Miele dryer error code F55

What Miele publishes for it

On a Miele dryer, the manufacturer publishes this for the drum is too full. That sentence is Miele's own, read off its published support page for this condition rather than worked out from the outside. Everything below it — what the condition covers and what is worth doing first — is ours, written from what this equipment does in Miami kitchens.

What this block of conditions is about

Every dryer Miele sells in the United States now is a heat-pump machine, which means the condition on the display is usually about a circuit that has no equivalent in a vented dryer: a compressor, an evaporator and a condensate pump rather than an exhaust duct.

What it covers

What a published cause names is a circuit rather than a component, which is the single most useful thing to know before anybody orders a part. This one covers:

• The drum is too full.
• Do not exceed the maximum load size for the drying program selected. Information on the load size can be found in the operating instructions.
• The laundry is too damp.
• Spin using a higher spin speed in the washing machine.
• The lint filters are soiled.
• Environmental impact due to lint which has been disposed of incorrectly.
• To prevent microplastics from spreading into the waste water system, lint must not be drained away with the water.
• Dispose of the lint collected by the lint filters with your household waste.
• You can also use a vacuum cleaner so that you can remove the lint without touching it.
• Hold the knob and pull the lint filter forward to remove it.
• Shake the lint filters thoroughly and then dry them carefully.
• Wet lint filters could cause operational conditions while drying.
• The laundry has not been spun sufficiently and is still too damp.
• Spin the laundry in the washing machine at the highest possible speed.

Worth trying yourself, in this order

1. Clean the lint filters as follows:
2. Open the door.
3. Pull the upper lint filter forward to remove it.
4. Remove the lint (see arrows).
5. Remove the lint (see arrows) from the surface of all the lint filters and the perforated laundry deflector.
6. Turn the yellow knob on the lower lint filter in the direction of the arrow (until you hear it click).
7. Use a vacuum cleaner with a long crevice nozzle attached to remove any visible lint from the upper air flow openings.
8. Clean all lint filters with water:
9. Wipe the smooth plastic surfaces of the lint filters with a damp cloth to clean them.
10. Rinse the filter surfaces under warm running water.
11. Push the lower lint filter in completely and lock it with the yellow knob.
12. Push the upper lint filter in completely.
13. Close the door.

Then what

Worth ten minutes of your own before it is worth a visit. Every dryer Miele sells here is a heat-pump machine, and the two things an owner can genuinely fix on one — a full condensate container and a blocked filter — are the two the machine complains about most. In this climate the second one comes round faster than the manual suggests, because the air going into the machine is already carrying water.

Miele publishes this one for the heat-pump dryers. The full Miele archive has the other conditions, searchable, and on this make the same number appears on more than one machine roughly a third of the time, so the appliance above is part of the answer. We repair this equipment across Miami-Dade, Broward and Palm Beach.