Manual for HWO45NB4T0B

Manual for HWO45NB4T0B

Brand: BOSCH

Category: Oven

Document Type: Manual

Language: EN

Available Languages: EN , ES

Uploaded: Nov. 21, 2025, 7:50 p.m.

Warranty Information

Refer to the manufacturer's warranty documentation for specific details on the warranty period and coverage.

Summary: This oven manual covers safety instructions, microwave warnings, environmental respect, identification, first use, control panel operation, main functions (Oven, Combined, Microwave cooking), a microwave cooking modes table, installation guidelines, electrical connection details, troubleshooting baking problems, and error handling.

First Use: Clean the oven, run it at maximum temperature for 30 minutes to eliminate residues, and clean accessories before use. Assemble/disassemble flat grills as shown.

Control Panel: Features first setup (language selection, time format), a main menu with Manual, My Taste, and Recipes options. Manual cooking allows selection between Microwave, Oven, and Combined modes. Microwave functions include Time Defrost and Weight Defrost. Oven functions include Multi-level, Grill, Multi-level + Grill, and Grill + Fan. Combined functions include Microwave Grill and Microwave + Convection + Fan.

Troubleshooting: Provides solutions for common baking problems like uneven browning, food dryness, slow cooking, and soggy crusts. It also covers error displays and smoke generation.

Troubleshooting and error codes

BAKING PROBLEMCAUSE
Food browns unevenly
  • Oven not preheated
  • Aluminum foil on oven rack or oven bottom
  • Baking utensil too large for recipe
  • Pans touching each other or oven walls
Food too brown on bottom
  • Oven not preheated
  • Using glass, dull or darkened metal pans
  • Incorrect rack position
  • Pans touching each other or oven walls
Food is dry or has shrunk excessively
  • Oven temperature too low
  • Oven not preheated
  • Oven door opened frequently
  • Tightly sealed with aluminum foil
  • Pan size too small
Food is baking or roasting too slowly
  • Oven temperature too low
  • Oven not preheated
  • Oven door opened frequently
  • Tightly sealed with aluminum foil
  • Pan size too small
Pies do not brown on bottom or have a soggy crust
  • Baking time not long enough
  • Using shiny steel pans
  • Incorrect rack position
  • Oven temperature is too low
Cakes are pale, flat, and may not be done inside
  • Oven temperature too low
  • Incorrect baking time
  • Cake tested too soon
  • Oven door opened too often
  • Pan size may be too large
Cakes are high in the middle and cracked on the top
  • Baking temperature too high
  • Baking time too long
  • Pans touching each other or oven walls
  • Incorrect rack position
  • Pan size too small
Pie crust edges are too brown
  • Oven temperature too high
  • Edges of crust too thin
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