error Miller

Error Code Standby LED flashes

Standby LED flashing indicates a latching error has occurred. The unit is in standby mode due to an error condition.

? What Causes This

One of several possible latching errors has been detected: Check Input, Weld Cable, See Owner's Manual, or Cooler Power errors.

Press Standby button or turn off power to clear error.
Identify the specific error message on display (e.g., [CHEK] [INPT], [WELD] [CABL]).
Follow the remedy for the specific error.
If error does not clear or happens frequently, see Section 11-3.

Source: page 60 of the official manual

From the manual

This error code appears in: