Electrolux 5000 Series User manual

Service Manual
Built-In Dishwasher
5995393914 (0309)

2Table of Contents
SAFESERVICINGPRACTICES .........................................................4
OPERATION.......................................................................................5
STATIC FILL................................................................................................................5
DYNAMICFILL............................................................................................................5
WASHSYSTEM ..........................................................................................................6
SOIL SENSING ...........................................................................................................6
MAIN WASH / TEMP ASSURE ...................................................................................7
TEMPERATURECONTROLS .....................................................................................7
RINSE PHASES..........................................................................................................8
CONDENSATEDRYING..............................................................................................8
CYCLE,SYSTEMS&COMPONENTS ...............................................9
DISHWASHERCONTROL ...........................................................................................9
Auto Wash ........................................................................................................................... 9
Heavy Wash......................................................................................................................... 9
Normal Wash....................................................................................................................... 9
Short Wash .......................................................................................................................... 9
Rinse Hold......................................................................................................................... 10
TESTS FOR THE CONTROL ....................................................................................10
Water/Service Test............................................................................................................ 10
Entering the Water/Service Test..................................................................................... 10
Water temperature Test Mode ........................................................................................ 11
Soil Sensor Test Mode .................................................................................................... 11
Electronic Control and Keypad Assembly.................................................................. 12
Control Board Plugs ....................................................................................................... 12
FILL SYSTEM ...........................................................................................................12
INLETWATERVALVE...............................................................................................12
To Check Inlet water valve.............................................................................................. 13
PRESSURESWITCHASSEMBLY............................................................................13
LOWWATERLEVELSWITCH..................................................................................13
Checking Low Water Level Switch ................................................................................ 14
HIGHWATER LEVELSWITCH ................................................................................. 14
Checking High Water Level Switch............................................................................... 15
WASHMOTOR ..........................................................................................................15
Checking the Wash Motor .............................................................................................. 16
Checking the Tachometer .............................................................................................. 16
HEATER ....................................................................................................................16
TEMPERATURE SENSORAND SOIL SENSOR...................................................... 17
Checking the Thermistor................................................................................................ 17
Checking the Soil Sensor............................................................................................... 18
DRAINPUMP ............................................................................................................18
Checking the Drain Pump .............................................................................................. 18

3
DISPENSER..............................................................................................................19
Checking the Dispenser ................................................................................................. 19
FANDRYUNIT ..........................................................................................................20
Checking Fan Dry Motor................................................................................................. 20
SERVICE&DISASSEMBLY .............................................................21
SAFETYPRECAUTIONS ..........................................................................................21
DOORPANEL ...........................................................................................................21
CONTROL .................................................................................................................22
DISPENSER..............................................................................................................22
LOWERACCESSPANEL .........................................................................................23
DOORLATCH/DOORSWITCH..................................................................................23
UPPER SPRAYARM.................................................................................................24
LOWERSPRAYARM ................................................................................................ 24
CENTER SPRAYARM ANDUPPER RACK MANIFOLD ..........................................25
MAINDELIVERY TUBE ............................................................................................25
UPPER SPRAYARM MOUNT................................................................................... 26
BOTTOMDOORSEAL .............................................................................................26
DOORSEAL..............................................................................................................26
WATERVALVE..........................................................................................................27
CABINETREMOVAL.................................................................................................27
DOORSPRING..........................................................................................................28
HINGE “C” ARM .......................................................................................................29
DOORSEALRETAINER...........................................................................................29
PRESSURESWITCHASSEMBLY............................................................................30
THERMISTOR/SOIL SENSOR..................................................................................30
INLINEHEATER........................................................................................................31
DRAINPUMP ............................................................................................................31
WASHMOTOR ..........................................................................................................32
CAPACITOR ..............................................................................................................33
BLOWERASSEMBLY...............................................................................................33
SUMP ........................................................................................................................34
SIDE VENT AND FILL HOSE ...................................................................................34
TROUBLESHOOTINGGUIDE.................................................. 35 - 36
PARTSBREAKDOWN.............................................................. 37 - 46
ELECTRICALDIAGRAM .................................................................47
Table of Contents

4SAFE SERVICING PRACTICES
To avoid personal injury and/or property damage, it is important that Safe
Servicing Practices be observed. The following are some limited examples of
safe practices:
1. DO NOT attempt a product repair if you have any doubts as to your ability to
complete it in a safe and satisfactory manner.
2. Before servicing or moving an appliance:
Remove the power cord from the electrical outlet, trip the circuit breaker to
the OFF position, or remove the fuse.
Turn off the gas supply.
Turn off the water supply.
3. Never interfere with the proper operation of any safety device.
4. USE ONLY REPLACEMENT PARTS CATALOGED FOR THIS
APPLIANCE. SUBSTITUTIONS MAY DEFEAT COMPLIANCE WITH
SAFETY STANDARDS SET FOR HOME APPLIANCES.
5. GROUNDING: The standard color coding for safety ground wires is
GREEN, or GREEN with YELLOW STRIPES. Ground leads are not to be
used as current carrying conductors. It is EXTREMELY important that the
service technician reestablish all safety grounds prior to completion of
service. Failure to do so will create a hazard.
6. Prior to returning the product to service, ensure that:
• All electrical connections are correct and secure
• All electrical leads are properly dressed and secured away from sharp
edges, high-temperature components, and moving parts
• All non-insulated electrical terminals, connectors, heaters, etc. are
adequately spaced away from all metal parts and panels
• All safety grounds (both internal and external) are correctly and securely
connected
• All panels are properly and securely reassembled
ATTENTION
This service manual is intended for use by persons having electrical and
mechnical training and a level of knowledge of these subjects generally
considered acceptable in the appliance repair trade. Electrolux Home
Products, Inc. cannot be responsible, nor assume any liability, for injury or
damage of any kind arising from the use of this manual.
© 2003 Electrolux Home Products, Inc.

5
OPERATION
In order to address service issues with the Electrolux 5000 Series dishwasher, the
primary elements of its operation are described below, as well as its physical
components.
STATIC FILL
The cycle begins by activating the drain pump, ensuring the sump is empty.
Operation then proceeds to the fill stage where the fill valve regulates inlet water to
1.08 GPM between 20 and 120 psi. A fill hose is attached to the fill valve and
clamped to the bottom of an air gap mounted on the left hand side of the tub. (The
air gap prevents the siphoning of wash water back into the water supply system
should the water pressure drop to less then atmospheric pressure.) The inlet
water enters the tub through the vent opening on the left sidewall of the tub. As the
fill continues, both the time of the fill and the amount of water in the sump are
monitored by the electronic control.
The pressure switch assembly mounted to the right side front frame has two
pressure switches; a low water level and a high water level switch. The contact in
the low water level switch is open until the water reaches the proper level in the
sump. At this point, the switch closes (neutral to P3-9), starting the Dynamic Fill.
DYNAMIC FILL
The closed circuit from the pressure switch starts
the wash motor. The wash motor gains speed at
the rate of 100 RPM/second until full speed is
attained. The water level inside the sump falls as
the wash motor gains speed. This opens the
circuit on the low level pressure switch, allowing
the water valve to introduce more water to the tub.
Once the wash motor reaches full speed, the inlet
water continues to fill until the low level pressure
switch is reactivated (neutral to P3-9). This
completes the fill phase of the cycle.
Figure 1
Pressure Switch Assembly
Low
water
level
switch
High
water
level
switch

6OPERATION
WASH SYSTEM
Once filling is complete, the dishwasher enters the pre-wash phase. The pre-
wash phase conditions the soil with water and detergent to prepare it for removal in
the main wash phase.
Once water enters the tub, the pump draws the
water into the sump through a primary filter at the
bottom of the tub to prevent food from circulating
through the wash system and redepositing on the
dishes. In the center of the primary filter is the
lower spray arm and drain filter assembly. The
drain cap, snapped into the drain cup, prevents
food particles from entering the drain section of the
sump.
As the wash water flows through the filters, soil
levels and water temperatures (see Soil Sensing
section, this page) are measured by the Soil
Sensor / Thermistor assembly. The wash motor
discharges the wash water through two ports,
feeding the lower, center, and upper spray arms.
The larger of the ports feeds water through a “Y”
hose to separate the lower and center spray arm wash water. The water flowing to
the center spray arm first passes through an inline water heater before entering the
delivery tube. The water flowing to the lower spray arm passes through the sump
on its way to the lower spray arm.
SOIL SENSING
Soil sensing is performed in all wash cycles except the Rinse only cycle.
Mounted on the right side of the sump, the soil sensor transmits light from a
transmitter to a receiver to measure the amount of soil in the water. This
information will be used by the control to determine the length of the cycle.
Once pre-wash loosens food on the dishes, the motor stops for 30 seconds.
This allows the wash water and food soils to settle for the soil sensor to
check the soil levels in the water.
Now that this reading is taken, the dishwasher drains the dirty water and fills
again for the pre-wash rinse. Once this rinse is complete, the wash motor
pauses again, a soil level measurement is again taken. The control uses
these readings to adjust the wash cycle to ensure a clean load of dishes.
Figure 2
“Y” hose
Sump
Inline Heater
Wash
motor
Figure 3
Thermistor Soil
Sensor

7
OPERATION
MAIN WASH / TEMPASSURE
After the final reading by the soil sensor, the unit drains before starting to fill for the
main wash. The tub fills, with the wash motor starting after the low level pressure
switch is activated. The detergent dispenser now opens,
introducing detergent into the wash cycle. The electronic
control checks the water temperature through the
thermistor, energizing the inline heater to maintain or heat
the wash water entering the second level spray arm.
The main wash temperature has been predetermined for
the wash cycle selected. At this point, depending on the
required temperature (Temp Assure), the electronic control
pauses the time remaining to allow the wash water to heat
to the desired setting. If Temp Assure is not reached, the
dishwasher pauses time between 0 and 10 minutes to allow
the temperature to increase during several periods of the
main wash. Once the main wash cycle is completed, the
dishwasher goes through the drain phase before filling for
the rinse phase of the cycle.
TEMPERATURE CONTROLS
Options allow the consumer the choice to control the temperature at which the
main wash operates. The main wash water can be heated to increase the
performance of the chosen wash cycle.
If the High Temp option is chosen, the required temperature (Temp Assure) during
the main wash is increased to 140°F. The control will pause the time remaining for
up to 10 minutes to allow the water to heat to this temperature. Whether or not the
water temperature reaches this in 10 minutes, the cycle continues without
indication that it reached or did not reach this temperature.
When the Sanitize option is chosen, the National Sanitation Foundation requires, in
the final rinse cycle, that 155°F. be reached and maintained for a certain amount of
time. During the final rinse, the control pauses the time remaining for up to 30
minutes to reach Temp Assure (155°F for Sanitize) before proceeding to the end of
the cycle. Should the cycle meet the requirements defined by the Sanitize option,
the Sanitize ring will remain lit following the completion of the cycle. The ring will not
light if Temp Assure is not met.
Figure 4
Inline heater

8OPERATION
RINSE PHASES
The first rinse phase following the pre-wash portion of a wash cycle. During this
rinse phase, the motor ramps up by 100RPM/second to full
speed (2800RPM). Once at full speed, however, the motor will
cycle between 1600RPM and 2800 RPM throughout the rest of
this rinse phase. This motor action aids in the removal of food
from the dishes so it can be filtered from the water.
The final rinse phase begins following the end of the main wash.
Rinse agent is added to the water during the final rinse. Rinse
agent speeds drying, removes water spots, and water streaks
from glassware.
If the Sanitize option has been chosen, the control will pause the
time remaining to allow the heater to increase the water
temperature to 155°F. This delay will last up to 30 minutes
before resuming the rest of the cycle. The Sanitize outer ring will
light following the wash only if 155°F is achieved.
CONDENSATE DRYING
This dishwasher is designed and equipped with a condensate drying system.
Steam is drawn from the tub by the condensate fan
and forced through the condensate duct. As it flows
through the condensate duct, the cool surface of the
baffles condense the steam into water allowing the
now cooler and drier air to exit into the tub through
the condensate vent. The condensate vent is also
the exit for the water from the condensate duct into
the tub to be drained.
This circulation starts before the unit has completed
draining and continues for the rest of the drying
phase of the wash cycle. The air intake and
condensate vent are shown in Figure 6.
The final operation of the wash cycle energizes the
fill valve long enough to allow the soil sensor to
recalibrate itself with fresh, clean water.
Figure 5
Blower
Fan
Air
Duct
Side Vent Air Return Figure 6
Intake

9
CYCLE, SYSTEMS & COMPONENTS
Knowledge of the dishwasher’s cycles and systems is necessary in diagnosing
any potential operational problems. Methods for diagnosing these problems, such
as taking resistance readings and testing for closed circuits are outlined in the
following section as well.
DISHWASHER CONTROL
All of the functions and operations of this dishwasher are dictated and monitored by
the electronic control. The control maintains the proper water temperature in the
wash and rinse cycles to ensure proper cleaning for the wash cycle selected. (This
temperature may not be the same for all cycles.) The control also monitors the soil
concentration in the water with the use of a turbidity sensor mounted in the sump.
Auto Wash
This cycle factors in the size of the load, the amount of soil on the dishes, and the
temperature of the water to create an appropriate cycle for each load. Auto wash
uses water temperature to determine the length of the wash cycle. Water
temperature is monitored to assess the rate at which the water temperature
decreases. A rapid decrease in temperature alerts the control to extend the wash
time. (Larger loads have higher rates of temperature decrease, therefore longer
wash cycles.)
As the water is assessed for temperature changes, it is also adjusted to maintain
proper temperature throughout the cycle. The control also checks the soil
concentration in the water to determine the number of rinses needed for cleaning.
Heavy Wash
This cycle is intended for heavy soil levels. The water temperatures for both wash
and rinse cycles are automatically selected. It includes a high temperature wash
and sanitize rinse. Soil sensing is used in this cycle.
NormalWash
This cycle is intended for normal soil level. All options (high temperature wash,
sanitize rinse, and delay start) are available at the user’s discretion. Soil sensing is
used in this cycle.
Short Wash
This cycle is intended for light soil levels. All options (high temperature wash,
sanitize rinse, and delay start) are available at the user’s discretion. Soil sensing is
used in this cycle.

10 CYCLE, SYSTEMS & COMPONENTS
DISHWASHER CONTROL (CONT.)
Rinse Hold
This cycle is intended for dishes that are to be washed later. It is a rinse-only
cycle; options and soil sensing are not available.
TESTS FOR THE CONTROL
Water/Service Test
The service test will check the electronic control’s ability to ran all functions of the
dishwasher. This test may be entered from an idle mode or the power failure
mode, however different pads are used to activate.
Entering the Water/Service Test
From Power Failure
While the control displays power failure or flashing lights, press and hold the Short
wash and the Rinse & Hold pads simultaneously for one second. The dishwasher
will start through the test cycle.
From Idle
With no cycle selected and the dishwasher sitting idle, press and hold the Hi-temp
and the Start pads simultaneously for one second. The dishwasher will start
through the test cycle.
The chart on the next page shows the complete Water/Service Test cycle. To
manually move to the next phase of the cycle press the Start pad. If at any time the
door is opened the test cycle will end and flashing lights will come on showing
power failure. The Sanitize LED will light at the end of test to check the LED. If the
rinse aid dispenser is empty, the display will read LO to indicate the contact in the
dispenser is closed.

11
CYCLE, SYSTEMS & COMPONENTS
Water Temperature Test Mode
This test is for testing the thermistor in the sump as well as the control.
Start a Normal wash cycle and allow the dishwasher to fill and wash for 2 minutes,
at which time, press the Start/ Cancel pad twice (2) which will stop the dishwasher
and send it to idle. With the dishwasher in idle, press and hold the Normal wash
and the Start/ Cancel pads simultaneously to start the test. The test will show a
two digit display for the temperature of the water (from 0°F to 99°F). If the water
temperature is over 99°F, a decimal point will be displayed to show 100°F, then the
added degrees over. This reading will be updated every three seconds until the
Start/ Cancel pad is depressed to stop the test.
Soil Sensor Test Mode
This tests the sensor for proper operation as well as the value that the
sensor is detecting.
To activate the test you must press and hold the Heavy and Start pads
simultaneously. When the test mode is activated, the digit display will show the
turbidity value of the sensor. This display will be a voltage reading in the decimal
value. To terminate this test press the start pad.
Step Description
Time
Water Valve
Wash Motor
Drain pump
Heater
Dispenser
Fan
Sensing LED
Drying LED
Sanitized LED
Dispenser Low
LED
Clean LED
1 Fill / Dispenser 59 1 0 0 0 0 0 1 0 0 0 0
2 Fill / Dispenser / Wash 21 * 1 0 0 1 0 1 0 0 0 0
3 Wash / Heat 45 0 1 0 1 0 0 1 0 0 0 0
4 Pause 0.6 0 0 0 0 0 0 1 0 0 0 0
5 Wash / Heat 75 0 1 0 1 0 0 0 0 0 0 0
6 Wash / Heat / Dispenser 80 0 1 0 1 1 0 0 0 0 0 0
7 Drain 90 0 0 1 0 0 0 0 0 0 0 0
8 Dry 90 0 0 0 1 0 1 0 1 0 0 0
Completion 460.6 1 0/1 1
* Dynamic fill - water valve is open until pressure switch is closed

12 CYCLE, SYSTEMS & COMPONENTS
Electronic Control and Keypad Assembly
The control on the dishwasher consists of the control board and the switch
assembly. The switch is installed into the top of the outer door panel, an elastomer
keypad, used to actuate the switch, is inserted into holes in the top of the outer
door panel. The keypad assembly is attached to the control board with a
connecting ribbon. The keypad is held in place by a spacer that is clipped to the
top of the mount holding the control board. The control is mounted to a carrier
panel that is attached to the outer door panel. It is covered with a mylar blanket.
Control Board Plugs
Throughout this section
references are made to the
plug and pin location on the
electronic control.Figure 7
shows a picture of the
electronic control pointing
out plug numbers as well as
pin and color of the wire in
each location.
FILL SYSTEM
Two major components in the fill system are the inlet water valve and the pressure
switch assembly.
INLET WATER VALVE
The inlet valve is an electrically controlled shut-off valve that is used to allow water
to enter the dishwasher. The valve has a flow restrictor to regulate the water flow to
1.08 GPM at between 20 and 120 psi into the tub. The inlet valve is wired to the
electronic control and is opened and closed by the control. The inlet water valve is
located on the front left frame leg just behind the lower front panel
Plug #1
#1 Black
#8 Gray
Plug #2
Black 1
Red 2
Purple 3
Brown 5
Orange 6
White 7
Figure 7
Plug #3
1 White
2 Brown
3Blue
4 Black
5 Yellow
6 Brown
7 Black
8 White
9 Orange
10 Blue
11 Red

13
CYCLE, SYSTEMS & COMPONENTS
To Check Inlet water valve
1. Disconnect dishwasher from power supply.
2. To access electrical connections to valve, remove lower
front panel.
3. Using ohmmeter, check between P3-5 (yellow wire) and
P3-8 (white wire). The resistance reading of the solenoid
coil should be 1126 ohms.
PRESSURE SWITCH ASSEMBLY
The pressure switch assembly consists
of a low water level switch and a high
water level switch with common bracket.
This assembly is mounted to the right
side frame behind the junction box.
LOW WATER LEVEL SWITCH
The low water level switch is used to maintain the water level in the sump for the fill
cycle. The switch has a hose connecting it to the sump. As the water level in the
sump rises, air in the hose is compressed and forced against the diaphragm in the
switch. This compressed air causes the contact in the switch to close. When the
switch closes the first time, it starts the wash motor.
Figure 8
Figure 9
High Pressure
Switch
Low Pressure
Switch

14 CYCLE, SYSTEMS & COMPONENTS
Checking Low Water Level Switch
1. Disconnect power to dishwasher.
2. Gain access to electronic control and check
between P3-9 (orange wire) and P3-8 (white
wire). This should be an open contact.
3. These wires are connected to center terminal
# 1 and terminal to the right of center # 3.
4. Add water to sump to close switch. (See
Figure 10)
HIGH WATER LEVEL SWITCH
The high water level switch is a back up, or
safety, for the low water level switch. The
high water level switch is placed in series
with the drain pump. If the low water level
switch fails to close, the drain pump starts
automatically. The high water level switch is
an open switch. It is connected to the sump
by a separate hose.
Check
between
these two
termials
High Water
Level
Low Water
Level
Check
between
these two
termials
Figure 11
Figure 10
Low Water Level Switch will close at this level.

15
CYCLE, SYSTEMS & COMPONENTS
HIGH WATER LEVEL SWITCH (CONT.)
Checking High Water Level Switch
•Checking continuity through the high water level switch is easier at the
control.
•Disconnect power to dishwasher.
•Gain access to electronic control and check for continuity between the L1
black wire and P3-6 (brown wire). This contact should be open.
•These wires are connected to center terminal # 1 and terminal to the right of
center # 3 on the switch.
•This contact will close when water inside the tub reaches the rails for the
lower wash rack.
WASH MOTOR
The wash motor, mounted to left side of the sump, and is connected to it by two
separate hoses. The permanent split capacitor motor operates on 120 VAC, 1.8
amp 60 Hz.
The motor speed varies as needed for different wash cycles. The speed varies by
changes made to the voltage sine wave, as power is applied to the motor. At full
speed the wash motor runs at approximately 2800 RPM.
The motor speed varies at the beginning of the wash cycle
as the tub fills with water. After the wash motor starts at 310
RPM, it increases speed at a rate of 100 RPM / second until
full speed is reached. The motor speed also varies during
Pulse Wash, where the motor speed is changed from 1600
RPM to 2800 RPM to aid in cleaning the filter, while reducing
noise.
The electronic control monitors the speed of the motor
through the tachometer mounted on the rear of the motor.
(See Figure 13) The tachometer is an AC generator, which
provides feedback information to the control for regulating
the motor speed. Wash Motor
Figure 12

16 CYCLE, SYSTEMS & COMPONENTS
WASH MOTOR (CONT.)
Checking the Wash Motor
·Disconnect dishwasher from power supply
·Due to the location of the motor disconnect plug,
resistance readings should be made at the control
- Remove outer door panel to gain access to the
control
- The run windings for the motor are connected
between P3-1 and P3-4
·The resistance should read 14 ohms
Checking the Tachometer
·Disconnect dishwasher from power supply.
·Due to the location of the motor disconnect plug,
resistance readings should be made at the control.
- Remove outer door panel to gain access to the control.
- The tachometer leads are between P3-10 and P3-11.
- The resistance should read 246 ohms.
HEATER
The heater in this dishwasher is inline between the
wash motor and the delivery tube. The 1200W
heater wraps around a stainless steel core tube.
The heater can only be energized, during a wash
cycle, while the wash pump is running after the low
level pressure switch has been activated. Water is
heated as it passes through the heater to the center
spray arm. This heater has internal thermal
protection.
While checking the heater, do not apply power to
it until the tub has filled with water and the
motor is operating!
Figure 13
Tachometer mounted on the rear of the
motor
In line Heater
Figure 14

17
CYCLE, SYSTEMS & COMPONENTS
TEMPERATURE SENSOR AND SOIL SENSOR
The electronic control reads information from two sensors to adjust the wash
cycle. The Thermistor and soil sensor are integrated into the same housing
mounted to the right side of the sump. Both sensors extend into the
outer section of the sump to perform independent tasks.
The electronic control uses the Thermistor to monitor the
temperature of the water in the dishwasher. The turbidity or soil
sensor is used to monitor soil levels during a wash cycle. A small
amount of DC power is sent to the soil sensor emitter mounted in
one of the posts of the sensor housing. This emitter turns DC power
into a small beam of light to be transmitted to a detector in the other
post. As this light passes from one post to another, the amount of
soil in the water partially blocks the light seen by the detector. The
detector changes this light back into DC voltage which returns to the
control for analysis.
The level of soil in the water can be determined by this returned
voltage. Based on this information, the control makes adjustments
to the remainder of the wash cycle.
Checking the Thermistor
Refer to Water Temperature Test Mode on page 11
to check the temperature of the thermistor.
Sensor mounted into sump
Thermistor
Figure 15
Sensor with seal
Thermistor
Turbidity
Sensor
Figure 16

18 CYCLE, SYSTEMS & COMPONENTS
Checking the Soil Sensor
·While in idle mode, simultaneously press and hold Heavy Wash and Start /
Cancel buttons.
- This activates the sensor value test.
- If a number does not display, continue with the test.
·Disconnect dishwasher from power supply.
·Check soil sensor circuit at control.
- A resistance reading should be taken between P2-1 black and P2-7 white
at the control for the emitter.
- A resistance reading should be taken between P2-2 red and P2-7 white at
the control for the detector.
DRAIN PUMP
This dishwasher contains an independent drain
pump. It is of a wet rotor design to prevent leaks.
The drain pump is mounted directly to the rear of
the sump. The pump cover can be removed for
cleaning. The discharge end of the pump has a
check valve to prevent water and odors from
entering the dishwasher from the house drain
system. The intake of the pump is connected to
the sump by a short connecting hose. The pump
is delivered as a complete assembly.
Checking the Drain Pump
·A service test can be performed to test all
functions of the dishwasher, including the
drain pump.
- The service test is covered in section
“Test for the Control”.
If the Drain Pump Does Not Operate
·Disconnect dishwasher from power supply.
·The location of the drain pump requires that you check the circuit at the
control.
- Check between P3-6 brown and P3-8 white.
·The resistance should read 26 ohms.
Check valve Mounting tab
Drain pump
Figure 17

19
CYCLE, SYSTEMS & COMPONENTS
DISPENSER
The dispenser consists of two dispensers in one
housing, controlled by the use of one wax motor
actuator. The first time the actuator is energized in the
cycle, detergent is dispensed. The second time the
actuator is energized, rinse agent is dispensed.
The rinse aid half of the dispenser can be adjusted to
meet the customer’s needs. This is done by removing
the cap from the dispenser and adjusting the arrow
inside to a higher number. The higher the number the
more agent that is dispensed during the rinse cycle. A
sensor inside the rinse aid reservoir triggers the control
to display “LO”when the level of rinse agent is low. The
“LO”display on the control will not affect the operation of the dishwasher.
Checking the Dispenser
·An operational check of the dispenser can be done
using the service test for the control.
- The service test is covered in section “Test for the
Control”.
If the dispenser does not open
·Disconnect dishwasher from power supply.
·Remove outer door panel.
- The wax motor normal resistance is 1665.
·Check rinse agent indicator switch.
- An empty dispenser will have a resistance reading
of 0 ohms.
- A dispenser with rinse agent will have an open
resistance reading.
Wax motor actuator Contacts for rinse aid
level switch
Figure 18
Arrow adjustment for rinse aid
Figure 19

20 CYCLE, SYSTEMS & COMPONENTS
FAN DRY UNIT
Dishes are dried with a fan driven condensate system. This system is made up of
(refer to Figures 20, 21):
1. Fan Dry Motor
2. Air Intake
3. Condensate Duct
4. Condensate Vent
As the dishwasher completes its final drain, the fan dry motor forces saturated air
across cool baffles in the condensate duct, resulting in the removal of moisture
from the air. The cooler, drier air and condensed water is returned to the tub
through the condensate vent. The drying process continues until moisture is
removed from the air left in the tub, thus allowing the hot dishes to completely dry.
Checking Fan Dry Motor
·Disconnect dishwasher from power supply.
·Fan dry motor can be checked at the control panel between P3-3 blue and
P3-8 white.
- Normal resistance is 2088 ohms.
Fan Dry motorAir intake
Figure 20
Condensate
Vent
Inlet water
connection
Figure 21
Condensate
Duct