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I have a Bosch Maxx WFL2006 that fills, drains and heats correctly, but no movement at all from the motor. An engineer visited, took 2 minutes to say that it needed a new motor because the coils wear out. I stripped and cleaned the comutators and brushes. Get shorts on all the coils and when reassembled get less than 15 ohms resistance between each pair of connectors to the motor, yet still no sign of life when back in the machine. If the motor was going, surely it would run rough before stopping. This just stopped working. Is there a sensor that would allow other functions, but prevent the motor from turning. I’m thinking about sticking a meter across the connections and running the machine or taking the motor out and stick 240V across it’s connections (though in the garage and standing back a bit).
Any thoughts?
Re: Bosch Maxx WFL2066 – No motor movement
Could you check the model number please, neither of the models, the title (WFL2066) or the one in the actual post (WFL2006) exist.
It will also have more numbers after these, i.e. WFL2???/GB??
Dave.
Re: Bosch Maxx WFL2066 – No motor movement
This is an odd one! I too do not recognise the model number. Please, please can you give us the full model number in order to assist 🙂
Martin
Re: Bosch Maxx WFL2066 – No motor movement
I’ll double check tonight and let you know in the morning.
Re: Bosch Maxx WFL2066 – No motor movement
If you’re sure the motor is OK and there are no broken leads anywhere, it can only be the electronic control unit behind the facia panel.
Possibly a dry joint on one of the relays as this is not unknown on these models.
Dave.
Re: Bosch Maxx WFL2066 – No motor movement
In almost all circumstances the motor not turning is simply due to worn carbon brushes (Part No: 154740). I have never encountered (yet?) any other motor fault with this model. I would be surprised if the windings were at fault and as long as you have continuity through all terminal connections (including the internal thermal fuse link 😉 ) and that the motor plug is in order, then it should work 😕
Some machines can have Control Module Board failure that would stop a supply to the motor but that is very rare and is usually accompanied with an ‘error’ signal on the front panel.
MartinRe: Bosch Maxx WFL2066 – No motor movement
The brushes do have some wear, but I’d expect some rough running or the motor attempting to move before failure. I get near shorts across the 3 pairs of connections on the motor connector so does that suggest that the thermal fuse is Ok? At the time that I expect the motor to start, I hear a relay click followed a couple of seconds later by another click. Does one of the pair connections work as a movement sensor and the second click being it stop sending power to the motor as there is no movement.
I’m also interested in the idea of it being a dry joint on the control board. I’m handy with a soldering iron, so that would be an easy fix.Re: Bosch Maxx WFL2066 – No motor movement
The relay clicks you’re hearing could well be the reverse tumble action supplying power to the motor during the ‘wash’ part of the cycle 😕
If you set the machine to spin however those same relays will click only for a short period of time prior to the continous spin sequence begins.
I wonder why, when it took the engineer just 2 minutes to diagnose a motor failure why he didn’t fit a new one to prove his diagnosis to you? It’s your option NOT to have the repair completed after all 🙂
I can assure you that Bosch circuit boards are not repairable no matter how deft you are with a soldering iron 🙁
Martin
Re: Bosch Maxx WFL2066 – No motor movement
I’m I right in presuming that it is a 240v AC supply to the motor main coils? I could track back the main coils back to the circuit board to make sure that a supply is being put to the motor. If the main PCB or the Motor needs to be replaced then I guess it’s beyond economical repair, but I’d like to know for sure before I throw it away and spend good money on a new one.
Re: Bosch Maxx WFL2066 – No motor movement
Your presumptions are correct in that the motor does rely on a 230/240 AC supply directly to the 8 way ‘motor plug’ from the circuit board. I am not in a position to tell you which wire goes to which on that motor plug and I cannot advise or recommend you checking it either. 🙁
Going back to your original situation for a moment, you say the motor suddenly stopped turning? Now as I previously stated, it usually means that the brushes are worn down completely (less that 8mm long and the end blackened and no longer smooth) If that wasn’t the situation in your case then I am sure the motor is fine :tup:
Therefore you can likely assume the main circuit board is at fault (Part No: 268118 cost £104.53) and is not repairable in any way I’m sorry to say.
Beyond that I cannot help you further and recommend you call in the experts.
Martin
Re: Bosch Maxx WFL2066 – No motor movement
Thought I had called in the experts when I called the engineer from Autowash.
Re: Bosch Maxx WFL2066 – No motor movement
Guest wrote:Thought I had called in the experts when I called the engineer from Autowash.
Maybe they are had they seen the job to a successful conclusion? May I enquire how much their quote was to do so?
Martin
Re: Bosch Maxx WFL2066 – No motor movement
£20 for an estimate. Was told at the time I booked the call that the engineer be able to tell me exactly what was wrong with it and if I wanted it repaired, there would be an additional labour charge. If I prove his diagnoses wrong, then I will want my money back.
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