Jump to content

Book washing machine & appliance repairs Buy appliance spare parts

Note: The links above are needed to help keep this site running, please consider using them.

Georges

Bosch WVG30461GB/01 won't lock and start

Recommended Posts

Hello,

It is my first post here, and I hope I will find some help about this matter.

I have this washing machine Bosch WVG30461GB, which started acting up a while back. So I'd click on the start button, after having selected the program, the door would click once and then click again, the machine would beep twice, the lock icon won't come on and the machine won't start.

It used to be intermittent, and in the instances where it didn't start, retrying a few times usually got it working again.

About a week ago the issue became permanent, no matter how much I retry the issue persists.

After having checked the obvious things, including no blockages or anything stuck in the pump. I looked a lot on the internet, and it seems most answers pointed towards the interlock being the faulty part, I took it out, bought a new one and installed it, but nothing changed the issue is still the exact same.

An additional thing I did actually try, is I took the old interlock, opened it, removed the locking mechanism from it (the mechanical tongue that locks the door), and then I forced the solenoid in the locked position, low and behold the machine starts, most of the time, sometimes it still doesn't but retrying a couple of times usually works. obviously this is not very safe as the door can be opened at any time.

The last test I did is I started disconnecting the different parts of the machine one by one thinking that if there was a short circuit somewhere this might help me find it, but none of  this helped, every time I disconnected something and tried it did the same exact thing. except a couple sensors that when disconnected didn't allow me to click the start button in the first place.

So here I am super confused about what the issue might be. Sorry about the long post, but I thought the more information I give the better you would be able to diagnose and hopefully shed some light on what might be going on.

I thank you all in advance.

Regards.

Share this post


Link to post
Share on other sites

Book washing machine & appliance repairs Buy appliance spare parts

Note: The links above are needed to help keep this site running, please consider using them.

Hello Georges. Wow, I get a lot of extremely dedicated people here who refuse to give up. You must have been very annoyed and puzzled when the new door lock didn't work. It does sound like a potential door lock fault unless somehow the door lock isn't receiving enough power to activate it. If you fitted a brand new lock and fitted it properly and have the same fault it's most likely something else. The only other thing I can think of is a possible issue on the PCB not supplying enough power but I wouldn't know how to test for that. 

I don't know if this article helps at all but worth a look just to fully understand how the door interlock on a washing machine works and just in case there's something there that helps. Also just make sure the door catch on the door is fitting inside the lock OK and nothing is loose or broken.


Need an engineer, or to buy appliance spare parts? Please use my affiliate links to support this forum.

Book appliance engineer | Buy your Spares (4Washerhelp)

Warning:  Read this before attempting any diy repairsNo representations or warranties are made (express or implied) as to the reliability, accuracy or completeness of advice. I can't be held liable for any loss arising directly or indirectly from the use of, or any action taken in reliance on, any information on this website, which is given free of charge and in good faith.

Share this post


Link to post
Share on other sites

Thank you for the quick reply Andy, I had had a quick look at the control PCB, nothing seemed odd/burnt on it. the interlock that I have is a solenoid based one, I tried it on the machine while I had it in my hand, and mechanically it was doing the right thing.

I am sure I installed it right, as it is literally just plugging the cable and clicking it into place.

I am not sure why it clicks twice though,  is it locking and then detecting a fault somewhere so it unlocks, hence the second click. or does it attempt a first time to lock, detects that it didn't manage to do that and then tries to lock again hence the second click?

someone on another forum suggested that it might be a fault with the motor control pcb or an earthing fault, not sure about these, I haven't had a look at the motor control pcb though to see if there is anything odd with it, I will during the week end.

"extremely dedicated" lol , well I am a mechanical engineer,it comes with the territory I suppose :D

and what confuses me even more  is that when I force the interlock to think it is locked, most of the time (as I have to try a few times every time I want to run it) the machine runs normally, and does a proper wash / dry cycle, with all the washing, spinning, draining and drying working properly. without that override it never runs.

Share this post


Link to post
Share on other sites

Earth faults and earth leakage faults can cause some strange faults. Have you tried it in a different wall socket just in case? It’s a long shot but worth a try.


Need an engineer, or to buy appliance spare parts? Please use my affiliate links to support this forum.

Book appliance engineer | Buy your Spares (4Washerhelp)

Warning:  Read this before attempting any diy repairsNo representations or warranties are made (express or implied) as to the reliability, accuracy or completeness of advice. I can't be held liable for any loss arising directly or indirectly from the use of, or any action taken in reliance on, any information on this website, which is given free of charge and in good faith.

Share this post


Link to post
Share on other sites

Hello again, just to give you an update. so I went ahead and worked on it a bit more this last week end, different sockets gave the same result, and the problem persisted if I had disconnected the motor board completely, but then I worked a bit on the control board, disconnecting cables, testing, trying to clean plugs (they weren't dirty or anything, just though it might be a lose plug or smtg). reassembled everything and low and behold everything works as expected. we did a few washes and 2 days later the same problem is back!! so I redid similar manipulations to what I had done the previous time, but this time there is no luck I can't get it to work again, I thought of doing a reset but couldn't find the procedure for it, and thought of running the test programs but I couldn't find their descriptions anywhere, and it seems most of them don't run because of the existing problem (as the machine can't lock properly)
So at the end, I called up bosch and they are going to come over and have a look. I will let you know what it turns out to be.

  • Like 1

Share this post


Link to post
Share on other sites

Thanks for the update Georges. It sounds like you are having a very frustrating time. You must have been delighted then gutted when it worked for a few washes then failed again. Please let us know what the engineer finds.


Need an engineer, or to buy appliance spare parts? Please use my affiliate links to support this forum.

Book appliance engineer | Buy your Spares (4Washerhelp)

Warning:  Read this before attempting any diy repairsNo representations or warranties are made (express or implied) as to the reliability, accuracy or completeness of advice. I can't be held liable for any loss arising directly or indirectly from the use of, or any action taken in reliance on, any information on this website, which is given free of charge and in good faith.

Share this post


Link to post
Share on other sites

Hello Again,
So the problem turned out to be the main control board. The guy didn't do any tests, he said he's seen this same problem before, just got there took out the board put in a new one and bob is your uncle.
Since the machine is still pretty new, bosch provided the parts for free, and I only had to pay the callout fee of 95£. So it wasn't bad after all.
He suggested it might be one of the relays misbehaving on the old pcb, I went ahead and tested all the relays one by one, all seem to be working fine. When I find a bit more time I will play with that pcb a bit more, to see if I can discover what was causing the issue, it is a fun exercise, but there is a lot of super tiny smd components on that board, so it might not be that easy to figure things out...maybe I can serial connect to it,a nd see if it is spitting out any errors on a serial monitor...

  • Like 1

Share this post


Link to post
Share on other sites

Excellent. Many thanks for the update. So it sounds like there is a relay on the PCB that is involved in locking the door. The door locks don't historically work like that, they usually just get a mains supply and when the door latch pushes inside it just moves a latch across and sends power to the rest of the machine and activates a small bi-metal strip. That system has been in use for over 40 years. If they have involved the PCB and a relay that seems like an over complication and as you've found a big escalation in potential repair costs. (how a normal door lock works.)


Need an engineer, or to buy appliance spare parts? Please use my affiliate links to support this forum.

Book appliance engineer | Buy your Spares (4Washerhelp)

Warning:  Read this before attempting any diy repairsNo representations or warranties are made (express or implied) as to the reliability, accuracy or completeness of advice. I can't be held liable for any loss arising directly or indirectly from the use of, or any action taken in reliance on, any information on this website, which is given free of charge and in good faith.

Share this post


Link to post
Share on other sites

I've just added a link to this thread in the article about door locks btw.


Need an engineer, or to buy appliance spare parts? Please use my affiliate links to support this forum.

Book appliance engineer | Buy your Spares (4Washerhelp)

Warning:  Read this before attempting any diy repairsNo representations or warranties are made (express or implied) as to the reliability, accuracy or completeness of advice. I can't be held liable for any loss arising directly or indirectly from the use of, or any action taken in reliance on, any information on this website, which is given free of charge and in good faith.

Share this post


Link to post
Share on other sites

Indeed there is a relay that drives the door lock.

The door lock on this machine doesn't have a bi metal strip, it rather has a coil that, when activated, pushes a catch like those on those push to open kitchen cabinet doors, that latches and causes a switch to close feeding back that the machine is now locked, so the relay basically activates the coil for a very short period and then releases it, because now the catch is active. to unlock the coil is activated again and the catch goes back to the unlocked position. If I ever manage to discover why the coil was activated twice causing the door to unlock I will re-reply to this thread, it is tricky though, as it might be the software, one of the ICs, one of the components/tiny smd components or a loose joint or broken track especially that it was intermittent.

I was surprised he didn't hook up his computer to the board and analyze to try and figure out what caused the issue in the first place, I guess it is easier to just replace the part and move on to the next job.

Share this post


Link to post
Share on other sites

Hello Georges. If he's familiar with the symptoms an engineer will always just swap the part over if he has one and it's not a big job. They aren't taught to test them. I'm pretty confident that you know more about PCBs that him or me. Appliance engineers just replace the boards. No parts are made available by the manufacturers to fix them, and no tools or technical info supplied to diagnose. If the engineer said it was possibly a relay on the PCB  then there must be a relay involved. I can't think what the purpose would be if the door lock has a relay. A guess would be that the relay on the PCB needs to activate and stay activated which then powers the door lock but a fault meant it activated and switched off?


Need an engineer, or to buy appliance spare parts? Please use my affiliate links to support this forum.

Book appliance engineer | Buy your Spares (4Washerhelp)

Warning:  Read this before attempting any diy repairsNo representations or warranties are made (express or implied) as to the reliability, accuracy or completeness of advice. I can't be held liable for any loss arising directly or indirectly from the use of, or any action taken in reliance on, any information on this website, which is given free of charge and in good faith.

Share this post


Link to post
Share on other sites

Hello Georges

I have the exact same problem. I changed the interlock with no joy. I have changed the operating module in error (cost £90)!!!. Can you please let me know which pcb you are talking about and where is it located? Would much appreciate it as Bosch are offering appointments 2-3 weeks in the future.

If you have the part number I will be eternally grateful.

Thanks.

Share this post


Link to post
Share on other sites

** Exactly same issue **

Hi Georges and everyone on this forum,

I have been buying Bosch appliances as I trust their quality until lately when my Bosch washer dryer started giving me issues and is now completely broken down. When searching on google I came across this thread and I have exactly the same problem so thought of asking the options I have to get it fixed.

I bought my BOSCH wvg30461gb on 28-Jan-2016 from Currys and the clicking sound started mid 2018 followed by a complete breakdown last week (second week of Jan 2019).

Please suggest what I must do. I am hoping Bosch will repair it at no charge - if not then to get it repaired outside myself (suggestions welcome for where you expect good service).

Thanks

Lynn

Share this post


Link to post
Share on other sites

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now

×