CPU Error

What does E11 mean?

This critical fault indicates a malfunction within the inverter's central processing unit (CPU). A CPU error implies a severe internal hardware or software issue, rendering the inverter unable to perform its control functions and resulting in an immediate trip and shutdown of the motor output.

Additional Steps

Steps 1–2 are listed in Priority Fix.

1. 3

   Check for any external electrical noise or power supply disturbances that might affect the CPU's operation.

2. 4

   If the fault cannot be cleared after these steps, the inverter's main control board (CPU) is likely damaged and requires replacement.