Cleaning, Care And Maintenance; Troubleshooting; Installation; Safety - Stiebel Eltron CNS 50 Trend Utilisation Et Installation

oPerATIoN | INSTALLATIoN

Cleaning, care and maintenance

6. 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.
Note
We recommend having the control components checked
as part of regular maintenance.
f Have a qualified contractor check the safety and
control components no more than 10 years after
commissioning.
7.

Troubleshooting

Problem Cause
Room does not get Temperature set too low
warm enough. Ap- on the appliance.
pliance does not get
hot.
No power supply.
Room does not get Overheating. High limit
warm enough al- safety cut-out limits
though the appliance heating output.
is hot.
The heat demand of the
room is higher than ap-
pliance output.
Room gets too hot. Temperature set too high
on the appliance.
Detected room tempera-
ture does not match actu-
al room temperature.
Window open de- Appliance does not detect
tection does not a pronounced tempera-
respond. ture drop due to venting.
(Window open detection
requires previously sta-
ble room temperature.)
Window open detection
is not enabled.
22 | CNS Trend | CNS Trend U
remedy
Check the selected room
temperature. Adjust if nec-
essary.
Check position of the ON/OFF
switch, RCD and fuse/MCB in
your fuse box.
Eliminate the cause (dirt or
obstructions at the air inlet
or outlet). Observe minimum
clearances.
Remove heat losses (Close
windows and doors. Avoid
constant venting.)
Check the selected room
temperature. Adjust if nec-
essary.
Avoid obstructions to air
change between appliance
and indoor air.
Wait a while after making
settings on the appliance,
until the room temperature
has fully stabilised.
Avoid obstructions to air
change between appliance
and indoor air.
Manually switch the appli-
ance into standby mode for
the duration of venting.
Switch on window open
detection in the standard
menu.
Problem Cause
"Adaptive start" func- This function is only ef-
tion does not work as fective in timer mode.
required.
Severely fluctuating room
temperature or the appli-
ance learning procedure
has not been completed.
"Adaptive start" function
is not enabled.
Appliance is in "FP" When the appliance does
program but does not not detect a signal at the
respond to external external input, it heats in
input. comfort mode.
"Err" or "E..." is dis- Internal fault detected.
played.
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).

INSTALLATIoN

8.

Safety

Only a qualified contractor should carry out installation, commis-
sioning, maintenance and repair of the appliance.
8.1

General safety instructions

We guarantee trouble-free function and operational reliability only
if original accessories and spare parts intended for the appliance
are used.
CAUTION Burns
- Only mount the appliance on a vertical wall that is
temperature-resistant to at least 85 °C.
- Maintain the minimum clearances to adjacent ob-
jects.
Material losses
!
- Never install the appliance directly below a wall
socket.
- Ensure that the power cable is not in contact with
any appliance components.
8.2

Instructions, standards and regulations

Note
Observe all applicable national and regional regulations
and instructions.
remedy
Use the timer mode for opti-
mised heating convenience.
Wait a few days for behav-
iour to stabilise.
Switch on the "Adaptive
start" function in the stand-
ard menu.
Check external control unit
and its settings. Wiring must
be installed correctly and
with correct polarity.
Notify the qualified con-
tractor.
www.stiebel-eltron.com