INSTALLATION
Troubleshooting
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ENGLISH
8. Troubleshooting
Problem Cause Solution
Room does not get
warm enough. Heat-
er does not get hot.
Temperature set too low
on the heater.
Check the selected room
temperature. Adjust if nec-
essary.
No power supply.
Check position of the ON/OFF
switch, check to ensure cir-
cuit breaker hasn’t tripped.
Room does not get
warm enough al-
though the heater
is hot.
Overheating. High limit
safety cut-out limits
heating output.
Eliminate the cause (dirt or
obstructions at the air intake
or discharge). Observe mini-
mum clearances.
Heat demand of the room
is higher than the heater
output.
Remedy heat losses (Close
windows and doors. Avoid
constant venting.)
The room gets too
hot.
Heater temperature is set
too high.
Check the selected room
temperature. Adjust if nec-
essary.
The “Heating active”
symbol flashes. The
heater does not heat
up.
The electronic room
temperature controller
restricts the duration
between two start times
to at least 10minutes.
Heating remains off until
this period has expired;
the “Heating active” sym-
bol flashes.
Wait until the end of this
period between two start
times.
Window open de-
tection does not
respond.
Heater does not detect a
pronounced temperature
drop when venting. (Win-
dow open detection re-
quires a previously stable
room temperature.)
Wait a while after making
settings on the heater, until
the room temperature has
fully stabilized.
Avoid obstructions to air
changes between heater and
indoor air.
Install the heater in direct
proximity to a window.
Vent the room by fully open-
ing a window.
Manually switch the heater
to standby mode for the du-
ration of venting.
The set room tempera-
ture is set lower than
59 °F (15 °C).
Change the set room tem-
perature to 59 °F (15 °C) or
higher.
Window open detection
is not enabled.
Switch on window open
detection in the standard
menu.
"Adaptive start" func-
tion does not work as
required.
This function is only
effective with a time pro-
gram activated.
Use the time programs for
optimised heating conve-
nience.
Severely fluctuating room
temperature or the heat-
er 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 stan-
dard 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).
INSTALLATION
9. Safety
Only a qualified contractor should carry out installation, commis-
sioning, maintenance and repair of the heater.
9.1 General safety instructions
We guarantee trouble-free function and operational reliability only
if original accessories and spare parts intended for the heater
are used.
DANGER Electrocution
Carry out all electrical connection and installation
work in accordance with all national, state and local
building code.
CAUTION Burns
- Only mount the heater on a vertical wall that is tem-
perature-resistant to at least 185 °F (85 °C).
- Maintain the minimum clearances to adjacent ob-
jects.
Material losses
- If connecting the heater via a wall outlet plug, en-
sure that it is easily accessible once the heater has
been installed.
- Never install the heater directly below a wall socket.
- Ensure that the power cable is not in contact with
any heater components.
9.2 Instructions, standards and regulations
Note
Observe all applicable national and regional regulations
and instructions.
10. Heater description
10.1 Standard delivery
The following are delivered with the heater:
- Wall mounting bracket (hooked into the heater)
- Power cord with 120 V plug (120 V models only, attached)
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