Wayne Dresser Vista 1 Series Service Manual page 96

86
Part No. 920160 Rev A
Fault code 14, illegal forward pulse.
Forward pulse received from a grade
not selected.
Check diaphram valve (or flow
control valve blender only) of
the unselected product
indicated by the fault source
in the error code display. Look
for leaks or debris holding it open.
Repair as necessary.
Check Solenoid drive board for
110 VAC (24VDC blender only)
output to valves when there
should be none.
Is
there
110 VAC or
(24VDC blenders)
present?
NO
Replace the two
stage actuator
(non-blender only).
Is
the
problem
corrected?
NO
Replace the
computer assy.
END
FIGURE A-13. FAULT CODE 14.
Is
the
problem
corrected?
NO
Replace
Solenoid
YES
Drive
Board
YES
YES
February 1997