Schneider Conext error code W58
FET2 over-temperature (same condition as W57).
What to check, and in what order, is in the app. The flow Coach Electrical — entry diagnostic (converters / inverters / solar / monitors) walks this code step by step with the pass/fail measurements, wiring schematics and procedures that go with it, and it works offline in the bay.
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- Conext XW Inverter/Charger Maintenance (Service) Guide 977-0017-01-01 Rev B (covers XW 6048 / XW 4548 / XW 4024)Schneider Electric
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