In this section, we will explain the display and controls.You will also find out about the various functions of your appliance.
Note: Depending on the appliance model, individual details and colours may differ.

You will find a brief explanation of the various buttons below. These buttons allow you to set your appliance simply and directly.
Buttons and their meaning: You will find a brief explanation of the various buttons below.

Rotary selector
Automatic door opening
Cooling fan
Changing the signal duration
Before usi ng f or t he f i r st timeThis section tells you what you need to do before using your microwave to prepare food for the first time. Read the section entitled "Safety information" beforehand. ~ "Important safety information" on page 4
Before you can use your new appliance, you will need to put the turntable in place correctly. You must also clean the cooking compartment and accessories.
Before using the appliance to prepare food for the first time, you must clean the cooking compartment and accessories.
How to put the turntable in place

Note: Never use the appliance without the turntable. Make sure that it is properly engaged.The turntable can turn clockwise or anti-clockwise.
When the appliance is first connected or after a power cut, three zeros will appear in the display panel.
button.
œ appears in the display and the indicator lamp above the
button lights up.
button again.The current time is set.
Hiding the clock
button and then press Stop. The display is blank.Resetting the clock
button. "12:00" appears in the display. Make settings as detailed in points 2 and 3.Change the clock, e.g. from summer to winter time
Cleaning the accessories
Mi c r o wa v eYou can use the microwave to cook, heat up or defrost food quickly.
To ensure optimum use of the microwave, please observe the notes on cookware and familiarise yourself with the data in the application tables at the end of the instruction manual. ~ "Tested for you in our cooking studio" on page 17
Try out the microwave straight away. You could heat up a cup of water for your tea, for example.
Use a large cup without any decorative gold or silver trim and place a teaspoon in it. Place the cup containing the water on the turntable, slightly off-centre.
A signal sounds after 1 minute and 30 seconds. The water is hot.
Warning – Risk of scalding! There is a possibility of delayed boiling when a liquid is heated. This means that the liquid reaches boiling temperature without the usual steam bubbles rising to the surface. Even if the container only vibrates a little, the hot liquid may suddenly boil over and spatter. When heating, always place a spoon in the container. This will prevent delayed boiling.

Not all cookware is microwavable. So that your food is heated and the appliance is not damaged, only use microwavable cookware.
Suitable cookware
Unsuitable cookware
Caution! Creation of sparks: Metal – e.g. a spoon in a glass – must be kept at least 2 cm from the cooking compartment walls and the inside of the door. Sparks can irreparably damage the glass on the inside of the door
Cookware test
Never switch on the microwave unless there is food inside. The short cookware test is the only exception to this rule.
Perform the following test if you are unsure whether your cookware is suitable for use in the microwave.
The cookware should remain cold or warm to the touch.
The cookware is unsuitable if it becomes hot or sparks are generated. In this case, stop the test.
Warning – Risk of burns! The accessible parts become very hot when in operation. Never touch hot parts. Keep children at a safe distance.
| Microwave power setting | Suitable for |
| 90 W | Defrosting delicate foods |
| 180 W | Defrosting and continued cooking |
| 360 W | Cooking meat and heating delicate foods |
| 600 W | Heating and cooking food |
| 900 W | Heating liquids |
Note: You can set the 900 W microwave power setting for 30 minutes, 600 W for 1 hour, the other power settings for 1 hour and 39 minutes respectively
Example: Microwave power output 600 W, cooking time 5 minutes

The cooking time counts down in the display.
The cooking time has elapsed
Changing the cooking time
Pausing the appliance
Cancelling operation
Note: You can also adjust the cooking time first and then the microwave power setting.
Me mor yThe memory function allows you to save the setting for a dish and call it up at any time.
The memory function is useful if you prepare one dish particularly frequently
Example: 360 W, 25 minutes
button. The indicator light above the button lights up.
button.The clock reappears. The setting has been saved.
It is very easy to start the saved programme. Place your meal into the appliance. Close the appliance door.
button. The saved settings are displayed.The cooking time counts down in the display
The cooking time has elapsed
A signal sounds. Open the appliance door or press Stop. The clock reappears.
Pausing the appliance
Cancelling
You can prepare food really easily using the various programmes. You select a programme and enter the weight of your food. The program then applies the most suitable settings.
Note: You can choose from 7 programmes
Once you have selected a programme, make settings as follows:
button repeatedly until the required programme number appears. The indicator light above the button lights up.

The cooking time for the programme starts counting down.
The cooking time has elapsed
Correction
Pausing the appliance
Cancelling
You can use the 4 defrosting programmes to defrost meat, poultry and bread.
Notes

With the 3 cooking programmes, you can cook rice, potatoes or vegetables.
Notes

Your appliance has basic settings that you can change to suit your needs.
| Setting Options | |||
| Button tone | ![]() | Switched on |
| Switched off Button tone (will remain active for the start and stop buttons) | ||
| Demo mode |
| The appliance is switched off. You can use the buttons and the display, but the buttons will not activate any function on the appliance (i.e. the microwave has no power). Demo mode is mainly used by dealers. |
* Factory setting (factory settings may vary depending on the appliance model) | |||
You can change the button tone on your appliance if you wish
Changing the button tone
The appliance must be switched off when you do this.
will appear in the display.
will start flashing in the display.
.The button tone has been switched off.
You can change this setting at any time.
With good care and cleaning, your appliance will retain its appearance and remain fully functioning for a long time to come. We will explain here how you should correctly care for and clean your appliance.
Warning – Risk of electric shock! Do not use any high-pressure cleaners or steam cleaners, which can result in an electric shock.
Warning – Risk of injury! Scratched glass in the appliance door may develop into a crack. Do not use a glass scraper, sharp or abrasive cleaning aids or detergents.
Warning – Risk of serious harm to health! The surface of the appliance may become damaged if it is not cleaned properly. Microwave energy may escape. Clean the appliance on a regular basis, and remove any food remnants immediately.~ "Cleaning agent" on page 14
Warning – Risk of electric shock! Do not immerse the appliance in water or clean under a jet of water.
Note: Unpleasant odours, for example after fish has been prepared, can be removed very easily. Add a few drops of lemon juice to a cup of water. Always place a spoon in the container to prevent delayed boiling. Heat the water for 1 to 2 minutes at maximum microwave output.
To ensure that the different surfaces are not damaged by using the wrong cleaning agent, observe the information in the table.
Do not use:
Wash new sponge cloths thoroughly before use.
| Area Cleaning product | |
| Appliance front | Hot soapy water: Clean using a dish cloth and then dry with a soft cloth. Do not use metal or glass scrapers for cleaning. |
| Appliance front with stainless steel | Hot soapy water: Clean using a dish cloth and then dry with a soft cloth. Remove splashes and patches of limescale, grease, starch and albumin (e.g. egg white) immediately. Corrosion can form under these patches or splashes. Special stainless-steel cleaning products are available from the after-sales service or from specialist retailers. Do not use glass cleaners or metal or glass scrapers for cleaning. |
| Cooking compartment made of stainless steel | Hot soapy water or vinegar solution: Clean using a dish cloth and then dry with a soft cloth.Do not use oven spray or any other aggressive oven cleaners or abrasive materials. Scouring pads, rough sponges and pan cleaners are also unsuitable. These items scratch the surface. Allow the interior surfaces to dry completely. |
| Recess in the cooking compartment | Damp cloth: Water must not be allowed to run into the appliance through the turntable drive. Dry the turntable drive with a cloth. |
| Turntable and roller ring | Hot soapy water: When placing the turntable back into its recess, it must engage properly. |
| Door panels | Glass cleaner: Clean with a dish cloth. Do not use glass scrapers. |
hoot i ngIf a fault occurs, there is often a simple explanation. Before calling the after-sales service, please refer to the fault table and attempt to correct the fault yourself.
Tip: If a dish does not turn out exactly as you wanted, refer to the following chapter, where you will find lots of tips and notes relating to the optimum settings.~ "Tested for you in our cooking studio" on page 17
Warning – Risk of electric shock! Incorrect repairs are dangerous. Repairs may only be carried out and damaged power cables replaced by one of our trained after-sales technicians. If the appliance is defective, unplug the appliance from the mains or switch off the circuit breaker in the fuse box. Contact the after-sales service
Fault table
| Fault | Possible cause Remedy/information | |
| The appliance is not working | The plug is not plugged into the mains | Connect the appliance to the electricity supply |
| Power failure | Check whether other kitchen appliances are working | |
| The circuit breaker/fuse is faulty | Check in the fuse box to make sure that the circuit breaker/fuse for the appliance is in working order | |
| Faulty operation | Switch off the circuit breaker/fuse for the appliance in the fuse box and switch it back on after approximately 10 seconds | |
| Three zeros are lit on the display. | Power failure | Reset the time. |
| The appliance is not operating. A cooking time is shown on the display. | The rotary selector has been accidentally turned. | Press the "stop" button. |
| The "start" button has not been pressed after the setting was applied. | Press the "start" button or cancel the setting by pressing the "stop" button. | |
| The microwave is not working. | The door has not been properly closed. | Check whether food remnants or debris is/are trapped in the door. |
| The "start" button has not been pressed. | Press the "start" button. | |
| It is taking longer than usual for food to heat up | The microwave power output has been set too low. | Select a higher microwave power setting. |
A larger amount of food than usual has been placed in the appliance. | Double the amount – double the time. | |
| The food was colder than usual. | Stir or turn the food during heating. | |
| The turntable is making a scraping or grinding noise. | Dirt or debris in the area around the turntable drive. | Clean the roller ring and the recess in the cooking compartment. |
| The microwave has stopped for no apparent reason. | The microwave has a fault. | If this fault recurs, please call the after-sales service. |
An is shown on the display. | The appliance is in demo mode | Deactivate demo mode. ~ "Basic settings" on page 14 |
| Error message "E - 3" | Fault in automatic door opening system | If an error message is displayed, switch the appliance off and on again; if the message disappears, it was a one-off problem. If the fault occurs again or the error message is still displayed, please contact the aftersales service and provide the fault code |
Reference file: Bosch BFL553MS0A 25L Serie 4 Built-In Microwave Oven 900W
Series: Serie 4
Additionally, the document applies to other Bosch models: BFL554MS0B, BFL553MS0B, BFL553MW0B