Posted December 12, 20222 yr Hi all, Had the sunsynk inverter suddenly stop wanting to charge or let the grid through after a firmware update today. On the flow chart screen - you can see voltage and even the LED AC light illuminates but the internal relay never closes to allow power through. Strange thing is, you can no longer see frequency on the flow chart page which i assume is one of the qualifiers for the relay to close. Strange as the system worked find for 48hrs on grid and gen. The site gets bad voltage so is protected by a Soltek AVS which is happy long enough for the inverter to synchronize with the grid. Asking Synsynk to roll back FW and will update. Gen/grid charge is enabled. Time box is unchecked. Min grid draw is 80W Kind regards, S
December 13, 20222 yr Author Okay, i have done a factory reset on the inverter and now I can see the frequency. Trying to charge the batteries via a 5kVA generator on a change over switch as there is load shedding. The inverter accepts the power then the rely opens and kicks out the gen supply. Have lowered the charge current to 1A and seemed to hold and accept but still very unstable. Have also maxed out under and over voltage plus frequency. Will wait and see if grid comes back tonight and it behaves.
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