Details: bosch wfb 1070 do-it-yourself repair from a real master for the site my.housecope.com.
In this article we will tell you how to independently repair Bosch washing machines (Bosch). Learn how to fix minor and moderate damage without resorting to the services of a master.
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 the manufacture, and the developers prefer ergonomic shapes. But even among the highest quality equipment, breakdowns are not ruled out.
Bosch washing machine diagnostics 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 diagnostics yourself, we will describe in detail how to do this:
Close the loading door.
Set the program selection wheel to "OFF".
Wait a couple of seconds.
Set the selector to the "SPIN" mode.
If you have done everything correctly, the "START" light will flash.
Press the "SPIN RPM" button and do not remove your finger until the "START" indicator flashes again.
Turn the wheel again, this time stopping it on the DRAIN program.
Attention! Rotate the selector only to the right.
After releasing the "SPIN RPM" button, select the object to be tested by turning the wheel. Or determine the breakdown by the error code displayed on the scoreboard.
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 the wizard.
Video (click to play).
If you decide to manually check individual parts, turn the selector wheel to select the desired object. Proceed like this:
Check engine: 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.
Next, press "START" again (in addition to this indicator, "DRAIN" and "SPIN" are also lit) to start the program test.
To exit the program test mode, press START and turn the wheel.
To exit diagnostic mode, turn the wheel to "OFF" or "OFF".
Of the entire huge list of malfunctions of the Bosch washing machine, the most typical for this brand are the following failures:
When washing, the water does not heat up.
No plum.
The tank is not spinning.
The drum is noisy.
There is no water intake.
The engine doesn't work.
Based on the specified list, we come to the conclusion that the most vulnerable spot of the washers of this brand is the heating element. If the thermoelectric heater burns out, but the controller is intact, then repairing the Bosch washing machine does not take much work and effort. Otherwise, you need to replace the controller, 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.
The device of the Bosch washing machine determines both the nature of the breakdowns and the causes of their occurrence. Consider what usually causes crashes.
After washing, waste water is in the tank. This happens for the following reasons:
Failure of the drain pump (pump).
Clogged filter or pump.
Blown or oxidized pump contacts.
The pressure switch broke.
If the drum is firmly stuck, this may be due to such reasons:
Drive belt damaged.
Failure of the electronics.
Less often - engine failure.
Broken bearings (you will need to replace the bearing in the Bosch washing machine).
Rubbish and foreign objects in the tank.
Loose or broken shock absorbers.
Ripped counterweight.
Water does not enter the drum because:
There is no water in the water supply system, low pressure.
The pump or Aqua-Stop system is clogged.
Drain hose kink.
Engine failure coincides with the following "symptoms":
Having determined what caused the malfunction, and evaluating its complexity, you can start self-repairing Bosch washing machines.
If you have not identified a breakdown, and do not know how to repair a washing machine, contact a specialist.
The listed causes of breakdowns are most typical for Bosch Classic 5, Bosch Maxx 5, Bosch Max 4, Bosch Maxx 6 models, but other models may fail for the same reasons.
Below we will look at malfunctions and how to fix them, paying attention to the most common failures and the best ways to solve them.
Having determined that a drain pump (pump), a drain filter or a water level sensor (pressure switch) needs repair, we carry out repairs ourselves - this does not require special knowledge and effort.
To eliminate clogging of the filter, we act according to the following scheme:
Let's find the drain filter: it is located at the bottom of the washer body, under the front panel (you can get it from below by putting the machine on its side) or behind the door of a small technical hatch.
It is necessary to lay a rag or substitute a container - the remaining waste water will gush out of the hole.
Turning the filter cover to the left, remove it.
We clean the filter and rinse it under the tap.
We install in place. Remember that it is IMPOSSIBLE to run CM without a filter.
To clean or replace the drain pump (pump), you need to correctly remove the front panel; to do this, you may need the instructions for your brand Bosch washing machine. In principle, nothing complicated, but you need to make an effort.
Take out the detergent drawer.
Loosen 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, remove the fixing ring by bending a small spring with a slotted (minus) screwdriver).
Remove the panel.
To get close to the pump itself, remove the UBL wires. Remove and disassemble the pump - it may contain foreign objects and debris. The impeller in a working pump rotates easily in all directions.
Check the resistance of the pump winding. If it is 200 ohms - order. If the values are different, there is a breakdown, and the pump needs to be changed.
If water is not collected, you need:
Check if the machine is connected to the water supply (if not, open the valve).
Inspect the drain hose (it may have creases and kinks).
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, change it according to the following scenario:
We find the sensor by removing the top cover of the car - you will see it in the right corner if you look at the car from the front. To remove the cover, twist 2 bolts.
By pressing the latch, we remove the sensor. We remove the wires and disconnect the pipe by opening the clamp.
We install the new unit in place of the old one, acting in the same way, but in reverse order.
If the heating element has worked out its resource or is overgrown with scale, overheated and burned out, you need to change it. This work can be done on your own. But first you need to 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 the resistance measurement mode (in ohms).
Set the governor wheel to "200".
Attach the probes to the terminals of the electric heater.
Normal resistance usually ranges from 20 to 40 ohms.
If the value of the tester is “1”, then a break has occurred, and the heating element needs to be changed.
If the value is near “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:
Loosen the bolt.
Remove all wires carefully.
Remove the heater by slowly loosening it from side to side and pulling it towards you.
Take a working heating element and install it.
To carry out this complex operation, almost complete disassembly of the SM is needed. 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, lay it on the frame or hang it on a special hook.
To make a technological hook with your own hands, take a 30-centimeter piece of non-hardened steel wire with a diameter of 3 mm or more. A cambric (heat shrink) should be strung on the wire, which should be longer than the wire - at least 1 cm on each side. Make bends, stepping back from each end of the wire 6-7 cm - you will get a kind of hook. Hang the dashboard on this hook.
We remove the tank with the drum by unscrewing the springs.
When disassembling the tank into 2 parts, the specially provided latches must be broken.
Using a hammer and a piece of wood, carefully knock out the bearing axles with light blows.
When choosing new bearings, make sure that the parts match your brand of washer. For example, you need bearings for a Bosch Max 5 washing machine - say so in the store so as not to buy the wrong parts.
The video shows how the master disassembles the Bosch machine and changes the bearing. See if you need this:
As you can see, do-it-yourself Bosch washing machine repair is a doable task. Just remember to periodically clean your washer and maintain it to keep it from breaking down.
Household appliances from Bosch have earned the love of customers for their quality. German-assembled washing machines are admired, ranging from the quality of the materials used for the production of machines and ending with their ergonomics. However, even among this equipment there are instances of machines that fail. That is why, we decided to write an article on how to repair Bosch washing machines on our own, and whether it is possible to do it.
Modern models of machines from Bosch are equipped with a special program that allows you to identify equipment malfunctions without contacting the master. The instruction manual probably tells how to properly perform such a diagnosis. If not, then we offer a detailed algorithm for testing machines, in the case when the drum has stopped rotating:
Close the hatch door of the machine drum.
Set the program selection knob to the off position.
We are waiting for 2-3 seconds.
Now turn the knob to spin mode.
We wait until the "Start" button on the control panel of the machine flashes.
Hold down the "Spin" button.
We wait until the "Start" button flashes again.
Turn the knob to the "Drain" mode. Important! Rotate the knob clockwise.
Release the "Spin" button.
By the error code of the Bosch machine, we determine the last malfunction.
For your information! If the diagnostics of the washing machine did not start at all, then there is a malfunction in the system board.
In addition, the program provides for the removal of the last error from memory and the launch of diagnostics of faulty elements. To start the engine check, you need to set the mode selector to position 3. When the handle is set to position 4, the drain pump will be checked, and the heating element will be checked in position 5. Positions 6 and 7 are provided for diagnosing hot or cold water inlet valves, in position 8 the testing of the water inlet valve will begin during the main wash, 9 - pre-wash.
The masters of Bosch service centers found that of all the possible breakdowns of washing machines, Bosch machines most often have the following malfunctions:
Water does not heat up during washing.
Water does not drain.
The drum does not rotate.
Noise inside the drum.
No water is drawn.
The engine does not start.
Based on this list, it can be concluded that in washing machines of this company, the heating element most often burns out. If the heating element burned out, and at the same time the electronic system remained intact, then the repair will be carried out quickly and safely. Otherwise, you will have to change expensive electronic modules, giving the technician to the master.
What malfunctions can occur in a washing machine, everything is clear. And what can cause a breakdown, you need to find out. Let's deal with everything in order.
If the machine does not drain the water after a wash cycle, then the reasons for this may be:
breakdown of the drain pump (pump);
clogged drain filter or pump;
contacts between the pump and the power supply are faulty;
The water level sensor has failed.
In the case of a drum stop, the most important reasons are:
drive belt wear;
malfunction of the electronics or control board;
very rarely in such machines the engine breaks down.
Noise inside the drum can be caused by:
defective bearings;
a small object stuck in the drum;
breakage of shock absorbers;
detached counterweight.
When water is not drawn into the tank of the washing machine, the following reasons are distinguished:
lack of running water;
blockage of the pump or Aqua stop system;
there was a blockage in the drain hose.
The Bosch washing machine engine may not start due to a broken electronics or an open drum hatch door. Having found out the cause of the breakdown and its severity, you can begin to repair it yourself.
If the breakdown is still not determined, we turn to the master.
Now we will describe in detail what malfunctions can be fixed with our own hands, how to repair the car. Let's start with the simplest - clogged drain filter. It is located at the bottom, under the panel or cover. To rinse it from accumulated debris, you need to open the lid by gently turning it counterclockwise. Don't forget to put a large rag underneath so that the remaining water doesn't spill onto the floor. Rinse the filter under running water and reinstall.
Cleaning or replacing the drain pump will not do without removing the front cover of the machine body. This process is simple but labor intensive. This work is described in detail in the article on how to repair a pump in a washing machine.
With your own hands, you can eliminate the malfunction associated with the fact that water is not collected. To begin with, we check whether the water supply is turned off and whether the water supply valve is open. Then the drain hose is inspected for creases, and only after that can the Aqua Stop filter be checked. If it is not working, then it is necessary to replace it with a similar one.
If the water level sensor is broken, then it must be replaced. The sensor is located under the top cover in the right corner. To remove the cover, just unscrew the two screws on the back. The sensor itself is pulled out by pressing the latch. Then the hose is removed and the contacts are disconnected. A new one is installed in place of the faulty water level sensor.
How to change the heating element if it breaks? Such a malfunction can also be fixed by hand. Opening the back cover of the washing machine, below, under the tank, you can see Ten. To replace it you need:
Unscrew the bolt holding the heater on the tank.
Disconnect all wires.
We take out the ten.
We take the correct ten.
We collect everything in the reverse order.
More difficult is the work of replacing bearings in a Bosch washing machine. After all, you have to almost completely disassemble the washing machine to get to them. In addition, you will need tools and skill. A detailed video has been made about this. All the works in it are made by real masters.