We got the following fault in the MOP:

FIVA Integrator Saturation - FIVA Fault: Main Spool at drain position.

The FIVA controller integrator has compensated more than allowed.

Possible causes?

15 Feb '20, 20:53

Feb. 15, 2020, 8:53 p.m.
secondeng's gravatar image


This fault may occur due to:

  • Loose connection on FIVA pilot valve set point,
  • Mechanically Stuck FIVA pilot valve
  • FIVA main spool stuck at tank or injection position
  • FIVA pilot valve receives a shutdown but CCU does not
  • CCU CH.70 always ask an output more than 12mA or always less than 12 mA.
permanent link

15 Feb '20, 20:56

Feb. 15, 2020, 8:56 p.m.
cheng's gravatar image

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