Aeg L-72850M Error E52. Motor Makes Noise And Refuse To Move
Hello.
I have a washing machine AEG L-72850m washing machine that is throwing error code 52. The PNC is 914525614 (01).
The motor does not spin. When it tries to do it, there is a sound that comes from it. You can check it here:
I have checked the tacho and I get voltage when turning it by hand (low, but it shows). Checking the motor on pin 1 to pin 2, pin 1 to pin 3 and pin 2 to pin 3 gives a reading of 6,5 ohms.
Pin 4 and pin 5 gives a reading of about 180 ohms.
What could I check next?
Solution Summary
AI-generated from this discussion
This thread was marked as solved. Here's a summary of the problem and the fix, generated from the discussion below.
AEG L-72850M showing E52 with motor humming but not turning
- The problem
- AEG washing machine L-72850M, PNC 914525614 (01), reports error E52. The motor would not spin and only made a noise when attempting to start.
- Likely cause
- The discussion most strongly supports a fault in the motor feedback/tacho circuit area or motor drive system. The accepted reply says worn motor carbon brushes are a common cause of this symptom, but wiring, the tacho magnet/coil, commutator condition, or the motor control board could also be responsible. No single failed part was confirmed.
- What fixed it
- Recommended checks were to inspect the motor carbon brushes, examine the commutator for burning or uneven wear, recheck the tacho coil and ensure the tacho magnet is secure, and inspect the motor wiring loom and connectors to the control board. If those items were sound, the accepted reply suggested the motor control/inverter board as the next likely area. The exact repair was not confirmed in the thread.
- Checks to try
- Error code E52 reported
- Motor hums/makes noise but does not spin
- Tacho produced a small voltage when turned by hand
- Motor resistance measured about 6.5 ohms between pins 1-2, 1-3 and 2-3
- Tacho measured about 180 ohms across pins 4-5
- Parts or tools mentioned
- Motor carbon brushes
- Motor control/inverter board
- Wiring loom
- Tacho coil
- Tacho magnet
Safety: Further diagnosis should be carried out by a suitably qualified appliance engineer.
1 Answer
Hello. On many AEG/Electrolux machines, E52 is commonly linked to the motor feedback/tacho circuit, but it can also be caused by the motor control board or wiring rather than the motor itself. The “hums but won’t turn” symptom is useful.
Before doing anything internal, isolate the washing machine from the mains.
1. Check the motor brushes first If this is the original motor, worn carbon brushes are a very common cause. Remove and inspect both brushes. If they are short, chipped, sticking in the holders, or not making good contact with the commutator, the motor may buzz and fail to turn.
2. Inspect the commutator Look at the copper segments on the motor armature. If they are badly burnt, blackened, rough, or uneven, the motor may not run properly even if the brushes are present.
3. Recheck the tacho coil and magnet Your 180 ohms across the tacho sounds plausible, and seeing a small voltage when spinning by hand is encouraging. Also make sure the tacho magnet on the motor shaft is secure and not cracked or loose.
4. Check the wiring loom carefully Trace the wiring from motor to control board. Look for damaged plugs, loose pins, corrosion, or broken wires, especially where the loom flexes.
5. Suspect the motor control/inverter board If brushes, commutator, tacho, and wiring all check out, the next likely cause is the motor control electronics. A failed triac/driver or dry joint can give this exact fault.
If you post whether this motor has carbon brushes and their condition, that would narrow it down quickly. For mains testing on live circuits or control board repair, it’s best to use a qualified appliance engineer.
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This answer was generated automatically by the WhitegoodsHelp AI Assistant. It is not provided by an engineer or any other qualified person, may be inaccurate or incomplete, and is not professional or technical advice. Do not rely on it. Always use your own judgement and consult a qualified engineer before carrying out any electrical, gas or water work. Use is entirely at your own risk. See our full Terms of Use.
SAFETY FIRST: READ BEFORE ACTING ON THIS GUIDANCE
Never work on a live appliance
Always unplug it at the mains before going near it with any tools.
Never attempt gas work
By law, gas appliances must only be worked on by a Gas Safe registered engineer. If your fault involves gas, stop and call a professional. Do not attempt it yourself.
Watch for sharp edges
Outer panels are smooth, but internal parts have sharp machined edges. Wear protective gloves and arm sleeves.
Water appliances can leak
Turn off the water supply before disconnecting any hoses.
Know your limits
If you are not confident testing or working inside the appliance, stop and call a professional.
AI guidance, not guaranteed
This response is generated automatically by the WhitegoodsHelp AI Assistant. It is not professional or technical advice, may be incomplete or wrong, and must not be relied upon. Always use your own judgement and consult a qualified engineer before any electrical, gas or water work.
This is general information only and is not professional advice. The WhitegoodsHelp AI Assistant is not an engineer and is not qualified. See our full Terms of Use.
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