What Does Error Code E52 Mean on an Electrolux Washing Machine?
Power off the machine at the wall, wait 10 minutes, then restart a short cycle to reset the motor control board and clear any temporary signal fault (takes about 5 minutes).
Fault description
Error code E52 means your Electrolux washing machine has lost communication with the tachogenerator — the small sensor attached to the motor that measures how fast the drum is spinning. Without this signal, the machine's control board has no way to regulate drum speed, so it stops the cycle and displays E52 as a safety measure.
When this error appears, the drum will typically stop mid-cycle or fail to start spinning at all. You may notice the machine pausing during the wash or spin phase, or it may refuse to progress past a certain point in the programme. In some cases the drum moves briefly then halts as the board detects the missing signal.
The fault can stem from a simple electrical connection issue or point to a worn component inside the motor assembly. Working through the checks below in order will help you identify whether this is something you can resolve at home.
Causes
- Faulty or worn tachogenerator — The tachogenerator is a small coil and magnet assembly mounted on the motor shaft. Over time the coil winding can break down or the magnet can weaken, causing it to stop producing a reliable speed signal.
- Loose or damaged wiring between the tachogenerator and control board — The wiring harness connecting the tachogenerator to the motor control board can work loose due to vibration, or individual wires can chafe and break. Even a partial disconnection is enough to interrupt the signal completely.
- Worn motor brushes — Many Electrolux washing machine motors use carbon brushes to transfer current to the rotor. When these brushes wear down, the motor runs erratically or not at all, which can prevent the tachogenerator from generating any signal.
- Failed motor control board (TRIAC or module) — The motor control board processes the tachogenerator signal and drives the motor. If a component on the board — such as a TRIAC — has failed, the board may be unable to read the signal even if the tachogenerator itself is working correctly.
- Seized or mechanically obstructed drum — If the drum cannot rotate freely due to a foreign object trapped between the drum and the tub, or a failed drum bearing, the motor stalls and the tachogenerator produces no signal, triggering E52.
Step-by-Step Fix
- 1
Reset the machine
Switch the machine off at the wall socket and leave it unplugged for at least 10 minutes. This allows the motor control board to fully discharge and can clear a temporary signal glitch. Plug back in, select a short cotton cycle, and observe whether E52 returns.
- 2
Check the drum rotates freely by hand
With the machine unplugged, open the door and try turning the drum slowly by hand. It should rotate with moderate resistance but no grinding, scraping, or hard stops. If you feel or hear anything unusual, check for coins, bra wires, or other objects trapped between the drum and the door seal or tub.
- 3
Inspect the tachogenerator wiring connections
Remove the back panel of the machine (usually held by three or four screws). Locate the motor — it sits at the bottom of the machine connected to the drum by a drive belt. The tachogenerator is the small component clipped to the rear of the motor with two thin wires. Check that the connector is fully seated and that neither wire is broken, burnt, or corroded. Reseat the connector firmly.
- 4
Test the tachogenerator with a multimeter
Disconnect the tachogenerator connector and set your multimeter to resistance (ohms). Place the probes on the two tachogenerator terminals. A healthy tachogenerator typically reads between 80 and 170 ohms depending on the model — check your model's service data if available. A reading of zero (short circuit) or open line (OL) indicates the tachogenerator has failed and needs replacing.
- 5
Inspect and measure the motor brushes
The carbon brushes are usually accessible from the sides of the motor body and are held in place by plastic or metal holders. Remove each brush and measure its length — brushes shorter than approximately 5 mm are considered worn and should be replaced as a pair. Worn brushes are a very common cause of E52 on older machines and are an inexpensive fix.
- 6
Check the drive belt
While the back panel is off, inspect the drive belt that connects the motor pulley to the drum pulley. A snapped, stretched, or slipped belt means the drum cannot turn even if the motor runs, which will prevent any tachogenerator signal. Replace the belt if it shows cracking, fraying, or excessive slack.
- 7
Examine the motor control board
With the machine unplugged, locate the motor control board (often mounted near the motor or on the rear panel). Look for any visibly burnt components, scorch marks, or swollen capacitors. If you find obvious damage, the board will need to be replaced. Board testing beyond visual inspection requires specialist equipment and is best left to a service technician.
Affected models
Select your model to see its full troubleshooting page.
When to call a service technician
If you have replaced the tachogenerator and motor brushes, confirmed all wiring connections are secure, and the E52 error still returns, the fault is most likely inside the motor itself or on the motor control board. Both components require specialist diagnostic tools to test accurately, and incorrect board replacement can cause further damage to the machine.
You should also call a service technician if the motor produces a burning smell, makes loud grinding noises, or if you notice any scorching around the motor control board. These signs suggest an electrical fault that carries a safety risk and should not be investigated further without professional equipment.
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Frequently Asked Questions
Can I still use my washing machine while it shows E52?
No. When E52 is active the machine has stopped the cycle because it cannot control drum speed safely. Running it in this state risks damaging the motor or control board further. Resolve the fault before using the machine again.
How much does it cost to replace a tachogenerator on an Electrolux washing machine?
A replacement tachogenerator typically costs between £10 and £30 for the part. If you fit it yourself the total cost is just the part. A service technician call-out will add a labour charge on top, usually bringing the total to £80–£150 depending on your location.
How do I know if it's the brushes or the tachogenerator causing E52?
Test the tachogenerator with a multimeter first — it's the quickest check. If the resistance reading is within the normal range, move on to inspecting the brushes. Worn brushes often produce a burning smell or visible carbon dust around the motor body, which is a strong indicator they are the cause.
Will resetting the machine permanently fix E52?
A reset will only fix E52 permanently if the fault was caused by a one-off electrical glitch. If the error returns after the reset, there is an underlying mechanical or electrical fault that needs to be identified and repaired. Repeated resets without fixing the root cause can mask a worsening problem.
Is E52 the same as E51 on Electrolux machines?
They are related but different. E51 typically indicates a motor control board fault or a short circuit in the motor circuit, while E52 specifically points to the absence of a tachogenerator speed signal. The diagnostic steps overlap — particularly checking wiring and the motor — but E52 directs you to focus on the tachogenerator first.