Maintenance / Troubleshooting - HEYLO HL 400 Bedienungsanleitung

11. Maintenance / Troubleshooting

Warning: Risk of electric shock
The device must be disconnected from the mains before maintenance work is carried out on it. Do not
clean electrical components with a water hose or pressure washer, as water may enter the electrical
part and cause an electric shock.
When disassembling components, please turn the screws by hand to avoid damage to the
retractable threads!
Search and fix errors
Problem
The unit does not respond
to switch-on
Air is polluted but the
display shows clean
(green)
The air quality display is
still very poor (red), even
though the product has
been switched on for a
long time.
If a strange noise
(knocking, chirping)
comes out of the device
If the product smells
strange
If the product does not
noticeably improve air
quality even after a long
period of operation
When the product is
switched on and shortly
after it is automatically put
into sleep mode
Possible reason
 No power to the
device
 Device does not stand
on a plain surface
 Front cover is not
closed properly
 Child lock is active
Device position is
unfavourable
Air sensor is dirty
Ionizer i s dusty
Filter is saturated
 Filter not removed
from protective
packaging
 Filter not inserted
correctly
Wrong operating mode
22
Solution
1. Make sure that the power plug is fully
inserted into the power outlet, then press
the power button to turn on the unit
2. Make sure that the front cover is inserted
correctly.
3. Make sure that the product is properly
installed on a plain surface.
4. When the display shows the child-proof
lock, press the "Child-Lock" button for 5
seconds to deactivate the lock and use the
device.
Position the unit differently so that the air in
the room can be better absorbed.
Clean the particle sensor with a cotton
bud as described in "cleaning and filter
change".
Clean the ionizer head with a brush as
described in section "cleaning and filter
change".
1. Clean the air inlet opening and internal
filter (pre-filter, integrated filter).
2 If you have not replaced the filter for a
long time, buy a new filter and replace
it.
1. Make sure that the packaging of the filter
(plastic bag) inside the product has been
properly removed
2. Make sure that the order of the filter
combination is correct
Please deactivate the sleep mode (night
mode).
EN