Bosch HBL35 User Guide

English 17

Troubleshooting Chart

Oven door is 
locked and will 
not open, even 
after cooling.

Turn the oven off at the circuit 
breaker and wait five minutes. Turn 
breaker back on. The oven should 
reset itself and will be operable.

Oven is not 
heating.

Check circuit breaker or fuse box to 
your house. Make sure there is 
proper electrical power to the oven. 
Be sure oven temperature has been 
selected.

Oven is not 
cooking evenly.

Refer to cooking charts for 
recommended rack position. Check 
"Getting the Most Out of Your 
Appliance" for tips and suggestions.

Baking results 
are not as 
expected.

Refer to cooking charts for 
recommended rack position. Check 
"Getting the Most Out of Your 
Appliance" for tips and suggestions. 
Adjust oven calibration if necessary. 
See "Oven Temperature Offset" 
under "Customer Settings".

Food takes 
longer to cook 
than expected.

The oven is carefully calibrated to 
provide accurate results. However, 
the temperature can be offset if food 
is consistently too brown or too light. 
See "Oven Temperature Offset" 
under "Customer Settings".

Food is 
overcooked.

The oven is carefully calibrated to 
provide accurate results. However, 
the temperature can be offset if food 
is consistently too brown or too light. 
See "Oven Temperature Offset" 
under "Customer Settings".

Convection 
Bake results are 
not as expected 
(some models).

The oven temperature must be 
manually reduced by 25 ºF. Refer to 
cooking charts and tips for rack 
positions, cooking times and pan 
selection. Adjust oven calibration if 
necessary. See "Oven Temperature 
Offset" under "Customer Settings".

Oven 
temperature is 
too hot or too 
cold.

The oven thermostat needs 
adjustment. See "Oven Temperature 
Offset" under "Customer Settings".

Oven light is not 
working 
properly.

Replace or reinsert the light bulb if 
loose or defective. Touching the bulb 
with fingers may cause the bulb to 
burn out.

Oven light does 
not turn off.

Check for obstruction in oven door. 
Check to see if hinge is bent. 

Cannot remove 
lens cover on 
light.

There may be soil build-up around 
the lens cover. Wipe lens cover area 
with a clean dry towel prior to 
attempting to remove the lens cover.

Oven is not self-
cleaning 
properly.

Allow the oven to cool before 
running self-clean. Always wipe out 
loose soils or heavy spillovers before 
running self-clean. If oven is badly 
soiled, set oven for the maximum 
self-clean time.

Clock and timer 
are not working 
properly.

Make sure there is electrical power 
to oven.

"E" and a 
number appears 
in display and 
control beeps.

This is a fault code. Press any key or 
turn knob to stop beeping. Reset 
oven if necessary. If fault code 
remains, record fault code, cancel 
oven and call authorized service 
technician.

With a new oven 
there is a strong 
odor when oven 
is turned on.

This is normal with a new oven and 
will disappear after a few uses. 
Operating the self-clean cycle also 
"burns-off" the smell more quickly.

Control does not 
react when a key 
is touched.

Be sure that surface is clean and 
dry. Touch the center of the touch 
key. Use the flat part of your finger.

Fan is running 
during modes 
that do not use 
convection

On some models, the convection fan 
runs while the oven is preheating. 
This is normal.

Warm air or 
steam escapes 
from oven vent.

It is normal to see or feel steam or 
warm air escaping from the oven 
vent. Do not block the vent.