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electrolux aeg - vacuum cleaner speed regulator not working

SLen 21978 10
This content has been translated flag-pl » flag-en View the original version here.
  • #1
    SLen
    Level 10  
    Hello,
    As the aeg vacuum cleaner started to turn off by itself, I decided to fix it. I read that this is a fairly known problem, and the motor disconnects the sensor under one of the brushes - I pulled out the motor to see if it is working properly and after connecting to the speed controller, the motor does not start at all.
    - all diodes and resistors checked - OK,
    - I checked the triac using the method from the attached diagram - OK,
    - the capacitors are not short-circuited (I have not checked the capacitance),
    - no voltage at the regulator output (blue wires),
    - the most powerful resistors heat up (these 10k Ohm),
    I care about the repair of the regulator, because when I connected the engine to check directly to the network, the plug burned out 16A (the 2kW engine according to my calculations normally takes 8.7A and for start-up I do not know how much, but probably more + other connected devices - the effect as I wrote ...).
    In this case, the 501B-8P chip is blamed. If anyone knows what this system is, what is its replacement, or has any other suggestions and comments for the diagnostic activities I have performed :wink: I will gladly accept any information and suggestions.
    best regards

    electrolux aeg - vacuum cleaner speed regulator not working electrolux aeg - vacuum cleaner speed regulator not working electrolux aeg - vacuum cleaner speed regulator not working
  • #3
    machefi
    Home appliances specialist
    Have you checked what voltage is deposited on the zener diode D1?
  • #4
    SLen
    Level 10  
    On the D1 diode, the voltage in the DC range of the multimeter flows in the range of 2.31 2.43 [V].
    I have not checked the sensor yet (I am in the process of selecting it - it is on the stator winding), but check it by heating it and checking at what temperature it will disconnect?
  • #5
    ElectroTom
    Level 25  
    Say what you plug into that white pin socket. I thought it was this sensor - probably a thermistor.
  • #6
    SLen
    Level 10  
    I plug in a potentiometer (speed control) into this white socket and it works.
    And, as I wrote, under the brushes, it is not there, but there is an element on the stator winding and it is rather him.
  • Helpful post
    #7
    machefi
    Home appliances specialist
    SLen wrote:
    On the D1 diode, the voltage in the DC range of the multimeter flows in the range of 2.31 2.43 [V].

    And everything is clear - a broken chip :cry: .
  • #8
    SLen
    Level 10  
    I am so sorry for that :cry: . Does anyone know what this system is, can it be changed with something?
    PS. Where to find the exact model name of this vacuum cleaner? I am asking because I did not find anything in the papers and there is only the inscription "aeg ergoeasy" on the casing, and when I was looking for the entire module, it was the vacuum cleaners that were distinguished by a series of numbers.
  • #9
    ElectroTom
    Level 25  
    Maybe insert the soft start system itself for PLN 12. Maybe a regulator on the system. U2008 with soft start.
  • #10
    SLen
    Level 10  
    Hello, after a long break.
    I decided to create a soft-start circuit board on the U2008B chip, as proposed by ElectroTom, and exactly I followed the diagram from this pdf .
    The results of my work:
    electrolux aeg - vacuum cleaner speed regulator not working electrolux aeg - vacuum cleaner speed regulator not working
    PS. I know that the board does not knock you down, but this is my beginnings in PCB design. I connect the ground to the electronics with a jumper (yellow line on the PCB).

    Unfortunately, when trying with a 40W bulb, there is no adjustment or soft-start. I connect the bulb to points 2 and 3, the voltage from the mains to 1 and 4. Maybe someone has some experience with this system, or he will notice my mistake somewhere. I will be grateful for your help.

    PS2. If necessary, I will upload eagle files.
  • #11
    watek
    Level 10  
    SLen wrote:
    Hello,
    As the aeg vacuum cleaner started to turn off by itself, I decided to fix it. I read that this is a fairly known problem, and the motor disconnects the sensor under one of the brushes - I pulled out the motor to see if it is working properly and after connecting to the speed controller, the motor does not start at all.
    - all diodes and resistors checked - OK,
    - I checked the triac using the method from the attached diagram - OK,
    - the capacitors are not short-circuited (I have not checked the capacitance),
    - no voltage at the regulator output (blue wires),
    - the most powerful resistors heat up (these 10k Ohm),
    I care about the repair of the regulator, because when I connected the engine to check directly to the network, the plug burned out 16A (the 2kW engine according to my calculations normally takes 8.7A and for start-up I do not know how much, but probably more + other connected devices - the effect as I wrote ...).
    In this case, the 501B-8P chip is blamed. If anyone knows what this system is, what is its replacement, or has any other suggestions and comments for the diagnostic activities I have performed :wink: I will gladly accept any information and suggestions.
    best regards

    electrolux aeg - vacuum cleaner speed regulator not working electrolux aeg - vacuum cleaner speed regulator not working electrolux aeg - vacuum cleaner speed regulator not working

    ================================================== ========
    The vacuum cleaner motor is damaged, possibly caused by running at reduced speed for too long and an overfilled dust bag. The protection sensor first switched off after exceeding the current of 8A, and after removing this protection, the motor surely failed (short circuit of part of the winding).