English instructions for use
45
Problem
Possible cause
Action
The device gradually
gets warmer.
The air filter is dirty.
Clean the air filter (see
p. 42).
When cleaning with water,
dry the air filter completely
before using the device
again.
After tapping, the
bubbling fails to stop
after a few seconds.
The device may be
defective.
In this case, contact
customer service (see
p. 48).
If the above measures do not solve the problem, contact customer
service (see p. 48).