Error code reference

Miele Dryer Error Code F66

Air leakage: temperature at heater bank temperature sensor exceeds 338°F (170°C) indicating clogged air paths or insufficient air flow.

SourceMiele T8000 Series Dryer - Service Manual (T8002-T8019CI)p. 090-18

Miele codes Miele dryer codes

Diagnostic procedure

The full F66 procedure

Step 1 is visible so you can confirm you are on the right page. The remaining steps, the ones that tell you whether to actually replace a part, unlock with any pass.

MyPros+ · DiagnosticsStep 1 preview

First diagnostic step

Check and clean the air paths; clean door lint filter, vent grille (vented), fill ring lint filter and heat exchanger (condenser).

SourceMiele T8000 Series Dryer - Service Manual (T8002-T8019CI)p. 090-18

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More steps, wiring diagram references, and verified part numbers

Includes expected resistance and voltage values, connector pinouts, and supersession notes for replacement parts.

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Where this code is documented

3 manuals in the MyPros+ library document this code for Miele dryer.

Models covered by the manuals that document this code

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The full F66 procedure

Where this code is documented

Models covered by the manuals that document this code

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