Brand: BOSCH
Category: Oven
Document Type: Manual
Language: EN
Available Languages: EN , ES
Manual for HBL 43./44./45./46. / HBN 44./45./46.
Uploaded: April 20, 2026, 7:56 p.m.
Warranty Information
Bosch warrants its built-in ovens against defects in material or workmanship for twelve (12) months from installation.
Oven Operation
- Manual Operation: Set the Timer/Manual Selector to Manual. Choose the desired cooking mode and temperature using the mode and temperature control knobs.
- Electronic Control: Use the programmer buttons to set clock, timer, cook time, start time, and delayed start.
- Immediate Start/Automatic Shut-Off: Set desired cooking function, temperature, and cook time. The oven will start immediately and shut off automatically.
- Delayed Start/Automatic Shut-Off: Set desired cooking function, temperature, start time, and cook time. The oven will begin cooking at the set start time and shut off automatically.
- Self-Cleaning: Remove racks and other items. Set the oven to Self Clean mode and select the desired cleaning duration. The oven will heat to high temperatures to burn off soil.
Troubleshooting and error codes
| PROBLEM | POSSIBLE CAUSE | SUGGESTION(S) |
|---|---|---|
| Nothing works | Oven not connected to correct electrical circuit. | Have oven connected to properly sized electrical power supply by a qualified electrician. |
| A household fuse may have blown or circuit breaker has tripped | Replace fuse or reset circuit breaker. | |
| Power supply connections are loose. | Have qualified electricain check connections. | |
| The oven will not heat | The Function Selector is in Off position | Turn the function selector to a cooking function. |
| The Temperature knob of the oven is not turned up to a temperature. | Set the Temperature knob to temperature desired. | |
| Timed mode is selected, but COOK TIME has not been set. | Check display and review instruction for programming oven. | |
| Delayed cooking has been selected and START TIME has not been reached. | Check time of day and check START TIME. Oven should start at preselected START TIME. To cancel delayed start press START TIME button twice. | |
| Clock displays incorrect time of day | Time of day not properly set. | See section of this manual headed Setting Electronic Clock. |
| Cooking results are not what was expected | The oven is not leveled. | Level oven. See Installation Instructions. |
| Oven temperature calibration differs from your previous oven. | The calibration of your old oven may have drifted gradually over time, while your new oven is more exact. Adjust oven temperature settings as needed. | |
| The oven was not preheated before baking. | Preheat oven when recipe calls for preheated oven. | |
| Incorrect cooking time, temperature or rack position being used. | Use only tested recipes from a reliable source. | |
| The recipe has not been tested or is not from a reliable source. | Refer to a reliable cookbook or recipe for recommended pan size. | |
| The pan is not the correct type or size. | Change temperature settings in convection bake as described on page 5 of this manual and increase baking time accordingly. | |
| Browning or baking results are not like they used to be in the former oven. | ||
| Door will not open | Oven is in SELF CLEAN and the oven temperature is above 560 °F. | Wait for oven to finish and cool down. |
| Oven has finished SELF CLEAN but oven temperature is still above 560 °F. | Wait for oven to cool. | |
| Oven light(s) will not work | Light bulb is burned out. | Replace bulb as described in this manual in section titled Replacing an Oven Light. |
| Oven is operating in SELF CLEAN. | Lights do not come on in SELF CLEAN. |