How to connect up,
build-in, set up, use and
look after your
B1421 oven
Table of Contents
Important Information
❑ Notes on disposal
❑ Before connecting your
new appliance
❑ Appliance safety considerations
Introducing: Your New Oven
❑ Control panel overview
❑ Accessories
❑ Shelf positions
Before Using Your Appliance for the
First Time
❑ Setting the time of day
❑ Preliminary cleaning
❑ Initial burn-in
Electronic Timer
❑ Minute timer
❑ Automatic timer
❑ Information
Baking Roasting and Grilling
❑ Definition of Oven Features
❑ Switching the oven ON and OFF
❑ Baking
❑ Roasting
❑ Grilling
Cooking Tips and Helpful Hints
Defrosting and Cooking
Cleaning and Care
❑ Important cleaning basics
❑ Enamel and glass
❑ Stainless steel front
❑ Oven interior
❑ Removing/installing the oven door
❑ Oven light
❑ Removing shelf railings
Service and Repair Information
Trouble-shooting Guide
Assembly Instructions
❑ For the installer and kitchen expert
❑ Installation of the built-in oven
Important Information
Notes on disposal
❑ Old appliances still have some residual
value. An environment-friendly method
of disposal will ensure that valuable raw
materials can be recovered and used
Before you dispose of your old
appliance, make sure that it has been
rendered inoperable.
❑ Your new appliance was protected by
suitable packaging while it was on its
way to you. All materials used for this
purpose are environment-friendly and
suitable for recycling. Please make a
contribution to protecting the
environment by disposing of the
packaging appropriately.
Up-to-date information concerning
options for disposing of your old
appliance and the packaging from the
new one can be obtained from your
retailer or local government office.
Before connecting your new
❑ Before using your new appliance, please
read these Instructions for use carefully.
They contain important information
concerning your personal safety as well
as on use and care of the appliance.
❑ The Instructions for Use apply to several
versions of this appliance. Accordingly,
you may find descriptions of individual
features that do not apply to your
specific appliance.
❑ Please keep the operating and
installation instructions in a safe place;
this important documentation may also
be of use to a possible subsequent
❑ Do not use the appliance if it is
damaged in any way.
❑ Installation and connection of the
appliance should be performed
according to the instructions and
connection diagram provided, and
should be entrusted to a competent
electrician. In the event of a damage
that occurs as a result of improper
connection, the warranty will be void.
❑ Our appliances meet the applicable
safety regulations for electrical
appliances. Repairs must only be
performed by service engineers trained
by the manufacturer. Repairs carried out
by incompetent service agents can
make the appliance unsafe.
Important Information
Appliance safety considerations
❑ The appliance should only be used for
the preparation of food.
Open the oven door
Hot steam may escape.
❑ The surfaces of heating and cooking
appliances get hot during operation.
The interior oven walls and the heating
elements get extremely hot. Always
keep children away from the appliance.
❑ Never leave the appliance unattended
when cooking with fat or oil. They can
catch fire if overheated.
❑ Clean the oven regularly.
Fatty or oily remants could ignite when
the oven is switched on.
❑ Make sure that the power cord does not
get caught in the hot oven door. The
plastic insulation could melt.
❑ In the case of a defect, switch off (or
remove) the mains fuse in the building
electrical system.
❑ Do not store combustible items in the
oven. They could ignite if the oven is
switched on accidentally.
❑ If using hot air v, do not place
greaseproof paper loosely in the oven
(e.g. when heating the oven).
The hot-air fan could draw in the paper
which may damage the heater and fan.
❑ Do not clean the oven with steam or
high-pressure cleaners.
❑ Do not insert a baking sheet at the
bottom of the oven, or cover the base of
the oven with aluminium foil, as this
would result in heat build up. Roasting
and baking times would change, and
the enamel would be damaged.
❑ Never pour water directly into the hot
oven. Damage to the enamel could
❑ Dripping juices may leave spots on the
oven lining. Always place a baking tray
below to prevent this from happening.
❑ Never stand or sit on the open oven
❑ The oven door must close properly.
Keep the door seal surfaces clean.
Introducing: Your new Oven
Electronic timer controls
Function selector
Function selector
Temperature selector
with control lamp
Temperature selector
L100 50
M 15
k Defrosting position
v Circotherm
Z Radiant grill
I Circo-roasting
L, M, H
Temperature in ° C
Temperature for radiant grill
Introducing: Your new Cooker
❑ Your appliance is supplied with:
2 Wire shelves
1 Roasting/grill pan with grid
❑ The following accessories can be obtained from the supplier of your
Deep roasting pan
Z 1270 X2
Baking tray, aluminium
Z 1330 X0
Baking tray, enamelled
Z 1340 X2
Small grill-set
Z 1240 X2
Supplementary equipement set – Telescopic
Z 1750 X0
❑ The baking tray or roasting pan may
distort while the oven is operating. This
is caused by major temperature
differences on the utensil. These
differences may occur if only one part of
the utensil was covered or if deep-frozen
food, e. g. pizza, was placed on the
Shelf positions
❑ Your oven features 4 shelf positions.
The shelf positions are counted from
bottom to top. The numbers are marked
in the oven.
When using circotherm, do not
use shelf position »2«, in order not to
block air circulation.
Order no.
The distortion will already subside again
during baking, roasting or grilling.
Before Using Your Appliance for the First Time
Time of day
❑ Before you use your appliance for the
first time, it is necessary to set the
current time on the electronic timer.
❑ After connecting to the mains, or after a
power failure, the display {:{{ will blink.
Setting the time:
Press the + button and set the current
time with the rotary knob (e.g. | Å:{{).
Note: The time cannot be set if an
automatic function is active (see Electronic
clock for cancelling automatic function).
Preliminary cleaning:
1. Clean the appliance exterior with a soft
moistened cloth.
2. Clean the oven and the accessories with
a hot detergent solution.
Initial burn-in
1. Preheat the empty oven for about
30 minutes.
Select v heat at a setting of 190° C.
During the initial burn-in phase, please
open the kitchen windows to dissipate
unpleasant odours.
Electronic timer
Function indicator
Minute timer
Rotary knob
To engage and
disengage, depress
Cooking time
Off time
❑ The electronic timer can be operated
with one hand; after pressing the button,
set the time with the rotary knob.
Adjustments can be made for as long as
the display flashes (4 seconds).
❑ Setting the time:
See section ”Before using your
appliance for the first time”.
Minute timer:
1. Press the t button and set the cooking
time (e.g. Å minutes).
When the timer switches on, the
remaining time is displayed.
2. If you want to display the current time,
press the + button.
3. When the time has elapsed, a signal is
emitted and the arrow display flashes.
To stop the signal, press the t button.
Setting the timer:
Electronic timer
Automatic timer
❑ You can switch the oven on and off via
the electronic clock.
Automatic switch off:
❑ If you wish to bake or roast food
immediately, it is only necessary to set
the cooking time.
1. Select the heating system and the oven
2. Press the g button and set the cooking
time with the rotary knob (e.g. | hour
and ~{ minutes).
When the cooking time has been set,
the time of day is displayed.
The , displayed above the g button
indicates automatic mode.
3. When the time has elapsed (e.g. | hour
and ~{ minutes), a signal is emitted and
the , flashes. The oven is automatically
switched off. To stop the signal, press
the g button.
4. Switch the oven off.
5. To end automatic mode, press the g
button again.
Setting the length of cooking time:
Electronic timer
Automatic switch on and switch off:
❑ If the food is to be cooked later on, both
the cooking time and Off time must be
1. Select the heating system and the oven
When the settings have been made, the
time of day is displayed.
2. Press the g button and set the cooking
time with the rotary knob (e.g. | hour
and ~{ minutes).
3. Press the h button and set the Off time
with the rotary knob. The , displayed
above the h button indicates automatic
mode (e.g. |}:~{).
4. The oven is automatically switched on
and off at the preset times (e.g. | |:{{
and |}:~{).
5. When the time has expired, a signal is
emitted and the , flashes. To stop the
signal, press the h button.
6. Switch the oven off.
7. To end automatic mode, press the h
Setting the length of cooking time:
Setting the end of cooking time:
Checking, correcting and cancelling
1. To check your settings, press the g or
h button.
2. If required, correct the settings with the
rotary knob.
3. If you want to cancel your settings, turn
the set time back to {:{{ and switch
the oven off.
Special functions
Masking out the display:
1. Press the + button for 4 seconds.
The display then goes blank and the
time continues running in the
2. To switch on the display, briefly press
the + button.
Dimming the display:
❑ Between 22.00 and 6.00 the display is
automatically dimmed.
❑ The automatic timer is best used with
dishes which require little attention.
❑ The minute timer and OFF time can be
pre-programmed up to a max. 24 hours.
❑ The settings can be displayed at any
time by pressing the relevant button.
❑ To cancel the preset time:
Press the g button and reset the time
to {:{{.
Definition of Oven Features
Gentle defrosting—————————
Recommended for delicate pastries only
(i.e., whipped-cream gateaus).
Circotherm ———————————
– low soiling of oven interior
– cooking on up to 3 shelf levels at once
is possible
– shorter preheating times
– low oven temperatures
– bread baking
Circotherm grilling ———————— v
A system by which foods, that would
normally be grilled by direct heat from an
element, are cooked using Cirotherm.
Temperatures between 180 to 190 °C are
selected and the food is placed on the wire
shelf, roasting on the roasting/grill pan.
Radiant grill ———————————
The food being cooked is exposed to heat
from the grill element at the top of the oven
Circo-roasting ——————————
With Circo-roasting the fan and grill
elements are activated alternately.
The heat generated by the grill element is
evenly distributed in the oven cavity by the
fan. This method of cooking gives an effect
similar to spit roasting (rotisserie).
– ideal for steaks, sausages, chicken
joints, fish, kebabs and chops
– no turning of food is required
– three shelves of ‘grilled’ food can be
prepared at one time
– very convenient
– particularly suitable for flat, small cuts of
meat, i.e., steaks and sausages, fish,
vegetables and toast.
– Particularly suitable for pork and poultry
when a crisp skin is desired.
Switching the Oven ON and OFF
L100 50
M 15
Function selector
Switching the oven OFF:
To switch the oven OFF, turn both the
temperature selector and function selector
to the »0« position.
Note: After switching OFF the oven, the fan
may continue to run for a short time in
order to prevent heat build-up.
Switching the oven ON:
1. Use the function selector to determine
the desired system.
2. Set the temperature control knob to the
desired temperature.
❑ The selected temperature will be
controlled automatically.
❑ The red oven temperature control lamp
illuminates when the oven is first
switched on, and extinguishes when the
required temperature has been reached.
Before switching on your oven, you should
decide which heating system you wish to
Using baking tins v
❑ Always place baking tins in the centre
of the wire shelf.
❑ The wire shelf may be turned upside
down to accommodate different size
❑ If the cake base gets too dark:
Check the shelf level. Reduce the
baking time, and possibly use a lower
baking temperature.
❑ If the cake base stays too light:
Check the shelf level. Increase the
baking time, select a lower temperature,
or use a dark metal baking tin.
❑ You can use baking tins of any material
and of any colour, as long as they are
❑ Do not place baking tins or high cakes
too close to the rear oven wall.
❑ You can influence the degree of
browning by changing the temperature
❑ If a cake collapses after removing it from
the oven, use less liquid on your next
attempt, consider using a longer baking
time, or use a slightly lower temperature
Roasting with Circotherm v
❑ Meat roasted using the Circotherm
system will brown on all sides and stay
moist without additional fat.
❑ Choose cuts of meat that weigh
150 grams (5oz) or more.
❑ Place the shelf on top of the roasting
❑ Place the meat on the shelf, season if
❑ Slide the pan and shelf into the oven on
the same shelf position.
❑ No pre-heating is required. Save energy
by putting the roast into the cold oven.
❑ Use a Circotherm temperature of 160 °C.
Circotherm grilling v
Use this method for small cuts of meat –
steaks, chops, sausages, bacon, chicken
joints and fish.
❑ Use the shelf and roasting pan together.
❑ Season meat as required.
❑ Place on shelf.
❑ Do not turn food over – the hot air will
circulate around the food cooking all
❑ Use a temperature of 180–190 °C.
Casseroling or pot-roasting in a covered
❑ Some meats should be prepared in
liquid in a covered casserole. This type
of cooking is suitable for less tender
cuts of meat.
❑ Place the casserole on the wire shelf on
a suitable shelf position.
Cooking tips:
❑ Only use ovenproof cookware.
❑ Extra large turkeys and joints can be
placed directly in the roasting pan and
not on the wire shelf.
❑ Cover large turkeys with foil during
cooking. Remove foil during the last hour.
Radiant grilling Z
Used for small cuts of meat or poultry.
Exercise CAUTION when grilling.
Always keep children away from
the oven when it is in use.
Notes on grilling:
❑ Always close the oven door when
❑ The grilling temperatures are variable.
❑ Always use the grill and roasting pan
❑ Turn the food after approx. two-thirds of
the grilling time has elapsed.
❑ Lightly brush the wire shelf with oil and
baste the food if desired.
❑ Always place the food to be grilled in the
centre of the wire shelf.
❑ If the heating element switches off
automatically, the overheating protection
was activated. The element will be
reactivated after a short period of time.
Circo-roasting I
Use this method for particularly crispy
poultry or pork with crackling.
❑ Use the shelf and roasting pan together.
Turn large roasts after about half of the
total cooking time has elapsed. Use
shelf 1 or 2 for circo-roasting.
❑ Some types of food (e.g. fatty meats)
will spit during Circo-roasting.
Therefore, to prevent burning-on of the
stains, thorough cleaning of the oven is
recommended after use.
❑ Whole poultry should be turned after
approx. two-thirds of the cooking time
has elapsed. With duck and goose,
pierce the skin under the wings to allow
excess fat to drain off.
❑ After the end of the selected roasting
time and with the oven switched OFF,
leave the roast in the closed oven for
approx. 10 minutes.
Cooking Tips and Helpful Hints
When cooking with Circotherm:
❑ Cakes baked in a tin get too dark at the
Avoid blocking the air vents at the rear wall
of the oven with the cake tins.
❑ Cakes remain doughy and collapse
when removed from the oven.
Reduce the temperature for deep cakes.
Bake for a longer period of time. Test with
a skewer before removing.
❑ Uneven browning of small cakes or
Avoid placing trays too close to the back
wall. Space food on the tray.
❑ With very moist foods steam develops
and condenses on the oven door and
drips onto the floor.
Several brief periods of opening the oven
door during baking (1 or 2 times, more
frequently with longer roasting times) will
aid in venting the steam in the oven and
reduce condensation.
To save energy:
❑ Preheat only if recommended by the
❑ Dark baking tins have a higher degree of
heat absorption.
❑ Residual heat: In the case of longer
baking times, you can switch off the
oven 5–10 minutes before the full baking
time has elapsed.
Defrosting and Cooking
Defrosting and cooking using the Circotherm v
Important heating system information:
❑ For defrosting and cooking of frozen
foods, use circotherm.
❑ With all frozen foods, follow the food
manufacturers instructions on the
❑ As a rule, defrosted frozen foods
(especially meats) require less cooking
time than fresh products, since freezing
has a pre-cooking effect.
❑ If frozen meat is placed in the oven, the
defrosting time must be added to the
required cooking time.
❑ Always defrost frozen poultry before
cooking because the giblets must be
❑ For cooking frozen fish, use the same
temperatures as for fresh fish.
❑ Frozen ready-to-eat meals in
aluminium dishes may be placed into
the oven several at a time.
❑ Frozen vegetables (i.e., when cooking
complete meals) should be cooked in a
covered pot together with the roast. Use
only approximately half of the liquid
specified in the recipe. Use fat only for
adding flavour.
Gentle defrosting: k
Recommended for delicate pastries only
(i.e., whipped-cream gateaus).
❑ Turn the function selector switch to the
k position. Dependent on size and type
of the baked goods, defrost 25 – 45
minutes, take out of the oven and allow
to stand 30 – 45 minutes.
❑ With smaller amounts (pastries), the
defrosting time is reduced to 15 – 20
minutes and the subsequent standing
time to 10 – 15 minutes.
Standard defrosting of various foods:
Shelf-in levels:
With 1 baking sheet: Slide-in level 3
With 2 baking sheets: Slide-in levels 1 and 3
❑ All stated times are approximate
guidelines that vary with the shape and
volume of frozen products.
❑ Raw frozen products or foods from a
freezer always defrost at 50° C.
Higher defrosting temperatures may
cause the food to dry out.
❑ Defrost frozen meals packed in
aluminium foil or closed aluminium
containers at a setting of 130 – 140° C.
❑ Place frozen meals packed in plastic
bags or plastic containers in a pot
filled with water. Cover the pot and
defrost of 130 – 140° C.
Attention: Pot handles must be ovenproof.
❑ Defrost and warm up frozen baked
goods at 100 – 140° C. Brush bread,
rolls or yeast pastry lightly with egg to
make the crust more appealing.
❑ Defrost dry frozen yeast cakes at
160 – 170° C for 20 – 30 minutes.
❑ Defrost moist frozen yeast cakes (with
fruit topping) at 160 – 170° C for
30 – 50 minutes after wrapping in
aluminium foil to prevent cake from
drying out.
❑ Defrost and toast frozen toast (with
topping) at 160 – 170° C for about
20 minutes.
❑ Defrost and bake frozen pizzas at 180 –
190 °C for 15 – 25 minutes.
Place on wire grill covered with
greaseproof paper.
Please ensure that the greaseproof
paper is suitable for use at these
Cleaning and Care
Important cleaning basics:
❑ For cleaning, do not use abrasives, corrosive cleaners, aerosol cleaners or sharp objects.
❑ Do not scratch off burnt-on food residues, but soak off them with a damp cloth and
washing up liquid.
❑ Oven cleaners must not be used on aluminium or plastic parts.
Stainless steel front:
❑ When using commercially available
Stainless Steel cleaning agents, avoid
cleaning any lettering, as this can
become damaged!
❑ Do not use any scouring pads or
abrasive cleaners.
❑ Use commercially available detergents
applied with a soft, moistened cloth or a
Oven interior:
❑ Clean the oven after each use,
especially after roasting or grilling.
Food remnants burn in when the oven is
The baked in remnants are very difficult
to remove once burnt in.
❑ You can reduce the degree of soiling by
greater use of the circotherm.
Do not clean the warm oven with any
of the cleaning products specifically
designed for this purpose.
Enamel and glass:
❑ Use hot detergent suds for cleaning.
❑ Remove the oven door before cleaning
the enamel surface.
❑ When baking very moist cake (e.g. rich
fruit cake) that could drip over the top of
the tin, place on the roasting pan or
your own baking sheet.
❑ When roasting, ensure that the meat
juices do not splash on to the base of
the oven.
❑ Clean the oven before soiling becomes
too heavy. Wash out the oven cavity
with hot detergent suds. Leave the door
open until the interior has dried.
Cleaning and Care
Manual cleaning steps:
Note: To make cleaning more convenient,
the oven offers you the following options:
Removing the oven door:
1. Fully open the oven door.
2. Move the catch levers on the right and
left-hand sides to the fully open position.
3. Placing the door at an upward angle
toward you, grasp the door with both
hands and lift it out of the hinges toward
Replacing the oven door:
1. Set both hinges into their respective
receptacles on the left and right, and
swing the oven door downward.
2. Close the catch levers on the left and
3. Close the oven door.
Switch on the oven light:
❑ Set the function selector to a random
Removing the shelf railings:
1. On both left and right sides, remove the
one milled screws.
2. Carefully remove the suspended grids.
Service and Repair Information
In the event of problems or repairs that you
cannot solve yourself, our customer service
will be happy to help. Check the customer
service directory for an office facility in your
Caution: Calling customer service because
of an operator error can be very costly! In
the event of a service request, please have
the following information handy:
You can find this information on the
appliance‘s nameplate. The nameplate is
located on the appliance, behind the oven
door, on the left bottom edge of the oven.
Replacing the oven light:
Caution: Disconnect the appliance or
remove the fuse!
1. To prevent damage, place a tea cloth
into the cold oven.
2. Unscrew the lamp cover by turning it
3. Replace the lamp.
– Type: Incandescent bulb E 14, 220 –
240 V, 40 W, heat-resistant to 300 °C.
– You may obtain this bulb from our
spares department.
Replacing the oven door seal:
1. Remove the defective oven door seal by
simply unhooking it.
You may obtain the new oven door seal
from our spares department.
Trouble-shooting Guide
Calling the customer service is not always really necessary. In some cases, you can remedy the situation yourself. The following table may contain some helpful tips.
Important general safety guidelines:
Service or repair work on the electronic components may only be performed by a qualified expert. Without exception, prior
to starting such repairs, the appliance must be disconnected from the mains. This may be accomplished by tripping the
automatic fuse or by removing the fuse from the fuse box that controls your flat or apartment.
Possible cause
There is a general failure of all electrical functions, i.e., the control lamps
have suddenly ceased to function.
Defective fuse.
Check the fuse in the fuse box, and
replace if required.
Liquids or thin cake mixes are distributed at a visibly uneven thickness.
The appliance has not been placed
or installed plumb-and-level.
Level the appliance using the levelling feet, or check the installation.
The electronic timer display suddenly shows a blinking 0.00.
The power supply was briefly interrupted.
Reset the time of day.
The oven suddenly stop functioning.
The electronic timer is set to an automatic timing cycle.
Set electronic timer to operation
without automatic timer:
1. Reset ON time g to {:{{.
2. Press the g button.
The oven door window pane fogs
This is a normal condition. It is caused by the occurrence of temperature differences.
Heat the oven at 100 °C for about 5
A considerable amount of water
condensation occurs in the oven.
This condition is normal with moist
cakes or with very large roasts.
During baking or roasting, open the
oven briefly several times; wipe up
condensation after use.
After prolonged use, the oven
window panes are soiled from the
This kind of soiling is normal.
Remove the oven door, and put
aside with the handle facing upward.
For cleaning, remove the two screws
at the door handle moulding with a
Caution: During reassembly, install
both the door handle and the door
seal in their original positions.
Assembly Instructions
For the installer and kitchen
Important installation notes:
❑ Properly dispose of packaging
❑ Do not use oven door handle for transporting or handling the unit during
❑ WARNING: Connection and first start of
the appliance may only be performed by
an authorised specialist.
❑ Connection must be made using an
H 0 5 V V- F mains connection cable.
❑ Nominal connected loading, nominal
voltage and model number of the
see the rating plate, located behind the
oven door, fixed to the lower left facing
edge of the oven.
❑ The unit's nameplate is located at on
the right sidewall of the unit.
❑ Electrical safety of the appliance can
be ensured only if the equipment earth
in the building installation has been
installed according to regulations.
❑ On the installation side a isolating device
shall be provided.
Any switch with a contact gap exceeding 3 mm may be considered
a separating device.
Other examples are LS switches, fuses
and contactors.
❑ In the case of repairs interrupt all
power connections to the unit.
❑ Connection diagram
220-240V ~
Kitchen furniture
Oven housing units from virtually all lines of
kitchen furniture are suitable for installing
the built-in oven. However, the veneers or
plastic laminates on the housing unit must
be applied with heat-resistant glue (90 °C).
If plastic laminate or glue are not sufficiently
heat-resistant, warping, bubbling or
detachment of the finish may result.
Assembly Instructions
Installation of the built-in oven
❑ To burn-in the insulation, heat up the
oven prior to installing the unit.
❑ Push the built-in oven into the housing
unit and align the unit until it is in a level
❑ Open the oven door and, using one
screw on each side, fasten the built-in
oven to the side strips of the housing
unit (see illustration).
The two screws (supplied with the builtin oven) must be started slightly
❑ Verify that the built-in oven is positioned
securely and in a level position, and
that the required installation dimensions
have been maintained.
❑ The properly installed appliance must be
covered on all sides in such a fashion
that not even components with rough
insulation are exposed to the touch. The
cover must be removable with tools
NEFF (UK) Ltd.
Grand Union House,
Old Wolverton Road,
Old Wolverton
Milton Keynes, MK12 5PT
Tel: 01908 328300
Fax: 01908 328399
5750 201 817
Printed in Germany
1103 Es.
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