Beko B13, B7S, B7SLED Washing machines - How to enter the service mode, Error codes and details, main components functions and ratings, wiring diagram
Electronic Control and Visual Card
By means of the control and visual card which is designed to have
a single face and manufactured by ARCELİK; the wash programs which are written
onto the microprocessor, washing and spinning motor profiles, protection algorithms and components
(motor, heater, pump, valves, door safety lock, NTC, water level selection switch, spinning/temperature selection potentiometer) are controlled.
There are feeding circuit on the front face of the card (SMPS), motor and other
component control circuits -triac and relays - and component connection
terminals and on its rear face there are microprocessor, function and time delay button
and LEDs and program tracking LEDs.
Necessary wash program is operated in line with the information read from the program
selection switch which is connected to the card (rotary switch), spinning/temperature
setting potentiometer, auxiliary function and Time Delay switches.
From the card, auxiliary function, speed/temperature and time delay options and
functions can be selected.
Safety Switch (Door Lock)
|
Rated Operating Voltage |
: 250V 50-60Hz |
|
Operating Current |
: 10-50 mA |
|
PTC Resistance |
: Min. >=50 ohm |
PTC door safety lock was used. When any wash program is started
after the door is closed, PTC disk is heated and the door is locked and it is
prevented to be opened when the program is in progress.
After the program finishes, PTC cools down in 70s and the door is unlocked.
Current of all components passes over the door safety lock. Machine will not
work in case it is faulty.
When 220V is supplied between the contacts numbered 3 and 1, the distance between
the contacts numbered 3 and 2 should switch to closed position.
Motor
Universal
series motor is used. Universal series motor consists of stator and rotor. Stator
and rotor windings are connected in series by means of collector and brush and
current is transmitted to the rotor windings. Motor speed control is made over electronic
card. Motor triac on the card adjusts the motor/drum speed by changing the
triac triggering angle according to the signal coming from the tacho. In case
of abnormal situations (continuous operation-locked rotor), thermocouple is
available on the motor winding to protect the winding from overheating.
|
Rated Operating Voltage |
220-240V 50-60Hz |
|
Current |
6A max (washing) / 3A (spinning) |
|
Input Power |
300 / 450 W |
|
Starting Current |
5...8A (washing) / 10A max (spinning) |
Technical specifications of tachogenerator
|
Number of double pole |
8 |
|
<45 V |
Heater
It is
used to heat the water inside the drum.
Since it is an electronically controlled machine, there is a double
thermocouple at each of the heater inlets.
When the heater operates dry, the overheated thermocouple open circuits the
heater.
Open circuited heater cannot be used again. In order to prevent the heater to operate
without water “during heating”, heater safety water level is defined to the microprocessor
(Psafety). When the water level which is measured by the water level sensor
comes under the defined Psafety level, heater is disabled.
When the water temperature which is read by NTC reaches to the “selected temperature”,
heater is disabled by the microprocessor.
Operating Voltage : 230VAC 50-60 Hz
Power : 1950W
Resistance : 26W ± 3W
When the resistance is measured from both ends with multimeter,
approx. 26W should
be read.
Valve
There is 2-way valve in the models which have a
single water inlet and there is 2-way valve and extra single valve in the
hot-water inlet machines. Valves are driven by the triacs on the electronic
board; and they are driven with both valves in the softener step by use of
crashed water directing system and the water is directed to the medium
compartment of the detergent dispenser.
|
Rated Voltage |
220-240 V 50/60 Hz |
|
Rated Power |
5-8 W |
|
Winding Resistance |
3400-4500 ohm |
|
Flow |
10 l/min |
Drain Pump
It is a synchronous motor equipped with a mono-phase bipolar
magnet rotor. At the draining step, electronic control card is activated by the
triac on it. It is protected by impedance for continuous operation and blocking
situation of the rotor.
Drain pump drains the water inside the drum.
|
Rated Voltage |
220-240 V 50Hz |
|
Resistance |
145 ohm |
|
Current |
<0.2A |
|
Flow |
>14 l/min |
NTC
It is a
component which is used to measure the water temperature inside the drum and
resistance of which decreases when the temperature increases.
Resistance values which are read from the NTC ends by means of
multimeter are compared to the below table. These approximate values should be
read.
|
Resistance |
(25 °C) |
: 4773 ohm (±4.2%, Siemens)- |
|
Operating Temperature |
Water Level Sensor
An analog water level sensor which is fed by 5 V voltage is used.
This sensor ensures that the water level is determined instantly with the
frequency values which it generates against the pressure created. There are
frequency values corresponding to the all pressure values. An infinite number
of levels can be determined in the analog water level sensor. Water levels
change according to the wash criteria of the designed program depending on the
selected program, temperature and auxiliary function.
Analog water level sensors are pressure – displacement inverter components in general.
Analog water level sensors generate frequency modulation as output. There are basically 2 capacitors, 1 coil and an inverter circuit
on itself or the control system to which it is connected. Pressure increase pushes a ferrite part inside the sensor into the coil.
Therefore L (inductance) value of coil winding changes and the output value of
the sensor – inverter system changes. Therefore pressure value can be measured
in an analog manner.
The amount of water to be taken in for the programs is controlled by the water meters. Water level sensor serves the basic functions of deciding to take in water again, control the heater safety level, door opening level or foam level.
Also, if there are any error in the water meters or its connections, water is
taken in with the water level sensor.
When it is empty, 625 ± 2 Hz frequency value should be read from
the Data and GND terminals.
Cable inputs
5VDC / Data / GND. Operating Voltage : 5 VDC
Power circuit diagram
Error codes details
Service mode and details
Entrance Method to Service Mode:
* By pressing the “Start/Pause” button, you can switch to “Service” mode when you turn the button to the first program from the rotary “ON/OFF” position CW.
* To activate the components which are controlled in each step of the service mode, the door has to be mechanically locked, that is, components must be powered. For example, to rotate the motor, the door must be locked, in other words motor must be energized.
* After the service mode is entered, if door contact is not closed for any reason (door lock is faulty or door lock triac is faulty), that is electronic card is energized but the driven components (heater, motor, pump, etc.) are not:
a) In Models with LED: "Ready" follow up LED will be lit steadily. In
the meantime, if EEPROM has a "Error Code", they will be coded at
"Spin Level" LEDs (in decimal system (BCD format)).
If there is no error, all of the "Spin Level" LEDs will be turned
off.
Also, if "Start/Pause" button is pressed, then no change will take
place in the above mentioned issues and as the door is not locked in real
"Service Mode" steps will not be progressed and "Error
Code" will be shown steadily.
b) In 7S models : If you have an "Error Code" on EEPROM, this will be shown on
7S display as "E?"
If there is no error, "E--" will be shown on 7S display.
Also, if "Start/Pause" button is pressed, then no change will take
place in the above mentioned issues and as the door is not locked in real
"Service Mode" steps will not be progressed and "Error
Code" will be shown steadily.
* The energy of the machine is interrupted due to any reason whatsoever at any stage of service test (due to “ON/OFF” or power cut), WM goes back to "Selection Mode" when it is energized again.
If more that 2 minutes are waited at a service test step, WM goes back to
selection mode.
At the service mode, components are activated one by one by pressing the
Start/Pause button. In turn:
1) At startup, “Error Code” which is created last and recorded to EEPROM is
shown.
Following points should be paid attention when “Error Code” is displayed:
In 7S Models
If there
is an “Error Code”, counterpart of this code in the decimal system (in BCD
format) is displayed on 7S by adding “E” to the beginning. Example; “E09” or “E13”.
If there is no “Error Code”, this is displayed on 7S as “E--”
Only in Models with LED
If there
is an “Error Code”, counterpart of this code in the decimal system (in BCD
format) is encoded to the “Spin Level LEDS". When encoding is performed,
weights of the orders from the bottom to the top are as follows 20=1, 21=2,
22=4, 23=8 Hertz in turn. For example, if the "Error Code" is
"03" then the bottom most 1st and 2nd LEDs will be turned on while
others are turned off. If the "Error Code" is "08" then only
the 4th LED from the bottom will be turned on while others are turned off.
If there is no "Error Code" then all LEDs should be turned off. Next step is taken by pressing the "Start/Pause" button;
2) "Error Code" and other information stored in EEPROM (point
to resume) are deleted from EEPROM and in 7S models 3-digit software version is
displayed, and to switch to the next step "Start/Pause" button is
pressed; Only in Models with LEDs the next step will be automatically
progressed (without pressing "Start/Pause" button).
3) By flashing all segments of 7S and all LEDs "Display" test
is realized.
When "Start/Pause" button is pressed, all segments of 7S and all LEDs
are turned off to end "Display" test and switch to next step;
4) Turned for 52 rpm to right (CW). Meanwhile, in 7S models,
"4", which is the "service mode step number" of this step
is displayed. In Models with LED, of the "Program Tracking LEDs"
above the "Start/Pause" button, the 3rd LED from the bottom will be turned
on (weight of orders from bottom to top are 20=1, 21=2, 22=4, 23=8, 24=16);
Next step is taken by pressing the "Start/Standby" button;
5) Turned for 52 rpm to left (CW). Meanwhile, in 7S models,
"5", which is the "service mode step number" of this step
is displayed. In Models with LED, of the "Program Tracking LEDs"
above the "Start/Pause" button, the 1st and 3rd LED from the bottom
will be turned on (weight of orders from bottom to top are 20=1, 21=2, 22=4,
23=8, 24=16);
Next step is taken by pressing the "Start/Standby" button;
6) In the previous movement, motor movement is stopped and following
checks were performed and tester was informed in different ways: If the Water
Level Value read on the Water Level Sensor is out of the limits (if Water Level
Sensor socket is properly fitted or if it is loose), next step "7" is
taken. This way, there is not any drum movement in step 6 and if step 7 is
taken automatically, person making the test will sense this condition as "Water
Level Sensor Error" .
b) although the Water Level Value read on the sensor is within the limits if it
is above "Safety Level", pump is operated and when the level drops
below the "Safety
Level" basic controls of this step are carried out (meanwhile drain pump
is active).
These are, in the order of priority
1 If there is NTC error, 100rpm is applied;
2 If there is no NTC error, but if the values read at Line
Voltage Reading Inlets (Line_Voltage_ADC) are below 185 Volts or above 265
Volts, 140 rpm is applied. This
error could be caused by two conditions:
Either the ADC inlets of microprocessor are defective or it is indeed out of
the line voltage limits.
3 If there is no any NTC error and no error on Line_Voltage_ADC
inlets, “MAX_SPEED / 2” "MAX_SPEED" rotation is
applied."MAX_SPEED/ 2" (Rev03_28112012):
Modified as MAX_SPEED. Meanwhile, "6", which is the service mode step
number is displayed on screen of 7S Models;
In Models with LED, of the "Programme Tracking LEDs" above the
"Start/Pause" button the 2nd and 3rd LEDs from the bottom will be
turned on (weight of orders from bottom to top are 20=1, 21=2, 22=4, 23 = 8, 24
= 16);
Next test step is taken by pressing the "Start/Pause" button.
7) Motor movement which is started in the previous step is stopped and
pump is shut.
“PRE_WASH_VALVE” which is the main test of this step is opened and checked.
Meanwhile, "7", which is the service mode step number is
displayed on screen of 7S Models;
In Models with LED, of the "Programme Tracking LEDs"
above the "Start/Pause" button the 2nd and 3rd LEDs from the bottom
will be turned on (weight of orders from bottom to top are 20=1, 21=2, 22= 4,
23 = 8, 24 = 16);
Next test step is taken by pressing the "Start/Standby" button.
8) “PRE_WASH_VALVE” which is opened for test in the previous step is
shut.
“MAIN_WASH_VALVE” which is the main test of this step is opened and checked.
Meanwhile, "8", which is the service mode step number is displayed on
screen of 7S Models;
In Models with LED, of the "Programme Tracking LEDs" above the
"Start/Pause" button the 2nd and 3rd LEDs from the bottom will be
turned on (weight of orders from bottom to top are 20=1, 21=2, 22=4, 23= = 8,
24 = 16);
Next test step is taken by pressing the "Start/Pause" button.
9) “MAIN_WASH_VALVE” which is opened for test in the previous step is
shut.
“SOFTENER_VALVE” which is the main test of this step is opened and checked.
Meanwhile, "9", which is the service mode step number is displayed on
screen of 7S Models;
In Models with LED, of the "Programme Tracking LEDs" above the
"Start/Pause" button the 1st and 4th LEDs from the bottom will be
turned on (weight of orders from bottom to top are 20=1, 21=2, 22= 4, 23 = 8,
24 =16);
Next test step is taken by pressing the "Start/Pause" button.
10) “SOFTENER_VALVE” which is opened for test in the previous step is
shut.
"HOT_WATER_VALVE" which is the basic test of this step is opened to
check if available
on the machine being tested (if no hot water valve is available, this step is
automatically skipped").
Meanwhile, "10", which is the service mode step number is displayed
on screen of 7S Models;
In Models with LED, of the "Programme Tracking LEDs" above the
"Start/Pause" button the 2nd and 4th LEDs from the bottom will be
turned on (weight of orders from bottom to top are 20=1, 21=2, 22= 4, 23 = 8,
24 = 16);
Next test step is taken by pressing the "Start/Pause" button.
11) “HOT_WATER_VALVE” which is opened for test in the previous step is
shut.
HEATER test which is the main test of this step is conducted as follows;
If the Water Level Value read on the Water Level Sensor is out of
the limits (if Water Level Sensor socket is properly fitted or if it is loose),
next step "12" is taken. This way, if there is not any increase in
power in step 11 in terms of washing machine consumption and if step 12 is
taken automatically, person making the test will sense this condition as "Water
Level Sensor Error".
(Rev02_07102011):
b) Although the Water Level Sensor readings are within limits if
the water level is below "Safety_Level + 20 units" then all valves
will be opened to top up the water level.When the water level exceeds
"Safety Level + 20 units" the open valves will be shut off
automatically. After this stage there are 2 conditions:
i) On a machine without "Main Wash Flow Meter":
HEATER is turned on automatically and 52rpm is applied to right. (With REV_04,
52 rpm to right at Heating step is removed.) Tester checks whether there is an
increase in the power which is consumed by WM and check heater.
ii) On a machine with
"Main Wash Flow Meter":
"Main_Wash_Flow_Meter" will be checked to see if it is higher than
"50" or not.
If it is higher than 50, then Flow_Meter is operating correctly; HEATER will
turn on automatically and a 52 rpm right turn will be applied.(In models with
flow meter, there is motor movement) If it is below 50, then the Flow_Meter is
faulty and therefore the heater will not be "DRIVEN" and proceeded to
the next step of the service mode ("step_12").
In this way Flow_Meter error will be identified.
Meanwhile, "11", which is the service mode step number is displayed
on screen of 7S Models;
In Models with LED, of the "Programme Tracking LEDs" above the
"Start/Pause" button the 1st, 2nd and 4th LEDs from the bottom will
be turned on (weight of orders from bottom to top are 20=1, 21=2, 22= 4, 23 =
8, 24 = 16);
Next test step is taken by pressing the "Start/Standby" button.
12) “HEATER” which is opened for test in the previous step is shut.
Also, the motor movement which is started in the previous step is finalized and
all valves are shut.
“PUMP” which is the main test of this step is opened and water inside the WM is
drained below "Safety_Level". When the water level comes below
“Security_Level”, pump is shut off.
At the beginning of the drain process, MAIN_WASH and HOT_WATER valves will be turned
on for 5 seconds (Rev01_22072011)
Meanwhile, "12", which is the service mode step number is displayed
on screen of 7S Models;
In Models with LED, of the "Programme Tracking LEDs" above the
"Start/Pause" button the 3rd and 4th LEDs from the bottom will be
turned on (weight of orders from bottom to top are 20=1, 21=2, 22= 4, 23 = 8,
24 = 16);
"At the spinning stage, if no error, "turn at max/2 speed"
"rule is modified as "turn at max speed"
The 52 RPM right turn movement at the heater stage is removed.
Since this step is the last stage of the service test, if the “Start/Pause”
button is pressed for one more time, this will return to step 1.
