P9F4 : Pressure Sensor Failed Inlet

To avoid serious injury follow all warnings and instructions in the manual. Wear appropriate personal protective equipment.

The number on the end of the error code refers to which pump is having the issue. For example P9F#.

Inlet pressure transducer has failed.

 

  • Relieve system pressure. 
  • Verify connections, or replace if reconnecting does not eliminate the alarm.