58300000202443_ARA_EN_C
JANUARY 2018
Service Manual for Bosch 800 Series Built-in Wall Ovens
Page 36 of 43
Copyright by BSH Home Appliances Corporation
1901 Main St
▪
Suite 600
▪
Irvine, CA 92614
800 944-2904
This material is intended for the sole use of BSH authorized persons and may contain confidential and proprietary information. Any unauthorized review, use, copying, disclosure, or distribution in any format is prohibited.
Error Code Description
Cause/Notes
Suggested Action(s)
E126
E226
Cavity 1 / Cavity 2 door latch error
Switch signals lost by latch position switch.
If a locked or unlocked signal error occurs, all
heating elements will be disabled. Error may
be cleared only by a software reset. See Cavity
1 (upper) Small Load Schematic.
Check switch connections.
Check wires between connector and control
module.
Check switch operation.
E303
Electronics Delta temperature too
high
Temperature sensor on the control module
detects temperature changes that, over time,
are higher than limit value. Control turns off
heating elements and fan defaults to high
speed. When cavity temperature reaches
212°F/100°C, heating will resume and error
will be cleared. (If self-clean was running, it will
be disabled until a control reset is performed.)
Check connections to cooling fan and to
control module (see Small Load Schematic).
Check element operation.
Check for air obstruction or damaged
upper/lower ventilation trims.
Check for stuck relays.
7.2
Service Mode
Service mode provides access to Option Code settings, error
memory, relay tests, front panel tests, program version information
and EEPROM version information.
7.2.1 Accessing Service Mode
1. Press and hold
Enter, (1)
and
Bake
for 5 seconds, or until
Service Mode
appears in the display.
2. Press
Enter
to navigate through the menu. Additional
instructions will appear in the display.
3. Press
Oven Clear/Off
on single ovens or
Upper Clear/Off
on
double ovens to exit Service Mode.
The table that follows reflects the Service mode menu options
available.
Table 8 Error codes
