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.
Page 12 of 36
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