SOLINTEG MHT-10K-25, Руководство пользователя

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User Manual
MHT-4~20K series
Troubleshooting 9
※ 9.1 Error Message
Solinteg MHT-4~20K series hybrid inverter is designed in accordance with grid operation
standards, and conform to the requirements of safety and EMC. The inverter had passed a
series of rigorous tests to ensure it runs sustainably and reliably before shipment.
When a fault occurs, the corresponding error message will be shown on the OLED display,
and in this case, the inverter might stop feeding into grid. The fault messages and their
corresponding troubleshooting methods are listed below:
Error Message Description Solution
Mains Lost
Grid power outage, AC switch or cir-
cuit is disconnected.
1. Check whether the mains supply is lost.
2. Check whether the AC breaker and termi-
nal are well connected.
Grid Voltage Fault
Grid overvoltage or undervoltage, the
grid voltage is higher or lower than
the set protection value.
1. Check whether the impendence of the
AC cable is too high to lead the grid voltage
increased. Change a thicker AC cable if it is.
2. Extend the voltage protection range if it
is allowed by the electricity company.
Grid Frequency Fault
Grid over frequency or underfrequen-
cy, the grid frequency is higher or
lower than the set protection value.
1. Check whether the AC cable is correct
and well connected.
2. Change to another country with wider
protection range if it's allowed by the local
electricity company.
GFCI Fault
DC injection High. Inverter detects a
higher DC component in AC output.
1. Restart the inverter.
2. Seek for help from the installer or manu-
facture.
ISO Over Limitation
Low system insulation resistance,
which is generally caused by poor
insulation to ground of the module/
cable or by rainy and damp environ-
ment.
1. Restart the inverter.
2. Check if the insulation of the wires in PV,
battery, and AC is damaged.
Seek for help from the installer or manufac-
ture.