Why does my Bosch Coffee Maker frequently display that descaling is necessary?
- JJennifer BeasleyAug 28, 2025
If descaling is frequently necessary, the water may be too hard. Insert a water filter and configure settings accordingly in the menu.

Why does my Bosch Coffee Maker frequently display that descaling is necessary?
If descaling is frequently necessary, the water may be too hard. Insert a water filter and configure settings accordingly in the menu.
Why is my Bosch Coffee Maker not frothing milk?
If your Bosch Coffee Maker isn't frothing milk properly, several factors could be at play. Limescale build-up may be the culprit, so descale the appliance. The beverage outlet or connections might be blocked, requiring cleaning. Ensure you're using cold milk with at least 1.5% fat content, avoiding milk that's already been boiled. Also, check that the beverage outlet and milk tubes are correctly assembled, moistening the parts before reassembling. Finally, a blocked suction pipe could be the issue, so clean it thoroughly.
What to do if my Bosch CTL636E.6 Coffee Maker is not dispensing enough coffee?
If your Bosch Coffee Maker isn't dispensing the full coffee volume, several factors could be responsible. The coffee might be ground too finely, so adjust the grinding level to a coarser setting or use a coarser ground coffee. A heavy build-up of limescale could also be the issue, requiring descaling. Lastly, a soiled brewing unit can cause this problem, so ensure you clean it.
Why does my Bosch Coffee Maker coffee have no crema?
If your Bosch Coffee Maker isn't producing crema, the issue could stem from several causes. You might be using an unsuitable type of coffee; try one with a higher proportion of robusta beans. The beans might not be fresh, so use fresh beans. The grinding level might not be suitable, so adjust the grinding unit to a finer setting. If the grinding level is too coarse, adjust the grinding unit to a finer setting and use a finer ground coffee.
How to fix fluctuating milk froth quality in Bosch CTL636E.6?
Fluctuating coffee or milk froth quality in your Bosch Coffee Maker can be due to limescale build-up; descale the appliance. Another cause might be a blocked suction pipe; in this case, clean the suction pipe.
Why is my Bosch CTL636E.6 coffee too bitter?
If your coffee from the Bosch Coffee Maker tastes too bitter, it could be due to a few reasons. The coffee might be ground too finely, so adjust the grinding level to a coarser setting or use a coarser ground coffee. Alternatively, the type of coffee might be unsuitable, so try changing the type of coffee you use.
Why is my Bosch CTL636E.6 leaking from the entire outlet?
If the drink runs out at the entire outlet during dispensing with your Bosch Coffee Maker, the lower part of the beverage outlet might be missing. Attach the lower part.
Why does my Bosch Coffee Maker coffee taste burnt?
If your coffee from the Bosch Coffee Maker tastes burnt, it could be because the brewing temperature is too high, so reduce the temperature. The coffee might also be ground too finely, so adjust the grinding level to a coarser setting or use a coarser ground coffee. Finally, the type of coffee might be unsuitable, so change the type of coffee.
What to do if Bosch CTL636E.6 shows Empty drip trays when they are empty?
If your Bosch Coffee Maker displays “Empty drip trays” even when they are empty, it might be because the drip tray is soiled and wet, so clean and dry the drip tray thoroughly. Alternatively, the emptying might not be detected when the appliance is switched off, so remove and re-insert the drip tray when the appliance is switched on.
Why is my Bosch Coffee Maker coffee too weak?
If your coffee from the Bosch Coffee Maker is too weak, it might be because the coffee strength selected is too weak, so raise the strength of the coffee. It could also be that ground coffee is jammed in the coffee drawer, so remove the ground coffee drawer, clean and dry thoroughly.
| Display | TFT Display |
|---|---|
| Milk System | Integrated Milk Container |
| Dimensions | 455 x 594 x 375 mm |
| Pump Pressure | 19 bar |
| One-Touch Functions | Yes |
| Milk Frother | Yes |
| Automatic Cleaning | Yes |
| Color | Black |
| Power Consumption | 1600 W |
| Programmable | Yes |
| Water Tank Capacity | 2.4 liters |
| Coffee Bean Container Capacity | 500 grams |
| Type | Built-in Fully Automatic Coffee Machine |
Guide to navigating and utilizing the manual's content effectively.
Defines the appliance's designated purpose and usage environment.
Crucial safety guidelines to prevent hazards during operation.
General description of the appliance and its components.
Explanation of buttons, display, and control ring functions.
Steps for first-time setup, operation, and shutdown.
Detailed explanation of the touch display and its features.
How to select, customise, and prepare various drinks.
Instructions for coffee beans, milk, ground coffee, and hot water.
Creating custom drinks and adjusting grind settings or locks.
Navigating and configuring appliance settings through the menu.
Connecting the appliance to Wi-Fi and using the Home Connect app.
Routine cleaning procedures for the appliance's exterior and components.
Detailed guides for cleaning the milk system and brewing unit.
Information on automated cleaning and descaling cycles.
Solutions for common problems and error messages.
Key technical data and parameters of the appliance.











