Wayne Dresser Vista 1 Series Service Manual page 100

90
Part No. 920160 Rev A
Fault Code 51.
Blend raito error exceeded
programmed limits.
Option 52 should be set
at 2%. Option 53 should
be set at 1.2 gallons.
Reset if necessary.
Check for flow restriction on
on END grade by observing
LO and HI meters. Check all
valves and tubing for
obstructions. Clear strainers
and change filter.
Corrected?
While dispensing is
DS1 lit and DS2
YES
blinking on the
Solenoid Drive
Replace Solenoid
Drive Board
Is Problem
Corrected?
On the solenoid Drive Board check connectors J3
(output to valve coils) and J4 (24VDC input). Repair
or Replace wire harness into J3 and/or replace
proportional flow valve as necessary .
Is Problem
Corrected?
Replace Duplex II
Computer
FIGURE A-17. FAULT CODE 51.
Is
Problem
YES
NO
Board?
NO
YES
NO
YES
NO
END
February 1997