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SHU/SHI/SHV Dishwasher Quick Check Chart
1
st
Edition/Revision 0-A Tuesday, May 11, 1999
To check Measure If yes If no
ü
üü
ü Float switch
(cont.).
HINT: Any debris (e.g. a
cable tie) in dishwasher base
can move under float and turn
on float switch. Clean all
debris from dishwasher base.
HINT: Must pull out
dishwasher and remove left
side panel to access float
switch.
ü
üü
ü Aqua sensor
(SHU 53-- &
68—only)
ü
üü
ü Find three brown wires
at far right of control
module. Measure
resistance between
middle wire and left
(preferred) or right
wire (≥ 1 MΩ).
ü
üü
ü Sensor may be OK. ü
üü
ü Turn off dishwasher
and replace sensor.
HINT: The aqua
sensor does not
affect washability
and should not be
replaced (unless a
leak has occurred
around it).
HINT: Don't
check this
unless customer has brought
up long wash times (and has
measured them). The sensor
checks water clarity and adds
a wash/rinse cycle only when
the rinse water is still dirty.
HINT: Can also measure
resistance between inner
terminal (light) and either
outer terminal (sensor) of
sensor itself.
HINT: Due to nature of
sensor, resistance readings
can be inconsistent.
HINT: Must pull out
dishwasher and remove left
side panel to access sensor
(for measuring or replacing).
Sensor can be pulled out of
sensor assembly at rear of
sump.
ü
üü
ü Circulation
motor
ü
üü
ü At control module,
measure resistance
(SHU/I models)
between white/red wire
on 1
st
harness from left
& 2
nd
blue wire from
right on 4
th
harness
from left (≈ 10 Ω).
ü
üü
ü Circulation motor may
be OK – more testing
may be needed (if
debris entered
impeller).
ü
üü
ü Turn off dishwasher
and replace circulation
motor.
HINT: For SHV models,
measure between white/red
wire at left of 2
nd
harness &
white wire at middle of 4
th
harness.
HINT: Debris can get in if
filter basket wasn't properly
screwed in and locked. Don't
remove motor to clean
impeller – remove filter
basket/screen and reach
through right side of sump
into impeller.
HINT: Must pull out
dishwasher and remove or
tilt/block up tub to remove or
replace motor – do so only if
certain motor has failed or
impeller is jammed with
debris.
ü
üü
ü Detergent
dispenser
actuator
ü
üü
ü Resistance through
"wax" motor terminals
(≈ 2150 Ω).
ü
üü
ü Actuator motor may be
OK – more testing
may be needed.
ü
üü
ü Turn off dishwasher
and replace actuator
"wax" motor.
ü
üü
ü Top rack
only actuator
(SHU/I 68--
& SHV 48--
models
only).
ü
üü
ü At control module,
measure resistance
(SHU/I models)
between white wires of
3
rd
harness (from left) -
- (≈ 2150 Ω).
ü
üü
ü Actuator motor may be
OK – more testing
may be needed.
HINT: For SHV models,
measure between white/red
wire at left of 2
nd
harness &
white wire at middle of 4
th
harness.
ü
üü
ü Turn off dishwasher
and replace actuator
"wax" motor.
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