Table Of Contents - Bosch HBL8 50UC Series Service Manual

TABLE OF CONTENTS

1 General ........................................................................................ 3
1.1 Models................................................................................... 3
1.2 Features and Options............................................................ 3
1.3 Data Plate.............................................................................. 4
1.4 Warranty................................................................................ 4
2 Operation..................................................................................... 4
2.1 Element Duty Cycles ............................................................. 4
2.1.1 Using Table 3 (Element Duty Cycles During Preheat) ... 5
2.2 Sequence of Events .............................................................. 5
2.3 Cooling Fans ......................................................................... 7
3 Component Accessibility........................................................... 8
3.1 Serviceable from Front .......................................................... 8
3.2 Serviceable from Top ............................................................ 8
3.3 Serviceable from Rear........................................................... 8
4 Service and Repair ..................................................................... 8
4.1 Doors..................................................................................... 8
4.1.1 Removing and Replacing the Door(s) ............................ 8
4.2 Door Latch/Motor Assembly .................................................. 9
4.3 Lamps.................................................................................. 10
4.3.1 Replacing Lamps ......................................................... 10
4.4 High Temperature Cutout (HTC) ......................................... 11
4.5 Convection Fan and Ring Element...................................... 11
4.6 Temperature Sensor ........................................................... 12
4.6.1 Setting Temperature Offsets ........................................ 12
4.7 Broil Element ....................................................................... 13
4.8 User Interface...................................................................... 13
4.8.1 Removing the User Interface ....................................... 14
4.9 PC Control Module (Relay Board)....................................... 15
4.10 Power Supply Module...................................................... 18
4.11 Halogen Light Transformer(s).......................................... 18
4.12 Convection Fan Motor ..................................................... 18
4.13 Bake Element (Upper Oven)............................................ 18
4.13.1 Removing the Bake Element........................................ 18
4.13.2 Reinstalling the Bake Element ..................................... 19
4.14 Cooling Fan Motor (Upper Oven) .................................... 19
5 Error Codes .............................................................................. 19
5.1 Error Code Table ................................................................ 19
5.2 Service Mode / Setting Option Code .................................. 20
5.2.1 HBL3/HBN3 ................................................................. 20
5.2.2 HBL5/HBN5 ................................................................. 21
5.2.3 HBL8............................................................................ 21
5.3 Option Codes ...................................................................... 22
6 Demo Mode............................................................................... 22
7 Troubleshooting....................................................................... 22
7.1 Fault Tree Diagram ............................................................. 23
7.2 Fault Tree ........................................................................... 25
7.3 Testing ................................................................................ 33
8 Wiring Diagrams and Schematics .......................................... 33
8.1 Wire Color Key.................................................................... 33
8.2 Strip Diagrams .................................................................... 34
9 Additional References ............................................................. 34
9.1 QuickFinder ........................................................................ 34
9.2 Technical Support............................................................... 34
Service Manual for Bosch Built-in Wall Ovens
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