SMA Error Codes
10 diagnostic articles for SMA inverters — verified against manufacturer documentation.
SMA Inverter Arc Fault — The Tap-Twice Reset Explained
When your SMA Sunny Boy detects an electric arc in the DC wiring, it…
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SMA Inverter K1 Open Error — Does the Inverter Need Replacing?
The 'K1 Open' message means your SMA inverter's self-test found a problem with its…
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SMA Inverter Event 401 — Why the Inverter Left the Grid
Event 401 is SMA's 'Grid incident' message: your inverter disconnected from the utility grid…
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SMA Inverter Code 1302 — When the Grid Voltage Never Arrives
Event 1302 means your SMA inverter can't detect any grid voltage at all —…
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SMA Inverter Fac-Bfr or Fac-Srr — What the Grid Frequency Error Means
Fac-Bfr or Fac-Srr means the AC grid frequency is outside the allowable range. Your…
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SMA Inverter Event 8206 — Electric Arc Detected and What to Do Next
Event 8206 means your SMA inverter's arc-fault protection detected an electric arc in the…
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SMA Inverter Events 202, 203 and 205 — Grid Gone or Grid Too Low?
Events 202, 203, and 205 all share one message — 'grid incident': the utility…
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SMA Inverter Event 3501/3503 — Ground Fault Found, What to Do Next
Events 3501 and 3503 mean your SMA inverter has detected a ground fault in…
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SMA Inverter Event 4301 — When Your AFCI Detects an Electric Arc
Event 4301 means your SMA inverter's arc fault circuit interrupter (AFCI) detected an electric…
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SMA Inverter Event 101/102/103 — Grid Fault and What It Means for You
Events 101, 102, and 103 on your SMA inverter all mean the same thing:…
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