Turn off the solar supply main switch or inverter ac isolator if installed.
Solar king inverter relay failure.
Additionally you may hear a clicking from the inverter as the relays inside the unit trying to pull in.
The screen is showing relay failure.
Error code 120 when a growatt solar inverter displays the error code 120 it means that there is a problem with the current sensor.
There are two signs that you have this issue.
An error code 117 on a growatt solar inverter means that there is a problem in the relay circuit.
Assuming the inverter is accurate in diagnosis then ideally a relay replacement would be the simplest cheapest solution.
Wait for approximately 1 minute.
This fault can pertain to water ingress or panel related earth faults.
Turn on the pv.
We recommend a health check to eliminate an external cause for this fault prior to purchasing a new inverter.
Try to restart the inverter and if the problem persists you should already contact your solar inverter installer.
The fault light is on.
If this is a permanent fault the inverter requires replacement.
Follow the shut down procedure below.
If so find out what it means and what you can do about it here with gold coast solar power solutions.
Turn off the pv array dc isolator located at the inverter.
A solar king solar inverter relay failure message occurs when an internal relay inside the inverter fails to operate correctly.
Turn on the solar supply main switch and the ac isolator if installed.