Miele DA 420-4 Operating And Installation Manual - Page 20

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Operation

Reading the operating hours counter

for the charcoal filter

To check the percentage of time set

already used:

^ Press the On/Off control to switch the

fan on.

^ Press and hold the charcoal filter

control.

One or more of the indicator lamps for

the – / + controls will flash.

The number of flashing lamps shows

the percentage of the operating time

which has already been used up.

1 lamp

= 25 %

2 lamps = 50 %

3 lamps = 75 %

4 lamps = 100 %

The number of operating hours used

remains in the memory, even when the

appliance is switched off or there is a

power cut.