Problem solving guide
127
Problem
Possible cause and solution
Fault 438
The door seal sticks.
Clean the door seal.
Heavy objects in front of the machine can impede the
automatic opening of the door by the Comfort lock.
Do not place (heavy) objects in front of the door of the
machine.
The Comfort door lock is blocked.
Try to open the door carefully (without using force) by
pulling on the door handle.
If the door is still blocked:
Open the door using the emergency release.
Close the door and try to open it again using the
button.
If it is still blocked:
Contact Miele Service.
Fault 440
The float switch in the base of the machine has not been
activated. The switch might be blocked.
Remove the filter combination.
Check the float switch to make sure it moves freely. The
float switch is located in the base of the machine behind
the spray arm.
Fault 460-462
A program was interrupted due to the spray arm speed
dropping below the set value because:
- items are obstructing the machine or basket spray arms.
Arrange the load so that the spray arms can turn easily
and start the program again.
- wash pressure is too low due to a heavy build-up of
foam.
Follow the instructions regarding foam build-up in
“Chemical processes and technology”.
Fault 492, 504
A programme has been cancelled because there is not
enough water pressure. The filters in the wash chamber
may be blocked.
Danger of injury from glass shards, needles etc.
which are retained in the filters.
Check and clean the filters in the wash chamber (see
“Maintenance/Cleaning the filters in the wash chamber”).
