Cause : PID feedback detected error comes when the PID feedback error was out of the allowed range around the set point during the time window. This could be due to a variety of reasons, such as a loss of feedback signal, incorrect PID parameter settings, or problems with the feedback sensor or wiring.

"PFMF" PID feedback detected fault in Schneider ATV950 drive indicate "PID feedback detected error". This means there is an issue with the PID feedback signal.

1. Check for mechanical breakdown of pipes.
2. Check for water leakage.
3. Check for open discharge valve.
4. Check for fire hydrant opened.
5. Verify the settings of the monitoring function.