Operation Instructions 9
4 FAQ (Frequently asked questions)
Sometimes, your PV system does not work properly, we recommend the following
solutions for quick troubleshooting. If there is a fault, the red LED will light up
instead of the green LED.
1. Check the impedance between PV (+) & PV
(-) and the inverter is earthed. The impedance
must be greater than 2M.
2. Check whether the AC-side has contacts with
earth.
1. The ground current is too high.
2. After cut off the AC side connection, unplug
the inputs from the PV generator and check
the peripheral AC system.
3. After the cause is cleared, re-plug the PV
panel and AC connection, and check
PV-Inverter status.
Grid Fault
Fac Over Range
Vac Over Range
1. Wait for a moment, if the grid returns to
normal, PV-Inverter automatically restarts.
2. Make sure grid voltage and frequency meet
the specifications.
1. Grid is not connected.
2. Check grid connection cables.
3. Check grid usability.
4. If grid is ok, and the problem persists, maybe
the fuse in the inverter is open, please call
service.
1. The internal temperature is higher than
specified normal value.
2. Find a way to reduce the ambient temperature.
3. Or move the inverter to a cooler environment.
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