Whirlpool 925 series Troubleshooting guide

CONSUMER SERVICES TECHNICAL
EDUCATION GROUP PRESENTS
KD-11
1998 WHIRLPOOL
POWER CLEAN
FILTER
DISHWASHERS
JOB AID
Part No. 4322451L
I
INTRODUCTION
This Job Aid, “1998 WHIRLPOOL POWER CLEAN FILTER DISHWASHERS,” (Part No. 4322451)
provides specific information for the installation, service and repair of 1998 Whirlpool Dishwashers
equipped with Power Clean Filter pump and motor modules.
“1998 WHIRLPOOL POWER CLEAN FILTER DISHWASHERS,” has been compiled to provide the
most recent information on design, features, troubleshooting, service and repair procedures.
GOALS AND OBJECTIVES
The goal of this Job Aid is to provide detailed information that will enable the service technician to
properly diagnose malfunctions and repair the 1998 lineup of Dishwashers.
The objectives of the Job Aid are:
The service technician will •
•
•
•
Understand proper safety precautions.
Successfully troubleshoot and diagnose malfunction.
Successfully perform necessary repairs.
Successfully return the dishwasher to proper operational status.
ADDITIONAL INFORMATION
Complete instructions on the disassembly and servicing of the Power Clean Filter Module are available in the Job Aid, “POWER CLEAN FILTER PUMP MOTOR ASSEMBLY SERVICE,” Part No.
4322455. This Job Aid, and the accompanying video tape, Part No. 4322456V, have been revised to
include specific details on the most recent version of this dishwasher pump and motor assembly.
CORPORATION
WHIRLPOOL CORPORATION ASSUMES NO RESPONSIBILITY
FOR ANY REPAIRS MADE ON OUR PRODUCTS BY ANYONE
OTHER THAN AUTHORIZED SERVICE TECHNICIANS.
© 1998 Whirlpool Corporation, Benton Harbor, MI 49022
II
TABLE OF CONTENTS
INTRODUCTION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . II
TABLE OF CONTENTS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . III
SECTION ONE
THEORY OF OPERATION
Console Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
Pump and Motor Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
SECTION TWO
COMPONENT ACCESS
Component Location . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Removing Access and Outer Door Panels . . . . . . . . . . . . . . . . . . . . . . . . . 4
Removing the Heater Element . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Replacing the Heater Element . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Servicing the Vertical Water Tube . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Removing the Pump and Motor Assembly . . . . . . . . . . . . . . . . . . . . . . . . 7
Servicing the Operating Thermostat . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Servicing the Soil Sensing System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Removing the Inside Door Panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Dishwasher Dispenser Disassembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
SECTION THREE
DIAGNOSIS AND TROUBLESHOOTING
Troubleshooting Guide (Model DU910PFG) . . . . . . . . . . . . . . . . . . . . . . . 11
Troubleshooting Guide (Models DP920PFG, DU920PFG
GU940SCG, GU960SCG, GU980SCG) . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Component Diagnosis . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
SECTION FOUR
TECH TIPS
Wiring Diagram and Cycle Timing Chart (Model DU910PFG). . . . . . . . . . 15
Strip Circuits (Model DU910PFG) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Wiring Diagram (Model DP920PFG, DU920PFG, GU940SCG,
GU960SCG, GU980SCG) . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . . . . . . 18
Cycle Timing Chart (Model DP920PFG, DU920PFG,
GU940SCG, GU960SCG, GU980SCG) . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Cycle Timing Chart Notes (Model DP920PFG, DU920PFG,
GU940SCG, GU960SCG, GU980SCG) . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
Diagnostic and Sales Demo Timing Chart (Model DP920PFG,
DU920PFG, GU940SCG, GU960SCG, GU980SCG) . . . . . . . . . . . . . . . . 21
Strip Circuits (Model DP920PFG, DU920PFG, GU940SCG,
GU960SCG, GU980SCG) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
Custom Door Panel Conversion . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
Floor Mount Kit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
Warranty Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
Model and Serial Number Designators . . . . . . . . . . . . . . . . . . . . . . . . . . 29
Service Contact Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
III
IV
Section One
THEORY OF OPERATION
1998 POWER CLEAN FILTER MODELS
Console Configuration
Model DU910PFG
Models DP920PFG, DU920PFG
Model GU940SCG
Model GU960SCG
Model GU980SCG
1
PUMP AND MOTOR OPERATION
1. Once the tub has filled with hot water the motor begins to rotate forcing the water up through the
pump chamber and out through the spray arms. Two spray jets on the underside of the lower
spray arm direct water down onto the fine mesh screen of the pump housing to clear soils that
may collect there during the wash cycle.
2. As water and soils return to the lower pump area, the chopper blade grinds the particles into
smaller sizes that then pass through the perforated plate into the upper chamber of the pump.
The pump impeller causes the soil ladened water to be lifted and moved to the outer edges of
the pump chamber where they are forced into the separator. Clean water is then forced up
through the spray arms and fine mesh screen.
3. When the drain cycle begins, the drive motor changes direction. This relieves the pressure on
the two check balls, opening the drain system.
4. Water is pumped from the tub carrying soils from the separator into the drain sump of the pump.
5. Soiled water is pumped out of the dishwasher through the check valve and drain hose.
2
Section Two
COMPONENT ACCESS
COMPONENT LOCATION
INDICATOR
LIGHTS
TIMER
DETERGENT
AND RINSE AID
DISPENSER
ASSEMBLY
PROGRAM
SWITCHES
HEATER
LATCH
ASSEMBLY
FILL
VALVE
PUMP AND
MOTOR
ASSEMBLY
MOTOR
RELAY
OPERATING
THERMOSTAT
(Attached to bottom
of pump housing)
FLOAT
SWITCH
3
HI LIMIT
THERMOSTAT
Removing Access and Outer Door Panels
1. Loosen but do not remove the two (2) toe panel screws below the access panel. Remove and
set aside the two (2) screws above the access panel. (Fig. 2-1)
2. Remove the access panel assembly by sliding it upward to clear the loosened screws. (Fig. 2-1)
3. Remove the two (2) screws from the bottom of the outer door panel. (Fig. 2-1)
4. Pull the bottom of the outer door panel outward and slide it down approximately ¼” to ½”. The
panel will then be free for removal. (Fig. 2-1, inset)
5. Remove the existing door insulation. Access to the detergent and rinse aid dispensers is now
possible.
Fig. 2-1
4
Removing the Heater Element
From beneath the cabinet:
1. Remove the front access panel. (See Removing the Outer Door Panel)
2. Pull the spade connectors off the heater element terminals.
3. Unscrew the two (2) nuts securing the heater element to the bottom of the tub. (Fig. 2-2)
From inside the tub:
4. Remove the lower dish rack.
5. Remove the lower spray arm.
6. Slide the metal disks from the metal clips securing the left and right sides of the heater element.
7. Carefully lift the heater element from the unit.
Element Retaining Nuts (2)
Fig. 2-2
Replacing the Heater Element
From inside the tub:
1. Carefully place the terminal ends of the heater element through the two (2) holes at the
bottom rear of the cabinet.
2. Slide the metal disks into the clips to secure the left and right sides of the heater element.
3. Replace the lower spray arm.
4. Replace the lower dish rack.
From underneath the cabinet:
5. Secure the heater element in place with two (2) nuts. Be sure the element is seated firmly
against the tub.
6. Slide the spade connectors onto the heater element terminals.
7. Replace the front access panel.
5
Servicing the Vertical Water Tube
The vertical water tube in these models delivers
water to the spray arm mounted underneath the
upper dish rack and a smaller spray arm mounted
at the top of the dishwasher tub. (Fig. 2-3)
If the pump and motor assembly must be
removed for servicing, the vertical water tube
must be disconnected from the pump cover as
follows:
Securing
Tab
1. Remove the upper dish rack.
2. Dislodge the upper portion of the
vertical water tube from the plastic
knob on the back of the tub by pressing
down on the nozzle. (Fig. 2-4)
Fig. 2-6-3
3. Pull the securing tabs of the clamp holding
the internal water feed tube to the pump
outlet nozzle and remove the clamp. (Fig. 2-5)
PUSH
DOWN ON
NOZZLE
4. Rotate the lower end of the tube either left
or right off the pump nozzle. (Fig. 2-6)
Fig. 2-4
Securing
Clamp
PULL
PULL
Securing
Tab
Securing
Tab
Internal
Water
Tube
O-Ring
Fig. 2-5
Fig. 2-6
-- NOTE -Do not pull the vertical water tube forward or up in an attempt to remove it from the pump nozzle.
The smaller spray arm at the top of the tub does not need to be removed
to service the pump and motor assembly.
6
Removing the Pump Motor Assembly
1. Unscrew and remove the nozzle cap and remove
the nozzle bearing and spray arm. (Fig. 2-7)
SPRAY ARM
Fig. 2-7
NOZZLE
CAP
2. Disconnect the wiring harness from the motor
harness plug.
3. Rubber clamps secure the pump and motor
assembly to the tub. Rotate these inward 90°.
(Fig. 2-8)
NOZZLE BEARING
4. Remove the drain hose and clamp from the
check valve and unscrew the check valve from the pump. (Fig. 2-9)
5. Remove the tuned sound absorber. Use an open-end wrench to loosen the shaft from the
motor. Do not loosen the sound absorber by torquing on the large tuned resonator.
-- NOTE -A small container will be required to catch water from the drain hose after removal.
Check Valve
Drain Hose
Clamp
Drain
Hose
Tuned
Sound
Absorber
Clamp
Shown Rotated
Inward 90°
Fig. 2-8
Fig. 2-9
6. Remove the pump and motor assembly by pulling up through the inside of the tub. (Fig. 2-10)
Fig. 2-10
7
Servicing the Operating Thermostat
The operating thermostat is secured to the bottom
of the pump housing. (Fig. 2-11)
1. Disconnect the two (2) wiring harness leads
from the terminals on the thermostat.
2. Remove the two (2) Hex-head screws
securing the thermostat to the pump housing.
Operating
Thermostat
Fig. 2-11
Servicing the Soil Sensing System
The Soil Sensing System consists of a pressure sensitive switch connected to the dishwasher pump
base. (Fig. 2-12) The system detects excessive amounts of food soils during the sensing portion of the
wash cycle and signals the electronic control board to either terminate the wash cycle and initiate
drain to flush soils from the system or skip certain parts of the heavy soil cycle.
The pressure switch is connected to the pump base through a plastic hose. The pressure switch is
secured to the bottom of the dishwasher tub by two (2) Hex- head screws.
Pressure Switch
Fig. 2-12
Plastic Tube
T-15
TORX
Removing the Inside Door Panel
1. Disconnect the dishwasher from the electrical supply.
2. Disconnect the end of the door springs
from the door spring tension adjustment
holes in the frame runner.
3. Open the dishwasher door and remove the
eight (8) T-15 Torx screws securing the inner
door panel from the door frame. (Fig. 2-13)
Fig. 2-13
Inner Door
Panel
4. Slide the inner door panel back toward the dishFig. 2-14
washer to disengage the spring loaded locking
tab from the door panel, then lift the door panel SLIDE INNER DOOR
PANEL TOWARD
away from the door. (Fig. 2-14)
DISHWASHER
4. Remove the control cover.
8
Spring Loaded
Locking Tab
Dishwasher Dispenser
Disassembly
1.
Remove the drawbar spring. (Fig. 2-15)
2.
Grasp the lower edge of the drawbar
and pull it away from the panel stop.
Slide the drawbar down until the draw
bar holes align with the locking tabs,
then remove the drawbar. Note how the
locating tabs behind the drawbar align
with their respec-tive locating holes in
the drawbar. (Fig. 2-16)
3.
Turn the wet agent cap and seal assembly counterclockwise and remove it.
(Fig. 2-17)
4.
Remove the seal from the cap.
5.
Use Special Tool - Part No. 303918 or a
¾” socket to press over the attaching
tabs in the wet agent cap opening.
Remove wet agent dispenser assembly.
(Fig. 2-17)
6.
Remove wet agent dispenser actuator
by spreading the two (2) locking tabs.
(Fig. 2-18)
7.
Remove the actuator slide from the wet
agent dispenser actuator.
8.
Remove the diaphragm spring and
diaphragm.
9.
Use a screwdriver to gently release the
lower tab and remove the detergent
door actuator assembly. As you do,
note the position of the door latch level
through the hole in the lower slide.
(Fig. 2-19)
10.
Remove the detergent door latch by
carefully spreading the latch snap
locking tabs apart with a screwdriver
while pushing firmly against the end of
the door latch lever until the lever is
released through the hole.
11.
Remove the upper slide, the slide
spring and the lower slide. (Fig. 2-20)
Fig. 2-15
Fig. 2-16
9
Fig. 2-17
Fig. 2-18
Fig. 2-19
Fig. 2-20
10
Section Three
DIAGNOSIS AND TROUBLESHOOTING
TROUBLESHOOTING GUIDE
Model DU910PFG
PRECAUTIONS TO BE OBSERVED WHILE
TROUBLESHOOTING
Always check wiring harness and connectors before initiating any test procedures.
Disconnect electric power from the dishwasher before touching the printed circuit boards or re-seating wire connectors.
Voltage checks should be made by inserting meter probes beside the wires in the connector blocks with the electric power source on
and the connector block plugged in.
Resistance checks should be made on components with the electric power off and the connector blocks disconnected.
PROBLEM
Dishwasher does not run or
stops during a cycle
POSSIBLE CAUSES
1.
Door is not latching properly.
1.
2.
3.
Child lock is "ON".
Wash Cycle not set properly.
2.
3.
4.
Household fuse blown or circuit
breaker tripped.
Washer is not wired into a circuit with
proper voltage.
4.
1.
Overflow protection float is stuck in
"up" position.
1.
2.
Fill valve is inoperable.
2.
3.
Open timer contacts.
3.
1.
Air gap (if installed) is clogged.
1.
2.
Pump motor is inoperable.
2.
3.
Open timer contacts.
5.
Dishwasher will not fill
Dishwasher will not drain
CORRECTION/TEST
5.
3.
Dishwasher will not
dry dishes
1.
Heater element burned out.
1.
2.
HI-limit thermostat inoperable.
2.
3.
Open circuit between timer and
heater.
3.
11
Check to make sure handle link
is properly seated in door latch
assembly. Check that the door
switch is opening and closing
properly.
Turn child lock "OFF"
Review setting Wash Cycles in
the Use and Care Guide.
Have a qualified electrician check
the circuit breaker or fuse.
Have customer call a qualified
electrician.
Check that the overflow
protection float is free to move
"up" and "down". Check that the
overfill switch in opening and
closing properly.
Check for continuity between
contacts on fill valve.
Test timer contacts.
Follow air gap manufacturer's
direction for cleaning.
Disconnect pump motor from
wiring harness and check for
continuity.
Test timer contacts.
Check for continuity between the
terminals of the heater element.
Check for continuity between
terminals of the hi-limit
thermostat.
Check for continuity between
timer switch contacts and heater.
TROUBLESHOOTING GUIDE
Models DP920PFG, DU920PFG, GU940SCG, GU960SCG and
GU980SCG
PRECAUTIONS TO BE OBSERVED WHILE
TROUBLESHOOTING
Always check wiring harness and connectors before initiating any test procedures.
Disconnect electric power from the dishwasher before touching the printed circuit boards or re-seating wire connectors.
Voltage checks should be made by inserting meter probes beside the wires in the connector blocks with the electric power source
on and the connector block plugged in.
Resistance checks should be made on components with the electric power off and the connector blocks disconnected.
PROBLEM
Dishwasher does not run or
stops during a cycle
POSSIBLE CAUSES
1.
Door is not latching properly.
1.
2.
3.
Child lock is "ON".
Wash Cycle not set properly.
2.
3.
4.
Household fuse blown or circuit
breaker tripped.
Washer is not wired into a circuit with
proper voltage.
4.
1.
Overflow protection float is stuck in
"up" position.
1.
2.
Fill valve is inoperable.
2.
3.
Control board is inoperable.
3.
1.
Air gap (if installed) is clogged.
1.
2.
Pump motor is inoperable
2.
3.
Control board is inoperable.
3.
1.
Heater element burned out.
1.
2.
Hi-limit thermostat inoperable.
2.
5.
Dishwasher will not fill
Dishwasher will not drain
Dishwasher will not
dry dishes
CORRECTION/TEST
12
5.
Check to make sure handle link
is properly seated in door latch
assembly. Check that the door
switch is opening and closing
properly.
Turn child lock "OFF"
Review setting Wash Cycles in
the Use and Care Guide.
Have a qualified electrician check
the circuit breaker or fuse.
Have customer call a qualified
electrician.
Check that the overflow
protection float is free to move
"up" and "down". Check that the
overfill switch in opening and
closing properly.
Check for continuity between
contacts on fill valve.
Check for 110VAC between P2-5
and P12-3.
Follow air gap manufacturer's
direction for cleaning.
Disconnect pump motor from
wiring harness and check for
continuity between V & BU, V &
GY and V & Y.
Check for 110VAC between P10
and P3, P10 and P5 and P10
and P4.
Check for continuity between the
terminals of the heater element.
Check for 110VAC between P6
and P8.
Check for continuity between
terminals of the hi-limit
thermostat.
COMPONENT TESTING
PRECAUTIONS TO BE OBSERVED WHILE DIAGNOSING
PROBLEM COMPONENTS
Disconnect electric power from the dishwasher.
Voltage checks should be made by inserting meter probes beside the wires in the connector blocks with the electric power source on
and the connector block plugged in.
Resistance checks should be made on components with the electric power off and the connector blocks disconnected.
COMPONENT SCHEMATIC
Motor Start Relay
TESTING PROCEDURE
1.
2.
3.
4.
5.
6.
Drive Motor
1.
2.
3.
4.
5.
6.
Thermal Fuse
1.
2.
3.
Heater Element
1.
2.
3.
Fill Valve
1.
2.
3.
Overfill Switch
1.
2.
3.
4.
Disconnect the wire connectors and
remove relay from unit.
Set VOM meter on the Rx1 scale.
Set the relay upright.
Measure resistance between blue
and violet contacts.
Turn relay upside-down.
Measure resistance between blue
and violet contacts.
RESULTS
1.
2.
Relay upright - meter should read
º (infinity.)
Relay upside-down - meter should
read less than two (2)Ω.
Disconnect the motor wiring harness
1.
plug from the motor connector.
2.
Set VOM meter on the Rx1 scale.
Connect one probe to the white/violet
3.
connector.
Connect the other probe to the blue/
white connector.
Connect the meter probe to the yellow
connector.
Connect the probe to the grey
connector.
Violet to blue - meter should read
2.0 - 3.4Ω.
Violet to Yellow - meter should
read 4.2 - 7.0Ω.
Violet to Gray - meter should
read 4.2 - 7.0Ω.
Disconnect wires connectors from the
thermal fuse terminals.
Set VOM meter to read Rx1 scale.
Measure resistance between thermal
fuse terminals.
1.
Meter should read 0Ω.
Disconnect the wire connectors from
the heater element terminals.
Set VOM meter to read Rx1 scale.
Measure resistance between heater
element terminals.
1.
Meter should read 25 - 35Ω.
Disconnect the wiring harness plug
from the fill valve connector.
Set VOM meter to read Rx1 scale.
Measure resistance between the
terminals of the fill valve.
1.
Meter should read approximately
700Ω.
Disconnect the wires connectors from
the overfill switch terminals.
Set VOM meter to read Rx1 scale.
Measure resistance between switch
terminals.
Block the float in the UP (full) position
and measure resistance again.
1.
Float DOWN - meter should read
0Ω.
Float UP - meter should read
º (infinity).
13
2.
COMPONENT SCHEMATIC
Timer Motor
TESTING PROCEDURE
1.
2.
3.
Timer
1.
2.
3.
4.
5.
6.
Dispenser Mechanism
1.
2.
3.
4.
RESULTS
Disconnect the Wiring harness
connector from the timer assembly.
Set VOM meter on the Rx1 scale.
Measure resistance between timer
motor terminals.
1.
Meter should read 1800 - 3000Ω.
Disconnect the wiring harness
connector from the timer assembly.
Set VOM meter on the Rx1 scale.
Connect one probe to contact 31.
(Tan)
Connect the other probe to the timer
contact to be tested.
Manually advance the timer until the
contact closes.
Manually advance the timer until the
contact opens.
1.
Contact CLOSED - meter should
read 0Ω.
Contact OPEN - meter should
read º (infinity).
Remove the front door panel.
Remove the drip cover.
Latch the detergent door closed.
Manually advance the timer through a
complete cycle slowly.
1.
2.
2.
3.
14
At 12 o’clock position - Draw bars
will move upward causing the
detergent actuator assembly to
release the latch and detergent
cup should open.
At 4 o’clock position - Draw bars
will again move upward causing
the wetting agent actuator to
release wetting agent.
From the 6 o’clock position to the
8 o’clock position the draw bars
are driven down to reset the
mechanism.
Section Four
TECH TIPS
Model DU910PFG
Wiring Diagram
Cycle Timing Charts
15
Strip Circuits (DU910PFG)
1.
Fill
2.
Water Heat
3.
Wash
4.
5.
Drain
Heat Dry
16
Models DP920PFG, DU920PFG, GU940SCG,
GU960SCG & GU980SCG
WIRING DIAGRAM
17
Cycle Timing Chart
18
CYCLE TIMING CHART NOTES
Note 1:
Pre-Wash Sense Interval
Pressure switch contact closure at any time during this interval causes the
cycle to jump to interval 37. Immediately. For the normal cycle, the heater is
“off” during this interval. For the heavy and pots-n-pans cycles the heater is
“on” during this interval. The power scour option changes this interval to a 16
minute heated wash interval for all 3 cycles (normal, heavy and pots-n-pans).
If the water temperature reaches 140ºF or the thermostat closes. The heater
is turned “off”. Time continues to elapse and all other output states remain the
same until the prescribed interval time has elapsed.
“sani rinse” has been selected, the target thermal hold temperature for the
“sani rinse” option must be satisfied and maintained. If this condition is not
satisfied (because the final rinse thermal hold default time elapsed or power to
the dishwasher was lost at any time during the remainder of the cycle that
follows due to a door opening or AC line failure) then the sani complete indicator will flash on and off at the end of the cycle. Opening the door or pressing
any key will turn the indicator off in either case.
Note 12: Motor Drain Phase Winding
This output is only “on” when the motor is starting in the wash mode. When
the control has determined that the motor has started, the wash phase winding will be turned “off”.
Note 2:
Pre-Wash Thermal Hold
This thermal hold is only executed during the heavy and pots-n-pans cycles.
The thermal hold setpoint is 140ºF or thermostat contact closure and the default time is 25 minutes.
Note 13: Motor Drain Phase Winding
This output is only “on” when the motor is starting in the drain mode. When the
control has determined that the motor has started. The drain phase winding
will be turned “off”.
Pressure switch contact closure at any time during this interval causes the
cycle to jump to interval 37. Immediately.
Note 3:
Pre-Rinse Sense Interval
Pressure switch contact closure at any time during this interval causes the
cycle to jump to interval 31. Immediately. For the normal cycle, the heater is
“off” during this interval. For the heavy and pots-n-pans cycles the heater is
“on” during this interval. The power scour option changes this interval to a
heated wash interval for the normal cycle. If the water temperature reaches
140ºF or the thermostat closes. The heater is turned “off”. Time continues to
elapse and all output states remain the same until the prescribed interval time
has elapsed.
Note 14: Diagnostic Sensor Input Test
The soil sense pressure switch input is active during this interval. Pressure
switch contact closure at any time during this interval causes the cycle to jump
to the next interval. Immediately.
Note 15: Diagnostic Thermal Hold
The default status for this thermal hold is “on”. The thermal hold set point is
140ºF or thermostat contact closure and the default time is 60 minutes. After
60 minutes, the thermal hold is terminated and normal cycle timing resumes.
The diagnostic test cycle advance function can also be used to terminate this
thermal hold.
Note 4:
Pre-Rinse Thermal Hold
This thermal hold is only executed during the heavy and pots-n-pans cycles
and only occurs if the pressure switch trips during the sense or thermal hold
intervals of the pre-wash the thermal hold setpoint is 140ºF or thermostat contact closure and the default time is 20 minutes. Pressure switch contact closure at any time during this interval causes the cycle to jump to interval 31.
Immediately.
Note 16: Cycle Complete
A clean indicator will be on at the end of this cycle. Opening the door or
pressing any key will turn the indicator off.
Note 17: Diagnostics Cycle -- Thermostat/Thermistor Indicator
The “clean” LED will turn on during the display test at the beginning of the
cycle (interval 11) and again at the conclusion of the cycle (interval 2) regardless of what it detects on the thermistor input. The “clean” LED will be on in
intervals 1 through 8 of the cycle whenever an “open” (resistance greater than
200K OHMS. +/- 50K OHMS) is detected on the thermistor input by the
control. Consequently, if a normally open operating thermostat were to be
installed on the thermistor input, the “clean” LED would be on throughout the
cycle until the thermostat tripped (e.g., during the thermal hold); With a thermistor installed, the clean LED would only be on in intervals 10 and 0. Because the thermistor always has a resistance of between 50 K-OHMS and 8
K-OHMS under normal operating conditions.
Note 5:
Main Wash Thermal Hold
This thermal hold is automatic for the pots-n-pans and heavy cycles (set point
= 140ºF). For the normal cycle. This thermal hold is invoked by selecting the
power scour or high temp wash options (Set Point = 140ºF) or as a result of
the pressure switch tripping during the pre-wash (Set Point = 130ºF). For the
low energy wash and quick wash cycles. This thermal hold is invoked by selecting the high temp wash option (Set Point = 140ºF). In all cases, the default
time for this thermal hold is 20 minutes
Note 6:
Main Wash Recirculation Interval
The power scour option increases the length of this interval to 10:00 for the
pots-n-pans and heavy cycles.
Options
Water Heat:
Forces a thermal hold to occur in the main wash regardless of soil level. The
set point for this thermal hold is 140ºF. This option is automatic with the potsn-pans and heavy cycles. It is not available on china wash or rinse only cycles.
Note 7:
Final Rinse Thermal Hold
This thermal hold is automatic for all cycles except the china wash and rinse
only cycles (Set Point = 140ºF). For the china wash cycle, this thermal hold
only occurs if the pressure switch trips during the pre-rinse (Set Point = 130ºF).
In all cases the default time is 25 minutes.
Sani Rinse:
Raises the setpoint temperature of the thermal hold in the final rinse to approximately 65ºC/150ºF. This option is not available with china wash, quick
wash & rinse only cycles. This option is only possible on models that use a
thermistor.
If the sani rinse option is selected, then the set point for this thermal hold
becomes 150ºF and the default time changes is 25 minutes.
Note 8:
Air Dry
The default status for the dry period is heat dry “on”. Selecting the “air dry”
option causes the heater to be turned “off” during this interval.
Air Dry:
Opens the circuit to the heater element during the dry period of the cycle. This
option is not available on quick wash or rinse only cycles (which have no dry
period).
Note 9:
China Dry Interval
When the china wash cycle is selected, the heater will be turned off during this
interval.
Power Scour:
Inserts additional heated wash time into the pots-n-pans, heavy and normal
cycle pre-wash sequence (interval 39 becomes a 16 minute, thermostatically
controlled, heated wash). Turns the heater on in interval 33 of the normal
cycle pre-rinse, invokes a thermal hold in the main wash of the normal cycle
and extends interval 23 to 10 minutes in the pots-n-pans and heavy cycles.
This option is not available on low energy, china wash, quick wash or rinse
only cycles.
Note 10: Option LED’s
When a valid option is active, then the LED for the option will be “on”.
Note 11: Sani Complete LED
When the “sani rinse” option has been selected and completed. A “sani complete” indicator is illuminated at the end of the cycle. During a cycle in which
19
DIAGNOSTICS AND SALES DEMO TIMING CHART
INTERVAL
11
10
9
8
7
6
5
4
3
DELAY 2 HR
DELAY 4 HR
DELAY 6 HR
WASHING LED
ADD-A-DISH LED
WATER HEATING LED
NOTE 4
SENSING LED
NOTE 3
RINSING LED
DRYING LED
CLEAN LED
NOTE 5
CONTROL LOCKED LED
SANI COMPLETE LED
2
1
S
T
A
N
D
B
Y
POTS & PANS
HEAVY
NORMAL
LOW ENERGY
CHINA
QUICK WASH
RINSE ONLY
POWER SCOUR
HIGH TEMP WASH
SANI RINSE
AIR DRY
CANCEL
(17) (17) (17) (17) (17) (17) (17) (17)
6
MINUTES
SECONDS
0
S
T
A
N
D
B
Y
2
6
2
TH
2
5
3
1
55
6
6
VENT (disp., fill, soil enable)
MOTOR
WASH DIRECTION
NOTE 2
DRAIN DIRECTION
NOTE 2
FILL
DETERGENT DISPENSER
RINSE AGENT DISPENSER
HEATER
SOIL SENSE
NOTE 3
3
REFERENCE NOTES
4
WHIRLPOOL ‘98 DIAGNOSTICS
DIAGNOSTICS AND SALES DEMO TIMING CHART NOTES
1.
The diagnostics test cycle starts at interval 11 and concludes at interval
2. To initiate the diagnostics test cycle, press the following sequence of
keys within 10 seconds:
illuminated whenever the control detects a resistance of greater than
approximately 45 K-OHMS on the thermistor/ thermostat circuit. This
feature is intended to help determine whether a thermostat or thermistor
is installed. A thermostat with normally open contacts would trigger the
clean LED (until the thermostat is tripped). Under normal operation, the
resistance of the thermistor is always less than 45 K-OHMS and would
not trigger the clean LED.
High Temp Wash, Air Dry, High Temp Wash, Air Dry
or
Power Scour, Air Dry, Power Scour, Air Dry
The diagnostics test cycle may be manually advanced to the next interval by pressing the pots & pans key. To exit diagnostics, press cancel.
2.
The sales demo cycle consists of a single 6-minute wash interval which
starts at interval 1 and concludes at interval 0. To initiate the sales
demo cycle, press the following sequence of keys within 10 seconds:
High Temp Wash, Air Dry, High Temp Wash, Air Dry, High Temp Wash
or
Power Scour, Air Dry, Power Scour, Air Dry, Power Scour
3.
The wash and drain auxiliary windings are only “on” when the motor is
being started. When the control has determined that the motor has been
started satisfactorily, the auxiliary winding will be turned “off”.
8.
Entering the key sequence high temp wash (or power scour), air dry,
high temp wash (or power scour), air dry, after a cycle has started, will
enable the pots-n-pans key rapid advance feature. This will allow service to rapidly step to any interval of the currently running cycle.
Other Control Features:
The diagnostics test cycle executes a soil sensing interval at interval 9
to test the soil sensing circuit. The sensing LED is illuminated through
out this sense interval.
Cancel/Drain:
Terminates current active cycle and clears cycle selections. Executes 2-minute
drain upon first selection if water is likely to be left in sump. Subsequent
selections toggle between 2-minute drains and going to standby.
If the soil sensing pressure switch is tripped at any time during this sense
interval, the control will immediately terminate the sense interval and
proceed with the remainder of the diagnostics cycle.
Control Lock:
The control lock LED is illuminated and all keys of the keyboard are disabled
whenever the control lock feature is invoked by the customer. The control
lock feature (and LED) can be turned on or off by the customer at any time by
holding down the air dry option key for 4 seconds.
If the time limit for this sense interval elapses without detecting soil, the
control simply proceeds with the remainder of the diagnostics cycle.
4.
7.
The diagnostics cycle suspends cycle timing and executes a thermal
hold at interval 7. The thermal hold interval is terminated and cycle
timing resumes when the water is heated to the desired set point temperature (60ºC/140ºF). The maximum default time limit elapses (1 hour),
or the cycle is manually advanced to the next interval by pressing the
pots & pans key. The water heating LED is illuminated during the thermal hold.
Delay Start:
Allows the customer to delay the start of a cycle by up to 6 hours. Each press
of the delay key increases the delay time selection by two hours. The selected
delay period will begin clocking down upon selecting the cycle key. The cycle
selected will begin automatically upon completing the delay period.
5.
The clean LED is illuminated at the end of both the diagnostics test cycle
and the sales demo cycle. The clean LED can be extinguished by opening the door or pressing any key.
6.
During intervals 9 through 3 of the diagnostics cycle, the clean LED is
Stuck Key:
If the control detects that a key is stuck in the depressed position, dishwasher
operation will be suspended and the control will flash the LED associated with
that key until the condition is corrected. If a key without an LED is stuck or
multiple keys are stuck, the control will flash the lock-out LED.
Error Messages:
20
Strip Circuits (DU920PFG, DP920PFG, GU940SCG, GU960DCG, GU980SCG)
1.Fill
2.
Water Heat
3.
Wash
4.
Drain
5.
Heat Dry
21
INSTALLING CUSTOM PANEL ACCESSORY KIT
Custom Color Panels:
Black
P/N 675775
White
P/N 675776
Almond P/N 675777
Installation Instructions
In many instances, customers want to integrate the undercounter dishwasher appearance with overall
kitchen design by installing panels of wood matching that used in the cabinets. After the two panels an upper panel and a lower panel - are cut and finished as described below, use the materials in the
Dishwasher Custom Panel Accessory Kit to install them by following the installation instructions.
Custom Panel Dimensions
Removing Access and Door
Panels
NOTE: A ¼” thickness (actual 7/32”) can be used
for wood panels. If using thicker material, edges
must be routed to 7/32” as shown in box below.
1. Loosen but do not remove the two (2) toe
panel screws below the access panel. Remove and set aside the two (2) screws above
the access panel. (Fig. 4-1)
2. Remove the access panel assembly by sliding it upward to clear the loosened screws.
This access panel will be replaced by new a
new custom panel assembly. (Fig. 4-1)
Upper
panel
45 ø
Min.
45 ø
Lower
Min.
panel
3. Remove the two (2) screws from the bottom
of the outer door panel. (Fig. 4-1)
18-21/32"
7/32"
Max.
22-13/16"
1" Min.
(Fig. 4-1)
Required on
top and bottom
edges
4-7/16"
7/32" Max.
23-5/16"
1/4"
Min.
CUTTING NOTES:
1/4"
Min.
1.Custom panel for the door cannot exceed 8 lbs. weight.
2.The upper and lower panels are not the same width.
3.Match wood grain direction with that of adjacent cabinets.
4.Sand panel edges to provide smooth finish.
5.IMPORTANT: Use moisture resistant sealer on both sides
and all edges of the panels to protect from humidity. Dish
washer is subject to humidity.
22
4. Pull the bottom of the outer door panel outward and slide it down approximately ¼” to
½”. The panel will then be free for removal.
(Fig. 4-1, inset) Set the door panel aside; it
will be replaced with a new custom panel.
5. Remove the existing door insulation and discard.
Installing Custom Panels
1. Slip the top edge of the mounting strip up
under the tabs at the bottom of the door
frame so that the strip rests on the lower
frame flange. Make sure the strip seats as
shown in Figure 4-2. Protruding screws
should align with the notches.
2. Using the end of a flat bladed screwdriver,
push in on the three (3) tabs to lock the
mounting strip into place.
(Fig. 4-3)
4. Tip the custom door panel as shown in Figure 4-4, and insert the top edge into the rear
channel at the bottom of the control panel.
(Fig. 4-2)
(Fig. 4-4)
3. Install the J-strips by removing the protective
strip from the adhesive backing and carefully
positioning the J-strips over the left and right
door frames. (Fig. 4-3) Peel off the protective film from the outside of the J-strips after
installing.
5. Straighten the panel and rest the lower edge
on top of the mounting strip. Secure the bottom edge of the custom panel by snapping
the retainer trim strip into the slot in the mounting strip. (Fig. 4-6)
23
11. Reinstall the two (2) access panel screws removed earlier to secure the access panel to
the dishwasher. Tighten the right screw first,
then the left.
IMPORTANT
Be sure the door panel is inserted
into the rear channel. (Fig. 4-5)
Access Panel
Extension
(Fig. 4-5)
Access Panel
(Fig. 4-7)
Insulation
(Fig. 4-6)
Retainer
Trim Strip
(Fig. 4-8)
6. Place the access panel front side down. Install the metal access panel extension into the
slot it the access panel by pushing down firmly
until the extension snaps into place. (Fig. 4-7)
7. Remove the adhesive backing from the access panel insulation and press the insulation firmly into place. (Fig. 4-8)
8. Set the access panel upright. Slide the custom panel down into the bottom and side slots.
(Fig. 4-9)
(Fig. 4-9)
9. Secure the custom panel by inserting tabs on
the panel retainer into the notches along the
top back surface of the access panel. Press
firmly on the forward edge of the retainer to
snap it into place. (Fig. 4-10)
10. (Refer to Fig. 4-1 on page 71) Install the access panel assembly to the dishwasher by
aligning the slots in the back flange of the
extension over the two (2) screw heads protruding from the toe panel. Slide the access
panel downward and tighten the screws.
Access Panel
Retainer
(Fig. 4-10)
24
Installing Heavy Duty Door Springs
Standard door springs may need to be replaced by heavy duty springs designed to compensate for
the increased weight of the door resulting from the installation of custom panels. Perform the following
tests to determine whether the heavy duty springs need to be installed.
Heavy Duty Door Spring Kit:
Kit contains two (2) heavy duty door springs and instruction sheet.
Kit P/N 3379643
Door Operation Test:
• Springs should have enough tension to assist in closing the heavier door.
• Door should open evenly, without excessive speed which would cause it to drop abruptly.
• Door should remain fully open without closing
by itself.
1. If these operation tests are failed and the dish
washer is already installed under the counter,
remove the unit from its installed position.
Door Hinge
Bracket
2. Move the lower hook on each of the standard
door springs to the farthest adjustment slot to
increase spring tension. Repeat the Door Operation Tests. If the operation tests again fail,
the heavy duty springs supplied must be used.
3. Close and lock the dishwasher door. Remove
a spring from one side by releasing the lower
hook from the adjustment slot first, then disengaging the upper hook from the door hinge
bracket. (Fig. 4-11)
Spring
Lower End
Adjustment
Slots
Fig. 4-11
4. Install a heavy duty spring. Insert the smaller hook through the door hinge bracket first, then
engage the larger hook in the first notch of the second group of adjustment slots. (Fig. 4-11)
5. Repeat steps 3 and 4 to replace the spring on the opposite side of the door.
6. Open and close the door several times. The door should open and close easily. If the door closes
too quickly, decrease the spring tension by moving the lower hook of each spring one (1) notch
toward the back of the dishwasher. Springs should be in the same position on the left and right
sides. Perform the Door Operation Tests again. Continue to adjust the door spring tension as
necessary until the Door Operation Tests confirm proper spring adjustment.
7. Install the dishwasher in the final installed position by following the installation instructions provided with the unit.
25
INSTALLING THE FLOOR MOUNTING KIT
Fig. 4-12
KIT CONTENTS (P/N 4378968):
2 P/N 9743463 Brackets (Fig. 4-12)
1 P/N 4378974 Instruction Sheet
INSTALLATION INSTRUCTIONS
1. Loosen the two (2) screws below the access panel
and remove the two (2) screws above the access
panel. (Fig. 4-13)
Fig. 4-13
2. Carefully slide the access panel upward and off the
two (2) screws below the access panel.
3. Remove the two (2) lower screws securing the toe panel to remove the toe panel from the dish
washer.
4. Position the dishwasher in its final installed position. Refer to the dishwasher installation instructions for the proper installed position.
Floor
Bracket
5. Place the floor mounting brackets
so the top of the bracket hooks over
the top of the dishwasher side brace
towards the back of the unit. (Fig. 4-14)
6. Mark the location of the mounting holes
on the floor.
Fig. 4-14
7. Remove the dishwasher and drill two (2) holes,
on each side of the dishwasher location.
8. Position the dishwasher in its final installed position and install the floor mounting brackets and
secure them in place with screws.
NOTE
The size of the holes drilled in the floor will depend on the size
of the hardware (screws) being used for the installation.
9. Reinstall the dishwasher by following the installation instructions provided with the unit.
10. Install the toe panel and the access panel by reversing steps 1 through 3.
26
WHIRLPOOL
Dishwasher Warranty
LENGTH OR WARRANTY WHIRLPOOL WILL PAY FOR
FULL ONE-YEAR
WARRANTY
FROM DATE OF
PURCHASE
FSP™ replacement parts and repair labor to current defects
in materials or workmanship. Service must be provided by
an authorized Whirlpool service company.
LIMITED ONE-YEAR
WARRANTY
SECOND YEAR
FROM DATE OF
PURCHASE
FSP™ replacement parts for any part of the POWER CLEAN ® filter
module washing system if defective in materials or workmanship.
These parts are shown on page 29.
LIMITED FOUR-YEAR
WARRANTY
SECOND THROUGH
FIFTH YEAR FROM
DATE OF PURCHASE
FSP™ replacement parts for Electronic Control system if defective
in materials or workmanship.
FULL TWENTY-YEAR
WARRANTY
FROM DATE OF
PURCHASE
FSP™ replacement parts and repair labor for the DURAPERM ®
tub and/or inner door should they fail to contain water due to defective materials or workmanship. Service must be provided by an
authorized Whirlpool service company.
For models with dishracks that are oyster-colored, FSP™ replacement parts for the top and/or bottom dishracks if they rust due to
defective materials or workmanship.
WHIRLPOOL WILL NOT PAY FOR
A. Service calls to:
1. Correct the installation of the dishwasher.
2. Instruct you how to use the dishwasher.
3. Replace house fuses or correct house wiring or plumbing.
B. Repairs when dishwasher is used in other than normal, single-family household use.
C. Pickup and delivery. This product is designed to be repaired in the home.
D. Damage to dishwasher caused by accident, misuse, fire, flood, acts of God or use of
products not approved by Whirlpool.
E. Any labor costs during limited warranty.
F. Repairs to parts or systems resulting from unauthorized modifications made to the appliance.
G. In Canada, travel or transportation expenses for customers who reside in remote areas.
WHIRLPOOL CORPORATION AND INGLIS LIMITED SHALL NOT BE LIABLE UNDER
THIS WARRANTY FOR INCIDENTAL OR CONSEQUENTIAL DAMAGES.
Some states and provinces do not allow the exclusion or limitation of incidental or consequential damages, so this exclusion or limitation may not apply to you. This warranty gives
you specific legal rights, and you may also have other rights which vary from state to state
or province to province.
Outside the United States and Canada, a different warranty may apply. For details,
please contact your authorized Whirlpool dealer.
In you need service, first see the “Troubleshooting” section of this book. After checking
“Troubleshooting,” additional help is available by calling our Consumer Assistance Center
telephone number, 1-800-253-1301, from anywhere in the U.S.A. In Canada, you may call
your Inglis Limited Appliance Service Branch.
27
28
SERIAL PLATE LOCATOR
SERIAL/MODEL NUMBER PLATE
SERIAL NUMBER DESIGNATOR
SERIAL NUMBER
F
G
18
70352
MANUFACTURING SITE
F = Findlay, OH
YEAR OF MANUFACTURE
G = 1997
H = 1998
WEEK OF MANUFACTURE
18 = 18th Week
PRODUCT SEQUENCE NUMBER
MODEL NUMBER DESIGNATOR
MANUFACTURING NUMBER
D
U
9
MARKETING CHANNEL (if present)
PRODUCT GROUP
D = Dishwasher
G = Gold Line Dishwasher
PRODUCT IDENTIFICATION
P = Portable
U = Undercounter
FEATURES
4 = Advertising Model
8 = Soil Settler
9 = Power Clean
FEATURES
00 = Rocker Switch (Soil Settler) or
5 Push Button (Power Clean)
20 = 7 Push Button
40 = 4 Push Button (Soil Settler) or
9 Push Button (Power Clean)
60 = 10 Push Button
80 = 11 Push Button
FEATURES
DW = Durawash/Soil Settler
PF = Power Filter/Tower Feed
SC = Power Filter/Internal Feed
YEAR OF INTRODUCTION
G = 1998
COLOR CODE
ENGINEERING CHANGE (Numeric)
29
20
PF
G
N
0
CONTACT INFORMATION
For Product Specifications and Warranty Information Sources:
1-800-874-4698
For Technical Assistance:
1-800-253-2870
For Service Manuals and other Service Literature:
1-800-851-4605
For Service Replacement Parts:
1-800-259-7278
For Safety Related Information:
1-800-541-5746
30
V
CORPORATION
VI