Miele Dishwasher Repair - and Service for Miele Laundry and Kitchen Appliances

Water left in the tub, "Drain" on the display or F11

The program ends or stops with dirty water standing in the wash cabinet, and the display shows Drain (current models) or Fault F11 (older G 4281/4286).

Miele’s manuals point to the same drain path on both generations: a clogged filter combination, a drain pump blocked by foreign objects, the non-return valve, or a kink or high loop in the drain hose. Miele specifically warns that glass splinters in the drain pump are hard to see. Its installation limits also matter after a remodel – a drain run no longer than 13 ft (4 m) and a delivery head no higher than 3 ft (1 m).

Clear and inspect the filter combination and microfilter, open the drain pump and check the impeller by hand with care, then check the non-return valve and the hose routing under the sink. A clean pump that still does not move water is tested electrically before it is replaced.

"Intake" message, F12/F13, or the dishwasher will not fill

The program will not start its wash, the machine hums without taking water, or it reports Intake or Fault F12/F13.

Miele’s first instruction is to open the water supply all the way. After that it points to the filter built into the inlet hose’s screw thread, which protects the water inlet valve and restricts flow when it clogs. Low supply pressure is the third cause – Miele gives 7.25 psi as the minimum for current models and 4.35 psi for the older G 4281/4286.

Confirm the shutoff is fully open, pull and clean the inlet filter, and measure what the valve actually receives. If pressure and filter are fine, the inlet valve and its control are tested next.

"Waterproof" message or F70 – the leak protection has reacted

The dishwasher stops, shows Waterproof (or F70 on older US models) and will not run again.

Miele describes this as the Waterproof system reacting, and its instruction is to turn the dishwasher off, turn off the water supply and get service. Miele also states that the system protects against water damage only when installation was done correctly and the machine has been maintained, with damaged parts replaced.

Keep the water supply off until the source is found. We check the base, hoses, door seal area and internal connections for where the water came from, repair that, and only then return the machine to normal use. Clearing the message without finding the leak just sets up the next one.

Fault F78, F33 or F18 on a current Miele dishwasher

A numbered fault appears on a newer AutoDos-generation model.

Miele’s current manual lists F78 as a circulation pump fault, F33 as the door not opening automatically, and F18 as a technical fault. For each one, Miele sends the owner to service rather than a self-fix.

These faults need a technician’s diagnosis – we test the circulation pump, the automatic door-opening mechanism or the component behind the code, and tell you what failed before any part is ordered.

Miele heat-pump dryer taking longer and longer to dry

Cycles stretch out, the plinth filter light comes on, or clothes come out damp.

Miele’s heat-pump dryers have two lint filters in the door opening, which Miele says to clean after every program to prevent longer run times, and a plinth filter to clean whenever its light comes on or programs run longer than usual. On TwinDos washers, Miele’s drain and intake messages point to a blocked filter or pump, a drain hose fixed too high (39 3/8 in. maximum), or a kinked or clogged intake.

Clean both lint filters and the plinth filter, then check airflow and the heat-pump circuit. For a washer that will not drain or fill, the filter, pump and hoses are checked before any control or pump replacement.