CPU Internal A/D Converter Fault

What does CPF04 mean?

A fault in the CPU's internal Analog-to-Digital converter was detected. This issue typically results from noise or electrical spikes on the control circuit input terminals, impairing the CPU's ability to accurately process internal analog signals.

Additional Steps

Steps 1–2 are listed in Priority Fix.

1. 3

   Replace the control board if the fault continues, as it indicates a CPU hardware issue.