Thank you, mate. I just went through this process with my Heat Pump Clothes Dryer, and your guide was perfect for this task. I felt completely comfortable with the dismounting and mounting processes. Here are some lessons learned that might be helpful to others: 1. After dismounting all the elements, I decided to also disconnect the entire front panel of the dryer. There are just a few screws at the front that allow for this. You do not need to disconnect any cables; you can simply move this panel to the side. This provides far better access to clean the heat pump elements. You can also vacuum clean all the dust from the hidden sides. 2. I opted to use a Kärcher SC4 pressure steam cleaner. It worked very well, although even having such a strong tools it took about 2 hours (and several refills of the water tank) to complete the cleaning process. The final result was however worth it. All the water drains into the water container, so there's no issue there. I used a bit of plastic foil to separate other places (like back side radiator) and not allow steam to go everwhere. You also need to be more cautious when cleaning the back side radiator, as it does not have channels for water underneath. But rest assured, the steam cleaner is safe and does not damage the radiator components at all. 3. It's beneficial to dismount the small water pump at the back side as you did and clean the water container, as there's a lot of dust in the water too. To do this, you can place the base on some coasters, tilt the base to pour out the water, and then use sponges, etc. It is also good to rinse it with water. If available, you could use another water pump to pump out the water and clean the container (I unfortunately did not have any ). 4. Screws - there are two types of screws. It's helpful to note which type is where. My observation is that one type is used to assemble metal elements and the other is for attaching metal to plastic. By taking these notes, it's easier to select the right screws in the right places, when you are putting all the things back together. 5. Last but not least, I have added an additional seal around the removable filter because I think it is the area through which most of the dust passes (the original rubber seal is not sufficient). I created it from the type of sealant you can buy for home window insulation. However, this is an element where you can get creative with your own ideas ;-) : prnt.sc/Nf8JNTwNu_ew 6. Some clothes dryers, of that type do not have access to clean the heat pump from the front panel. I advise in such case to invest in the maintenance flap available i.e. on Amazon: Bosch Siemens 646776 00646776 : prnt.sc/smQvZk6wNvq6 There are movies on YT that explain how to mount it i.e. : kzfaq.info/get/bejne/o76WrJWA39TLeoE.html I believe this is the best guide on the internet to fix Bosh heat pump clother dryer, and thanks to you, I saved the equivalent of 200 USD ( I double checked it) by not needing to call a service technician. Thank you again, and a BIG LIKE to you from Poland! 💪🙂👍

I would have never been able to revise our dryer without this video. Thanks!! You saved me a lot of money on a new dryer. After implementing advises from others (special cleaning program on the tool using hot water and a cleaning product, cleaning the condenser from only the front side...), this total disassembly was the only approach that really helps. It's working back as new!

Thank you Mr Washy. This was the bravest DIY project I’ve ever done but 7 hours later my machine is like new! Totally worth it. Our repair man said it wasn’t fixable and we should buy a new one. Many thanks to you for putting this video together 👍

Thank you so much for this video! I know what we’ll be doing this weekend. Your explanations make it seem doable to get our dryer back in better condition.

Thanks so much for this, what a great video. Easy to follow and really detailed. Our dryer started taking a really long time, it's 3 years old but has had heavy use. It lives inside a laundry cupboard, which is fine according to Bosch's website. The amount of lint in here was perplexing - I clean the filter after every use and always have done. What a huge fire hazard - I'm going to call Bosch and ask if I've been doing something wrong for it to get so built up. We can't thank you enough for the upload! Have a wonderful Christmas.

Champion!! Got it apart all the way as described on video and back together with all screws in place👍 Thank you for putting this video together and posting it!

Wasn't looking forward to it but I managed to clean my "not-so-self cleaning" dryer thanks to your instructions. Took me about 4 hrs to dismantle, clean and reassemble. Great help. Thanks! 👍🏻

Many Thanks Mr Washy. This video made a complex repair job very easy. The step by step (with explanatry comments from time to time) made this a seamless job with exceptionally good final results. Wish there was more videos as simple and self explanatory as this one. Well done.

Thank you so much for this video. My machine has just gone out of its 5 year warranty and as I don't use it in the summer I had forgotten just how bad at drying it had got. The symptoms described were just like mine so thought I'd give it a go. My husband and I took it apart yesterday, cleaned it and I've used it today. It's like a new machine. Absolute genius! ❤

Thank you so much for this video. After 4 years the dryer stoped working correctly but with such detailed step-by-step instruction I was able to fix it. About 5 hours of work time (no rush), steam cleaner + compressor and of course Your video and dryer work like a charm. You rock!

Exactly what I was looking for! Got most of it in pieces myself, but a few of the clips and screws are really hard to get a grasp on. Now to clean, reassemble and cross my fingers. Thanks so much for this, people like you are what makes the Internet great 👍

Thanks a LOT for this walkthrough! I've finally decided it's time to clean up mine (after nearly 8 years of daily usage and coming to a point where I had to put it through four or five cycles to dry clothes like 80%) and oh boy was it full of dust and lint. Much worse than in this video. Oops 😅Thanks again mate, my dryer now works great again. Note that you can also remove the panel below the two radiators which exposes the bottom and in my dryer it was full of black sludge. I cleaned that as well.

This is exactly what I needed. I tried to clean it without disassembling it with with a shower hose, but this gives me the confidence to do it properly! thank for a great video/upload.

My 9 year old dryer is as new after 3 hours work. Also rinsed the whole section and cleaned the pump area. Thank you for saving me 900 euros for a new one ;)

This video has saved me hundreds of Euros. After a solid 6 hours of work and cleaning the condenser vanes, the dryer works as new again. Thank you for the clear, calm and to the point instructions.

You sir are an absolute legend. Saved me calling out someone to fix. These car dashboard removal tools were great for removing the clips. Glad I watched all of the video before starting. Removing the heat sensor before trying to remove the harder to reach screws made it much easier. I could just use a straight driver. Thanks again.

Also I performed this cleaning procedure, on a Siemens iQ800 WT47Y700NL. It has some slight design differences (there are two back plates, one metal and one plastic, and there is no additional wheel for the belt - just the motor axis and the drum). But the cleaning job is just the same. The machine was generally fairly clean inside. But in the end, there was a thin but impermeable layer of dirt blocking the condenser. Cleaned that and the machine runs as new! Thanks so much for doing the effort to post this, Me. Washy Washy! PS. By the way, the WT47Y700NL (and possibly others) does have a COMPONENT TEST MODE. It can be accessed by (1) switching on (2) setting the rotary knob to "towels" (3) pressing the "dryness level" button AND KEEP HOLDING IT (4) turning the rotary knob to "Blanket", (5 ) Release the “dryness level” button (5) Briefly press the “dryness level” button again. A menu will then appear with all kinds of measured values (sensors) and you can walk through eight options. P1 (motor, fan, P2 (compressor), P3 (rinsing), P4 (cond.sense), P5 (ref.pump), P6 (refresher), P7 (drain set), P8 OU test. Each option is with the At P1, for example, you switch the drum motor on and off manually, and at P8 the device tests all lights and the display.

Thankyou very much for the detailed repair video. I wouldn't have attempted this but for the thorough step by step help. Managed to carefully lift up the heat exchangers and clear out the lint filled water in the sump with a sponge.

Thank you for a truly detailed teardown and clean out video. Would agree with the other comments, do not use a cloth on the condenser, vacuum with a narrow tube and soft brush end. Fixed my Series 6. Working like new. Total time for the teardown, clean out and rebuild is about 4 hours taking your time and doing a thorough job. I am not a novice in these repairs but it was my first time taking this unit apart.

Big thank you! Our 8 year old Series 4 weren’t really drying anything anymore and clothes smelled funky once dry. Figured that heat exchanger needed a clean. Never really trusted that ”self-cleaning” function. There were some lint, nowhere near as much as the one in the video. Which was a bit surprising given the age. I guess we’ve been cleaning the filters properly. However, the HE. Oh boy! It was a thick thick layer covering both the small and the large one. 😂 Ended up removing the front. Not sure I saved any time, but I didn’t like the bending parts. Also, some commented about getting a proper seal again. Took me a total of 5 hrs. But only cause I had to go back and redo some parts. Cheers!

Nicely described, well prepared and pleasantly presented. I came across your video when in the process of considering the purchase of one of these machines. Was pleased to be able to see the inside and get an "insight", literally to the inside and workings of the machine. Thank you very much, PNH.

What a bloody fantastic demo. Amazing. It's because of guys like you that we can keep these machines out of landfill. I'm a tech and people give me things that others have not been able to fix. Because of this video their heat pump drier will be as good as new, when after several attempts by the manufacturer (contractor) to repair they were told to buy a new one. Obviously the contractor did not want to go this far to service properly.

I followed this video and my dryer is as good as new again :) Amazing feeling to pull it off. Thanks alot for the excellent guide!

Great video, it took me 4 hours to completely dismantle the machine, clean it and put it back together. Now works like new. 👍

Thank you for a great guide! My machine working again after a month of errors. You hae made a nice and thorough walkthrough on every step of the process. Good work!

Just wanted to add my thanks for creating this video. Got my 2018-spec Serie 8 opened this weekend and got the condensers cleaned without a hitch! It's nice having HOT and DRY clothes come out of the dryer once again.

Thank you so much for doing this - saved me a ton of money replacing my Bosch dryer - followed your instructions and now have a perfectly working dryer again!

Thank you so much for this excellent tutorial on how to clean this dryer. We own pretty much the same one (just the Siemens version) and ours also started to take a very long time to dry, and on top of that, more often than not it says the wash is dry even though its actually still pretty wet or damp. With the help of this video I was able to take the thing apart and clean it all! (which proofed to be really needed too) 😊

Cracking video, it looks like a big task but after watching your video I feel I can take this on. Really well explained

It has been already 5 years since I have bought mine. I started to wonder does the "self cleansing condenser" need servicing and I got to your tutorial. Now I am convinced that I will have to perform this procedure at some point and will pay a good due diligence on doing so. Thank you very much for this video.

I had a lot of gunk beneath the condenser which I got out by using a small tube connected to a wet n dry vacuum. Worked a treat, so much for it being self cleaning. Thanks heaps for the detailed step thru.

My brother Mr Washy Wash, that was the most amazing tutorial, I have ever seen. You was so detailed in all aspects of your instructions and camera positioning. Your volume leve is a little low if you increase it. It will crease it over the top. Thank you and I subscribed to your channel. I look forward to my journey with more other instructor. I definitely will sending you a donation as soon possible, thank you again and God bless you and yours, Master Washy Wash!!! Goddpeed.

❤Thanks for you’re informative video the instructions were very easy to follow We found the inside of a pen in the fan and a cord wrapped around the drum at the back also lots of lint

I'm currently cleaning the second machine in my career as an appliance repairman. It's a 2010 EcoLogixx 7 WTW86561IT/03, built on the older platform as the first I did, a 2013 one. Each time I do this job I actually disassemble the whole machine, even lifting up the entire heat pump assembly and pulling it out of the basement, operation that has to be performed slowly and gently. I'm helped by other two people: one holds the compressor, one the condenser (the hot side, in the back) and one the evaporator (the cold side in the front, referred as condenser because it collects the moisture). Then I blow and wash every single non electric bit, especially the basement which is always full of crap and the evaporator. Finally I reassemble the whole machine, replacing belts, rollers or felt seals if needed. But generally most of the time I find them in good shape, in the first machine I cleaned I've only replaced the drum belt and the second I'm actually doing has surprisingly everything OK. If it was an Indesit, it would be all worn out 🤣 There's still some typical German quality in these machines and they do worth the effort to extend their life, especially on the older ones. The only shortcoming IMHO is they don't reverse the drum rotation, otherwise they are very valid machines!

Thanks so much for creating this video. I fixed my dryer today by watching it. It was very clear!

Thanks! What a perfectly detailed video. This helped me a lot. Took me 4 to 5 hours, but decreased the drying time significantly.

My dryer stopped drying. Followed your tutorial and works like new. Thankyou so much.

5 hour later the job is done. Without you I would have to buy a new one. Thank you very much. Work like a charm 😊

Greate video, just cleaned today our whole dryer. Thanks to your good explaining. Thank you very mutch greetings from the netherlands

Very good instruction video! I also cleaned out the tray below the two heat exchangers, since there was a lot of wet lint there making placques of once-wet-lint leftovers.

Easy to follow video, you are great my man. I"m repairing mine now with your help

Excellent, thorough, well explained tutorial - sorted my Siemens dryer ( virtually identical ) thanks to you !

I bought a second hand different brand dryer that wasn't drying.. took a punt on it $80 Australian. Took it apart by using this video as a guide. As a result I have a perfectly working heat pump dryer that was ridiculously cheap and only took me 2 and a half hours to do. First run to dry bed sheets took 8 hours and still very damp. Second run after the clean out took 2 hours 15 and completely dryer! Thanks so much for this video!

Thank you so much for posting this video. It helped me a lot to repair (clean) my dryer!! Now it is working like new

Thanks so much for uploading this mate! Perfect timing coming into some wet weather. Saved some coin too. Legend!

Fantastic thanks, really helpful. Managed with the help of your video to take our tumble dryer apart, clean it and get it working again. We had a problem with the condensate sensor under the pump which also had to be cleaned along with the sump to prevent incorrect condensate reservoir full errors.

Great tutorial, i had to replace the tumbling drum and I did it thanks to your didactic instructions. Thank you

Fantastic video. I have an outdoor car drying vacuum which has an insane amount of airflow, can just imagine how satisfying it would be to blast everything in this.

Thanks Mr. Washy Washy, excelent video - which helps me a lot. I have bit different model, however 95% of steps were same. Thanks to your really detailed video I was confident enough to give it a try. It took me two days :) however now the 8 years Siemens IQ300 heat pump dryer works as a new one.

After 3 visits (out of warranty) at 150€ each, I did a propper clean by myself thanks to your video!!!

Thank you! Saved me time and money being able to fix this myself.

You saved me a fortune not having to buy a new tumble dryer. We bought it new in 2014 and use it… extensively. When we moved house in 2018 bright spark over here decided to plumb it directly to the drain thus eliminating having to empty the condenser drawer. What I didn’t realise was this completely bypassed the condenser cleaning. After 3 years my wife said the tumble dryer is taking forever and our electricity bill was higher than usual. Being around Xmas time she was looking at a new one. At the prospect of dropping a grand on a new machine I decided to take a look. Low and behold the condenser was full of lint, and your tutorial helped me through the solution. Now the tumble dryer is good as new! I would sincerely like to drop a few quid your way to thank you.

Thank you for this great video. I followed all the steps and was able to repair our dryer.

Just attempted this today on my Bosch series 8 dryer. It was such a fantasitc and easy to follow tutorial! Took a few hours, the lint that came out filled the vac twice! The baked on lint on the side of the condenser had to be wet down and gently scrubbed of with a tooth brush. It's all back working perfectly now. Many thanks to you.

Great job. I was wondering why our dryer wasn’t heating very well. I already had to pull the motor out and stick one of the magnets back on so I may just prepare myself for a more complex strip down. Thank you.

Great video, so pleased we found it, has saved us from having to buy a replacement, thank you for sharing. Shocking though just how much fluff builds up inside these things, even if you are vigilant with cleaning filters, after 6 years we could practically fill a duvet with the stuff!

Great video, very helpful! I have a Bosch Series 4 (WTH85200AU) and the steps are very similar - up until the cover on the condenser. There is no separate plastic part to unscrew and the clips on two sides are as shown - but after that I couldn't figure out how to take it fully off. Thankfully from what I could see it wasn't very dusty (in contrast to the rest of the insides!) After cleaning out all the lint (worse than shown - this is after 4 years of almost daily use) and putting it back together, it is actually drying properly again! Thanks so much!

Thank you Mr. Washy, absolutely magnificent video. I just went through the procedure. And saw one significant difference in my unit; the seal you are about to reinstall at time 30:45 was missing! Based on your video I decided to put in some silicone sealant instead. Now waiting for it to harden, to see if the drying has improved. Another observation; detaching the humidity sensor (two screws just above your left hand at 20:29) helps acessing the screws you are about to remove at that same time.

Thanks Mr Washy Washy, found so much lint inside despite my rigorous cleaning regime. What a bad design. But now it is as good as new again so we hope for a few more years of service. Fingers crossed

This was the video i was looking for. Thnx for the detailed video. I try to fix our dryer!

Great instruction video! Our dryer started to report full water tank even though it was dry. Have a slightly different model, broke a clip on the cover of tbe heat exchanger block, but works well after cleaning up - probably the lint prevented the water from getting into the pump.

Thank you for this complete video, everything is clear. I was looking exactly for this video. It's hard to do but I'll try😅

Thanks for a great walk through. even though we clean the lint filter every time the dryer has been in use, we still have issues with clothes that are not dry even after 3-5 hours of drying. So with help of your video, I will make a total cleaning inside the dryer.

The best explanation ever!! You're top talent!!

Thank you so much for making this, it was incredibly helpful. Without it I would have called in a professional and be a few hundred euros poorer at this point. My dryer was at least as lint-filled as yours, probably even worse. I just put everything back together this morning, and it's humming smoothly again and drying clothes as it should. As a note: our dryer is about 8 years old, and we always did maintain the good discipline of cleaning out the lint tray at the end of every cycle. So it's not a lack of care that is to blame, but probably poor design. From what I can surmise, the felt seals between the drum and the dryer frame are far from perfect and they allow lint to pass this barrier as the drum spins. This is the only way I can imagine the lint to end up everywhere like this. Bosch needs to improve this seal or add a secondary one.

Thank you very much for the good explanation and keep up the good work. Our dryer is as new again!

Brilliant! Followed to the letter and 4 hours later, dryer is working perfectly.

Thanks heaps!! I cleaned my dryer and it works well now. Much appreciate your efforts!!

Your video helped me fix my under-performing dryer. Can’t thank you enough- now like new. ❤

Excellent video! The dryer is working perfect now! Thx

Thank you, helped when we had to take apart ours as it started to smell and there was no way of getting to the heart of the problem without disassembly.

Great video, I have exactly the same model and its not drying. Took it apart as per your guide, my goodness so much fluff!!! I actually removed the condenser and the delicate heat sink things, only 3 screws holding the condenser in place, gently moved the whole lot over to the sink to clear out all the gunk, and let soak over night, and also give that lower water tray a real good clean, mine was literally full of what I can only describe as silt like you get in the bottom of a stream!! All cleaned now, and about to re-assemble. Awesome video and guide, thanks!

Wow, amazing job. Thank you for posting this. Tomorrow I start cleaning mine.

Thanks alot for this video, saved me a bunch of money aswell. One thing i made the mistake of doing was pulling the door glass seal out, mine was full of lint and i should have just washed it but i assumed i could remove, clean and replace. But unfortunately the seal is not able to be put back in! The door needs to be disassembled and it is designed not to be. You cant buy just a seal only a whole door. do not remove the door seal people!

Thanks for this video! My machine is almost the same, and the problem was that the machine asked to empty the water tray, even though it was already empty. By following your excellent guide, understanding screw sizes and everything, I was able to take the machine apart, figure out the water pump part by myself, clean everything, and put it back together in just three hours. Now it works perfectly again.

Just finished my bosch wtw87463by. Thanks a lot for tutorial, you saved me a pretty penny. Mine had few differences, but construction is almost the same.

Thanks a lot for this video, now my dryer runs like it’s new. I also removed the complete heat pump assembly, just 3 screws on the base of the pump, you just need some help to carefully lift it out, then I used air pressure to clean the condenser and heater. I can really recommend others to do this as it also makes it possible to clean the disgusting water tray underneath the condenser.

This is an upcoming task for me. Our dryer is now 9 years, so it's about time! I think I will add a step: dismount the refrigeration cycle (compressor, condensor, evaporator etc). This way, I think I can clean the coils alot better with air and water + a detergent. I might also be able to clean the underlying plastics. Not sure the plastics will matter, but cleaning the coils more extensively is not a huge added task compared to the overall project. Great video!

Thank you so much for the detailed video. I fixed my dryer with it.

What an excellent video - thanks for sharing it

Great video - just what I needed to fix my dryer. Thanks a lot!!🙏🏻

Great instrustions!Appearently lint will build up on condensor again over time due to bad design.

Mr Washy Washy, thank you very much for you very detailed instructions! With your video I repaired my 9 years old Bosch WTY87700NL heatpump dryer with the same amount of lint as yours. Just tell me how I can buy you a beer.

Full credit to you for the quality of this video and your skill and patience. There was an enormous amount of lint in the machine but the fins in the condenser lived up to the claim of self cleaning. The fins were not clogged at all. Did the dryer perform significantly better after this marathon?

Thank you my friend for this really detailed video. I managed to clean my dryer in 6 hours, a siemens iq500

Thank you! Great video, I wouldn’t have dared to do without it.

Mate!! you are awesome!! You saved my dryer! thank you!

thanks so much for sharing this detailed procedure! Have a good life.

Perfect, thank you. Works great for the IQ700 Siemens as well.

Świetna instrukcja - rozebrałem, wyczyściłem i złożyłem. Dzięki wielkie.

Great video, on ours we have always cleaned the filters,but it seems some has long found its way past and into the condenser fins/cavity visible below the trap

Thank you very much! Although I have opened newer version (Siemens IQ700), in general very similar inside, but on different places. Thanks a lot!

Thank you for all detailed disassembly, cleaning tips, extra reassembly technique. This is my favourite repair guide so far! Sadly the construction is complicated as hell. I hope my machine not like this. Cheers!

We bought our Bosch heat pump in 2016 and we use it nearly every day. Recently it hasnt been drying properly and found this video. I did go one step further than this video in that i removed the compressor (3 screws, earth connector, senseor connector amd 3 pin plug at top. And lifted it out to clean it. Under where the condensor sits there is another removable tray and underneath that wad all clogged up as well.

Thank you sir for an excellent service video👍

Was considering a heat pump dryer. Now not so sure I want one. Great instructional video for anyone who already has this but also a good warning to people like my considering this to replace a vented dryer, believign them to be safer as well as cheaper. At least the vented dryer expels most of the lint. (BTW: Maybe consider buying a new microphone. It's a bit weak.) Thanks 😀

This is a fantastic video, thankyou!! But it is worth noting that the later revisions of this model don't have an issue with the self-cleaning condenser clogging like you see in this video - because they added a secondary (very fine) lint filter to prevent the condenser and evaporator clogging. I did the full teardown of my dryer per this video (which was not drying properly) to find the condenser and evaporator perfectly clean. The problem in later revisions of this dryer is actually the fine lint filter they introduced to fix the earlier issue. It can visually appear perfectly clean and free of lint, but try blowing through it or running water through the filter. It's probably partially or completely blocked. Scrub it, vaccum it, and keep doing that until you can blow air unobstructed through all four of the lint filter panels. Replace the filter and your wet clothes and stupidly long drying times will be fixed.

Thanks for a very clear video, I have to do this to my dryer, it is a heat pump one like this but a different make but as you say the principal is the same. Hopefully it will sort out the problem of not drying.

Thanks man, I have just finished cleaning mine in the exact way you did!

Thanks for your help, my Dryer is all clean again and goes fine now.