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10 Troubleshooting and Maintenance
Restart the inverter only after removing the fault that impairs safety performance.
As the inverter contains no component parts that can be maintained, never open
the enclosure, or replace any internal components.
To avoid the risk of electric shock, do not perform any other maintenance opera-
tions beyond those described in this manual. If necessary, contact your distributor
first. If the problem persists, contact SUNGROW. Otherwise, the losses caused is
not covered by the warranty.
Touching the PCB or other static sensitive components may cause damage to the
device.
•
Do not touch the circuit board unnecessarily.
•
Observe the regulations to protect against electrostatic and wear an anti-static
wrist strap.
10.2.2 Routine Maintenance
10.2.3 Replacing the Button Cell
Disconnect the inverter from the grid first, then the PV strings and the battery be-
fore any maintenance work.
Lethal voltage still exists in the inverter. Please wait at least 10 minutes and then
perform maintenance work.
There is a button cell on the inner PCB board. Contact SUNGROW for replacement when
the relevant fault alarm occurs.
Check the fastener, appearance, voltage, and resistance quarterly and annually.
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