Replacing the Active AirClean filter. Miele KWT 6321 UG

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Replacing the Active AirClean filter. Miele KWT 6321 UG | Manualzz

Active AirClean filters

Fresh air from the room enters the wine conditioning unit through the Active

AirClean filter. Filtering the incoming air through the Active AirClean filter ensures that all the air entering the appliance is fresh and free from dust and odours.

Replacing the Active AirClean filter

 Detach the back part of the filter from the cover.

 Push the filter in and then release it.

 Push the new filter onto the cover.

 Pull the filter out.

 Insert the new filter.

 Push the filter in and then release it.

The filter will lock into place automatically with an audible click.

Active AirClean filters can be obtained from your Miele dealer, Miele or from the Miele website.


Problem solving guide

Some minor problems can be corrected without contacting Miele.

If, having followed the suggestions below, you still cannot resolve the problem, please contact Miele.

To prevent unnecessary loss of temperature it is advisable not to open the door while waiting for the wine conditioning unit to be serviced.

 Unauthorised installation, maintenance and repairs can cause considerable danger for the user.

Installation, maintenance and repairs must only be carried out by a Miele authorised technician.


The wine unit is not getting cold, the interior lighting does not come on when the door is opened, and the temperature display is not lit up.

The wine unit is not getting cold. However, the appliance and the interior lighting are working fine.

Cause and remedy

The wine unit is not switched on.

 Switch the wine unit on. The temperature displays must be lit up.

The plug is not inserted in the socket correctly.

 Insert the plug into the socket.

The mains fuse has tripped. There could be a fault with the wine unit, the household electrical wiring or another electrical appliance.

 Contact a qualified electrician or Miele.

Demo mode has been activated. Demo mode allows the Wine unit to be presented in the showroom without the cooling system being switched on. Do not activate this setting for domestic use.

 Contact the Miele Service Department for information on deactivating Demo mode.


Problem solving guide


The compressor is switching on more frequently and for longer periods of time, the temperature in the wine conditioning unit is falling.

The compressor comes on less and less often and for shorter periods of time. The temperature in the wine conditioning unit rises.

Cause and remedy

The temperature in the wine conditioning unit is set too low.

 Adjust the temperature.

The appliance door is not properly closed.

 Check that the appliance door closes properly.

The appliance door has been opened too frequently.

 Only open the door when necessary and for as short a time as possible.

The ventilation gaps have been covered over or become dusty.

 Do not cover the ventilation gaps and dust them regularly.

The air filter is dusty.

 Clean the air filter (see “Cleaning and care”).

The ambient room temperature is too warm.

 Decrease the ambient room temperature.

Not a fault. The temperature is too high.

 Correct the temperature setting.

 Check the temperature again after 24 hours.

The air filter in the appliance plinth is dirty.

 Clean the air filter (see “Cleaning and care”).


Problem solving guide

Display warnings


A dash is lit up up/flashing in the display.

F0 or F1 appears in the temperature display.

The alarm is sounding and the temperature display is flashing.

Cause and remedy

Only temperatures within the range the wine conditioning unit can display will be shown.

There is a fault.

 Call Service.

The temperature in the zone concerned has risen higher or fallen lower than the temperature set.

This could be due to, for example:

– the appliance door being opened too often, or being left open,

– blocked ventilation gaps,

– a lengthy interruption to the power supply.

 Rectify the cause of the alarm. The temperature display will stop flashing and the alarm will stop.


Problem solving guide

The interior lighting is not working.


The LED interior lighting is not working.

Cause and remedy

The wine conditioning unit is not switched on.

 Switch the wine conditioning unit on.

To avoid overheating, the LED lighting switches itself off automatically after approx. 15 minutes if the door is left open.

If this is not the cause, then there is a fault.

 Danger of electric shock.

There are live electrical components under the lighting cover.

The LED lighting may only be repaired or replaced by the Customer Service Department.

 Risk of injury from LED lighting.

This lighting corresponds to risk group RG 2. If the cover is defective, there is a danger of eye injury.

If the lighting cover is defective, do not look from a close range directly into the lighting with optical instruments (e.g. magnifying glass or similar).

The LED interior lighting is on even when the door is closed.

 Call the Customer Service Department.

The feature lighting is switched on.

 Switch the feature lighting off (see “Feature lighting”).


Problem solving guide

General problems with the wine conditioning unit


An alarm sounds.

The wine conditioning unit cannot be switched off.

The slats on the wooden shelves are warping.

Mildew has begun to form on the wine bottle labels.

A white deposit has formed on the wine bottle corks.

Cause and remedy

The appliance door has been open for longer than approx.60 seconds.

 Close the appliance door.

The safety lock has been activated.

 Completely deactivate the safety lock (see “Selecting further settings – Activating and deactivating the safety lock   ”).

Volume change due to moisture absorption or drying out is a typical characteristic of wood. An increase in humidity will cause wooden components to warp, which can lead to cracking. Knots and grain patina are part of the natural character of wood.

Mildew can begin to form on the labels, depending on the type of label adhesive used.

 Clean the wine bottles and remove any adhesive residue.

The corks have oxidised due to contact with the air.

 Use a dry cloth to wipe off the deposit. The deposit will not affect the quality of the wine.



Normal noises What causes them

Brrrrr ...

A humming noise is made by the motor (compressor). This noise can get louder for brief periods when the motor switches on.

Blubb, blubb ...

A gurgling noise can be heard when coolant is circulating through the pipes.

Click ...

Sssrrrrr ...

Clicking sounds are made when the thermostat switches the motor on and off.

On multi-zone wine conditioning units you can sometimes just hear the sound of the fan inside the appliance.

Crack ...

A cracking sound can be heard when material inside the wine conditioning unit expands.

Remember that the noise of the compressor and the coolant circulating in the system is unavoidable.

Noises that you can easily rectify

Rattling, vibrating

Possible cause

The wine conditioning unit is uneven.

Shelves are unstable or sticking.

Bottles or containers are touching each other.

The transport cable clips are hanging loose at the back of the appliance.


Realign the wine conditioning unit using a spirit level, by raising or lowering the screw feet underneath the appliance.

Check all removable items and refit them correctly.

Separate them.

Remove the cable clips.



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Key Features

  • Built-in 34 bottle(s) Grey
  • Number of shelves: 4 Number of doors: 1
  • 38 dB
  • 142 kWh
  • Built-in display Interior light

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