Festo IFB05-03 Manual page 107

5. Diagnosis and error treatment
Festo P.BE−VIFB5−03−EN en 0503e
Stopping the test routine
1. Switch off the operating and load voltage supplies to the
valve terminal (pins 1 and 2).
2. Set the address selector switch and the DIL switch
elements to their original positions.
Remark:
If the yellow LED on the valves does not light up, it may be
due to one of the following causes:
the LED or the solenoid coil is defective.
Only type 04−B:
the internal 0.315 A fuse of the manifold sub−base is
burnt through (see chapter 5.6).
5−13