Teka DW7 41 FI Manuale utente

Service Manual

MSDW15070

Models:

DW7 57 FI

DW7 41 FI

LPI 759

Contents

1. Introduction.......................................................................................................... - 1 -

2. Control Panel ........................................................................................................ - 1 -

3. Service Test........................................................................................................... - 1 -

4. Error codes............................................................................................................ - 2 -

5. Wiring diagram ..................................................................................................... - 4 -

6. Water circuit scheme............................................................................................ - 5 -

7. Electrical components .......................................................................................... - 5 -

Service Manual

DW7 57 FI –DW7 41 FI –LPI 759

Service Manual: MSDW15070 - 1 -

1. Introduction

This document explains how to perform the Service Test for the related Dishwasher.

2. Control Panel

1.ON/OFF button

5.Salt and rinse aid warning light

2.Power on light

6.Program button

3.Delayed start button

7.Program indicator light

4.Display

3. Service Test

To activate test program, with the door opened and machine off, hold down the

Program button and press the POWER button until the machine enter into Test

Program. The appliance will pause and stand by(as step 00). Then close the door to

start the Test Program.

During test program running you can press Program button to jump into next step

(except inlet valve step).

No.

Proceso

Display

Estado

Initialization

Power on, stand by

Inlet valve

Open inlet valve and feeds with 3.6L wáter (3.0L

in 45 cm models)

Washing pump

and dispenser

Dispenser will act once and washing pump will

run for 60 sec. in this step

Heating element

Run washing pump and heating element until the

water temperatura reaches 57ºC. Then the

machine will pause

Press Program button to jump into the next

step

Drain pump

Drain for 30 sec.

Service Manual

DW7 57 FI –DW7 41 FI –LPI 759

Service Manual: MSDW15070 - 2 -

Pause

Pause for 10 secs.

Inlet valve

Open inlet valve and feeds with 3.6L (3.0 in

45cm. models)

Washing pump

Run washing pump for 2 mins.

Pause

Pause for 5 secs.

Washing pump

and half load valve

Run washing pump for 1 min. If model is

equipped with half load valve, it would be

working during this step

Drain pump and

regeneration valve

Open regeneration valve and drain for 30 secs.

Finish

Buzz one sound, stop, and stand by.

4. Error codes

E1 Water filling exceeds pre-set time.

If the inlet valve has been opened for 4 minutes but the water quantity hasn’t reached

the desired value (measure by pulses).

When E1 occurs, the drain pump will run until flowmeter keep motionless for 2

minutes and all the other components will be stopped immediately.

At the same time, the buzzer will sound for 30 seconds and E1 will be shown.

E3 Heating exceeds pre-set time.

If the heating element has been working for 60 minutes but the water temperature

detected by NTC hasn’t reached desired value.

When E3 occurs, the drain pump will run until flowmeter keep motionless for 2

minutes and all the other components will be stopped immediately.

At the same time, the buzzer will sound for 30 seconds and the eE3 will be shown.

E4 Overflow

At any time, if overflow micro-switch act and keep for longer than 2 seconds, the E4

error will appear.

When E4 occurs, the drain pump will run until flowmeter keep motionless for 2

minutes and all the other components will be stopped immediately.

Service Manual

DW7 57 FI –DW7 41 FI –LPI 759

Service Manual: MSDW15070 - 3 -

At the same time, the buzzer will sound for 30 seconds and error 4 will be shown.

Note: Priority level of E4 is the highest. E4 operation is valid after other error

operations. When E4 operation has done, all the others are invalid.

E6 Open-circuit failure of NTC Sensor

In test program, once open-circuit failure of NTC sensor is detected by controller, the

E6 will appear.

When E6 occurs, the drain pump will run until flowmeter keep motionless for 2

minutes and all the other components will be stopped immediately.

At the same time, the buzzer will sound for 30 seconds and error 6 will be shown.

E7 Short-circuit failure of NTC sensor

In test program, once short-circuit failure of NTC sensor is detected by controller, the

E7 will appear. When E7 occurs, the drain pump will run until flowmeter keep

motionless for 2 minutes and all the other components will be stopped immediately.

At the same time, the buzzer will sound for 30 seconds and error 7 will be shown.

Service Manual

DW7 57 FI –DW7 41 FI –LPI 759

Service Manual: MSDW15070 - 4 -

5. Wiring diagram

Service Manual

DW7 57 FI –DW7 41 FI –LPI 759

Service Manual: MSDW15070 - 5 -

6. Water circuit scheme

7. Electrical components

Inlet valve

Voltage = 220 –240 V

Resistance = 3.4 –4.3 KΩ

NTC sensor

Service Manual

DW7 57 FI –DW7 41 FI –LPI 759

Service Manual: MSDW15070 - 6 -

Flowmeter

Using a multi-meter in Diode testing mode, there should be

electrical pulses sent out while water is passing through the

flowmeter.

Washing pump

Voltage = 220 –240 V

Resistance = 131.4 Ω(±10%)

Capacitor = 3µF

Drain pump

Voltage = 220 –240 V

Resistance = 150 –220 Ω

Heater

Voltage = 230 V

Power = 1800 W

Resistance = 29.3 Ω ± 1.47 Ω

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