OPERATION
Cleaning, care and maintenance
ENGLISH
www.stiebel-eltron.com CK 20 Trend LCD | 21
7. Cleaning, care and maintenance
The appliance contains no user serviceable parts.
Material losses
- Never spray cleaning spray into the air slot.
- Ensure that no moisture can enter the appliance.
- If a pale brownish discolouration appears on the appliance
casing, wipe it off with a damp cloth.
- Clean the appliance when cold with ordinary cleaning prod-
ucts. Avoid abrasive or corrosive cleaning products.
Dust filter cleaning
f Clean the dust filter at regular intervals. The dust filter can
be pulled out from the side of the appliance.
You may need to detach the appliance from the wall mount-
ing bracket beforehand (see chapter "Preparations/ Installa-
tion site").
D0000069514
8. Troubleshooting
Problem Cause Remedy
The appliance does
not deliver the
required heating
output.
The dust filter is heavily
soiled.
Check and, if necessary,
clean the dust filter.
Room does not get
warm enough. Ap-
pliance does not get
hot.
Temperature set too low
on the appliance.
Check the temperature set
on the appliance. Adjust if
necessary.
No power supply. Check the RCD and the fuse/
MCB in the fuse box.
Fuse has blown. Appliance cannot be re-
started.
Room does not get
warm enough al-
though the appliance
is hot.
Overheating. High limit
safety cut-out limits
heating output.
Eliminate the cause (dirt or
obstructions at the air inlet
or outlet). Observe minimum
clearances.
The heat demand of the
room is higher than the
appliance output.
Remedy heat losses (Close
windows and doors. Avoid
constant venting.)
The room gets too
hot.
The appliance tempera-
ture is set too high.
Check the selected room
temperature. Adjust if nec-
essary.
Detected room tempera-
ture does not match actu-
al room temperature.
Avoid obstructions to air
changes between appliance
and indoor air.
Window open de-
tection does not
respond.
Appliance does not detect
a pronounced tempera-
ture drop when venting.
(Window open detection
requires a previously sta-
ble room temperature.)
Wait a while after making
settings on the appliance,
until the room temperature
has fully stabilised.
Avoid obstructions to air
changes between appliance
and indoor air.
Manually switch the appli-
ance to standby mode for the
duration of venting.
Window open detection
is not enabled.
Switch on window open de-
tection in the standard menu.
"Adaptive start" func-
tion does not work as
required.
This function is only ef-
fective in timer mode.
Use the timer mode for opti-
mised heating convenience.
Severely fluctuating room
temperature or the appli-
ance learning procedure
has not been completed.
Wait a few days for the be-
haviour to stabilise.
"Adaptive start" function
is not enabled.
Switch on the "Adaptive
start" function in the stand-
ard menu.
"Err" or "E..." is dis-
played.
Internal fault detected. Notify the qualified con-
tractor.
If you cannot remedy the fault, contact your qualified contractor.
To facilitate and speed up your request, provide the number from
the type plate (000000-0000-000000).
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