My SE3000A-US inverter has been in operation nearly two years. Yesterday, I shut it down to work on the networking and when I powered it back up, it wouldn't produce any AC power. All 12 optimizers reported P_ok, the AC voltage and frequency were good and the DC voltage was initially good, but fell down to safe voltage levels (~1.1 V per optimizer). I tried a variety of reboots, but nothing worked.
I had shut the system off by first turning the rotary disconnect, a bad idea when the system is actively producing power. The recommended shutdown procedure is to toggle the safety switch to the off position first, and once the voltage is at a safe level, other disconnects can be used.
I submitted an online support ticket yesterday, but with no response after 24 hr, I called in for help this morning. They directed me to re-pair the optimizers, which restored the inverter to normal operation. Only cost me about 15 KWh of production, $3 for a cheap lesson learned.
I had shut the system off by first turning the rotary disconnect, a bad idea when the system is actively producing power. The recommended shutdown procedure is to toggle the safety switch to the off position first, and once the voltage is at a safe level, other disconnects can be used.
I submitted an online support ticket yesterday, but with no response after 24 hr, I called in for help this morning. They directed me to re-pair the optimizers, which restored the inverter to normal operation. Only cost me about 15 KWh of production, $3 for a cheap lesson learned.
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