Flowchart A-19. Unit Resets But Will Not Dispense - Wayne Vista Series Service

Dispenser resets but
will not dispense
product.
Check the F1 fuse
on the solenoid drive
board. Replace if it is
open.
Check for 110VAC
output from the
solenoid drive
board to the relay(s)
and the solenoid
valve(s).
Is 110VAC
present?
Check for 110VAC
on valve and relay
select wires in the
junction box.
Is 110VAC
present?
Check actuator, or
relay coil for
continuity.
Is the
coil reading
an open circuit?
Replace defective
actuator or relay.

FLOWCHART A-19. UNIT RESETS BUT WILL NOT DISPENSE

November 1992
problem
corrected?
NO
NO
YES
NO
YES
YES
NO
Is the
YES
Replace solenoid
drive board.
Repair or replace the
defective internal
dispenser wiring.
Replace the actuator
coil or the relay.
END
Is the
problem
YES
corrected?
NO
Replace defective
computer.
Part No. 917543 Rev. A
91