CPU fault

What does 18 mean?

An internal CPU fault has occurred within the unit. This indicates a general internal processing error, which might be transient or indicate a more serious hardware issue.

• CPU internal error or watchdog timeout.
• Software exception or abnormal program execution.
• Data bus error or communication failure within the CPU.
• Critical system process failed to initialize.
• Parameter P0003 (fault acknowledgement) related issue.

Click steps to track your progress.

1. 1

   Reset the fault by switching off the DC 24 V supply voltage.