Wayne Vista Series - B.3. THE DISPENSER ELECTRONIC MODULE (DEM)

85
November 1992 Part No. 917543 Rev. A
FLOWCHART A-13. 51 FAULT CODE
51 fault code.
Blend ratio error
exceeded
programmed
limits.
Does the
blend motor
move during
reset?
Check all valves and
tubes for flow
restriction.
Is there any
restriction in the
flow?
Check blend valve for
leaks between
chambers cracked
shoes. Repair/
replace as necessary.
Replace the
solenoid
drive board.
Is the
problem
corrected?
Replace the
computer.
END
Check the linkage to
the blend valve for
binding. Correct as
necessary.
Correct flow
restriction.
YES
NO
YES
NO
YES
JDB-FH-143-A
Is the
problem
corrected?
NO
2
2
Option 52
should be set at
5%. Option 53
should be set at
2 gallons. Reset
as necessary.
NO
YES
Is the
problem
corrected?
Check F2 on the
computer. Replace
as necessary.
Is the
problem
corrected?
3
YES
YES
NO
NO
3