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SECTION FOUR
TROUBLESHOOTING AND DIAGNOSIS
TROUBLESHOOTING CHART
PROBLEM POSSIBLE CAUSE SOLUTION
Won’t Power Up
120VAC electrical supply.
Open AC cord.
Line filter open.
Machine control board open.
Lid Switch failure.
Check voltage supply to washer.
Check for voltage at the power cord con-
nection to the line filter.
Check voltage into and out of line filter.
With the washer off but connected to the
AC outlet, measure the AC voltage be-
tween Pins 4 and 2 at connector P16.
If “LS” is flashing, open and close lid to
clear fault code and restart cycle. Check
lid switch for contacts opening/closing.
“Start” touchpad failure.
Touch Pad failure.
Loose harness connections.
Check touchpad for continuity.
Check touchpad(s) for continuity.
Check touchpad ribbon connections to
machine control board.
Check touchpad for continuity.
Check Lid Switch contacts for open/
closing.
Check dispenser valve solenoid for con-
tinuity.
Check wiring connections at machine
control and log valve.
Check water supply and hose connec-
tions within washer.
AM Radio or TV
Interference
Shield capacitor open.
Replace lower wiring harness.
Won’t Start Cycle
Loose harness connections at Check harness connections.
control board(s).
Control Won’t Accept
Commands
STOP/CANCEL touchpad open.
Lid Switch failure.
Dispenser valve solenoid open.
Wiring connections loose/broken.
Water supply off or hose
connections within unit plugged or
disconnected.
Won’t Shut OFF
Won’t Dispense