Schneider Conext error code W57
FET1 over-temperature: internal temperature is over 85 degC (185 degF). Causes incl. high AC input voltage while charging, too-large a load too long while inverting, high ambient, failed cooling fan, or blocked airflow.
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
Related codes
- W44Battery over-temperature: battery temperature is over 50 degC (122…
- W45DC bulk capacitor over-temperature (100 degC / 212 degF).
- W48DC under-voltage: battery voltage is below 47 V (48 V systems) or…
- W49DC over-voltage: battery voltage is above 68 V (48 V systems).
- W58FET2 over-temperature (same condition as W57).
- W63AC overload: excessive load on the AC output.
- W64AC overload (same condition as W63).
- W68Transformer over-temperature (same condition/response as W57).
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