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The ring element (240V 2000W) and/or fan blade are easily accessed

on the rear wall of the oven cavity behind the convection baffle. The

convection fan motor is accessible only from the rear of the unit.

Refer to the Element Strip Diagram to test the element at the control

module, or

1. Remove 2 T20 screws on either side of the element terminals.

2. Pull the element toward you so that terminal wires are inside

the oven cavity.

3. Disconnect the wires from the terminals.

4. Use an ohmmeter to check for resistance of ~29 ohms.

4.6

Temperature Sensor

Use an ohmmeter to check the resistance of the sensor. Normal

ranges (based on cavity temperature) are shown in Table 5.

Table 5 Normal temperature sensor resistance readings temperature

Real-time cavity and probe temperatures can be measured while in

Service Mode (refer to the section entitled Service Mode or the

Service Guide for instructions). After entering Service mode, advance

through the HBL8, HBL5/HBN5 menu options by pressing

until the Oven temp or Probe temp option is reached. On the

PREHEAT

HBL3/HBN3 models, press

TEMP

4.6.1

Setting Temperature Offsets

In some cases, it may be necessary to adjust the oven temperature if

food is consistently under- or over-cooked. Temperature offsets can

be entered by the customer from the Customer Settings or Setup

menu to raise or lower the cavity temperature during Bake,

Convection Bake, Roast, Convection Roast, and Speed Convection

modes (all heating modes which operate between 250°F and 550°F).

A +25° offset will result in a cavity temperature of 350° when the

temperature knob is set to 325° for any of the cooking modes listed

above. Similarly, a -25° offset will result in a cavity temperature of

300° when the temperature knob is set to 325°.

The adjusted temperature cannot be less than 250°F or greater than

550°F.

4.6.1.1 HBL3/HBN3

The oven must be turned off with no timer running in order to access

the menu.

1. Press and hold Temp for two seconds to access the Customer

Settings menu.

2. Press Timer to advance through the menu.

3. When CS7: Oven Temperature Offset (for upper/single oven)

or CS8: Oven Temperature Offset (for lower oven) appears,

use the Settings dial to set the desired value.

4. Confirm by pressing Timer.

5. Press Temp to exit the Customer Settings menu.

4.6.1.2 HBL5/HBN5

The Cooking Mode dial and Settings dial must be in the Off position

in order to access the menu.

Service Manual for Bosch Built-in Wall Ovens

FAST

to advance through the menu.

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