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6.3 Some fault troubleshooting
Fault
Solving Measures
No display on screen
Check whether the battery air switch or PV air switch is closed;
whether the switch is in "on" state; press any key on the screen to
exit from the screen sleep mode.
Charge battery overvoltage
protection
Measure whether the battery voltage exceeds 60V, and
disconnect the photovoltaic array air switch and the AC air switch.
Battery undervoltage
protection
After the battery charge restores to be above low-voltage
disconnection recovery voltage.
Fan fault
Check if the fan doesn't work or if it's blocked by something else.
Radiator overtemperature
protection
When the device cools below the overtemperature recovery
temperature, it shall restore to normal charge and discharge
control.
Bypass overload
protection, inverting
overload protection
①
Decrease consumer;
②
Restart solar charge inverter and the load output is restored.
Inverting short-circuit
protection
Carefully check load connection condition, clear short-
circuit fault point;
After power on again, the load output is restored.
PV overvoltage
Check whether PV input voltage exceeds maximum allowable
input voltage with a multimeter.
No connection alarm
of battery
Check whether the battery is not disconnected or whether the
breaker at the battery side is not closed.
