Internal Circuit Fault

What does E. 13 mean?

This fault indicates a general internal circuit malfunction within the FR-A800 inverter. This is a broad category that suggests a hardware or firmware issue not covered by more specific fault codes.

• Hardware component failure within the inverter's control or power circuits.
• Internal communication error between different modules or processors.
• Corrupted firmware or unexpected software behavior.
• Electrical noise or transient event causing a temporary internal circuit disruption.
• Degradation of internal components due to age or environmental stress.

Click steps to track your progress.

1. 1

   Perform a power cycle of the FR-A800 inverter (turn OFF and then ON all power, including control power).

2. 2

   Check for any signs of physical damage, overheating, or burning smell from the inverter.

3. 3

   Ensure that the ambient temperature, humidity, and vibration levels are within the inverter's specified operating conditions.

4. 4

   Verify that the power supply to the inverter is stable and free from voltage sags, surges, or transients.

5. 5

   If the fault persists, it indicates a significant internal hardware failure. Contact Mitsubishi Electric service for advanced diagnostics or unit replacement.