FoxESS Community - Owners & Installers Forum

During commissioning of a KH10, a BUS volt fault occured when clipping on tbe ct to the mains. In settings, ct was then enabled and the ct reclamped. The "bus volt fault" was gone and a "ct lost fault", also recorded, was also gone and there was normal function until "grid lost fault" and "grid volt fault" occured during pv wake up the next morning causing intermittent EPS load power loss every minute. I set work mode from "self use" to "feed in" for now. When the battery arrives from the wholesaler I will set back to "self use" mode. I will have to wait until tomorrow morning to see if the problem persists after the "feed in" mode was set.

A hybrid inverter will not go into standby without a battery, it will shutdown as it uses the DC power (from solar/battery) to stay awake. The faults you mentioned at PV wake up are very typical of what you would expect to see. Firstly it needs enough PV in a steady state to wake up and then it will perform it’s grid check cycle which takes a couple of minutes before it goes on-line (assuming the PV is strong enough at this point to not be interrupted with clouds/shadows).

Once you have a battery installed the system will stay operational all of the time, if the battery has enough charge it will maintain the system, if it hits it’s minimum state of charge the inverter will trickle charge it to maintain operation - and the only time you will see start up error messages is when the inverter is started for the first time (or restarted).

Hi. Thanks for the replies. I rang tech support. I was asked to provide the SN to confirm if it needed a software upgrade. It did. It has been upgraded so it should be act as a grid inverter until the batteries arrive. Delays caused by high demand in Australia due to govt battery rebates