Asco WM50 Service Manual

Service manual

Type: WM50

Replaces

New type old type Main differences Product info
WM33A WM33 Programmer no longer fitted, replaced by rotary switch

and electronic control card. E2 no longer fitted,
new programs. A

New panel graphic.

WM44A WM44 Programmer no longer fitted, replaced by rotary A

switch and electronic control card.
E2 no longer fitted, new programs.

New panel graphic.

WM50 NEW Electronic control with knob and 7-segment B

LED display. 11 programs.

WM55A WM55 New control card. New menu logic. C

New programs. Among other things, 1-24 hour delayed start.
New panel graphic. Shop program indicated on the display.

WM56 NEW Electronic control with buttons and display. D

8 programs. Shop program indicated on display.

WM66A WM66 See WM55A. C

Overview of new/modified types of

washing machines introduced to the

market in 2001

Product:

Date: 11.1.2002

Reference: N-Å Carlsson

Group: 21

Page: 1(10)

ASKO Cylinda’s range of washing machines was modified during the autumn of 2001. A brief
overview of the modifications which were carried out follows below.

Further information is given in the product data given below.

Front-loading
washing machine

Service manual

Type: WM50

New type of washing machine

WM50

Product:

Date: 11.1.2002

Reference: N-Å Carlsson

Group: 21

B

Page:2(10)

This service manual is intended as a supplement to the W600 series Service Manual.

Example of WM50 Panel

General

Mechanically the machine is based on the WM55 (W640/W650), with the exception of the panel and
control unit. For more information see the service manual for the W600-series.
The machine is available with different pushbutton options, thus the pushbuttons may vary from one
market to another. See also loops on the control card below.

Contents

• Example of panel •

• General

• Handling

• Display indications

• Options and settings

• Error messages

• Faultfinding

• Consumption values

• Test program

• Loops on control card

• Settings

• Programs

• Component and measured values

Front-loading
washing machine

Handling

1. Sort the wash

2. Press the main switch,

, open the door, , and place the wash in the machine.

3. Pour in the washing powder and also the rinsing aid if necessary.

4. Select program, adjust temperature, spin speed and option if necessary.
Settings appear on the display . Options appear as a lit LED alongside each button.

5. Close the door and start the program with the

- button.

T o interrupt a program hold down the

- button for 3 seconds.

6. At the end of the wash program open the door with

.

7. After the wash turn off the main switch

and close the wash door.

Display indications

The display shows Explanation

No program selected

One or two digits, followed by an h.
Delayed start has been selected and the program has star­ted. The display shows the number of hours left until the
program starts.

One digit, an H followed by two digits or only 1-2
digits, means that a program is running.
The display shows the remaining time in the program
in hours and minutes.

Appears when temperature is selected. The tempe­rature can be indicated either in degrees Celsius ( C)
or Fahrenheit (F).
CC and CF respectively mean that the machine is set
to the temperature of the incoming water.

To change the display see the section Washing tem­perature – Celsius or Fahrenheit in the instructions for
use.

Program ready. Remove the wash.

Can be displayed when selecting spin speed. Indi­cates No spin/No drain. The programme will then
be run without spins and will be completed with the
final rinse water still in the machine.

Can be displayed when selecting spin speed. Indi­cates No spin. The programme will then be run wit­hout spins.

When the Anti-crease option has been activated the
drum rotates a few times/min. for 2 hours after the
program has ended. In the mean time AC appears on
the display. You can end and open the door at ay time
by pressing the door opening button.

May appear instead of temperature when the setting
is not appropriate. For example temperature cannot
be selected for Rinse program.

Options and settings (not all options are provided on all machines):

Settings are shown on the display or on LED’s alongside the respective buttons. The machine remembers
the settings and options you make for each program and start from them (with one or two exceptions –
temperatures over 60°C and delayed start) next time you select the program concerned.

Temperature 30-95°C or C

For certain programs it is not possible to select a temperature higher than 40°C, (see program table).

( when setting for Fahrenheit) means that the washing temperature will be equal to the temperature

of the incoming water.

Spin 400-1600 rpm. No spin ( ) or No drain ( ).

For certain programs it is not possible to select a speed higher than 800 rpm, see the table.
Speed 400-800 rpm means short spin.
Speed 1000-1600 rpm always means long final spin.

Delayed start (1-24 hours)

means that the option has been switched off and the program will start immediately as usual.

Super rinse

Super rinse means that extra rinses are added to the program (see program table).

E2 Economy and efficiency

The option means that the main wash is extended by 22 minutes. E2 can only be used on Heavy wash,
Normal wash and Light wash.

High water level

High water level means that an extra amount of water is used in the main wash and rinses. This option
may be used for all wash programs except Wool wash and Hand wash. These programs always have
high water level.

Pre-soak

Pre-soak means that the wash is left to soak two hours before the program starts.

Anti-crease

Anti-crease means that the machine rotates the drum one or two seconds per minute for two hours after
the end of the program. Anti-crease does not operate together with No spin and No spin/No drain.

Flashing

Error messages

If an error or fault occurs in the course of the program this is indicated on the display .

N.B.

To reset the error message the main switch

must be turned off.

Faultfinding

The machine does not start

1. Is the washing door properly closed?

2. Check that the Delayed start option has been switched on. The time remaining until start will then
appear in whole hours on the display , e.g.

. To change: stop the program, change the setting and

restart.

3. Is there a break in the power supply? Check the house fuses (plugs).

4. Has the child lock been switched on? If so hold down the

- button for three seconds.

The display shows Description Explanation/proposed measure

Draining fault

The machine indicates that it has not succeeded in
pumping out the water within 3 minutes.
Where there is a draining fault check:

- that no object has caught in the drain hose outlet

- that the drain pump is not blocked by foreign ob­jects. Clean the pump, see Chapter 11, Maintenance
and cleaning, in the instructions for use.

- that there are no kinks in the drain hose.
After the fault has been remedied run the Drain pro­gram. If this does not help, call service.

Water inlet fault

The indicates that it does not reach the water level
within 5 minutes.
Where there is a fault in the water supply, check:

- that the cock on the water pipe is open.

- that the screen in the machine water intake is not
blocked.

1. Close the water cock.

2. Unscrew the hose.

3. Clean the screen in the inlet valve on the machine.

4. Retighten the hose.

5. Open the water cock.

6. Run the program again to check whether the fault
has been remedied.

Thermistor fault

Temperature stop fault

Foaming (this function is not provided on all machi­nes).

The fault indication appears at the end of the pro­gram, but foaming is checked after the main wash.
Run the rinse program once. Check the washing pow­der doe. Use low lather washing powder.

Door opening fault

The machine has not spun.

1. The machine has a built-in imbalance sensor which
causes the speed to be reduced or the spin to be jum­ped if there is major imbalance in the load. Turn off
the main switch and turn it on again. Open the door
and redistribute the wash.

2. After the fault is remedied run the Spin program.

You have tried to start a program with the door open.

Close the door and try again.

Flashing

Over flow

The sensor receives the first signal that Over flow has
taken place if, or example, an inlet valve has jammed or
if the machine has taken in water for a reason which the
sensor cannot control.
Machines with a float also receive the indication when
there is water at the bottom of the machine.

Wash motor fault

Interruption in any cables to the motor gives rise to this
fault, which means that an interruption in the power to the
motor may also produce the fault. Locking of the motor
also results in an error indication.

The machine indicates whether there is an interrup­tion or short-circuit in the thermistor.

Indicates whether the temperature is not reached
within 80 mins., 30 mins. For wool and hand wash.

A fault has occurred on the control card, which must
be replaced to ensure complete safety.

The following conditions apply to the consumption values indicated below:
T emperature of the incoming water: 15°C. Element power: 2000W. Options: none.

Consumption values

PROGRAMME MATERIAL/WASHING LOAD WATER CONSUMP- POWER CONSUMP- PROGRAMME TIME

TEMPERATURE(1) (2) TION (approx. litre) TION (approx. kWh) (approx. minutes)

Heavy wash Cotton, linen, 60°C 5,0 kg 5-rinse: 62 1,20 140

3-rinse: 52 135

Normal wash Cotton, linen, 60°C 5,0 kg 59 0,95 125

49 120

Light wash Cotton, linen, 60°C 5,0 kg 59 0,90 85

49 80

Synthetic wash Polyester, cotton / 3,0 kg 28 0,35 65

polyester, nylon, 40 C

Quick wash Cotton, linen, 60°C 5,0 kg 35 0,90 5 8

Super quick Polyester , cotton / 3,0 kg 22 0,30 3 5

wash polyester, nylon, 40 C

Wool wash Wool/Hand wash, IWS, 2,0 kg 54 0,30 40

Superwash, 30

°C

Hand wash W ool/Hand wash, IWS 2,0 kg 54 0,30 40

Superwash, 30°C

Rinse Cotton, linen 5,0 kg 7-12 0,05

programme

Spin Cotton, linen 5,0 kg ---- 0,05

Drain Cotton, linen 5,0 kg ---- ---- 1

(1) All programmes are set to the highest available spin speed.
(2) The machine can handle a maximum load of 6.0 kg.

Varies according
to model

Varies according
to model

Test program

The machine control unit incorporates a built-in test program which can be used for faultfinding.
The machine can be provided with various silicon chips for different markets, which is why we have
numbered the buttons as shown in the figure below:

S1

S2

S4

S5

S3

S6

Hold down

Start

Stop

and at the same time press S5 5 times in 15 seconds to start level 1 of the test program

(see below).
Press S6 once to reach level 2.
Press S6 again to return to level 1.

Start

Stop

ends the test program.

Select level 1
S1 Inlet valve 1 (pre-wash compartment)
S2 Inlet valve 2 (main wash compartment)
S3 Inlet valve 3 (hot water)
S4 Inlet valve 4 (washing powder compartment)
S5 Door pull magnet

Select level 2
S1 Heating relay (clicking sound from relay on control unit).
S2 Drain pump
S3 Motor, normal running
S4 Motor, economy running
S5 Long spin

Loops and their function.

J1 J2 J3 J4 J5

E 14

Loop Option Not broken / Closed Broken / Open

J1 Eco/High water level (S5) Eco High water level
J2 Pre-soak/Anti-crease (S6) Pre-soak Anti-crease
J3 Number of rinses 3 rinses 5 rinses
J4 Foaming Off On
J5 Not used

Reprogramming display and button functions.

Change from Celsius to Fahrenheit.

Program knob in 0 position 5 x Start + 5 x Temperature.
Change setting with Temperature button.

Setting child-safe Start.

Program knob in 0 position 5 x Start + 5 x Spin.
Change setting with the Spin button, 0 or 3 seconds.

Setting of water intake.

Program knob in 0 position 5 x Start + 5 x Later start.
Change setting with Later start button. C=cold E=mix H=hot

Setting of spin speed.

Program knob in 0 position. Hold down the Start button+ press 5 x Super rinse.
Release the Start button and change setting with Super rinse.
1300, 1400, 1500 or 1600 rpm.

Loops on WM 50 control card

Control unit Art.no. 8064257

Program WM50 5 -rinse

Program WM50 3 -rinse

WM505566-5

Programme information Programme content

Programme No.

1/3 (2,0 kg)

1/2 (3,0 kg)

Rinse

Long spin

Programme

Max. quantity

Temperature

°C (A)

Max. spin speed

rev/min

Pre-wash

Main wash

Spin

Rinse (B)

Spin

Rinse (B)

Spin

Other

1/1 (6,0 kg)

Wash Short spin

(max. 800 rev/min)

(A) C in the display denotes the temperature of
the incoming water.
(B) The Super rinse On option provides two
extra rinses before the final normal rinse.
(C) Delicate wash – high water level.

C,30-95 1500Heavy wash1
C,30-95 1500Normal wash2
C,30-95 1500Light wash

Shorter main wash than for Normal
wash.

3

C,30-95 800Synthetic wash4
C,30-95 1500Quick wash5
C,30-95 1500Super quick wash6
C,30-40 800Wool wash (C)7
C,30-40 800Hand wash (C)

Slightly more gentle than Wool
wash.

8

Rinse programme9

Spin

10

Pumping onlyDrain11

1500
1500

Programme information Programme content

Programme No.

1/3 (2,0 kg)

1/2 (3,0 kg)

Rinse

Long spin

Programme

Max. quantity

Temperature

°C (A)

Max. spin speed

rev/min

Pre-wash

Main wash

Spin

Rinse (B)

Spin

Rinse (B)

Spin

Rinse (B)

Spin

Other

1/1 (6,0 kg)

Wash Short spin

(max. 800 rev/min)

C,30-95 1500Heavy wash1
C,30-95 1500Normal wash2
C,30-95 1500Light wash

Shorter main wash than for Normal
wash.

3

C,30-95 800Synthetic wash4
C,30-95 1500Quick wash5
C,30-95 1500Super quick wash6
C,30-40 800Wool wash (C)7
C,30-40 800Hand wash (C)

Slightly more gentle than Wool wash.

8

Rinse programme9
Spin10

Pumping onlyDrain11

(A) C in the display denotes the temperature of the incoming
water.
(B) With the Super Rinse On option:
For programmes 1-3, four extra rinses will be included, and
one spin will be omitted.
For programmes 4-8: two extra rinses will be included
before the final ordinary rinse.
(C) Delicate wash – high water level.

1500
1500

WASHING MACHINE MOTOR

WM 50/55A/56/66A (FHP)

Art.no. 80 637 34 (50/60 Hz)

Resistances:
Pins 5-6 Stator 1,58 W
Pins 7-6 Stator 0,87 W
Pins 3-4 Rotor 1,20 W*
Pins 1-2 Tacho 135 W
*) 1,20 W measured diagonally across collector .
All resistance values are ±8%.

MOTOR CONTROL UNIT WM 50/55A/56/66A

Art.no. 80 613 99

The motor control unit is an external unit
(MCU) which is installed on the bottom and
connected to the program control card (PCU),
see electrical diagram.

ELEMENT
2000 W

Art.no. 80 617 06

Resistance: 28,4 W

1000 W

Art.no. 80 617 07 (Certain models)
Resistance: 56,7 W

THERMISTOR

Art.no. 80 616 63

Resistance: 65-35 kW
Room temperature 20-30 °C

The thermistor for temperature measurement is
installed between the motor cradle and the
tank.
The thermistor measures and controls the water
temperature, which may vary from 0-90 °C.
The element is sisconnected if the thermistor is
short- circuited or disconnected from the
program control card or programmer .

DRAIN PUMP
50 Hz

Art.no. 80 616 96
N.B. Ordered under art.no. 88 011 66.
Resistance: 144 W
Current: 0,2 A, 23 W loaded

60 Hz

Art no. 80 619 37
N.B. Ordered under art.no. 88 011 67.
Resistance: 76 W
Current: 0,3 A, 28 W loaded
The drain pump is combined with an integra­ted needle trap, which can be cleaned by the
user .
If the drain pump has run for 180 seconds during
draining, the program i stopped, reset and an error
code appears on the display .

LEVEL SWITCH

Art.no. 80 642 75

An electromechanical level switch with two
levels, see wiring diagram. Controls the water
level and starts the drain pump if Over flow is
indicated.

Components and measured values

LEVEL SENSOR

Art.no. 80 616 64

ASKO Level sensor type 1166.
Voltage:
0,5 V output from the sensor at pressure 0 and
0-level is reached during pumping out.
Measurement by control unit.

The level sensor is mounted on the bridge for
electrical components and connected to the
PCU, see electrical diagram.

RADIO SUPPRESSION FILTER

Art.no. 80 585 58

Leakage current 230 V/ 50/60 Hz 0,3-0,4 mA
The filter eliminates radio interferences in the

machine.

INLET VALVES
3-way inlet valve

Art.no. 80 617 57

Resistance: 3,7 kΩ ± 0,5 kΩ
Current: 0,02 A, 5 W

Inlet valve for hot water (option)

Art.no. 80 617 29

Resistance: 3,7 kΩ ± 0,5 kΩ
Current: 0,02 A, 5 W

INDICATING LAMP (WM50/55A/66A)

Art.no. 80 640 68 USA
Current: 230 V, 50 Hz 1,7 mA

Art.no. 80 640 69 EU
Current: 230 V, 50 Hz 1,7 mA

The lamp indicates that the main switch is tur­ned on.

DOOR LOCK

Art.no. 80 616 79

Resistance: 122 Ω
Current: ca 2 A
The door lock is mechanical and is controlled
by the button for door opening and different
safety devices.

PROGRAM CONTROL CARD (WM50/55A)

Art. no. 80 642 57

PANEL CARD (WM50)

Art.no. 80 642 60 (ASKO)
Art.no. 80 642 71 (OEM)

FUSE

Art.no. 80 554 21 6,3 A (EU)

80 581 40 15 A (US)

80 800 70 Rev. 1

Components and measured values