Miele PFD 402 - Page 85

Problem solving guide
85
Problem Cause and remedy
Fault F 438 Heavy objects in front of the dishwasher machine can
impede the automatic opening of the door via the comfort
door lock.
 Do not place (heavy) objects in front of the door of the
dishwasher.
Fault F 446 The door lock is defective.
 Call the Miele Customer Service Department.
Fault F 492, 541 The programme has not started properly. There might be
water in the wash cabinet.
 Clean the filter combination (see “Cleaning and care”).
 Clean the non-return valve (see “Problem solving guide”).
Fault F 550 The waterproof system has reacted.
 Close the stopcock.
 Call the Miele Customer Service Department.
Fault F578 The peak-load negotiation has lasted longer than 2hours.
 Have your electrical system and your energy
management system tested by a specialist.