8.8kw Fan Oscillating
Have a new site with a 8.8kw Sunsynk 7.1kw array. 1 of the 3 fans is acting odd. When all the fans are running 1 of the 3 runs 3 seconds fast and 3 seconds slow. No other site has this issue. Anyone else experience this?

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My 8kW does the same, but on the bottom fan only. My installer said this is normal, but I'm not sure I agree.