Growatt 10000UE - Operate by knock; Knock type and definition; Light background light and single knock; Data checking and parameters setting

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3. Check if the PV modules are well grounded.
4. Check if the inverter is well grounded.
Fig.4.1.1 Earth connection
5. Open the inverter cover to check if the inside grounding cable is well connected.
Fig.4.1.2 Inside earth connection
6. Check if the marked screw is loose or not. If loose, please tighten it.
Fig.4.1.3 Earth-connected screws
7. Disconnect PV terminals and measure the impedance between PV1+ and Earth, PV2+ and Earth,
PV- and Earth by multi-meter; check whether all the impedances are beyond 1 Mega ohm, if not,
please contact Growatt service.
Note: Inverter shell is also grounded.