Input Current Sensor Error

What does 04 mean?

This fault indicates a problem with the input current sensor, which is typically located on the power circuit board, detected during error postponement (U9 status). A faulty sensor will provide incorrect current readings to the control system, potentially leading to improper current monitoring, incorrect protection responses, or operational instability and component damage.

Additional Steps

Steps 1–2 are listed in Priority Fix.

1. 3

   Inspect the power circuit board for any signs of damage or malfunction related to the current sensing circuit.

2. 4

   If the sensor is confirmed faulty or the related circuitry on the board is damaged, replace the power circuit board.