Question about Bosch Tassimo TAS4511UC Coffee Maker

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Hello I cannot find a descaling solution for my Bosch coffee maker other than CLR. I am very frustrated. I called the toll free number and was not given any help as to where I can buy this product and I have been running around all afternoon to different stores looking for it. Right now, I am very annoyed. Can you give me some help? I live in Hamilton, Ontario, Canada. Thank you. Mrs. Sharon Brennan

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  • Bosch Master
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Fixya is unable to identify sources of CLR.

Posted on Jul 28, 2017


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SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

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Posted on Jan 02, 2017

  • 7 Answers

SOURCE: Bosch Benvenuto TKN68E75 Coffee Maker

On the bottom of the sliding spout assembly is a little tab (remove tray and look w/mirror). Once you depress that with a knife/fingernail/screwdriver, you can pry the cover of that assembly toward you on the bottom. Insert a screwdriver in the resulting slot on the side and carefully slide it up; the curved plastic cover with "BOSCH" on it will pop off. Don't worry, it's pretty flexible PVC.

Now pull on another (newly visible) tab on the bottom of the assembly (use mirror again) to disengage the entire spout mechanism (two black cylinders) which will then hang toward you by the coffee tube only. Carefully disconnect the coffee tube. Now you can wash them out (I do that every 6 months or so).

Best results: Hold one tube and the middle drainhole shut with your fingers and blow water hard into the outflow side of the other one (over the sink, of course). Repeat on other side. Soak unit in hot water w/soap, clean w/high flow, dry. Your view into the unit from the bottom (where the coffee normally comes out) should be unobstructed except for the PVC cross inside the tube.

Everything snaps back together very easily. The hardest part is connecting the coffee tube again, especially if you have big hands...

While you're at it, open the side panel below the bypass doser. On the brew group you can see three little plastic covers that, once pried off with a knife, reveal three 1/4 turn screws marked with an open and closed key symbol. Opening them will enable you to slide the brew group out and give it a good cleaning.

Take a vacuum cleaner with the narrowest attachment and vacuum all the loose coffee grounds out of the machine. Clean the inside as much as you can. Do not reassemble until the brew group is dry, otherwise the wet spots become caked with coffee.

Unscrew the steaming wand by loosening with a coin or knife on the bottom. It disassembles into a rubber holder, the metal wand, and the plastic frothing piece. Soak all three in a glass of hot water with soap. On the frothing piece there are two notches as well as a tiny hole that I usually have to clear with a knife tip. Insert a soapy Q-tip up into the pipe on the machine and "roto-root" it. Repeat with clean/wet Q-tip. If the outside of that pipe is dirty, tie a hot wet paper tower to it for 1/2 hr to soak it off. A Scotchbrite pad or steel wool will do the rest. If you maintain it this way every two weeks or so, it will never get caked up and you'll always have great foam.

Bosch factory support and local support is questionable, so I clean mine every 6 months or so, now that I know how to do it...

Posted on Sep 11, 2009

Testimonial: "Thanks a million for sparing your time and knowledge, your very detailed help has been invaluable"

  • 1752 Answers

SOURCE: After descaling the coffee maker is leaking from

Throw it out and buy a new one, that's not repairable.

Posted on Oct 21, 2009

  • 1 Answer

SOURCE: descaling your tassimo machine

My Bosch manual is very specific: DO NOT USE VINEGAR! They recommend you use any commercial coffee machine descaler.
CLR recommends itself for the job and the Jellmar website has instructions.

Posted on Jul 14, 2010

  • 11800 Answers

SOURCE: Bosch Benvenuto built in Coffee

The quality of the coffee depends on the amount of actual coffee used - if it's too weak then not enough coffee is delivered to the filter by the dispenser. You will have to take the dispenser apart to see what's preventing it from doing its job - most likely it's clogged and in need of a serious cleaning.

Posted on Apr 03, 2011

  • 43501 Answers

SOURCE: after descaling with CLR coffee maker still says


Here is a tip that I wrote that will give you some things to try that will helpyou get your Keurig coffee brewer workingagain.

Keurig CoffeeBrewer not making a full cup of Coffee


Posted on Aug 07, 2011

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How to use acid citric to clean a thermal 5lr boiler

Use CLR or white vinegar. If it is a plumbed in unit, there is usually a small bypass tank at the rear and a crossover valve where you put the descaler and then run the cycle. On others, you fill the water tank and run the descale program.

The amount of Citric Acid you would need is prohibitive, CLR is a better product.

CLR Calcium, Lime & Rust Remover is a powerful formula that quickly and easily dissolves and removes tough calcium and lime deposits as well as surface rust stains from bathtubs, toilet bowls, sinks, glass, chrome, fiberglass, stainless steel, most coffee makers, humidifiers, dishwashers, washing machines and ...

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CLR descaling coffee machine Google Search

Oct 03, 2017 | Coffee Makers & Espresso Machines

1 Answer


Depends on the type of coffee machine, but with a normal pour and drip machine, you swing the water nozzle away from the filter cup so that the water goes back to the reservoir where you pour the water in. Mix CLR to the recommended strength and run the coffee machine for about 20 minutes recycling the water the descale solution. Then carefully swing the nozzle back over the filter holder. Run three normal cycles with fresh water and that's it.

For fixed and plumbed in coffee makers, there is a tank that you fill with descaler and a lever that cuts off incoming water and takes it from the tank. You would need to refer to the maker's instructions.

On a free flow machine, you can just make enough solution to fill the tank and run it. Then rinse with fresh three times.

Oct 12, 2016 | Coffee Makers & Espresso Machines

1 Answer

Tassimo. Why do descaling light and water light turn on in the middle of brewing, then machine stops?

fill it with clr and run it 2 times,then run it with fresh water each time 2x to rinse it,save the clr it is still good,use a water filter on the water

Jul 13, 2015 | Coffee Makers & Espresso Machines

1 Answer

After descaling with CLR coffee maker still says descale. Machine is about 3 yrs old


Here is a tip that I wrote that will give you some things to try that will helpyou get your Keurig coffee brewer workingagain.

Keurig CoffeeBrewer not making a full cup of Coffee


Jul 31, 2011 | Keurig B60 Coffee Maker

1 Answer

I have twice run white vinegar through the coffee maker and I still get the message "descale". I find this very frustrating and time-consuming.

Sometimes it is just computer being stupid, try running some CLR, or try getting from restaurant supply, brand called Puro, it is made ( professional grade) for espresso machine, way , way more effective for descaling, and it is a powder, and one application is compared to about 10 times with water and vinegar . Let me know. mike (Mr Bean Man)

Jun 13, 2011 | Keurig Platinum B70 Coffee Maker

2 Answers

Descaling your tassimo machine

My Bosch manual is very specific: DO NOT USE VINEGAR! They recommend you use any commercial coffee machine descaler.
CLR recommends itself for the job and the Jellmar website has instructions.

May 06, 2010 | Braun Tassimo Coffee Maker

2 Answers

Gets stuck on brewing ....just makes a noise like it wants to brew ...however nothing happens

b70 has a known the toll free customer support number and give them your serial number...tell them what is happening...they will ship you a replacement at no'm not kidding. I had the same problem as did a co-worker. We all received a replacement and we didn't even have to ship the old unit back.

Mar 25, 2010 | Keurig B70 Coffee Maker

1 Answer

Starbucks uses a cleaning tab to clean out their coffee pots every you know what it is????????

You could simply ask them at the store...  I know they do sell a descaling product at their stores. Most hardware stores sell coffee machine descaler. I use a cleaner/descaler called "CLR" (Calcium-Lime-Rust) which comes in a small grey jug and is available at most hardware stores.

Apr 02, 2009 | Starbucks Barista Utopia

1 Answer

Bosch Benvenuto B30

The cleaning program is different from the descaling program.
The machine is now wanting you to descale the machine. Get some descaling powder or tablets, desolve in water and let the machine run through the descale program.

May 31, 2008 | Bosch Benvenuto B30 Espresso/Coffee Maker

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