9
Troubleshooting Guide
NOTES:
■
For resistance checks, refer to “Dishwasher Strip Circuits” section.
■
For checking operation with diagnostics, refer to “Service Diagnostics
Cycle” section.
8-
Draining
(cont.)
2-
Drain Motor
Electrical
Problem
(cont.)
2. Debris stuck in
drain motor
impeller.
1. Unplug dishwasher or disconnect
power.
2. Remove drain motor and
dislodge debris from impeller.
3. Open fuse on
control to drain
motor.
Refer to “Fuse Service Check” in
“Meter Check of Loads and Fuses”
section.
4. Drain Motor
Drive circuit on the
control.
Unplug dishwasher or disconnect
power and replace control.
3-
Drain
Stuck On
Drain Motor Drive
circuit on the
control.
1. Unplug dishwasher or disconnect
power and replace control.
2. Inspect drain motor and
connections for overheating/
shorting. If evidence of overheating/
shorting exists, replace.
9-
Diverter
1-
Can’t Find
Position
1. Corroded or
loose connection
in diverter sensor/
motor circuit or
open/shorted
sensor/motor.
1. Check operation in Service
Diagnostics Cycle. Listen for cam
clicking as it rotates or inspect shaft
with mirror to see if rotating during
diverter interval. If rotating, it is
likely the sensor circuit.
2. Unplug dishwasher or disconnect
power and check connections in
Diverter Sensor and Motor circuit
with meter. Fix/replace open
connections/parts.
3. Inspect diverter sensor for
evidence of water or contaminants.
If yes, replace.
2. Mechanical
binding of diverter
shaft/disc.
Check operation of diverter motor
during diagnostics. Inspect diverter
shaft with mirror. If motor appears
to be on (vibrates, hums), but you
see limited rotation, replace diverter
and seal.
3. Open fuse on
control to diverter
motor.
Refer to “Fuse Service Check” in
“Meter Check of Loads and Fuses”
section.
4. Diverter Motor
Drive circuit on the
control.
Unplug dishwasher or disconnect
power and replace control.
2-
Stuck On
Diverter Drive
Circuit on the
control.
1. Unplug dishwasher or disconnect
power and replace control.
2. Inspect diverter motor and
connections for overheating/
shorting. If evidence of overheating/
shorting exists, replace.
3-
Disk
Missing
Control detected
diverter disk in
sump is missing.
Remove lower spray arm, turbo
zone assembly, rear feed tube, and
outlet cover. Verify the round
diverter disk is installed.
10-
Other
1-
Dispenser
Electrical
Problem
1. Loose
connection in
Dispenser circuit
and/or open
dispenser
solenoid.
Unplug dishwasher or disconnect
power and check resistances of
dispenser solenoid and all
connections in the Dispenser
circuit. Fix/replace open
connection/part.
2. Open fuse on
control to
dispenser.
Refer to “Fuse Service Check” in
“Meter Check of Loads and Fuses”
section.
3. Dispenser Drive
circuit on the
control.
Unplug dishwasher or disconnect
power and replace control.
3-
Drying Fan
Error
1. Loose
connection in fan
circuit, and/or
open fan motor.
Unplug dishwasher or disconnect
power and check resistances of fan
motor and all connections in the fan
circuit. Fix/replace open
connections or fan.
2. Fan drive circuit
on the control.
Unplug dishwasher or disconnect
power and replace control.
Function
Code
Problem
Code
Causes
What to Check
Customer
Description
Potential Causes
Check
Related
Error
Code
Clean LED Flashes
Control programmed
with self diagnostics.
Read error code from the
dishwasher and refer to
“Service Error Codes”
table. Run service
Diagnostics Test cycle to
read full history of error
codes.
Won’t Run or
Power Up (“Dead”
Keypad/Console)
- No Operation
- No Keypad
response
- No LEDs or
Display
1. No power to unit
or bad connection.
Check fuses, circuit
breakers, and junction box
connections.
2. Loose connections
in Power-up circuit or
between keypad(s)
and control.
1. Unplug dishwasher or
disconnect power.
2. Check continuity of
power connections to
control and connections
between keypad(s) and
control.
3. Model has an LCD
display and the
control has been
exchanged for one
that is not compatible
with the LCD display
module.
Unplug dishwasher or
disconnect power.
Verify correct control is
installed. Control should
have no 4-pin user
interface connector present
at P1B if it is configured for
an LCD model. Replace
control.
4. Control detected
door switch problem.
Refer to “Service Error
Codes” table.
5-1
5. User interface
or control.
1. Unplug dishwasher or
disconnect power.
Disassemble door and
inspect control power
connector (P4) and
adjacent PC board for
damage. Replace as
needed.
2. Refer to “Service Error
Codes” table for stuck key
(2-1). Run the diagnostic
check, Item (1).
- If drain motor turns on,
control is OK. Replace the
UI.
- If drain motor does not
turn on, replace control.
3. Inspect UI cable for
loose or damaged wiring.
Replace as needed.
4. Inspect UI assembly for
damage or contamination.
Replace UI as needed
2-1
Won’t Run and
LED for Start/
Resume Key Is
Blinking Slowly
1. By design, if the
door is opened for
more than 5 seconds
or power is
interrupted during a
cycle, the user must
press the Start/
Resume key to
resume operation.
Instruct customer. Refer to
Use and Care Guide.
2. Start/Resume key
not responding.
See “One or More Keys
Won’t Respond.”
3. Control detected
door switch problem.
Refer to “Service Error
Codes” table.
5-1
Won’t Run and
All LEDs On
Software or hardware
incompatibility
problem with control.
Refer to “Service Error
Codes Table.”
1-2
Won’t Start and
Start/Resume Key
LED Flashes
3 Times When
Start/Resume Key
Is Pressed
Control looks for door
to open between
cycles.
- Customer has not
opened door since
last cycle.
- Door switch
contacts stuck closed.
Refer to “Service Error
Codes” table.
5-2
