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4

Battery Over Temperature Shutdown — The battery is too hot

Schneider Electric · MPPT 80

What does 4 mean?

The battery temperature is too high, causing the system to shut down to prevent damage. Charging will resume once the battery has cooled down sufficiently.

Common Causes

  • The battery is too hot.
  • High ambient temperature.
  • Overcharging conditions.

Repair Steps & Checklist

Click steps to track your progress.

  1. 1

    Ensure the battery is located in a cool, well-ventilated area.

  2. 2

    Check charging settings to ensure they are appropriate for the battery type and conditions.

  3. 3

    Allow the battery temperature to decrease.

  4. 4

    Verify the battery temperature sensor is correctly installed and functioning.

  5. 5

    Charging will resume automatically when the temperature is within range.

Browse all codes in this manual (34)
Verified technical data. Last updated: April 2026

Related Faults

10Output Under-voltage Immediate — The DC Output Voltage is too low11Output Under-voltage — The DC Output Voltage is too low2Capacitor Over Temperature — The Capacitors are too hot
Source: MPPT 80
Open Manual (Page 54)Search more codes in this manual