Miele PG 8591 - Dispensing and Drainage Faults; Fault Codes 518-521; Fault Code 542

Problem solving guide
124
Problem Possible cause and solution
Fault518–521
No flow was detected when dispensing from an external
container.
 Exercise caution when handling process chemicals.
For all process chemicals, the manufacturer’s safety
instructions as given on their safety data sheets must
be observed.
 Check the level in the containers and replace empty
ones with filled ones.
 Check the suction openings of the suction lances and
remove any deposits.
 Check the hose connections on the suction lances, the
machine, and any dispenser modules.
 Remove any kinks from the dispensing hoses and
check the hoses for leaks. Position the dispensing
hoses so that they cannot kink.
 Vent the dispensing systems.
If you identify any leaks in the dispensing hoses or
defects on the suction lances, contact Miele Service.
Fault542 A program was canceled because the water in the wash
chamber is only being pumped away slowly or not at all.
- The drain hose is blocked.
 Remove any kinks or large loops in the drain hose.
- The filters in the wash chamber are blocked.
 Danger of injury from glass shards, needles etc.
which are retained in the filters.
 Clean the filters in the wash chamber.
- The drain pump or non-return valve is blocked.
 Clean the supply line to the drain pump and the non-
return valve.
- The drainage system cannot accommodate the water
because it is blocked.
 Contact a qualified plumber.
Fault 550 The waterproof system has been activated. There might be
a leak in one of the water inlet hoses.
 Close the faucets.
 Contact Miele Service.