We will look at what the F42 error in the Bosch washing machine means, the causes and signs of its occurrence, and how to fix the malfunction with our own hands.
In the event that the Bosch machine gives an error, the CMA control system tries to notify the user of the problem. Do not panic and immediately call the workshop. You may be able to fix the situation yourself.
Description, symptoms and causes of the error
The Bosch washing machine shows F 42 on the display if the motor runs at too high a speed.
Important! This is a critical error. Disconnect the machine urgently, as a short circuit and even fire of the SM are possible!
A sign that will help confirm the error: the machine rotates the drum strongly and at the same time jumps.
Reasons for exceeding engine speed:
- Breakdown of the RPM pressure sensor (tacho).
- Damage to the electric motor.
- Failure of the triac of the control unit.
Machine repair with error F42
Specialists from domestic service centers are well aware of what to do if error codes such as F42 occur. In this case, they carry out the following repairs (depending on the cause of the breakdown):
- Change the tachometer.
- Repair the electric motor.
- Restore the integrity of the engine wiring.
- Repair or change the control unit.
Self check
To make sure that the washer does not show the error code correctly, try these simple steps:
- Disconnect the Bosch washing machine from the power supply.
- Give her a “rest” for 15-20 minutes.
- Turn on the washer.
If the error still lights up on the scoreboard, solving the problem requires radical action and a comprehensive repair. Experts are to entrust the diagnosis and repair - they know very well what the F42 error means and how to fix the situation.
If you are still a fan of self-repair, and want to reset the errors yourself, you have serious work ahead. You will need the electrical circuit of the Bosch washing machine, a tool and a lot of knowledge and experience.
Other reasons why the machine jumps
Perhaps your washing machine does not give trouble codes, but it still jumps. Other reasons may be involved in this:
- Problems with springs. If the springs holding the tank lose their elasticity, they need to be changed - it is impossible to stop jumping in another way. If any master is envious of your repair skills, and there is a set of tools at hand, you can cope with the repair yourself.
- Depreciation of shock absorbers and dampers. Masters recommend changing both shock absorbers at once, even if only one is worn. Having saved on one of them, then you still spend money on replacing the second, since over time the machine will still start jumping.
- Counterweight problems. If the mounts loosened on the counterweight, then simply pull them up. And if the integrity of this element is violated, then it needs to be replaced.
- Bearing wear. Due to high humidity, these critical elements can rust. Self-replacement of bearings is a very complicated procedure requiring skills, efforts and special tools. Better contact the workshop.
- Incorrect installation. If the machine is installed on an uneven surface, it may jump. During installation, you need to install the SM on a hard rubber mat, if the floor is not perfectly flat. To install the machine correctly, use the level and adjust the legs.
- Improper transportation can also be one of the reasons that CMA knocks and jumps.
- After transportation, they forgot to remove the transport bolts - the problem concerns only new machines. If you refused delivery from the store and decided to bring and install the CM yourself, you might not have known about the existence of these bolts.
- Incorrect loading of laundry into the drum. If the laundry got stuck when washing in one huge lump, then any, even serviceable machine, jumps. Stop washing and distribute the laundry.
Now you know how to stop the jumps of the Bosch washing machine. If nothing helped to remove the error, and F42 still appeared on the screen, do not hesitate, call the master - maybe a serious repair is required.