Logik LDW60W11N Betriebsanleitung

Contents

Technical Service Manual

Dishwasher

Specification 2

Test program 24-28

Theory of parts 5-23

Function Description 3-4

Inspection 29-33

Location 5

PCB 6-7

Inlet valve 8-10

Drain pump 11-12

Heater 13-14

Washing pump 15-16

Procedure 25

Error code 26-28

Water circuit 3-4

Pressure switch 17

NTC 18-19

Flowmeter 20-21

Safety Hose 22-23

Troubleshooting 34-38

SAFETY NOTICE

This documentation is only intended for qualified technicians

who are aware of the respective safety regulations.

-1 -

Specifications

For the basic operation instructions, please refer to the

instruction manual attached with each unit.

Electrical supply 220-240V, 50Hz

Supply water pressure 0.04MPa-1.0MPa

Supply water temperature below 60℃

-2 -

Models: DIXONS-9241C/9242C/9241B/9242B

washing pump

pressure switchpressure switch

drain pumb

drain hose

over flow switch

air breaker

inlet valve

inlet hose

Regeneration water routeRegeneration water route

upper spray arm

top spray

tube

Inlet water routeInlet water route

upper spray arm

softener

Water circuit scheme

regeneration valve

Cycle water routeCycle water route

Drain water routeDrain water route

Water Circuit Function Description->

-3 -

Process of water inlet (indicated by magenta route)

Process of cycle washing (indicated by blue route)

Process of regeneration (indicated by green route)

In this process, regeneration water route is cut off, main water route is open. The water in the main water

route is softened when pass through the softener, and then enter in the tub. During this phase, some of inlet

water will be stored in the air breaker to be regenerating water.

Cycle washing action is driven by washing pump motor. Water can obtain the power during it passing through

the working washing pump, then be pumped into spray arm, pass from spray arm nozzles, over the dishes,

into sump ,where connect to washing pump, and to get in the next water cycle.

Regeneration valve is open, the regenerating water dissolve salt in the salt chamber of softener, and then

enter in the resin tank to reactivate the resin.

Water Circuit Function Description->

-4 -

Location Theory of parts->

Inlet valve

Washing pump

Capacity Softener Overflow switch

Filter system

Heater

Over Heat Proof

Micro-switch

Dispenser

Sump

Water inlet

Air breaker

Pressure switch(83/63)

(only for models whose water filling

be controlled by pressure switch)

Pressure switch(140/120)

Please Note: Exploded view and part list of each model have some different visions, so

please refer to newest vision Midea sent you.

-5 -

PCB Theory of parts->

Printed Circuit Board is the control center of dishwasher, which receive and process signal

from components, send order to components and deal with the feedback information, etc.

Removing the control panel

The control panel can be removed from dishwasher door.

1. Remove the six screws securing the control panel to the door.

2. The control panel will drop down and be free of the door. But, the wiring will

still connected to the control panel.

Off

Access PCB

3. Disconnect the connector form PCB.

4. Remove the screws securing the PCB to control panel.

5. Remove the PCB.

6. Reverse the above procedure to install.

PCB

Note: For the majority of models, the PCB is located behind the control panel. The minority

of models locate the PCB on the side of strengthening muscle. You can judge the location by

the newest exploded view Midea sent you.

-6 -

PCB Theory of parts->

Map of PCB

Description

Mark Function

HEAT Output for Heating Element

ACL Input of live wire

ACN Input of bull line

IS Input of Door Switch

EV1-L Firewire input of inlet valve

RE Thermister

ML Washing Pump

PS Drain Pump

D/ED Dispenser

EV1 Inlet valve

EV2 Softener

EV3 Halfload Valve

ISS Salt detect

ISB Rinse detect

IAQS Overflow detect

FM Flowmeter

FAN Fan

PO Pressure Switch(83/63)

Note: This map is only applies to 9338 model.

There is small pole’s location difference

between different models.

But the marks on PCB have the same meaning

.described on the left side

-7 -

Technical data

Location of inlet valve Appearance

Inlet Valve Theory of parts->

The work principle

The inlet valve is electromagnetic valve that decide whether water enter or not. Valves are

normally closed. Each time the appliance requires water, the controller will convey an

electric signal to the coils to open the valves.

The inlet valve consist of electric coil, valve body, valve pole, filter etc.

In a word, the electromagnetic valve can act to allow water enter into machine, when it

receive the order given by controller.

to air breaker

connect to

inlet water hose

terminals

electric coil inside

The defeat point

1. The valve coil is broken, so the valve can’t open. It will cause the E1 error.

2. The filter is jammed, so water can’t enter. It will cause the E1 error.

3. The connector is loose, so the valve can’t open. It will cause the E1 error.

4. The valve pole is rusted or locked by dreg, so the valve can’t open or close. It will cause

the E1 or E4 error.

Nominal voltage 220-240VAC

Frequency 50/60Hz

Resistance Approx:3.4－4.3kΩ

100%ED T25

3min/5min T60

Flux 4L/min ±15％

Power 6W

Work Pressure 0.04－1MPa

Work duty

-8 -

Inlet Valve Theory of parts->

3. Top panel

4. Left side panel

1. Baseboard

2. Left baseboard

5. Middle rear

crosspiece

Inlet valve

Access inlet valve

1. Disconnect power.

2. Remove the water inlet hose. (Note : Be careful of remain water drop.)

3. Remove the baseboard, left baseboard, top panel, left side panel and middle rear

crosspiece.

4. Disconnect the 2 terminal lugs

from the inlet valve.

5. Push the valve from the lower

rear crosspiece to take it off.

6. Remove the clamp and

disconnect the inlet hose (to air

breaker) from the water valve.

7. Reverse the above procedure

to install.

1.Open the control panel and take out the PCB;

2.Unplug the CON3 and P4 wires , then use the multi-

meter shelf to measure resistance between the blue

wire (EV1) and white wire (IS), the normal resistance is

about 3.4K to 4.3K .

3. I f the measured resistance is not correct, it means the

valve coil is broken or the connector is loose. In this

case, we should check the connection first. If the

problem hasn’t been solved by re-connection, we should

replace the valve..

4.If the resistance is OK, we need to inspect the valve

body.

ΩΩ

Inspect inlet valve

unplug

Ev1

Check electric part

Attention: Build in models have no Baseboard and

left and right baseboard, but adjustable baseboard.

-9 -

Inlet Valve Theory of parts->

Check machine part

1. If the electric part is OK, we need to check the machine part.

2. Remove the baseboard, left baseboard, top panel, left side panel and middle rear

crosspiece.

3. Check the valve filter. if the valve filter is blocked, we need clear the residues.

4. If the valve filter is clear and the valve can’t inlet water, check whether valve can act or

not. If it isn’t , we need replace the valve.

5. If the water is continue entering, we need replace the valve.

-10 -

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