Explanation
FlexiO cannot connect to your inverter, or the connection quality to the inverter is below a certain threshold.
A Modbus error implies that FlexiO isn’t running.
Your installation might or should be self-steering capable and thus fall-back to the local steering of your inverter.
Required action
Execute following steps
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Check if your inverter is powered on and does not display any error
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Unplug the power of your FlexiObox (small USB-C connector on the side, comparable with your phone battery charger connector), wait 5 seconds and plug in again: after approximately 1 minute the LED on top should be back continuous green
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Check if the error disappeared after 5 minutes.
Not solved?
If this error persists, contact your installer.