Miele 7644 C Manual

							Other problems
Problem Cause Solution
The drying
process goes on
too long or even
switches off.
Even after the lint
screen is
cleaned, the
Filter/Vent
indicator come
on.Please check all possible causes and switch the dryer
off and then on again.
Insufficient ventilation,
perhaps because the
installation space is too
small. As a result, room
temperature may rise.Open the door or window, to
prevent room temperature
from rising.
The ventilation inlets beneath
the door are closed.–Remove the blocking
objects.
Lint screens are plugged
with lint or have been put
back wet after cleaning.–Remove the lint.
– Lint screens must be dry.
Detergent residues, hair and
fine lint may block the
condenser.Inspect and clean the
condenser from time to time.
Laundry was insufficiently
spun.In future, spin textiles in the
washer at a higher rpm.
The dryer is overloaded. Verify the maximum load for
each drying program.
Metal components such as
zippers have prevented the
moisture level of the laundry
from being determined
accurately.–
In future, open the zippers.
If the problem recurs, in
future dry garments with long
zippers using the Warm air
program.
The laundry was
not satisfactorily
dried.The load consists of various
fabrics.–
Re-dry with warm air.
–
Next time, select a suitable
program.
Trouble shooting
31 
						

							Problem Cause Solution
Water runs from the
dryer after the
condenser has been
cleaned:–The condenser inner
cover and/or the
condenser have not
been properly inserted
and latched.
–Lint is sticking in the
condenser housing
recess.–Verify that the internal
cover and the
condenser are
correctly and solidly
seated.
–Check their rubber
seals as well.
–Using a cloth, remove
all visible lint from the
heat exchanger recess.
Synthetic laundry items
are statically charged
after drying.Synthetics have a
tendency to static
discharges.Using a fabric softener in
the last rinse cycle can
reduce static charge
when drying.
There has been a lint
buildup.Drying releases fabric lint
formed primarily from
rubbing during wear but
also, in part, from
washing. The stress on
fabrics in the dryer is
minimal in relation to their
strength.Lint released is captured
in the lint screen and can
be easily removed (see
"Care and Cleaning").
Trouble shooting
32 
						

							Problem Cause Solution
TheDress shirts,
Denim/Jeans, and Timed
coldprograms will not
start and the indicator
lights for these programs
do not come on.The cause is not imme
-
diately obvious.–Switch the dryer off and
then on again.
–Select one of the
programs.
–If the program will still
not start, there is a fault.
Contact Miele customer
service.
–Meanwhile, use another
program.
The dryer will not start
when switched on.The cause is not imme
-
diately obvious.–Is the dryer switched
on?
– Is it plugged in?
– Is the door closed?
– Check fuses or circuit
breakers.
Drum lighting does not
come on.The lighting switches off
automatically to save
energy.Switch the dryer off and on
again.
The bulb may need
changing.You can replace the bulb:
See the end of this section.
Trouble shooting
33 
						

							Replacing the light bulb
Disconnect the dryer from the
electrical supply.
Open the door.
The hinged cover for the lighting is over
the port-hole.
Gently insert an ordinary tool* under
the side of the cover.
* such as a wide slot-type screwdriver

Open the cover by pressing lightly
while rotating your wrist.
The cover opens downwards.
The heat-resistant bulb should be
obtained only from Miele customer ser-
vice.
The bulb should be of the same type
and maximum wattage indicated on
the data plate and the lighting cover.
Replace the bulb.
Fold the cover upwards and press it
on the right and left until you hear it
latch.
Ensure that the cover is properly
seated. If moisture gets inside it may
cause a short-circuit.
Trouble shooting
34 
						

							Repairs
For faults you cannot correct yourself,
please contact:
–the Miele Factory Repair Service.
The telephone number for the
Factory Repair Service is listed at
the back of these operating
instructions.
When contacting the Miele Service
Department, you will need to quote the
model and serial number of your
appliance.
These can be found on the data plate,
visible when the door is open.
Program updates
ThePCoptical interface is used by
Miele customer service to transfer
program updates (PC = Program
Correction) as well as for diagnose and
testing.
In this way, future developments in
fabrics and in the drying procedure can
be integrated into your appliance.
Miele will give timely notification of Pro-
gram updates.
Warranty conditions and
warranty period
Warranty information can be found in
your warranty booklet.
Optional accessories
Optional accessories for this dryer are
available from Miele customer service.
Customer service
35 
						

							Front view
Power cord
Control panel
Condensed water container
Door
Condenser service accessFour height-adjustable screw feet
Air inlet and outlet vents for cooling
condenser unit
	Condensed water drain hose
(see section "Draining condensed
water externally")
Installation and connection
36 
						

							Rear view
Handgrips under the cover overhang
for moving the appliance (arrows)
Air inlet vent for cooling condenser
unit
Power cord
Condensed water drainage hose
Accessories for connection to a sink
drain outlet
Installation site
This dryer can be accommodated
under a worktop if there is sufficient
height.
Do not install the dryer in a
location where its door could conflict
with room doors.
The appliance top is not
removable.
Carrying the dryer to the installation
site
The rear cover overhang provides
handgrips for transport. To carry the
dryer from the packing base to the
installation site, use the appliance front
feet and the rear cover overhang.
Washer-dryer stack
The dryer can be combined with a
Miele automatic washer in a
washer-dryer stack. For this, a "WTV
412" stacking unit* is required.
* Miele accessory available on order
Installation of the stacking unit
may be performed only by an
authorized Miele technician.
Installation and connection
37 
						

							Leveling the dryer
To ensure trouble-free operation, the
dryer must be level.

Compensate for floor irregularities by
turning the threaded feet in or out.
Do not block the gap between
the bottom of the tumble dryer and
the floor with plinth facings, deep
pile carpet etc. This would hinder a
sufficient flow of air to the dryer.
The air inlet/outlet vents on the
front and back must NEVER be
covered. Otherwise, sufficient
condenser cooling cannot be
ensured.
Installation and connection
38 
						

							Ventilating the installation area
Function of Miele condenser dryer:
The condenser dryer separates the
mixture of water and laundry (the
wet load) into water and dry laundry
itself.
The water is heated / evaporated,
then condensed and collected into
condensed water container.
The remaining dry laundry remains
in the drum.
Operation of Miele condenser dryer:
The dryer circulates some air
(trapped with wet laundry inside a
reversibly rotating drum) via lint
filters, heat exchanger and heaters,
in a closed loop.
The heat exchanger (condenser)
needs cooling, so the dryer
circulates also ambient air, through
separate channels across heat
exchanger, in an open loop. ( these
two loops do not mix).
Returning ambient air warms up the
room with dry heat.
Practically all energy, taken from the
electrical wall outlet, remains in the
room as dry heat.
You must therefore take measures,
especially in small rooms, to provide
sufficient ventilation, by opening
windows for instance. Otherwise,
longer running times may be
expected.Before transport at a later date
After every drying, a small quantity of
condensed water will collect in the
pump area. This condensed water can
leak out when the dryer is tipped. We
therefore recommend starting the
Timed cold program for about one
minute before transport
. Residual
condensed water will be drained into
the condensed water container or out
through the drain hose.
Installation and connection
39 
						

							Draining condensed water
externally
General
When drying is in progress, the
condensed water is pumped into the
condensed water container through the
drain hose at the back of the dryer.
You can also drain it off externally
through the drain hose - you will no
longer need to empty the condensed
water container.
Hose length................1.50 m
Max. delivery height..........1.50 m
Max. delivery length..........4.00 m
Under special kinds of
connection conditions, this dryer
must be fitted with a non-return
valve (see following pages).
The following optional accessories are
available:
– an extension hose.
–
a non-return valve kit for conversion
to an external water outlet
(includes an extension hose).
Max. delivery head with non-return
valve fitted: 1.00 m
Arranging the drain hose
Do not pull on the drain hose,
stretch it or kink it,
as it could get damaged!

There will be a small amount of
residual water in the drain hose.
Have a container ready to collect it.Pull the drain hose off its connection.
Allow any residual water to run into
the container.
Unwind the hose from its coil and pull
it carefully out of the holders.

Guide the hose to the right or left side
of the dryer, as necessary.
Leave the hose in the central holder to
prevent it from being inadvertently
kinked.
Installation and connection
40