Why doesn't the washing machine turn on? Thousands of people face this problem every day. There are several variations:
- The equipment does not respond to the on/off button;
- The machine starts, the indicator lights up;
- Everything starts to glow at the same time or chaotically.
Let's consider each case in detail.
No response to start. First, you should check for a simple power outage. If everything is ok, examine the cord from the unit to see if the plug is plugged into the outlet, or if the power cable is damaged. Everything is okay. If the effect is not achieved and you still want to restore operation without involving strangers, replace the internal surge protector. It takes care of voltage fluctuations in the network, and if it is unstable, it regularly fails. To carry out the manipulation, purchase an original spare part from the service center and install it in place of the old one. Did not help?
Check if the door is closed. Sometimes the blocker is triggered and it prohibits starting. If the hatch is locked and cannot be opened by hand: do not force it under any circumstances! You risk tearing off the handle and there will be more problems. Find a small hatch in front - there may be an emergency cable there. It is painted in bright colors - red, orange. Present? Then pull it gently. If there is no cable, you will have to remove the top panel and tilt the unit onto its rear legs. Stick your hand into the resulting opening, feel for the blocker, and open it. You forced the door open. Do a test run. Did not work?
What to watch next. Unfortunately, if the car shows no signs of life, a full diagnosis is required. This is almost impossible on your own if you do not have experience in such communication with other household appliances. Contact the service center to call a specialist at your home. He will arrive with the necessary set of equipment and fix the problem in a short time. The electronic board or programmer is probably damaged. It is not advisable to repair the command apparatus. It is subject to complete replacement.
- The indicator lights up. If he is alone, then the situation is clear. Find out what the warning light indicates. This can be done using the instruction manual. The problem may be easily resolved using a combination of buttons. Some Bosch models provide the ability to make a call to a hotline. The owner is advised on the problems of a burning light bulb, what to press or check. In half of the cases, it is possible to solve the problem remotely, without involving specialists.
- If the entire panel lights up. The first thing that can happen is a short circuit. Pay attention to the wiring throughout the washer, “ring” it. If everything is ok, 90% of the time it is a problem with the electronic board. No experience in repairing electronics (at least some complex ones)? We strongly recommend calling a repairman.
If a damaged unit can be diagnosed independently and replaced, then with the “brains” the situation is not so simple. The slightest failure of the correct mode provokes an incorrect command, and various errors are projected.
How to anticipate unnecessary consequences?
Always perform a graceful shutdown. If the wash does not finish correctly, it is necessary to establish the cause, eliminate it, and be sure to start the “rinse and spin” mode.
The following information is intended for owners of Bosch Maxx 4 and other washing machines. It will help to carry out an initial diagnosis of operating errors at home and prevent the occurrence of more complex malfunctions and complete failure of household electrical equipment.
Service test Bosch Maxx 4
During the operation of German Bosch machines, malfunctions occur less frequently than with competitors; however, the manufacturer has equipped each Bosch Maxx model with a special service test, the so-called self-diagnosis mode, which can determine the performance of all system functions. This function is very useful if several system components are broken.
Launching the diagnostic mode is performed differently depending on the line: Bosch Maxx 4, Bosch Maxx 5, Bosch classixx 5, etc.
Let's look at the test using the Bosch Maxx 4 series as an example.
To start self-diagnosis of Bosch Maxx 4, turn off the machine. Simultaneously press the additional function buttons and turn the mode knob 30° clap. After a successful launch, you can begin selecting a test.
Bosch Maxx 4 programs comply with the following tests:
- cotton 60° - check the electric motor;
- cotton 60° economy - drain pump;
- cotton 90° - heater;
- spin - main valve;
- drain - pre-valve.
To start the program on Bosch Maxx 4, press the “start” button. Faults are indicated by combinations of LEDs. In older Bosch Max models, error codes are displayed.
Error codes usually appear when one of the system elements fails. A DIYer can save time and money by quickly identifying the error using these codes.
Machines of the Bosch Maxx 4, Bosch Classixx 5, Bosch Maxx 6 series or the Bosch Classixx washing machine indicate incorrect operation with the following symbols:
- F16 - when starting programs, the laundry loading hole is open.
- F17 - exceeding the specified time for water entering the system. The reasons are clogged valves and filters, a closed water supply valve to the system.
- F18 - water drain time has expired. The drain valve may be clogged or the water level sensor may be faulty.
- F19 - the standard water heating time for the washing machine has expired. Typical reasons are low voltage in the network, failure of the heating element or thermostat.
- F20 - no water heating. The thermostat or heating element may fail.
- F21 - drum failure. The breakdown occurs due to a broken relay or tachogenerator reverse.
- F22 - malfunction of the NTC sensor. Associated with a short circuit and breaks in the electrical wiring circuit.
- F23 - activation of the Aquastop system. There is liquid in the pan and there is a break in the electrical circuit.
- F25 - turbidity sensor error.
- F26 - malfunction of the analog sensor.
- F27 - flow switch malfunction.
- F28 - failure of the fluid pressure sensor.
- F29 - incorrect operation of the motor.
- F30 - no engine rotation.
- F40 - violation of synchronization of electrical equipment. The reason is the discrepancy between the local electrical network and the required technical characteristics of the machines.
- F50 - low or high flow rate.
- F51 - door error.
- F53 - functional protection failure.
- F54 - malfunction of the control module.
- F63 - control module error.
Elimination of major machine malfunctions
After a thorough diagnosis, malfunctions of Bosch washing machines are strongly recommended to be eliminated as soon as possible. This will help extend the life of your household appliances.
Let's look at the Bosch Maxx 4 as an example. If the Bosch Maxx washing machine does not turn on, then you first need to figure out whether this is due to faults in the wiring and its individual components, or whether the reason is in the device itself. First of all, the voltage in the network is checked. If it is, then the next step will be to check the power cables, sockets and circuit breakers.
The reason may be a faulty power button. If it sinks or does not move, it must be replaced. Less common reasons are failure of the main chip and control module of the equipment, breakdown of the electric motor or drum.
If attempts to troubleshoot a Bosch washing machine do not lead to stabilization of the operating process and startup, you must contact qualified specialists for further diagnostics.
- Door faults Bosch Maxx 4 can be fixed by replacing the latch. If depressurization occurs or the integrity of the rubber braid is damaged, you should replace it with a new one yourself or in a specialized service. The error code during normal operation may be cleared when the washing machine is restarted.
- Problems with drainage or water supply Bosch Maxx 4 into the system. It is necessary to check the position of the supply and drain valves and open them. If the error continues to appear, the filters need to be cleaned and replaced. If the pressure in the system is too low, check and clean the pipes and replace the water level sensor.
- Long drain Bosch Maxx 4 can be solved by replacing the water level sensor and cleaning the main pump.
- Incorrect water heating, prolonged heating requires checking the thermostat, replacing the heating element, and temperature sensor.
- Drum breakage can be eliminated by loading the correct amount of laundry - frequent overload leads to abrasion of the belts and complete failure of the unit.
Errors associated with partial collection of detergents in Bosch Maxx 4 or Bosch Maxx 6 can be eliminated by cleaning the container. To prevent such malfunctions of the Bosch washing machine, do not load too much powder and leave it inside the machine for a long time (especially important if the device is built in a damp room).
Presence of noise When operating the Bosch Max device, it is necessary to diagnose more carefully. If the noise is periodic and appears at the beginning or end of the operating cycle, then the cause is the presence of foreign objects in the corrugated pipes. It is necessary to remove them as quickly as possible to avoid penetration into the system and the occurrence of short circuits and depressurization of individual elements.
If the noise resembles a metal grinding sound, then this indicates a bearing failure. Quickly replacing them with working ones can prevent complete failure of the electric generator.
Disabling a difavtomat or RCD at startup, it indicates that there is a leakage current in the system (breakdowns to the housing, etc.). It is necessary to check the integrity of the wiring in the house up to the outlet, inspect the household appliance for the presence of exposed wires and moisture getting inside the housing. Self-repair without proper knowledge of electrical engineering is not recommended, since incorrect repair of this breakdown can lead to dangerous situations.
The examples of simple faults listed above using the Bosch Maxx 4 as an example can be diagnosed and fixed at home. If the faults are more complex, you should immediately seek the help of specialists. In such cases, independent intervention in the repair of household equipment such as Bosch Maxx can lead to irreversible failure of the part or the entire system, thereby the cost of repair work can reach the price of purchasing new equipment.
Bosch washing machine repair (video)
The video shows the diagnosis and step-by-step elimination of a spin error on a Bosch machine. Malfunctions of the Bosch Maxx 5, Bosch Maxx 4, Bosch Maxx 6 and other models associated with malfunctions in the spin mode may be associated with a breakdown of the pressure switch, electric motor, as well as malfunctions in the control module, drain pump or device power control sensor (number of revolutions).
In contact with
Bosch washing machines are known for their quality and reliability, however, equipment does not last forever and sooner or later, some kind of malfunction may occur with it. There are a lot of types of washing machine malfunctions, and listing all the reasons for their occurrence, you could write a whole book.
But this doesn’t make much sense, the main thing that an ordinary user needs to know is that, for long and stable operation of the washing machine, you just need to follow the simple recommendations specified in the operating instructions and call a technician at the first sign of a malfunction or “oddities” in work, because eliminating a malfunction at the first sign of its manifestation is usually much easier and cheaper, and sometimes a simple consultation with a specialist over the phone is sufficient.
If your Bosch washing machine breaks down
Even if you follow all the manufacturer's recommendations, for a number of reasons, the washing machine can still fail or simply break down. As mentioned above, there can be a lot of malfunctions, but they all arise for two reasons, the first and most basic is the banal failure to follow operating rules and the second, external factors, that is, bad water, power surges, etc.
What to do if your Bosch washing machine breaks down? Often, many users begin to look for a description of the washing machine error code, if one appears on the display, and, in accordance with the description found, try to repair it themselves. It is strongly recommended not to do this, of course, many have excellent technical knowledge, there are excellent tools and, again, the Internet, where you can see how to fix this or that malfunction, but everything is not as simple as it seems at first glance.
A breakdown of a Bosch washing machine appears as a result of certain factors, for example, if the error code of the washing machine shows a pump malfunction, this does not mean that the pump is not working, the filter may be clogged, there may be a problem with the contact, or the contact may be burnt out due to a clogged filter and the pump tried to drain the water, but maybe it was an error or a malfunction of the module. The error code of a Bosch washing machine, or any other washing machine, will only say so to guide the technician, further actions are performed according to a certain scheme, diagnose the unit, check all connections, find out the cause of the failure, eliminate not only the malfunction itself but also the reason that caused it .
Why you should call a washing machine repairman
To repair any equipment, you need not only specialized tools and spare parts, although this should also be mandatory, but also experience in working with this equipment; you will agree that it is difficult to diagnose a device without knowing all its parameters for normal operation, for example, resistance value, etc. d. Again, you can look on the Internet, but the situations are different: for some, the breakdown of one unit occurs for one reason; for another, the breakdown occurs for another.
Thus, it is not uncommon for self-repairs to involve changing the working parts of washing machines; as a result, the washing machine never starts working, and later fails again due to failure to eliminate the true cause. Also, we receive quite a lot of calls from the technician after an attempt to carry out repairs on our own, when the machine remains disassembled and it is no longer possible to reassemble it, this is due to the fact that washing machines contain some parts, for example a cuff, which are not so easy to put on without some skill, and if you put the cuff on incorrectly, there is a high risk that all the water from the machine will simply spill out during washing, which most likely will not lead to anything good.
Conclusion
If your Bosch washing machine has stopped working, do not experiment, contact the service center, the technicians of the ETekhnik service center have not only all the necessary tools and spare parts, but also extensive experience, any breakdown can be repaired and this can be done quickly and inexpensively .
Here is an example of work performed to repair a Bosch Maxx 5 washing machine that stopped working: 
Request from a client: Bosch washing machine model Maxx 5 does not turn on.
Master's report:
| Type of equipment | Brand, model | Malfunction | Works performed upon request | Price |
| Washing machine | Doesn’t work (indicators are lit after switching on, error code is not displayed, programs do not start) | Diagnostics (No power supply to rotor) | 0 rub. | |
| Replacing motor brushes | 2500 rub. | |||
| Cleaning the engine from graphite deposits (At the request of the client) | 500 rub. | |||
| TOTAL: | 3000 rub. | |||
Bosch brand washing machines are considered one of the easiest to use. Convenience is expressed in the fact that the user, in most cases, can independently correct errors in the Bosch washing machine, having minimal knowledge.
The intelligent system reports faults by displaying them as codes on the display. Let's take a closer look at what they signal.
The devices are represented by such series as Maxx, Logixx, Classixx, Avantixx And Home Professional. The fault codes displayed on the sensor of a Bosch washing machine are, in most cases, the same in all series.
No. 1. Problems with the machine door
Due to the loading hatch not being closed tightly enough, a code appears F01. Immediately make sure that the door is slammed tightly, rearrange the laundry so that it does not interfere with the correct fixation of the hatch (you must clearly hear a click when closing).
The problem may also be a faulty hatch handle, door parts, guide part or locking element. If they break, they must be repaired or replaced.
To correct error F1, it is necessary to check the functioning of all parts of the hatch: fasteners, handle, corresponding lock mechanism and adjacent parts
Code F16 indicates that the wash cannot be started due to the hatch not being closed. In this case, you will need to slam the door and restart the program again.
If the error does not disappear, check the functionality of the door, locking tongue, locking element and, if necessary, update the damaged parts. Check the wiring.
Often problems are found in the door handle. It should be carefully disassembled using a screwdriver and repaired, replacing damaged elements
If the door lock does not slam shut, the screen flashes F34. This is one of the critical errors, so turn off the device immediately. There may be two root causes. The first is that the door does not close, and the second is that the door does not automatically lock.
In the first case, the door does not close or open again, or the hatch cannot physically close (something is in the way). This happens due to the door being skewed due to deformation, or the locking hook does not fit into the special hole, or when the plastic guide is worn out.
To identify the causes of the door malfunction (F34), it is necessary to disassemble it and carefully inspect it, also check the bolts, hinges and locking system
In the second situation, the problem is either a broken blocking element, or a clogged blocking device (debris or small objects have gotten in), or a broken control module (which happens very rarely).
You can fix it by turning off the device. Next, check the lock, hinges and the door itself, the locking system and its wiring. Then, if necessary, parts are repaired or replaced. The module is checked, and if it is burnt out, a replacement is needed, if the software has crashed, then it needs to be reflashed.
Critical error F36 indicates a malfunction of the locking system (broken lock). The reason may be an open hatch or a lack of locking. Restart the machine, check that the door is closed tightly, look at the wiring, hinges, lock and control module. Renew or repair parts.
One of the root causes of error F36 is a faulty blocking element. The part should be carefully inspected, then, if necessary, repaired or replaced
Code F61 indicates that the door has an incorrect signal (it is both open and closed at the same time). This error is critical, so press ON/OFF immediately.
The reason could be a module freeze. To resolve this, do not turn on the device for 30 minutes. At this time, call a technician or check the module, hatch lock (locking mechanism) and wiring yourself.
No. 2. Errors due to water supply problems
Code F02 appears on the display when there is no water. This error can be caused by:
- breakdown of the board, inlet valve or pressure switch;
- incorrect installation of the device;
- the tap supplying water is closed;
- lack of water or pressure in the water supply;
- does not close tightly enough or the hatch does not lock.
You can fix these problems yourself. First, reboot your controller. If this is the problem, then you should rewrite the software or replace the board; in this case, use the services of a specialist.
If not, then you need to check that the machine is connected correctly; the hose should not be pinched. Check the water pressure in the system and the handle of the tap that supplies it.
Clean the inlet filter (rinse the mesh of the hose intended for water supply under pressure). The filter itself is located at the connection point of the inlet hose, at the top of the machine.
Inspect the inlet valve, then the blocker and repair if it is faulty. Check the pressure switch (pressure sensor) and the wiring leading to the sensor for damage. Carry out the same actions with the door.
Code F03 is displayed if there are difficulties with draining the water and there may be several reasons for this error, namely:
- the garbage filter or sewer pipe is clogged;
- the drain hose is clogged or deformed;
- critical stretching or rupture of the drive belt;
- drain pump malfunction;
- problem with the module.
How to eliminate them? First, you should check the drain filter and clean it if necessary. If this does not help, inspect the drain hose for kinks or improper placement.
Reinstall it as needed or clean it with special chemicals. Check, correct or replace the drive belt, and do the same with the pump. It is better to entrust testing of the main board to a specialist.
To correct error F03, you need to clean the water drain filter; to do this, you need to remove it and rinse it under a stream of water. The filter is located at the bottom of the machine behind a small hatch
Code F04 indicates that water is leaking. You must quickly disconnect the device from the power supply to avoid electric shock. Then turn off the water and find the source of the leak (inspect the place where it started first), and also check the tightness of all connections.
There can be several reasons for this problem: a leak in the hose, the drain filter is not screwed tightly, problems with the dispenser, the rubber cuff has torn, the filler pipe in the tank of the device or the tank itself is damaged, the inlet valve pipe has failed, the drain pump is worn out.
A common cause of leaks is damage to the hose or a loose connection to the unit. If damaged, the hose must be replaced
To eliminate it you need:
- inspect the hose, renew if damaged;
- screw the filter plug tighter;
- take out the washing powder bin, rinse, dry, and replace if damaged;
- if the seal is not too damaged, try to repair it; if they are worn out, replace them with new ones;
- in case of serious damage;
- If the tank malfunctions, it should be replaced.
Code F17 occurs if water does not flow. On some models this error may appear as E17.
Its occurrence can be triggered by:
- closed tee tap supplying water;
- water pressure less than 1 atmosphere;
- clogged filter or water supply hose;
- the electronic controller or intake valve does not function;
- The pressure switch stopped functioning.
Removing the error is simple: open the water supply tap, after which the cycle will end, and the pump will drain the water in a couple of minutes. Reboot the electronic board, and if the problem is there, then replace the unit or reflash it.
Clear the strainer and any blockage in the hose if there is one. Check the voltage on the valve coil, as well as the pressure switch, sensor controller and its pipe, change parts if necessary.
When the machine does not draw water for some reason, you should check the inlet valve and water supply hose for damage.
When the water in the washing machine does not drain at the right time, the code flashes F18.
Signs and types of error:
- water may drain slowly due to a program failure, for the same reason the machine freezes before draining;
- irregular drainage (every other time);
- after rinsing there is no drain;
- The laundry is not spun.
This happens due to a clogged “garbage” filter, incorrect installation of the water drain hose (it could be bent), if the pump does not rotate or the controller malfunctions.
Error F18 will appear on the display if the Bosch washing machine has stopped draining water. First, carefully check the water drain hose, then see if the siphon to which the hose is connected is clogged
To solve the problem, reboot the washer. If it doesn’t help, then turn off the power, remove the filter and clean it from the blockage.
Then perform the following steps one by one:
- the hose must be straightened and installed correctly; check the blades (threads or debris could be wrapped around them);
- if the pump is faulty, then replace it;
- check the control unit;
- inspect the wiring connecting the module to other elements; to fix such problems, it is better to call a technician.
When the Aqua-Stop function is triggered, a code appears F23. You immediately need to disconnect the machine from the network, tighten the valve, drain the water, and check for leaks.
The simplest version of the AquaStop system is a pan with a float that shuts off the water supply if a leak is detected.
Also inspect the connecting circuits for breaks, the inlet hose and pipe, the hose with the solenoid valve, and the pressure switch. All of these components need to be replaced in case of breakdown.
If the turbidity sensor does not work (code F25), the program will finish the wash without rinsing. The reason may lie in the formation of limescale on the water sensor, a faulty pressure switch, clogged filler or drain lines if dirty water comes in.
The fill and drain filters need to be cleaned. Replace the aqua filter (turbidity sensor) or descale it. To flush the system, run a wash without any laundry at the highest water temperature. Contact a plumber or install a flow filter yourself. Replace faulty parts.
When the code is displayed F29, this indicates that no water is flowing through the flow sensor. There may be several reasons: the machine is installed incorrectly, the hatch is poorly closed, there is no or weak pressure, the filter mesh is clogged, the fill valve or pressure switch is broken.
First, check the hatch, pressure and straighten the hoses. Then look at the filter, valve and pressure sensor. After eliminating the root cause, the draining process will begin after 5 minutes, then you can resume the interrupted cycle.
Code F 29 indicates problems with the flow sensor; in this situation, a comprehensive check of some machine parts is required
If the permissible amount of water is exceeded (fault code F31), the wash cycle will not complete until the water is drained. This is a critical error; if it occurs, you must immediately unplug the device from the outlet.
It occurs due to illiterate installation and connection of the device, due to a violation of the location of the hose. The pressure switch, water intake valve, pump or controller turn out to be faulty.
Error 31 often occurs due to improper operation of the pressure switch. To troubleshoot problems, you need to test the device and update it if it breaks
To fix it, normalize the position of the hoses, if necessary, install a special valve on the drain hose and turn on the drain mode. If this does not help, then reinstall the machine correctly or check and replace the faulty part.
No. 3. The heating process is disrupted
If there are problems with water heating, the code flashes F19. The reason may be low voltage or voltage fluctuations, scale formation, malfunction of the temperature sensor or board.
The heating element is the cause of several errors in the operation of Bosch machines. It must be carefully removed and cleaned or replaced with a new one.
To resolve this, reboot the device and normalize the voltage. If there are no changes, then it is necessary to check and update the thermostat, heating element and wiring to it. In some cases, cleaning the heating element from scale helps.
Code F20 informs the user that unplanned heating of water has occurred (the temperature is higher than the set one, things are shedding, the device is getting very hot).
The error can be caused by a program failure, a broken thermostat, or a failed heater relay (heater). Each element must be checked and replaced, having first disconnected the device from the network.
When the NTC sensor (thermistor) fails, the display lights up F22.
There may be several reasons:
- the connection to the water supply is broken - not enough water circulates in the system, so there is no heating;
- low voltage in the electrical network or its absence;
- failure of the controller, its wiring or electric heater;
- incorrectly selected washing program;
- failure of the level sensor or thermistor.
To resolve the problem, check the inlet hose and its location. Then - the electronic board; the element may need repair or replacement. The module wiring or electrical circuit may need to be repaired due to burnt contacts. Check the heating element and the functionality of the temperature sensor, update if they break.
Often, the failure of the machine to work and heat water is associated with a violation of the insulation of the internal wiring of sensors and system components. In this case, you will need to disassemble the unit and replace damaged wires.
Test the operation of the pressure switch and if it is broken, replace it. It makes sense to connect a stabilizer that will “save” you from power surges.
Code F37 means that problems with water heating are associated with a breakdown of the NTC sensor. In this case, the sensor itself or its wiring leading to the board could break.
Please note that there are different sensors: bimetallic, gas-filled, electronic. Each of them requires different repairs. Immediately rule out a system failure and check the thermistor, wiring, control board, then replace the necessary parts.
The location of the temperature sensor in a Bosch washing machine is shown and how it can be reached for replacement or inspection
A thermistor short circuit will be displayed as F38 on display. You should immediately turn off the machine from the network. The cause of the accident may be a breakdown of the thermistor, voltage surges, or a malfunction of the module. You should inspect the NTC sensor and check the voltage, first turning off the washing machine from the network.
No. 4. Problems with sensors
If the display shows F26, then the pressure sensor (pressostat) in the machine may be broken, which protects the device from voltage problems; it is also needed to measure the amount of water in the tank.
This is a critical error, you need to fix it like this:
- turn off the washing machine for 30 minutes. (ON/OFF button) to reboot it;
- check how the pressure switch functions;
- check that the connecting circuits are not broken.
If this sensor is not configured, it will display F27. In this case, you need to restart the machine, check the pressure switch, wiring, water pressure and inlet hose. If necessary, correct problems or replace broken parts.
When there is no water filling the tank, it flashes F28. This happens due to a faulty flow sensor. First, reboot your system. Then diagnose the flow sensor, fill valve, and also check the wiring for faults (debris has entered, no pressure). Update faulty parts.
If the flow sensor fails and it produces too high, or, conversely, low value, then you can see the code on the display F60. The cause may be low or high pressure in the water supply, problems with the fill valve, lack of water in the system, failure of the level sensor or circuit board, breakdown of the blocker or heater, or problems with the drain pump.
If the reason for the washing machine failure lies in a malfunction of the inlet hose and valve, they need to be replaced with new parts
Check that the wiring, flow sensor, and filter in the fill valve are functioning properly. If there is a problem with the plumbing, it can be easily solved on your own or by inviting a specialist. In other situations, it is necessary to check all specified parts and replace them.
Code F59 appears when the 3D sensor is not functioning and a measurement error occurs. The reason is a module error, the electronic board cable is coming off, the sensor is burned out or faulty.
In such a situation, you must first reboot the device, then check the correct position of the magnet, wiring and 3D sensor of the device, module and troubleshoot.
The reason for the malfunction of the sensor system may be a failure in the connection to the washing machine’s control unit. You can fix it yourself
No. 5. Incorrect drum rotation
Unrealistic engine speed that cannot be controlled causes the code to appear. F42. The error is critical, so reboot the device using the Power button and check the module.
Also F42 may occur due to a damaged TACH sensor (controls the speed of the device), due to a breakdown of the engine, or a malfunction of the triac on the board. The problem can be corrected by replacing the speed sensor, repairing the engine and its wiring or a section of the electronic board.
If the motor is blocked and the drum does not rotate at all, then the code is visible F43. This critical error occurs due to laundry getting stuck between the drum and the tub.
To fix it, you need to:
- restart the machine;
- see if the laundry loading limit has been exceeded;
- check the serviceability of the TAKH generator;
- Verify that the module and wiring are functioning correctly.
This error requires immediate repair. Therefore, check the drum and internal parts of the device, and replace them if necessary.
If the problem is in the motor, then you cannot use the washing machine, as this can cause a short circuit and fire. If error F43 occurs, immediately unplug the machine to avoid an accident.
When there is no rotation only in the opposite direction, you can see F44. The error is critical, so you need to enable a restart, and then check the module and parts responsible for rotation.
A malfunction can be caused by a failed triac, an imbalance of the drum, an overloaded tank or a broken reverse relay. It is necessary, after testing first, to replace the triac on the board, relay or controller.
No. 6. Engine malfunctions
Behind the code F21 a motor breakdown is hidden, since the rotation of the drum depends on it. When you see this code, you must immediately stop washing, unplug the device, drain the water, remove the laundry, wipe the inside of the drum and call a technician.
The following may be to blame for this error:
To resolve, check the drive belt for breaks - it may need to be corrected or updated.
The integrity of the drive belt is the key to the smooth operation of the washing machine engine. It should be checked for damage and tears.
Inspect the wiring and control unit, wires and contacts - sometimes the module may need to be replaced. If the machine operates on a commutator rather than a direct-drive motor, then its important part – the carbon brushes – could be damaged. They cannot be repaired and require replacement.
Carbon brushes are one of the key parts of the Bosch machine engine; if any faults are detected, replace them with new ones.
If there are problems with the operation of the motor, a critical error occurs E02. Turn off the device immediately, otherwise there is a risk of fire in the wiring or motor and call a technician. He will check whether the graphite brushes of the engine, the motor, its resistance, connecting contacts, key modules, as well as engine modules, and the TAKH sensor are in good condition.
No. 7. Software malfunctions and system protection
Code F67 indicates a breakdown or overheating of the card (controller). Reboot the machine immediately. If the code appears again, then there may be an error or failure in the card encoding between the power and control modules.
It is necessary to call a specialist to replace it with a new working part or reprogram the module. Repairing the card is possible if the processor is fully functional.
Thanks to the control module, all the electronics of the washing machine work; sometimes it can freeze. Therefore, if any errors occur, first reboot the system by turning it off for 30 minutes
Code E67 visible if the washing machine module has failed. The error may be displayed due to unstable voltage, faulty wiring or network fluctuations, breakdown or burnout of key parts (capacitors, triggers, fuses) or erratic pressing of control panel buttons.
If the module overheats, to reboot it, unplug the machine from the outlet for 30 minutes. When the voltage stabilizes, the code should disappear. Those with technical skills will be able to independently repair the card and replace the board, reprogram the controller, otherwise call a specialist.
To repair the controller yourself, you need to have certain technical skills. If you are not confident in your abilities, then call a specialist
When the machine's functional protection is triggered, the display shows F63. The error may occur after a short circuit. The cause may be a software malfunction or a processor failure.
To fix it, you need to reset the program by turning ON/OFF, then see how the module works. Code F63 not displayed - everything is fine. Otherwise, you should call a specialist to conduct a full diagnosis and find out the cause of the problem.
Critical error F63 occurs if functional protection is triggered. If our advice does not help, you should call a specialist to diagnose the problem.
There may be several such reasons. Most often, the machine can knock out traffic jams or an automatic machine. This occurs due to a breakdown of the heating element, the “Start” button or the engine. The root cause of element failure lies in high humidity or oxidized contacts; they are the ones that knock out the plugs or the machine.
If the machine does not start and displays F40, this means that there was a failure in the power supply network. In simple words, the washing machine does not start.
This error may occur when:
- voltage below 190 W;
- if traffic jams or a machine breaks;
- RCD is triggered;
- the cord, plug, socket is broken or the interference filter is damaged.
The cause may also be a broken start button or board.
In case of breakdown, do not get lost. You need to sensibly analyze the situation using our recommendations, and also study the instructions with tips. And having knowledge about all the malfunctions in Bosch machines, you can easily cope with them.
If you have personal experience troubleshooting a Bosch washing machine, please share it with our readers. Tell us what kind of breakdown you encountered and how you fixed it. Write your comments, ask questions - the contact block is located under the article.
In this article we will tell you how to repair Bosch washing machines yourself. Find out how to fix minor and moderate damage without calling in a professional.
Bosch washing machines attract attention and deserve the respect of customers due to their high quality and abundance of innovative technologies. The German assembly fully justifies the price of such washing machines - high-quality materials are used in production, and the developers give preference to ergonomic shapes. But even with the highest quality equipment, breakdowns are not excluded.
Diagnostics of a Bosch washing machine is a built-in function in all modern machines. Thanks to it, you can determine the essence of the breakdown without calling the workshop. If you did not find in the instructions a step-by-step description of how to carry out the diagnosis yourself, we will describe in detail how to do this:
Attention! Rotate the selector only to the right.
Important! If the diagnostics do not start, then the problem is in the control board (electronic controller), and in this case you cannot do without calling a technician.
If you decide to manually check individual parts, turn the selector wheel to select the desired item. Proceed this way:
- Engine check: position 3.
- 4 - for testing the pump.
- 5 - check the heating element.
- 6 - hot water intake valve.
- 7 - cold water intake valve.
- 8 - water intake valve for the main wash.
- 9 - pre-wash water intake valve.
- 10 - sound signals.
- 11 - FCW autotest.
- 14-15 - “quick” autotest.
To exit the program test mode, press “START” and turn the wheel.
To exit diagnostic mode, turn the wheel to the “OFF” or “OFF” mark.
Of the entire huge list of malfunctions of a Bosch washing machine, the following malfunctions are the most typical for this brand:
- The water does not heat up when washing.
- No drain.
- The tank does not spin.
- The drum is noisy.
- No water intake.
- The engine doesn't work.
Based on this list, we come to the conclusion that the most vulnerable point of washing machines of this brand is the heating element. If the thermoelectric heater burns out, but the controller is intact, then repairing a Bosch washing machine does not take much labor and effort. Otherwise, the controller needs to be replaced, and this work is best left to a specialist.
Users will learn about certain malfunctions by fault codes (or flashing lights). The following error codes usually appear in Bosch SM: F01, F16, F29, F31, F34, F36, F40, F61, F63, as well as E02 and E67 and others.
Causes of breakdowns
The design of the Bosch washing machine determines both the nature of the breakdowns and the causes of their occurrence. Let's look at what usually causes failures.
After washing, waste water remains in the tank. This happens for the following reasons:
- Failure of the drain pump (pump).
- There is a blockage in the filter or pump.
- Pump contacts are burnt out or oxidized.
- The pressure switch is broken.
If the drum is stuck tightly, this may be due to the following reasons:
- The drive belt is damaged.
- Electronics malfunction.
- Less often - engine failure.
Drum noise is associated with:
- Broken bearings (the bearing in the Bosch washing machine will need to be replaced).
- Litter and foreign objects in the tank.
- Loose or broken shock absorbers.
- Torn out counterweight.
Water does not flow into the drum because:
- There is no water in the water supply system, low pressure.
- The pump or the Aqua-Stop system is clogged.
- Kink in the drain hose.
Engine failure coincides with the following “symptoms”:
- Open hatch.
- Controller failure.
Having determined what caused the malfunction and assessed its complexity, you can begin repairing Bosch washing machines yourself.
If you have not identified the breakdown and do not know how to repair the washing machine, contact a specialist.
The listed causes of breakdowns are most typical for the Bosch Classic 5, Bosch Maxx 5, Bosch Max 4, Bosch Maxx 6 models, but other models can also fail for the same reasons.
Below we will look at malfunctions and ways to resolve them, paying attention to the most common failures and the best ways to solve them.
Having determined that the drain pump (pump), drain filter or water level sensor (pressure switch) needs repair, we carry out the repairs ourselves - this does not require special knowledge or effort.
To unclog the filter, we proceed according to the following scheme:
To clean or replace the drain pump (pump), you need to properly remove the front panel; To do this, you may need the instructions for your brand of Bosch washing machine. In principle, nothing complicated, but you need to make an effort.
- Remove the detergent dispenser.
- Unscrew the bolt in the lower right corner.
- Remove the bottom panel by unscrewing the bolt near the filter and the bolts at the bottom of the panel.
- Remove the rubber cuff of the hatch (to do this, you need to remove the fixing ring by bending the small spring with a slotted (minus) screwdriver).
- Remove the panel.
To get to the pump itself, remove the UBL wires. Remove and disassemble the pump - there may be foreign objects and debris in it. The impeller in a working pump rotates easily in all directions.
Check the pump winding resistance. If it is 200 Ohms - order. If the values are different, there is a breakdown and the pump needs to be replaced.
If water does not fill up, you need to:
- Check whether the machine is connected to the water supply (if not, open the valve).
- Inspect the drain hose (there may be kinks and kinks on it).
- Check the AQUA-STOP filter. If there are problems with it, you need to replace it with a new one.
If the water level sensor breaks down, we replace it according to the following scenario:
Replacing the heating element with your own hands
If the heating element has exhausted its service life or is overgrown with scale, overheated and burned out, it needs to be replaced. This work can be done independently. But first you need a check.
If you are not sure whether the heating element is working or broken, you can check it yourself, armed with a tester. The check is carried out as follows:
- Without removing the heating element, disconnect the wiring.
- Set the tester to resistance measurement mode (in Ohms).
- Set the adjuster wheel to “200”.
- Attach the probes to the electric heater terminals.
- Normal resistance usually ranges from 20 to 40 ohms.
- If the tester display shows “1”, then a break has occurred and the heating element needs to be changed.
- If the value is about “0”, there is a short circuit in the heating element, the heater needs to be changed.
Finding the heating element is simple: remove the back panel of the SMA and below the drum you will see the heating element, or rather its shank, with a screw driven in the center. We make a replacement:
- Unscrew the bolt.
- Carefully remove all wires.
- Remove the heater by slowly loosening it from side to side and pulling it towards you.
- Take a working heating element and install it.
Replacing bearings yourself
To carry out this complex operation, almost complete disassembly of the SM is required. If you decide to do this, do not completely remove all the wires from the electronic module - it is not a fact that you will be able to connect everything in place. After dismantling the module, place it on the frame or hang it on a special hook.
Making a technological hook
To make a technological hook with your own hands, take a 30-centimeter piece of unheated steel wire with a diameter of 3 mm or more. You need to thread a cambric (heat shrink) onto the wire, which should be longer than the wire - at least 1 cm on each side. Make bends, stepping back 6-7 cm from each end of the wire - you will get something like a hook. Hang the dashboard on this hook.