Viking DFUD040, DFUD142, DFUD140, DFUD042 User Manual

VIKING RANGE CORPORATION, P. O. DRAWER 956, GREENWOOD, MS.38930 USA

Table of Contents

Index---------------------------------------------------------------------------------------------- 2
DFUD Serial Rating Plate--------------------------------------------------------------------- 3
DFUD 042/142 Control Panel Graphics----------------------------------------------------- 3
DFUD 040/140 Control Panel Graphics----------------------------------------------------- 4
DFUD 040/140 Wash Cycle Options-------------------------------------------------------- 5
DFUD 040/140 Cycle Data------------------------------------------------------------------- 6
DFUD 042/142 Wash Cycle Options-------------------------------------------------------- 7
DFUD 042/142 Cycle Data-------------------------------------------------------------------- 8
INSTALLATION
Water Supply--------------------------------------------------------------------------- 9
Electrical Connections---------------------------------------------------------------- 9
Drain Options--------------------------------------------------------------------------- 10
Toe Kick/Guard Plate------------------------------------------------------------------ 11
DFUD 040 Fault Tracing----------------------------------------------------------------------- 12
DFUD 140 Fault Tracing----------------------------------------------------------------------- 13
DFUD 140 Indication Lamps------------------------------------------------------------------- 14
DFUD 041 Program Sequence------------------------------------------------------------------ 15
DFUD 042/142 Fault Tracing----------------------------------------------------------------17/18
Poor Dishwashing Results--------------------------------------------------------------------19/24
Troubleshooting Guide------------------------------------------------------------------------25/27
DFUD 140 Cycle Sequence Chart------------------------------------------------------------- 28
DFUD 041 Cycle Sequence Chart------------------------------------------------------------- 29
DFUD 140 Wiring Diagram-------------------------------------------------------------------- 30
DFUD 042/142 Wiring Diagram--------------------------------------------------------------- 31
Component Resistance Checks----------------------------------------------------------------- 32

2

The serial rating plate is located on the right hand side of the inner part of the door.
Serial numbers are located in the lower right corner of the rating plate and give you the
year and week of manufacture. Use complete serial number when referring for service.

The buttons are on the top side of the control unit. The unit has six set programs and is
available in two models, with three or five options.

3

DISHWASHER FEATURES

CONTROL PANELS

4

WASH / CYCLE OPTIONS DFUD040 – DFUD140 CHANGING A PROGRAM

AFTER THE UNIT HAS STARTED
The dishwasher is programmed to stop operating if the door is opened during a cycle. If
you want to change a program or option after starting the machine, open the door slightly
to let the spray arms stop rotating and avoid getting sprayed with water. Press and hold
START for three (3) seconds to cancel the current selection then press the touch pad(s)
for your desired selection. Press Start again and close the door. The drain pump will run
to remove any dirty water from the dishwasher before starting the newly selected cycle.
Check to make sure there is still detergent in the detergent dispenser.

WHEN THE WASH IS FINISHED:

The indicator lights will come on for the last wash program and options that you used.
(NOTE: The unit will not retain the Rinse or China program; it will revert to the Normal
or Pots wash program.)

5

A. Using the lower water temperature setting.
B. Using the higher water temperature setting.

NOTE:

1. Does not include time for dry/heated dry

Econo option available for Pots, Normal, and China cycles on
DFUD140 only.

• Reduces temperature of main wash to 120º F (50º C)

• Extends the duration of the wash cycle by 15 minutes.

2. Fan assists drying process even when Heat Dry is not selected, except
on China cycle.

6

DFUD042 / DFUD142

CHANGING A PROGRAM AFTER THE UNIT HAS STARTED

The dishwasher is programmed to stop operating if the door is opened during a cycle. If
you want to change a program or option after starting the machine, open the door slightly
to let the spray arms stop rotating and avoid getting sprayed with water. Press and hold
START for three (3) seconds to cancel the current selection then press the touch pad(s)
for your desired selection. Press Start again and close the door. The drain pump will run
to remove any dirty water from the dishwasher before starting the newly selected cycle.
Check to make sure there is still detergent in the detergent dispenser.

WHEN THE WASH IS FINISHED:

The indicator lights will come on for the last wash program and options that you used.
(NOTE: The unit will not retain the Rinse/Hold or Quick program.)

7

A. Using the lower water temperature setting.
B. Using the higher water temperature setting.
NOTE: Includes time for dry

8

INSTALLATION

WATER SUPPLY: Water

pressure for the water supply
should be minimum 18 to 176 psi.
The water inlet valve is on the
right rear of the machine.

The dishwasher should preferably
be connected to a hot water supply
(2). If cold water supply is used,
the washing times will be longer.
(See Cycle Data page # )

It’s important that the water supply line and shut-off valve have a sufficient flow volume,
at least 3 gallons (12 liters) per minute must be able to pass through the line.

ELECTRICAL CONNECTIONS:

The dishwasher comes with a 6’
(1.8cm) electrical cord for 110-120
volts, 15/20 supply. This cord
should be plugged into the 110-120
volt outlet under the sink. If the cord
is not long enough or if a hard wire
installation is needed, see illustration
below.

9

DRAIN: A drain hose is provided with
the dishwasher which is connected to the
back of the unit to form a high loop.
The access hole for the drain line should
be at a minimum of 20” from the flood.
If the hose provided is not long enough,
extend it with a 7/8” copper tube. Do
not use any fittings anywhere in the
drain line that are less than 7/8”. If the
drain line is going to be connected to a
waste disposer, be sure to remove the
knock out pr plug from the fitting on the
disposer before connecting drain line. The dishwasher drain hose has a factory installed
check valve. Do not add an additional check valve.

Different ways to connect the drain line: (A) Typical drain connecting to sink plumbing
before trap (high loop drain). (B) Connection to an air gap, then to the trap. (C)
Connection to a waste disposer with air gap.

CAUTION: Failure to provide either the proper drain connection height above floor
level or a 20” high loop will result in improper draining of the dishwasher, which will
cause damage to the dishwasher.

NOTE: The drainage hose can be extended to a maximum length of 10 feet. Joints and
jointed tubes, if any must have an Inside Diameter (ID) of a least 7/8”. No part of the
drain hose must have a position higher then 35” above the floor. The hose must not be
drawn straight to a floor well or its equivalent. The hose might then function as a siphon­emptying the dishwasher.

10

REMOVING THE TOE
KICK BRACKETS AND
GUARD PLATE:
(This may only be
necessary if a hardware
installation kit was used.)

To remove the toe kick
brackets, pull the gray
tabs towards the middle
of the dishwasher. Then,
pull straight out on the
brackets.

There are six screws that
hold the guard plate in
place, two on the
upper/underneath side
and four on the front. To
remove the guard plate,
remove the six screws
holding the guard plate.
Grip the bottom of the guard late and pull it toward you to remove it. You can now
access the inlet valve and electrical connection.

The dishwasher comes with two white plastic slides for the
rear legs to protect the kitchen floor from being damaged when
you slide the unit into place. The slides snap onto the rear
legs.

Adjust the feet of the dishwasher with a ½” wrench to fit the
opening. The dishwasher may have a maximum inclination of 2
degrees without affecting its performance When the legs are
adjusted, tighten the locking nuts to the base pan.

11

DFUD040 Fault Testing:

1) Press the RINSE cycle button five
times within 15 seconds to enter the
component test mode.

2) Press the POTS cycle button to test
the inlet valve.

3) Press the NORMAL cycle button
once to test the detergent dispenser.
(Be sure to close the dispenser before
this test is preformed)

4) Press the NORMAL cycle again to
test the rinse aid dispenser.

5) Press the CHINA cycle button once
to test the heating element. (Use
caution when checking the heating
element as an injury may occur.)

6) Press the RINSE cycle once to test
the circulation pump. (Pump will
continue to operate until another
button is pressed.)

7) Press the HEAT DRY button once
to test the drain pump and vent fan
motor (Pump and fan will continue
to operate until another button is
pressed.)

To exit this test mode press

START/STOP once.

Inlet Time Adjustments:

1) Press CHINA cycle button five
times within 15 seconds to enter this
mode.

2) Press POTS to reset to the normal
default fill time.

3) Press NORMAL once to increase
fill time be fifteen seconds.

4) Press CHINA once to increase fill
time by thirty seconds.

5) Press RINSE once to increase fill
time by sixty seconds.

6) Press HEAT DRY once to increase
fill time by one hundred seconds.

Drain Time Adjustments:

1) Press POTS cycle button five times
within 15 seconds to enter this mode.

2) Press POTS once to decrease drain
time by five seconds.

3) Press NORMAL once to reset the
drain time to the normal default
mode.

4) Press CHINA once to increase the
drain time by ten seconds.

5) Press RINSE once to increase the
drain time by twenty seconds.

6) Press HEAT DRY once to increase
the drain time by sixty seconds.

Protected Start

1) Press NORMAL cycle button five
times within 15 seconds to enter this
mode.

2) Press CHINA once to obtain a three
second protected start.

3) Press NORMAL once to obtain the
normal default start.

12

Fault Tracing: Press TEMP (6) five times
and then:

1) Press Normal (2) to start Inlet Valve 2
(Not on all models)

2) Press China (3) to start Inlet Valve 1

3) Press Rinse (4) to start Combination

Dispenser

4) Press Econo (5) to start Heater

5) Press Temp (6) to start Circulation
Pump

6) Press Heat Dry (7) to start Drain Pump
(and Fan/Vax motor VUD040)

7) Press Delay (8) to start Fan/Vax Motor
(not DFUD040)

Press Start/ Stop to exit Fault Mode.

Drain Time Adjustments: Press China
(3) five times to Enter Reprogramming
Mode.

1) Press China (3) to get 20 seconds
Drainage Time

2) Press Rinse (4) to get 25 seconds
Drainage Time

3) Press Econo (5) to get 35 seconds
Drainage Time.

4) Press Temp (6) to get 45 seconds
Drainage Time.

5) Press Heat Dry (7) to get 85 seconds
Drainage Time.

Extra Rinse: You can get an extra rinse
in the programs, Pots, Normal and China
by doing this:

1) Press Normal (2) five times within 15
seconds. Then you get into the changing
program. The program will show how
many rinses the machine last gave, and
you get an extra rinse or press Rinse and
you get the normal number of rinses.

Inlet Time: Press Econ (5) five times
to Enter Reprogramming Mode.

1) Press China (3) to get normal Inlet
Time (Default)

2) Press Rinse (4) to get 25% increase
(75 sec.)

3) Press Econo (5) to get 50% increase
(90 sec.)

4) Press Temp (6) to get 100%
increase (120 sec.)

5) Press Heat Dry (7) to get 150%
increase (150 sec.)

6) Press Delay (8) to get 200% increase
(180 sec.)

Protected Start Program: Press Rinse
and Hold (5) five times and then:

1) Press Econo (5) once for Protected
Start (3 sec.)

2) Press Rinse (4) once for Normal
Start.

Extended Fan Cooling: You can cool
down the washing items under 30
minutes after heated drying by the fan
cooling. Press Econo (5) for extended
fan cooling.

1) Press Pots (1) five times within 15
seconds. Then you get into the
changing program.

2) Press Rinse (4) and you get 30
minutes extra fan cooling, or press

China and you get the normal fan
cooling.

Geographical location of switches on the

keyboard. (Some switches are not
displayed on some models.)

13

THE INDICATING LAMPS

DFUD140

14

DFUD040/140
Illustrated below is a normal program and the sequence in which the various
components are connected.

NORMAL WASH

Component

Comments

Outlet pump 25 seconds

RINSE/HOLD
Inlet valve 540 pulse* 0.7 gal
Circulation pump 30 sec High pressure upper arm**
Pause 1 sec
Circulation pump 240 sec High pressure lower arm**
Circulation pump 60 sec High pressure upper arm**
Circulation pump 240 sec High pressure lower arm
Circulation pump 60 sec High pressure upper arm
Outlet pump 2 sec SCS stage
Circulation pump 20 sec SCS stage, High pressure

upper arm

Outlet pump 25 sec

CLEANING STEP
Inlet valve 300 pulse* 0.4 gal
Circulation pump 30 sec High pressure upper arm
Pause 5 sec
Circulation pump 5 sec High pressure upper arm
Pause 5 sec
Circulation pump 5 sec High pressure upper arm
Outlet pump 25 sec

MAIN WASH
Inlet valve 540 pulse* 0.7 gal
Circulation pump 60 sec High pressure upper arm
Circulation pump, dispenser 3 sec High pressure upper arm
Circulation pump, element 90º F Enzym step
Circulation pump 180 sec
Circulation pump, element 130º F
Circulation pump 600 sec
Circulation pump 60 sec High pressure upper arm
Outlet pump 2 sec SCS stage
Circulation pump 20 sec SCS stage, high pressure
upper arm
Outlet pump 25 sec

15

CLEANING STEP
Inlet valve 140 pulse* 0.2 gal
Circulation pump 20 sec Low pressure lower arm
Outlet Pump 25 sec

FIRST RINSE
Inlet valve` 540 pulse* 0.7 gal
Circulation pump 240 sec
Circulation pump 60 sec High pressure upper arm
Outlet pump 2 sec SCS stage
Circulation pump 20 sec SCS stage
Outlet pump 25 sec

LAST RINSE
Inlet valve 540 pulse* 0.7 gal
Circulation pump 60 sec
Circulation pump, element 122º F
Circulation pump, dispenser 60 sec
Circulation pump 240 sec
Circulation pump 50 sec High pressure upper arm
Pause 60 sec Drip off
Outlet pump 25 sec

85 seconds between Circulation pump and fan start

DRYING
Fan 1200 sec

* Pulse = number of pulses from the flow sensor to obtain the given quantity of water

** Applicable to a machine with spray arm dividers. 1 stage (with an additional

circulation pump) where not spray arm divider status is indicated, sequential 30
seconds lower arm low pressure, 30 seconds lower arm high pressure, 30 seconds
upper arm low pressure, 30 seconds upper arm high pressure are intended.

16

Drying Selection:
(LED lights when long drying is selected).
Long and Normal drying (Quick wash;
Long and Short drying.)

Washing in both Baskets:
Both baskets washing (basic setting). The
machine’s upper and lower baskets are
loaded with items to be washed.

Washing in Upper Basket:

(DFUD142
only) Most of the process water is
directed by the spray arm divider to the
upper spray arm.

Washing in Lower Basket:

(DFUD142
only)
Most of the process water is directed by
the spray arm divider to the lower spray
arm.

Delayed Start:
Program start delayed by five hours.

Express: (DFUD142 only)
Reduces the main wash temperature and
lowers the rinse temperature in machines
with a fan and shortens the drying time.

Variant (Variable) Settings:
If the control unit is replaced, the
machine will automatically be in the
variant setting menu when the power
supply is switched on for the first time.

1) Press the program button S1
repeatedly until the desired model is
selected.
L1 lit: Model without Super rinse
option (S7)
L2 lit: Model without Super rinse
option (S7)

2) Confirm your choice by pressing Start
(S2). The machine senses the presence
of the turbidity and pressure sensors
and the spray arm divider. The
program returns to the main menu.

If you wish to access the variant settings
menu again: Activate the service menu,
press Start (S2) three times within five
seconds.

Water Hardness setting:
Activation of the setting menu:

1)

Turn off the main switch

2)

Wait for at least 5 seconds

3)

Keep the Start button depressed (S2)

4)

Turn on the main switch

5)

Release the Start button (S2)

6)

Select the desired water hardness with
the Program button (S1)

• Water Hardness (ºdH)
All LED’s 0 –5 Extinguished
L1 lit 6 – 8 L2 lit 9 – 14
L3 lit 15 – 19 L4 lit 20 – 29
L5 lit 30 – 44 L6 lit 45+
Confirm your choice be pressing Start
(S1). The program returns to the main
menu.

17

Child lock: (DFUD142 only)

Activation of setting menu:

1. Turn off the main switch

2. Wait for at least 5 seconds

3. Keep the Temperature and Drying
selection buttons depressed (S4 & S6)

4. Turn on the main switch

5. Release the Temperature and Drying
selection buttons (S4 & S6)

6. Select the status with the program button
(S1).
L1 extinguished, key extinguished:
Child lock deactivated.

L1 lit, key lit: Child lock activated.

7. Confirm your selection by pressing Start
(S2)

The program returns to the main menu.

To unlock the child lock temporarily, the
Temperature (S4) and Drying selection (S6)
buttons must be press simultaneously. The
machine can now be opened normally for
three minutes.

Total reset:

To reset the machine to its basic settings.

1. Turn off the main switch

2. Wait for at least 5 seconds

3. keep the Program button depressed (S1)

4. Turn on the main switch

5. Release the Program button (S1)

The machine now resets various settings,
although not the water hardness and intake
volume, and senses the presence of the
turbidity and pressure sensors and the spray
arm divider. The machine then reverts
automatically to the main menu.

SERVICE MENU:

1. Turn off main switch

2. Wait for at least 5 seconds

3. keep the Program and Start buttons
depressed (S1 & S2)

4. Turn on the main switch

5. Release the Program and Start buttons
(S1 & S2)

The most recent fault is indicated as L1-L6.
Press the Program button and index through
the following components.

1. Inlet valve

2. Detergent and detergent dispenser

3. Circulation pump

4. Heating element and circulation pump
(Max 165º F)

5. Fan

6. Drain pump

Keep the Program button depressed for three
seconds to adjust the water intake
Press the Program button and index through
the following:
L1-L6 extinguished; Normal water intake
volume.
L1 lit; Water intake volume is reduced by
10%.
L2 lit; Water intake volume is reduced by
5%.
L3 lit: Time-controlled water intake
L4 lit: Water intake volume is increased by
5%.
L5 lit: Water intake volume is increased by
10%.
L6 lit: Water intake volume is increased by
15%.
Confirm your choice by pressing Start (S2).
The program returns to the main menu.

18

POOR DISHWASHING RESULTS

Try the following remedies. Poor results may not always be caused be the dishwasher.
Read through the chart below before contacting your servicer.

PROBLEM POSSIBLE CAUSE SUGGESTED REMEDY

Spotting and filming Hard water Use the maximum recommended
amount (3 tablespoons of dish­ washer detergent.

• Wash and rinse load as usual

• Remove all metal items from

dishwasher.

• Do not add detergent.

• Pour two cups of vinegar into a

bowl and set it on the bottom
rack of the dishwasher.

• Run the dishes through an
entire wash program. If the
vinegar rinse doesn’t work,
repeat the above process
substituting ¼ cup citric
crystals (available at most drug
stores) for the vinegar.

Wiping with a damp cloth should
remove spots from metal items.
For sterling silver and silver plated
flatware, rub with a towel, or use a
good cream silver polish.

Filter system Check filter system to be sure it is

clean and properly installed

No rinse aid Does the rinse aid dispenser need

to be filled? (NOTE: Use only in
hard water areas.)

Too little water Check that the water valve is fully

opened. Make sure that the water
pressure is between 18 and 176psi .

Check the filter inlet valve.

Dishwasher detergent Use only the correct amount of

dishwasher detergent according to
the hardness of the water and the
wash program you have selected.
Do not use old or caked detergent.
Store the detergent in a dry place
and in a closed container.

19

PROBLEM POSSIBLE CAUSE SUGGESTED REMEDY

Change the dishwasher detergent if
the results is still unsatisfactory

Items not loaded properly Check that you loaded the items

according to the instructions in the
owners guide. Do not overload.
Make sure water can reach all
soiled surfaces.

Wash arms rotate poorly Check that both wash arms can
or standing still rotate freely and that items do not

obstruct the movement of the wash
arms. Lift the arms and make sure
that no grains of dirt, etc., retard the
rotation of the wash arms. If
necessary, clear the obstruction,
refit the arms and check that they
rotate freely.

Make sure that the holes in the

wash arms are not blocked be dirt.
If necessary, clear the holes with a
pointed object.

Strainer blocked Check the strainer. Clean if

necessary.

Excess foam in the Use only dishwasher detergent.
Machine

Flatware incorrectly loaded Pay particular attention to spoons

so they do not nest in each other
and prevent water penetration.

Marks and Aluminum utensils rubbing Be sure aluminum utensils,
discoloration especially light weight foil type pans, do not touch dishes. To

remove spots, use a nonabrasive
cleaner.

Small particles Wash arm of arms not Be sure a utensil or handle has not
deposited on items rotating freely prevented their turning.

Detergent Use only fresh detergent, store in a
Tightly closed container in a cool

dry place. Fill dispenser only when
ready to start the dishwasher. Use
the recommended amount of
detergent, especially with hard
water.

20

PROBLEM POSSIBLE CAUSE SUGGESTED REMEDY

Low water pressure Check that the water valve is fully

open. Make sure that the water
pressure is between 18 and 176psi.

Improper loading of dishes Load dishes to prevent water and

detergent from being trapped in or
between items. Water should
circulate freely.

Yellow or brown Iron or manganese in Temporary solution: Pour 1
marks water teaspoon to 1 tablespoon of citric

acid crystals in instead of the pre­wash detergent directly on the
inside of the door. Follow this per­wash with a full detergent wash.
Use the pots/pans or normal wash
cycle. Permanent solution: install
an iron removal system in the
water supply.

Copper with sterling silver Yellow film on sterling silver

results when washing copper items
in the same load. Silver polish
usually removes the stain.

Tea or coffee (tannic acid) Tea or coffee can stain cups.

Remove stains be hand, using a
solution of ½ cup bleach and 3
cups warm water. (Do not use on
sterling silver or silverplate.)

Discoloration of Allowing salty or acidic Rinse flatware that is to stand
stainless steel, food to remain on several hours before washing.
silverplate or flateware
sterling silver
Stainless steel contacting Do not put stainless steel and silver
silver. Flatware in the same silverware

basket compartment. Direct
contact between these metals can
cause permanent damage to silver.
Clean stained items with silver
polish. Do not use abrasives on
stainless steel or silver.

21

PROBLEM POSSIBLE CAUSE SUGGESTED REMEDY

Distortion of plastics Plastic item has low heat Plastics vary in their ability to
tolerance tolerate heat. Check washing

instructions for all plastic items to
be sure they are dishwasher safe.
If they are, place in upper rack
away from the heating element.

Marks on melamine Porous material Use a special cleaner for plastic.
and plastics DO NOT use bleach or scouring

powder on these materials.

Detergent left in Compartment cover The cover may not be opening be
detergent blocked opening because of improperly
compartment loaded items. Move dishes that

may be blocking it.

Old detergent If detergent is hard or caked in the

box, throw away. Use only fresh
detergent. Add detergent just
before starting the dishwasher.

Cloudy film on glass- Too much detergent, If vinegar or citric acid rinse doesn’t
ware-etching of glass especially in soft water remove film, the cloudiness is

“etching”. This is permanent. To
prevent etching, use the least
amount (one teaspoon) of
recommended dishwasher
detergent if you have soft water.

Use a good quality of dishwashing

detergent and rinse aid. Do Not
overload the machine. Water
should circulate freely to assure
adequate rinsing and draining.
Use drying without heat.

Dishes not dry Non-heat drying Be sure to select heated drying for

best results. Allow more drying
time when using non-heat drying.

No rinse aid Fill rinse aid dispenser. Rinse aid

helps dishes to dry faster. NOTE:
Use rinse aid with hard water only.

22

PROBLEM POSSIBLE CAUSE SUGGESTED REMEDY

Plastic items. Certain plastic materials are

difficult to dry. Plastics may need
towel drying.

Improper loading or Do not overload or nest items. Be
unloading sure all surfaces drain well. Load

items with concave bases so as
much water as possible can run off.
Unload the lower rack first. Water
from dishes in the upper rack may
be spilling onto the lower rack.

Dry cycle interrupted If the door is opened during the

heated dry cycle, the heating
element comes back on after the
door is closed. If the dishwasher
door is opened immediately after
the dry cycle is completed and then
shut again, the vent door is closed,
trapping warm humid air. It is best
then to leave door open slightly.

Chipping or breaking Improper loading Do not overload. Load between
of glassware prongs, not over them. Glasses

loaded over prongs are not
supported and may break. make
sure glassware is secure. Always
use upper rack for delicate items.
Use the light/china cycle.

Unusual noise Improper loading Utensils may not be secure or may

have dropped from the rack. Water
may cause utensils to rattle. Make
sure everything is securely placed
in dishwasher.

Dishwasher will not Door open Check that door is firmly closed.
Fill.
Controls Check that dishwasher is on.

Water feed line Check to see that the water feed

line is not crimped.

Water supply Be sure water is available and

turned on.

23

PROBLEM POSSIBLE CAUSE SUGGESTED REMEDY

Dishwasher will not
start. Check service notes

Dishwasher will not Check service notes.
drain

Water backs up in Food waste disposer Check disposer and trap at sink for
sink when dishwasher and trap. blockage or food particles.
drains.

Water left in bottom dishwasher cycle not Allow dishwasher to complete
near filters complete cycle

Some is normal. Water left in removable coarse

strainer is normal.

Display Type of Fault Action

Flashes Too much water Phone Service
In the dishwasher

Flashes Fault with water inlet Check that the water tap is
open.

Flashes Valve leakage Shut off the water tap and
Contact service

Flashes Blocked drain See “Possible Causes” in
Troubleshooting section.

To remove the fault indications from the display, turn off the main switch and then turn it
back on again.

24

TROUBLESHOOTING:

If there are problems with poor washing
results, you must observe the following
rules in the first instance:

• Use a suitable program, such as
Normal program 130º F / 140º F
for normally soiled items.

• If more heavily soiled items are
to be washed, e.g. saucepans or
gratin dishes, select a stronger
program, such as Heavy wash or
intensive wash.

• It is important to use a suitable
detergent, preferably one which
has produced good results in
tests.

• You should not buy a bulk pack,
because detergent is a perishable
product. The detergent dose
must also conform to the
recommendations on the pack.

Above all, avoid overdosing.

• The spray arms must not be
obstructed and they must rotate
at the correct speed (12 – 25
rpm). Make sure that the
machine takes in the correct
quantity of water, see the user
handbook.

MOST COMMON FAULTS:

If the dishwasher does not work, you
should first check whether this may be
due to a simple fault which the customer
himself can correct. Identify the fault
with the help of the following questions.

Machine will not start

• Are the fuses intact?

• Is the machine connected to the

mains?

• Is the door properly closed?

• Is the water tap open?

If you have answered “YES” to the
above questions, and if the machine
appears to be without a power supply,
you should first check that a power
supply is present as far as the main
switch and as far as the control unit.

If the machine indicates that something
is wrong, e.g. “Open door” even though
the door is closed, check the door
switch.

If the machine indicates “Overfilling”,
check the overfilling system (micro
switches, hoses, etc.

Water remains in the machine

• Is there a blockage in the drain
hose? Check the connection at
the union with the building’s
drains.

• Is there a kink in the drain hose?

• Are the filters blocked?

• Is the drain pump blocked?

• Is the gauge block on the left I

the sump next to the drain pump
incorrectly seated?

If you have answered “NO” to the
above questions, first check that the
drain pump has a power supply and that
it is working. The pump must be
replaced if it is faulty. If there is no
power supply to the pump, check the
output from the control unit. Replace
the control unit if it is defective.

The dishwasher is not clean

• Are the spray arms able to move
freely?

• Are the holes in the spray arms
free from dirt?

• Is the detergent being dispensed
correctly? Check that you are
dispensing according to the
hardness of the water.

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• Is the fine filter securely
attached?

• Are you using the correct wash
program?

• Is the machine correctly loaded?

If you have answered “YES” to the
above questions, you should check the
following:

• That the machine has the correct
quantity of water.

• That the spray arms are moving
in the right direction and rotating
at the correct speed (minimum 12
rpm).

• That the circulation pump is
working as intended.

• That the spray arm divider is
working as intended.

• That the machine empties the
water properly (no residual water
present before refilling).

Cloudiness or stains on washed items

• Is the rinse aid dispenser
correctly set?

• Is the temperature correctly set?

If you have answered “YES” to the
above questions, you should check the
following;

• Spray arms

• Circulation pump

• Element

• Combined dispenser

• Spray arm divider

Does the machine stop at the
beginning of the wash program?

• Is the water tap fully open?

• Is the filter at the screwed nipple

of the supply hose clean?

If you have answered “YES” to the
above questions, you should check the:

• Inlet valve

• Float

• Micro switch

FAULT CODES

In the fault codes below, “L” denotes
LED and “F” denotes fault code on the
display.

L1 / F1 Temperature stop fault

The temperature rise is less than 50º F in
five minutes. The program exits from
the heating stage and continues in the
process. Indication only in the service
menu.

CHECK:

• Element

• Thermister

• Water level

• Circulation pump

• Control unit

• Wiring

L2 / F2 Overfilling

Too much water in the machine
(pressure sensor) or float activated. If
the water has not been evacuated within
60 seconds, the program will be
interrupted (drain pump activated).

CHECK:

• Drain pump

• Blockage in the hoses

• Flow sensor

• Inlet valve

• Leakage

• Wiring

L3 / F3 Thermister fault

Interruption or >176º F. The program
exits from the heating stage and
continues in the process. Indication only
in the service menu.

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CHECK:

• Thermister

• Control unit

L4 / F4 Water intake fault
<80 pulses within 60 seconds or correct

number of pulses is not achieved with
255 seconds. Program interrupted.

CHECK;

• Water supply

• Flow sensor

• Inlet valve

• Wiring

L5 / F5 Valve leakage

>80 pulses detected when the inlet valve
is deactivated. Certain models attempt
to remedy the leak first. Any program in
progress is interrupted (drain pump
activated).

CHECK:

• Leakage through inlet valve

• Flow sensor

L6 / F6 Pressure sensor fault

Output signal > 4.8 V. The program
continues. Indication only in the service
menu.

CHECK:

• Pressure sensor

• Control unit

• Wiring

L1 + L2 / F7 Pumping out fault

Water not evacuated after 120 seconds
pumping out. Program interrupted.

CHECK:

• Drain pump

• Hoses

• Installation of drain hose

• Control unit

• Wiring

L1 + L3 / F8 Blocked filter

The pressure sensor senses excessively
low pressure during the final rinse.
Indication after end of program.

CHECK:

• Filter

• Sump (pressure chamber)

• Pressure sensor.

L1 + L4 / F9 Circulation fault

The pressure sensor senses excessively
low pressure (e.g. no water in the
machine) or excessively high pressure
(e.g. the circulation pump is defective).
The program exits from the heating stage
and continues in the process. Indication
only in the service menu.

CHECK:

• Circulation pump

• Filter

• Water level

• Pressure chamber

• Pressure sensor

L1 + L6 / Fb Spray arm divider fault

Position contact is continuously closed
or open. The program proceeds.
Indication only in service menu.

CHECK:

• Spray arm divider

• Function of gear box

• Contacts

• wiring

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DESIGNER SERIES DFUD 140

CYCLE SEQUENCE CHART

INLET TIME

Press 5 Five Times to Enter Program Mode.
Press 3 to get Normal Inlet Time (Default)
Press 4 to get 25% increase
Press 5 to get 50% increase
Press 6 to get 100% increase
Press 7 to get 150% increase
Press 8 to get 200% increase

DRAINAGE TIME

Press 3 Five Times to Enter Program Mode.
Press 3 to get 20 sec. Drain Time
Press 4 to get 25 sec. Drain Time (Default)
Press 5 to get 35 sec. Drain Time
Press 6 to get 45 sec. Drain Time
Press 7 to get 65 sec. Drain Time

Geographical location of switches on the
keyboard. (Some switches are not
displayed on some models.)

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30

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COMPONENTS AND MEASURED VALUES:

Indicated resistance values apply at room temperature
Values within ± 10% are regarded as normal.

Radio interference suppression filter 680K ohm
Heating element 1400W 120V 12 ohm
Heating element 1200W 120V 10 ohm
Thermistor 25K ohm
Combined dispenser 120V 0.3K ohm
Circulation pump 120V 22 ohm
Drain pump 120V 25 ohm
Spray arm divider 120V 60 Hz 2.6K ohm
Inlet valve single include flow sensor 120V 0.95K ohm
Inlet valve safety include flow sensor 120V 0.5K ohm
Halogen lamp =5 W/12V <10K ohm
Wax motor 1.1K ohm
Fan motor 120V 0.18K ohm

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