PAGE 14
FOR SERVICE TECHNICIAN’S USE ONLY
DO NOT REMOVE OR DESTROY
TROUBLESHOOTING TESTS
TEST #1: Main Control
This test checks for incoming and outgoing power
to and from main control. This test assumes that
proper voltage is present at the outlet.
1.
Unplug washer or disconnect power.
2.
Remove console to access main control.
3.
Verify that ALL connectors are inserted
all the way into the main control.
4.
Plug in washer or reconnect power.
5.
With a voltmeter set to
AC
, connect black
probe to J12-3 (Neutral) and red probe to J12-1 (L1).
If 120VAC is present, go to step 6.
If 120VAC is not present, check the AC power
cord for continuity (See Figure 8, page 22.)
6.
Is the “Diagnostic LED” flashing or
continuously ‘ON’ or ‘OFF’? (See Figure 2
below for LED location.)
Main Control
Board Connectors
and Pinouts
(Figure 2)
J2 Valves &
Thermistor
Diagnostic LED
J1 Motor
J5 Heater Element
Flashing: (+5VDC present and micro
operating) proceed to Key Activation &
Encoder Test, page 3.
ON: (+5VDC present but micro failure)
continue to step 9.
OFF: (+5VDC missing or micro failure)
proceed to step 7.
7.
Check if console UI is affecting the main
control DC supply.
a.
Unplug washer or disconnect power.
b.
Remove connector
J18
from main control.
c.
Plug in washer or reconnect power.
d.
Recheck the Diagnostic LED per step 6.
If the diagnostic LED is now flashing, go
to Test #4: Keys and Encoders, “None of the
indicators light up”, step 4, page 17. If diagnostic
LED is not flashing, continue to step 8.
8.
Perform voltage checks inside header
J18
on the board –
do not short pins together
.
J1
Motor
J1-6
HF Return
J1-5
Open
J1-4 Blu VS3
J1-3 Yel VS1
J1-2
Open
J1-1 Red VS2
J2
Valves & Thermistor
J2-12
Open
J2-11
Open
J2-10 Blu Cold Valve
J2-9 Red Hot Valve
J2-8 Vlt
Oxi Valve (not
on all models)
J2-7 Gry Softener Valve
J2-6
Open
J2-5
Open
J2-4 Wht Neutral
J2-3
Open
J2-2 Blk
Valve Thermistor
J2-1 Blk
Rtn (VSS)
J4
Pumps & Shifter
J4-7 Orn Shifter
J4-5 Lt Blu Recirc. Pump (not on all models)
J4-3 Blu Drain Pump
J4-1 Wht Neutral
J5
Heater Element
J5-2 Gry Neutral
J5-1 Blk L1
J6
Lid Lock
J6-7 Red Lock Sw
J6-6
Open
J6-5 Grn Lid Sw
J6-4 Blu Home Sw
J6-3 Blk
Lock Motor
J6-2 Brn Lock Motor
J6-1 Wht Sw Out
J18
UI
J18-3 Blk Rtn (VSS)
J18-2 Blu Wide
J18-1 Yel +5VDC
J12
Power Cord
J12-3 Wht Neutral
J12-2 Grn Ground
J12-1 Blk L1
UI
POWER
CORD
LID L
OCK
MOTOR
VAL
VES & THERMISTOR
PUMPS &
SHIF
TER
HEA
TER
ELEMENT
J4 Pumps
& Shifter
J6 Lid
Lock
J18 User
Interface
J12 Power
Cord
= Pin 1