REINSERTING THE FILTER
1. Reinsert the filter until the locking mechanism has
clicked in securing the filter in the device.
2. Close the fan unit again with the back grid. Make sure
the back grid is set it correctly as the device will oth-
erwise not turn on.
TROUBLE SHOOTING
With regular use, the filter should be cleaned at least
once every 2 weeks. After some time without cleaning,
the filter can give off a continuous clicking noise. When
that happens it is necessary to clean the filter according
to the cleaning instructions.
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