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
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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.
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