please contact your dealer.