A dark CM6 display can be normal standby, a main-switch position, a disconnected plug or a tripped household circuit before it indicates an internal fault. Treat the display or symptom as a clue, not as proof that a pump, grinder or board must be replaced. Change one user-accessible condition at a time and let every shutdown finish. The appliance is not receiving power or has entered the configured switch-off mode and needs a deliberate wake-up. Check whether other appliances work on the outlet and whether the CM6 main switch is on; do not repeatedly reset a breaker that trips again. Set the main switch to I, insert the plug fully, wake the machine with the On/Off sensor and check the household fuse only once with dry hands. If the outlet is live but the display stays dark, leave the machine unplugged and arrange Miele service; do not open the housing.
Models covered
- Miele CM 6160 MilkPerfection · CM 6160
- Miele CM 6360 MilkPerfection · CM 6360
- Miele CM 6560 MilkPerfection · CM 6560
Safety first
- Keep water out of the bean hopper, grinder and electrical openings. Never reach inside a running grinder or force a hot, pressurised component.
What the symptom may indicate
Checks in the right order
- Confirm the pattern
The appliance is not receiving power or has entered the configured switch-off mode and needs a deliberate wake-up.
- Prepare safely
Finish the automatic shutdown, unplug the machine and let hot surfaces cool. Remove only the tank, tray, brew group or cleaning accessory named by the manufacturer.
- Apply the official check
Set the main switch to I, insert the plug fully, wake the machine with the On/Off sensor and check the household fuse only once with dry hands.
- Retest once
If the outlet is live but the display stays dark, leave the machine unplugged and arrange Miele service; do not open the housing.
Stop and get qualified help when
- Stop for a harsh grinder noise, repeated electrical error, uncontrolled leak, burning smell or a symptom that returns after the one official retest.
Next step
Repair, replace a part, or arrange a diagnosis?
Use the checks and stop conditions above to choose a cautious next step. A symptom alone never proves that the appliance has failed.
Resolve it without buying anything
Complete the 4 user-accessible checks in order. If normal operation returns and no warning sign remains, no replacement is indicated.
Replace only the confirmed part
If the checks isolate a worn or blocked component, match its complete reference to the exact appliance model before ordering.
This guide does not identify a replacement part. Do not order a generic component from the symptom alone.
Arrange a diagnosis before replacing the appliance
Stop at any warning sign listed above. A qualified diagnosis should confirm that repair is unsafe, unavailable or uneconomical before an appliance replacement is considered.
Sources used
- Miele — Miele's official material documents “Miele CM6 display is dark and machine will not start” and the user checks retained here.
Last checked: 30 August 2026