How to change the tachogenerator in a washing machine

faulty tachometer The tachogenerator is a small and inconspicuous part, but very important. It is she who monitors how many revolutions per minute the washing machine motor makes and transmits information about this to the control module. If there is something wrong with the element, the machine will refuse to wash and will display an error code. How to replace the tachogenerator in a washing machine yourself?

Where to look for a faulty part?

If your washing machine has a commutator motor, the tachogenerator will be located on the rotating motor shaft. To get to the engine, you need to remove the fasteners from the rear cover of the SM, pry it off with a screwdriver and remove it, and then remove the drive belt. Naturally, before starting work, you need to disconnect the unit from all communications.

The tachogenerator looks like a metal ring with two wires on the motor shaft. Sometimes, in order to dismantle the tachogenerator, you have to remove the engine itself. How to proceed? How to remove a Zanussi engine

Remove all engine wiring.
Unscrew the screws holding the motor.
We move the motor housing back so that it seems to jump off the guides. After that, it will be right in our hands.

Keep in mind that the engine is quite heavy and can easily be dropped when removed.

Important! Before dismantling the unit, check the spin control button. If it has sunk inside, the problem may lie there, and not in the tachogenerator.

Do we test and change the part?

After the part is dismantled, you need to carefully inspect it and the wiring. If you see that any fastening is not held securely, it must be tightened immediately. All latches and contacts must be intact.What to do if no obvious damage is found? Then you need to test the tachogenerator. There are two ways to do this.

First way:

take a multimeter and set it to measure ohms;
attach the probes to the tachogenerator contacts;
Normally, the sensor resistance should be 60 ohms.

Second way:

set the multimeter to measure volts;
connect the probes to the contacts;
with your second hand, accelerate the engine;
if the number 0.2 appears on the display, it means the sensor is ok.

Replacing a damaged part is easy. To do this, completely remove the wiring and the element cover, which is secured with a regular latch. Unscrew the fasteners, remove the old tachogenerator and install a new one in its place.

Error codes indicating the tachogenerator

Masters sometimes diagnose a breakdown of the tachogenerator even before the inspection. There is no magic or professional trick here, they simply correctly interpret the error code displayed on the display. Error codes for different washing machines for the same phenomenon may vary. Let's figure out how different SM models signal exactly about problems with the tachogenerator. Error F06 in Whirlpool washing machine

Whirlpool - code F06;
Indesit – code F02;
Kandy – codes E7 E8 or E9;
Samsung - code 3E;
LG – code SE;
Bosch - code F42;
Atlant – code F9;
Gorenje – code F4;
Beko – code H6;
Mile - code F53.

Don't be too quick to rely entirely on the error code. In some models, the same combination can have two or even three meanings. However, if you suspect a tachometer, you will at least know which element to test first. The ability to carry out diagnostics with your own hands already saves the user’s energy and time, not to mention self-repair.