Bosch HQA.34B.3 Oven

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1 Safety

1.1 General Information

• Read this instruction manual carefully.
• Keep the manual and product information safe for future reference or for the next owner.
• Do not connect the appliance if it has been damaged in transit.

1.2 Intended Use

This appliance is designed for installation into kitchen units only. Only a licensed professional should connect appliances without plugs. Damage from incorrect connection is not covered by warranty.

Use the appliance only for:

• Preparing meals and drinks.
• In private households and enclosed domestic environments.
• Up to an altitude of 4000 m above sea level.

Do not use the appliance with an external timer or remote control.

1.3 Restriction on User Group

Children aged 8 and over, and individuals with reduced physical, sensory, or mental capabilities, or lack of experience/knowledge, may use the appliance if supervised or instructed on safe use and potential dangers. Children must not play with the appliance. User maintenance is only permitted for those aged 15 and over, under supervision. Keep children under 8 away from the appliance and power cable.

1.4 Safe Use

Always place accessories in the cooking compartment correctly. Refer to "Accessories", Page 8.

WARNING – Risk of Fire!

Combustible objects left in the cooking compartment can catch fire. Never store combustible objects inside. If smoke appears, switch off the appliance or pull the plug and close the door to stifle flames. Loose food remnants, fat, and meat juices can ignite. Remove food residues before use. Greaseproof paper can catch fire if it comes into contact with heating elements; always cut it to size and secure it with a plate or baking tin.

WARNING – Risk of Burns!

Appliance parts become hot during use. Exercise caution to avoid touching heating elements. Keep children under 8 away. Accessories and cookware also get very hot; use oven gloves. Alcoholic vapours can ignite, causing hot steam and flames to escape; use only small quantities of drinks with high alcohol content and do not heat undiluted spirits (≥ 15% vol.). Open the appliance door carefully.

WARNING – Risk of Scalding!

Accessible parts become hot during operation. Never touch hot parts. Keep children at a safe distance. Hot steam can escape when opening the door, even if not visible. Never pour water into a hot cooking compartment.

WARNING – Risk of Injury!

Scratched glass in the door may crack. Do not use abrasive cleaners or sharp scrapers. Parts may have sharp edges; handle with care and wear gloves. Hinges can trap fingers; keep hands away. Components inside the door may have sharp edges; wear gloves.

WARNING – Risk of Electric Shock!

Improper repairs are dangerous. Only trained specialists should perform repairs using genuine spare parts. If the power cord is damaged, it must be replaced by trained staff.

2 Preventing Material Damage

2.1 General

ATTENTION! Alcoholic vapours can ignite and cause permanent damage. The door may spring open, panels may shatter, and the compartment may deform. Do not heat spirits (≥ 15% vol.) undiluted.

Operating the appliance with water on the floor at temperatures above 120°C will damage the enamel. Do not use if water is present; wipe it dry before operation.

Objects on the cooking compartment floor above 50°C can cause heat buildup, affecting cooking times and damaging enamel. Do not place accessories, greaseproof paper, or foil on the floor. Do not place cookware on the floor at temperatures above 50°C, except for the water bowl for steam assistance.

Water inside a hot compartment creates steam, which can cause damage. Never pour water into a hot compartment. Do not place water reservoirs on the floor (except the steam water bowl). Prolonged moisture can lead to corrosion; dry the compartment after use. Do not store moist food with the door closed. Do not trap anything in the door. Fruit juice can leave stains; avoid overfilling baking trays with juicy fruit flans.

Using oven cleaner in a hot compartment damages enamel. Never use oven cleaner when the compartment is warm. Remove food remnants before heating. A dirty seal can prevent the door from closing properly, potentially damaging adjacent units; keep the seal clean and ensure it is not damaged or missing. Do not place objects on the appliance door. Accessories may scratch the door pane when closing; push them in fully. Aluminium foil contacting the door pane can cause permanent discolouration.

3 Environmental Protection and Saving Energy

3.1 Disposing of Packaging

Packaging materials are environmentally compatible and recyclable. Sort components by type for disposal.

3.2 Saving Energy

• Only preheat if the recipe requires it. Not preheating can save up to 20% energy.
• Use dark-coloured, black-coated, or enamelled baking tins as they absorb heat better.
• Open the appliance door as little as possible to maintain temperature and avoid reheating.
• Bake multiple dishes in succession or parallel to utilize residual heat.
• Switch off the appliance 10 minutes before the end of long cooking times to finish with residual heat.
• Remove unused accessories to avoid heating them.
• Defrost frozen food before cooking to save energy.

Product information is available online and on the energy label. Standby mode requires max. 1W.

4 Familiarising Yourself with Your Appliance

4.1 Control Elements

The control panel allows configuration of all functions and provides operating status information. (Note: Appearance may vary by model.)

1. Buttons and Display: Touch-sensitive buttons. The display shows active function symbols and time-setting options.

2. Function Selector: Sets heating types and functions. Turn clockwise or anti-clockwise from the zero setting. Can be pushed in.

3. Temperature Selector: Sets temperature or other function settings. Turn clockwise until resistance; cannot be turned past this point. Can be pushed in.

4.2 Buttons and Display

Use buttons to set functions. The display shows settings. Active functions are indicated by illuminated symbols.

4.3 Types of Heating and Functions

3D Hot Air: Bake or roast on one or more levels. Fan distributes heat evenly from the rear heating element.

Hot Air Steam: Ideal for baking bread and cakes, and frying meat. Fan distributes heat and steam evenly. Use water bowl. Refer to "Steam Assistance", Page 12.

Hot Air Gentle: Cooks dishes gently on one level without preheating. Fan distributes heat evenly. Food cooks in phases using residual heat. Keep door closed. Select temperature between 120°C and 230°C.

Pizza Setting: Cooks pizza or food requiring heat from below. Uses bottom and rear heating elements.

Bottom Heating: For final baking or cooking in a bain marie. Heat is emitted from below.

Full-surface Grill: Grills flat items like vegetables, sausages, or toast. Gratinates food. The entire area below the grill element heats up.

Hot Air Grilling: Roasts poultry, whole fish, or large meat pieces. Grill element and fan alternate. Fan circulates hot air.

Top/Bottom Heating: Traditional baking/roasting on one level, good for cakes with moist toppings. Heat emitted evenly from above and below.

Other Functions

• Rapid Heating: Quickly preheats the cooking compartment without accessories. Refer to "Rapid Heating", Page 11.
• Lighting: Lights up the cooking compartment without heating. Refer to "Lighting", Page 8.

4.4 Temperature and Setting Levels

Settings vary by heating type. Note: Temperatures above 250°C reduce to approx. 240°C after 10 minutes (except for Top/Bottom or Bottom heating).

5 Accessories

Use original Bosch accessories. They may deform when hot but regain shape when cool.

Accessories

5.1 Locking Function

Prevents accessories from tilting when pulled out halfway. Ensure accessories are inserted correctly for this function.

5.2 Sliding Accessories into the Cooking Compartment

Always slide accessories in correctly:

1. Turn accessories so the notch is at the rear and facing downwards.
2. Insert accessories between the two guide rods for the shelf position.

Wire rack: Insert with the open side facing the appliance door and the curved lip downwards.

Baking tray (e.g., universal pan): Slide in with the sloping edge facing the appliance door.

Push accessories fully in, ensuring they do not touch the appliance door. Remove unused accessories during operation.

Combining Accessories

Combine a wire rack with a universal pan to catch drips:

1. Place the wire rack on the universal pan so its spacers are on the rear edge.
2. Insert the universal pan between guide rods, with the wire rack on top of the upper guide rod.

Refer to diagrams for correct insertion.

6 Before Using for the First Time

6.1 Initial Use

Configure settings for initial startup and clean the appliance and accessories.

Setting the Time on the Clock

After connection or power failure, the time flashes. Set the current time. Function selector must be at 'Off' position.

1. Use the +/- buttons to set the time.
2. Press the button.

The set time appears on the display.

6.2 Cleaning the Appliance Before First Use

Clean the cooking compartment and accessories before first use:

1. Remove all packaging and adhesive tape.
2. Wipe smooth surfaces with a soft, damp cloth.
3. Set heating type to 3D Hot Air, maximum temperature, for 1 hour. Ventilate the kitchen.
4. After cooling, clean smooth surfaces with detergent solution and a cloth.
5. Clean accessories with soapy water and a cloth or brush.

7 Basic Operation

7.1 Switching the Appliance On and Off

1. To switch on, turn the function selector to any position other than 'Off' ( ).
2. To switch off, turn the function selector to the 'Off' ( ) position.

7.2 Setting the Type of Heating and Temperature

1. Use the function selector to set the heating type.
2. Use the temperature selector to set the temperature or grill setting.

The appliance starts heating after a few seconds. Switch off when food is ready. Refer to "Types of Heating and Functions", Page 6 for guidance.

You can also set cooking time and end time. Refer to "Time-Setting Options", Page 11.

Changing Heating Type/Temperature: Adjust at any time using the respective selectors. Changes apply after a few seconds.

8 Rapid Heating

Use rapid heating to shorten preheat time. Do not place food in the compartment until rapid heating has ended.

1. Select rapid heating using the function selector.
2. Set the temperature using the temperature selector.

Use only when a temperature over 100°C is set. Rapid heating starts after a few seconds. An audible signal and the heating indicator going out signals its end. Then select a suitable heating type (e.g., 3D Hot Air, Top/Bottom Heating) and place food in the compartment.

9 Time-Setting Options

Control operation using various time-setting options.

9.1 Overview of Time-Setting Options

Use the button to select options:

9.2 Setting the Timer

The timer runs independently, up to 23 hours 59 minutes. It has its own signal. Timer and cooking time cannot count down simultaneously.

1. Press repeatedly until is highlighted.
2. Use +/- buttons to set duration (increments up to 10 mins, then larger).

Timer starts counting down. An audible signal sounds when time elapses. Press any button to switch off. Change or cancel timer as needed.

9.3 Setting the Cooking Time

Set cooking time up to 23 hours 59 minutes. Heating type and temperature must be set.

1. Press repeatedly until is highlighted.
2. Use +/- buttons to set time (1-min increments up to 1 hr, then 5-min increments).

Appliance starts heating. Signal sounds when time elapses. Press any button to end signal or press + to set another time.

9.4 Setting the End Time

Delay cooking finish time up to 23 hours 59 minutes. Cannot be set for grill function. Do not delay end time once operation has begun to avoid spoilage.

Requirements: Heating type, temperature/setting, and cooking time must be set.

1. Press repeatedly until is highlighted.
2. Press +/- buttons to set end time.

Appliance starts heating at the calculated start time. Change or cancel end time as needed.

9.5 Setting the Time on the Clock

After power connection or failure, the time flashes. Set current time. Function selector must be at 'Off' ( ).

1. Use +/- buttons to set time.
2. Press button.

Change time by pressing and holding until clock flashes, then use +/- buttons.

10 Steam Assistance

Steam assistance provides a crispy crust and juicy interior. It requires the water bowl.

WARNING – Risk of Burns! Water bowl gets very hot during operation. Never remove it while hot. Only remove once cooled.

WARNING – Risk of Scalding! Hot steam may escape when opening the door. Open carefully and keep children away. Use only the provided water bowl. Never fill while cooking.

10.1 Before Using the Steam Function

Ensure sufficient water in the bowl.

Inserting a Water Bowl

1. Place water bowl in the middle of the cooking compartment floor.
2. Fill sufficiently (markings: 100ml, 150ml, 200ml; Max. 250ml).

Refer to "How it Works", Page 21 for water volumes.

10.2 Setting Steam-Assisted Cooking

Requirements: Cold compartment, filled water bowl.

1. Set heating to Hot Air Steam.
2. Set temperature above 100°C for optimal steam.

Appliance heats up. Switch off when food is ready. Dry the compartment. Refer to "After Using Steam Operation", Page 13.

10.3 After Using Steam Operation

Dry the appliance after each steam operation. Clean the water bowl and dry the compartment. Remove limescale with vinegar solution. Leave door open or briefly heat at 50°C with 3D Hot Air to dry.

11 Childproof Lock

Secures the appliance against accidental switching or setting changes. Activate/deactivate by pressing and holding the button until 'SAFE' appears/disappears. Childproof lock deactivates after a power cut.

12 Cleaning and Servicing

Regular cleaning and maintenance ensure efficient operation.

12.1 Cleaning Products

Use only suitable cleaning products to avoid damaging surfaces.

WARNING – Risk of Electric Shock! Do not use steam or high-pressure cleaners.

ATTENTION! Unsuitable products can damage surfaces. Avoid harsh, abrasive cleaners, high alcohol content products, hard scouring pads, or cleaning sponges. Do not use special cleaners on a hot appliance.

12.2 Suitable Cleaning Agents

Use appropriate agents for different surfaces:

12.3 Cleaning the Appliance

Clean only as specified with suitable products.

WARNING – Risk of Burns! Allow appliance to cool before cleaning.

WARNING – Risk of Fire! Remove food residues before use.

1. Clean with hot soapy water and a dish cloth.
2. Dry with a soft cloth.

12.4 Cleaning Self-Cleaning Surfaces

The back panel is self-cleaning. If surfaces are not cleaning adequately, heat the compartment to the correct temperature.

ATTENTION! Regular cleaning is important. If dark stains appear, heat the compartment. Do not use oven cleaner or abrasive aids. Dab off spills immediately with water and a sponge cloth; do not rub.

1. Remove accessories and shelf supports.
2. Remove coarse dirt from enamel surfaces, door interior, and light cover with soapy water and a soft cloth.
3. Ensure compartment is empty.
4. Set 3D Hot Air, maximum temperature, for 1 hour.
5. After cooling, wipe with a damp cloth.

Note: Marks on self-cleaning surfaces are normal and do not affect cleaning ability.

13 Cleaning Aid

A quick method for cleaning the cooking compartment. It softens dirt by evaporating soapy water, making it easier to remove.

13.1 Setting the Cleaning Aid

WARNING – Risk of Scalding! Never pour water into a hot compartment.

Requirements: Compartment must have cooled down.

1. Remove accessories.
2. Mix 0.4L water with a drop of washing-up liquid in the compartment floor. Close door.
3. Set heating to Bottom Heat, 80°C.
4. Press repeatedly until is highlighted.
5. Set time to 4 minutes using +/- buttons.

Appliance heats, then cools for approx. 20 minutes.

13.2 Cleaning the Cooking Compartment After Using Cleaning Aid

ATTENTION! Prolonged moisture can cause corrosion. Wipe and dry the compartment completely.

1. Wipe out remaining water with an absorbent cloth.
2. Clean enamel surfaces with a dish cloth or soft brush; use stainless steel scouring pad for stubborn remnants.
3. Remove limescale with vinegar solution, then clean water.
4. Dry with a soft cloth.
5. Leave door open (approx. 30°) for 1 hour to dry, or heat at 50°C with 3D Hot Air for 5 minutes with the door open.

14 Appliance Door

The appliance door can be disassembled for thorough cleaning.

14.1 Detaching the Appliance Door

WARNING – Risk of Injury! Parts inside the door may have sharp edges; wear gloves. Hinges move when opening/closing; keep fingers away.

1. Open the appliance door fully.
2. Open the locking levers on the hinges. The levers are now secured.
3. Close the appliance door fully.
4. Carefully place the door on a level surface.

14.2 Attaching the Appliance Door

WARNING – Risk of Injury! Handle hinges with care; they can snap shut. Ensure locking levers are fully closed or fully open when detaching.

1. Slide the door onto the hinges as far as it will go.
2. Open the appliance door fully.
3. Close the locking levers. The door is now secured.
4. Close the appliance door.

14.3 Removing the Door Panes

WARNING – Risk of Injury! Handle hinges with care; keep fingers away from moving parts. Components inside may have sharp edges; wear gloves.

1. Open the appliance door fully.
2. Open locking levers on hinges.
3. Close appliance door fully.
4. Push on the door cover from the outside to release it. Remove the cover.
5. Lift out the inner pane and set it down carefully.
6. Open the appliance door and remove the door seal.
7. Lift out the intermediate pane and set it down carefully.
8. If necessary, remove the condensate trough for cleaning.
9. Clean removed door panels with glass cleaner and a soft cloth.
10. Clean condensate trough with hot soapy water.
11. Clean the appliance door. Refer to "Suitable Cleaning Agents", Page 14.
12. Dry door panels and refit them. Refer to "Fitting the Door Panes", Page 18.

14.4 Fitting the Door Panes

WARNING – Risk of Injury! Handle hinges with care; keep fingers away from moving parts. Components inside may have sharp edges; wear gloves.

1. Open the appliance door fully.
2. Open locking levers on hinges.
3. Close appliance door fully.
4. Slide the inner pane into the left- and right-hand retainers.
5. Push the inner pane upwards until it is in the retainers.
6. Push the inner pane upwards until it is in the retainers.
7. Put the door cover into position and push down until it clicks.
8. Open the appliance door fully.
9. Close the locking levers on the hinges. The door is secured.
10. Close the appliance door.

Note: Do not use the cooking compartment until door panes are correctly fitted.

15 Shelf Supports

Remove shelf supports for cleaning the rails or compartment.

15.1 Detaching the Shelf Supports

WARNING – Risk of Burns! Shelf supports get very hot. Never touch when hot. Allow to cool. Keep children away.

1. Lift the rail forwards slightly and detach it.
2. Pull the rail forward and remove it.
3. Clean the rail.

15.2 Attaching the Shelf Supports

Note: Rails fit only on the right or left.

1. Push the rail into the rear socket until it rests against the wall, then push it back.
2. Push the rail into the front socket until it rests against the wall, then press it downwards.

16 Troubleshooting

Rectify minor faults yourself. Refer to this information before contacting service.

WARNING – Risk of Injury! Improper repairs are dangerous. Only trained specialists should perform repairs. If defective, call Customer Service.

WARNING – Risk of Electric Shock! Only trained specialists for repairs. Use genuine spare parts. Replace damaged power cords only with trained specialist parts.

16.1 Malfunctions

16.2 Replacing the Oven Light Bulb

Replace bulb if it fails. Use only heat-resistant, 40-43W, 230V halogen bulbs from after-sales service or specialist retailers. Handle new bulbs with a clean, dry towel.

WARNING – Risk of Burns! Appliance and parts get hot. Avoid touching heating elements. Keep children away.

WARNING – Risk of Electric Shock! Bulb socket contacts are live when changing. Switch off appliance and unplug or switch off fuse before changing. Use gloves or a tea towel.

WARNING – Risk of Injury! Glass cover may break; exercise caution when installing/removing. Use gloves or a tea towel.

Requirements: Appliance disconnected from power, cooled down, new bulb ready.

1. Place tea towel in compartment.
2. Turn glass cover anti-clockwise to remove.
3. Pull out halogen bulb without turning.
4. Insert new bulb firmly, ensuring pins are correct.
5. Attach sealing ring if present.
6. Screw in glass cover.
7. Remove tea towel.
8. Connect appliance to power supply.

17 Disposal

17.1 Disposing of Old Appliance

Recycle valuable raw materials. Unplug, cut power cord, and dispose of environmentally. Information available from dealers or local authorities. Appliance is labelled according to EU Directive 2012/19/EU (WEEE).

18 Customer Service

Warranty details are available from after-sales service, retailer, or website. Contact Customer Service with product number (E-Nr.) and production number (FD). Contact details are in the service directory or on the website. This product contains energy efficiency class G light sources.

18.1 Product Number (E-Nr.) and Production Number (FD)

Find E-Nr. and FD on the appliance's rating plate (visible when door is open). Make a note of these details and the service telephone number.

19 How it Works

Find ideal settings for various foods, accessories, and cookware. Recommendations are tailored to your appliance.

19.1 General Cooking Tips

• Temperature and cooking time depend on food amount and recipe. Use lower values to start.
• Settings apply to cold compartment. Preheat if necessary, but only place accessories after preheating is complete.
• Remove unused accessories.
• ATTENTION! Acidic food can damage wire rack; do not place directly on it.
• Information for Nickel Allergy Sufferers: Small amounts of nickel may pass into food in rare cases.

Suitable accessories can be purchased from customer service, specialist retailers, or online. Refer to "Other Accessories", Page 10.

19.2 Notes on Baking

Use indicated shelf positions:

Notes: When baking on multiple levels, use Hot Air. Baked goods may not be ready simultaneously. Position tins/dishes offset on shelves. Use dark-coloured metal baking tins for best results.

19.3 Notes on Roasting and Grilling

Settings assume unstuffed, chilled food placed in a cold compartment.

• Larger food requires lower temperature and longer time.
• Turn food after 1/2 to 2/3 of cooking time.
• When turning poultry, place breast side or skin side underneath first.

Roasting and Grilling on Wire Rack: Good for large poultry or multiple pieces. Add up to 1/2 litre water to universal pan to catch juices. Keep door closed when grilling. Place food on wire rack, universal pan below (slanted edge towards door) to catch drips.

Roasting in Cookware: Using lidded cookware keeps compartment cleaner. Glass cookware is best.

Cookware without Lid: Use deep roasting dish. Place on wire rack. Use universal pan if no suitable cookware.

Cookware with Lid: Place on wire rack. Meat/poultry/fish can crisp up in covered dish. Use a roasting dish with a glass lid. Set higher temperature.

WARNING – Risk of Injury! Hot glass cookware on wet/cold surface may shatter. Place hot ovenware on a dry mat.

WARNING – Risk of Scalding! Hot steam may escape from lids; lift lid away from you. Keep children away.

19.4 List of Foods

Recommended settings for various foods:

19.5 Special Cooking Methods and Other Applications

Steam Assistance: Produces crispy crust, juicy interior. Minimal volume reduction.

Recommended Settings for Steam-Assisted Cooking:

20 Installation Instructions

Observe installation information carefully.

20.1 General Installation Instructions

Ensure safe operation by installing to a professional standard. The installer is liable for damages from incorrect installation. Check for damage after unpacking; do not connect if damaged. Remove all packaging and film before startup. Follow accessory installation sheets. Units must be heat-resistant (95°C for fitted units, 70°C for adjacent fronts). Do not install behind decorative doors due to overheating risk. Carry out cutout work before installation. Position on a horizontal surface. Mains socket must be in the hatched area or outside the installation area. Secure unsecured units to the wall.

WARNING – Risk of Fire! Do not use extended power cords or non-approved adapters. Use only manufacturer-approved cords/adapters. Contact an electrician if the power cord is too short.

ATTENTION! Do not carry or hold the appliance by the door handle, as it cannot support the weight.

Wear protective gloves as accessible parts during installation may have sharp edges.

20.2 Appliance Dimensions

Refer to diagrams for appliance dimensions (figures in mm).

20.3 Installation Below a Worktop

Observe dimensions and instructions. Ensure ventilation cut-out in intermediate floor. For induction hobs, do not seal gap between worktop and appliance. Secure worktop to fitted unit. Follow hob installation instructions.

20.4 Installation in a Tall Unit

Observe dimensions and instructions. Ensure ventilation cut-out. If tall unit has an additional back panel, remove it. Install only to a height allowing easy accessory removal.

20.5 Installing Two Appliances on Top of Each Other

Observe dimensions and instructions. Ensure ventilation cut-out in intermediate floor. Provide at least 200 cm² ventilation opening in base area (trim base panel or fit grille). Ensure air exchange.

20.6 Corner Installation

Observe dimensions and instructions. Ensure door can be opened fully by considering minimum dimensions for unit front thickness and handle.

20.7 Electrical Connection

Connect safely to the electrical system. Appliance is protection class I; requires protective earth connection. Fuse protection must match power rating and local regulations. Disconnect from power supply during installation. Use only provided power cable. Plug cable into rear until it clicks. A 3m cable is available from customer service.

Connection: Identify phase/neutral conductors. Connect wires according to colour coding: Green/yellow = Protective conductor, Blue = Neutral, Brown = Phase. Ensure correct connection to prevent damage.

The power cable must only be replaced by the original manufacturer's cable. Contact protection must be guaranteed by installation.

Electrically connect with protective contact plug: Use only correctly installed protective contact sockets. Insert plug. Mains plug must be accessible after installation; if not, integrate an isolating switch.

Electrically connecting without protective contact plug: Only licensed specialists may connect. Damage from incorrect connection is not covered by warranty. Integrate an isolating switch.

20.8 Installing the Appliance

1. Slide appliance in fully and centre it.
2. Screw appliance into place.

Note: Do not close gap between worktop and appliance with battens. Do not fit thermal insulation strips to side panels.

20.9 For Handleless Kitchens with Vertical Bar Handle Strips

1. Attach suitable filling pieces on both sides to cover sharp edges and ensure safe installation.
2. Secure filling piece to unit.
3. Pre-drill filling piece and unit for screw connection.
4. Secure appliance with a suitable screw.

20.10 Removing the Appliance

1. Disconnect appliance from power supply.
2. Undo fastening screws.
3. Lift appliance slightly and pull it out completely.