Bosch HQA 74B 3 Series User Manual And Installation Instructions page 25

Fault
The appliance door
cannot be opened;
⁠ lights up in the dis-
play.
lights up on the
display and no set-
tings can be made
on the appliance.
flashes in the dis-
play and the appli-
ance will not start.
appears in the
display.
A message with ap-
pears in the display,
e.g. - .
19.2 Replacing the oven light bulb
If the light in the cooking compartment fails, change
the oven light bulb.
Note: Heat-resistant, 40 - 43-watt, 230 V halogen bulbs
are available from the after-sales service or specialist
retailers. Only use these bulbs. Hold the new halogen
bulbs only with a clean, dry towel. This increases the
service life of the bulb.
WARNING ‒ Risk of burns!
The appliance and its parts that can be touched be-
come hot during use.
Caution should be exercised here in order to avoid
▶
touching heating elements.
Young children under 8 years of age must be kept
▶
away from the appliance.
WARNING ‒ Risk of electric shock!
When changing the bulb, the bulb socket contacts are
live.
Before replacing the bulb, ensure that the appliance
▶
is switched off in order to prevent a potential electric
shock.
Also unplug the appliance from the mains or switch
▶
off the fuse in the fuse box.
WARNING ‒ Risk of injury!
The glass cover may already have broken due to ex-
ternal influences or it may break due to excessive pres-
sure when being installed or removed.
Exercise caution when installing or removing the
▶
glass cover.
Use gloves or a tea towel.
▶
Cause and troubleshooting
The cleaning function locks the appliance door.
Allow the appliance to cool down until
▶
Childproof lock is activated.
Use the ⁠ button to deactivate the childproof lock.
▶
→ "Childproof lock", Page 16
The cooking compartment is too hot for the selected operation.
Switch off the appliance and allow it to cool down.
1.
Restart the operation.
2.
The maximum cooking time has been reached. To prevent an unwanted permanent opera-
tion, the appliance automatically stops heating after several hours if the settings are un-
changed.
Switch off the appliance.
▶
You can configure new settings if required.
Tip: To prevent the appliance from switching off when you do not want it to, e.g. for an
extremely long preparation time, set a cooking time.
→ "Time-setting options", Page 12
Electronics fault
Press the ⁠ button.
1.
If required, reset the time.
‒
a If the fault was a one-off, the error message disappears.
If the error message appears again, call the after-sales service. Quote the exact error
2.
message and the E no. of your appliance.
→ "Customer Service", Page 26
goes out in the display.
Requirements
¡ The appliance is disconnected from the power sup-
ply.
¡ The cooking compartment has cooled down.
¡ You must have a new halogen lamp to replace the
old one.
Place a tea towel in the cooking compartment to
1.
prevent damage.
Turn the glass cover anti-clockwise to remove it ⁠ .
2.
Pull out the halogen bulb without turning it ⁠ .
3.
Insert the new halogen bulb and press it firmly into
4.
the socket.
Make sure that the pins are positioned correctly.
5. Depending on the appliance model, the glass cover
may have a sealing ring. Attach the sealing ring.
Screw in the glass cover.
6.
7. Remove the tea towel from the cooking compart-
ment.
Connect the appliance to the power supply.
8.
Troubleshooting en
25