Webasto SmartControl User manual

EN
Operating instructions
SmartControl
MultiControl (incl. Timer-Function)
MultiControl
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SmartControl
Table of Contents
1 Introduction......................................................................5
. Purpose of the document ............................................................... 
. Using this document ...................................................................... 
. Use of symbols and highlighting .....................................................
. Warranty and liability ..................................................................... 
2 Safety ...............................................................................6
. Intended use .................................................................................. 
. General safety information ............................................................
3 Overview ..........................................................................7
. Control element and menu structure .............................................. 
. Symbols ......................................................................................... 
. Buttons and control ....................................................................... 
3.3.1 Back-function .....................................................................................................9
. Status display .................................................................................
. Passive display mode ...................................................................... 
. Information display ......................................................................
. Selecting the heating level .............................................................
4 Switching on the heater by means of quick start button .11
. Quick start of air heater ................................................................. 
. Quick start of water heater ............................................................ 

5 Heating mode .................................................................12
. Water heater .................................................................................
. Air heater ......................................................................................
5.2.1 Adjusting temperature during heating mode .....................................................13
5.2.2 Adjusting the heating level during heating mode ..............................................13
. Adjusting the remaining operation time .........................................
5.3.1 Remaining operation time of water heater ........................................................14
5.3.2 Remaining operation time of air heater .............................................................14
6 Ventilation mode ............................................................14
. Setting ventilation through main menu ..........................................
. Setting the fan speed during ventilation mode...............................
. Setting the remaining operation time of fan during
ventilation mode ...........................................................................
7 Switching off .................................................................16
8 Programming the Timer menu (time setting) ...................16
. Timer: Setting the time setting.......................................................
. Timer: Setting the heating mode: .................................................. 
. Timer: Setting the ventilation mode ...............................................
. Deactivating, editing or removing timers .......................................
. Delete all timers ...........................................................................
9 Settings ..........................................................................21
. General ........................................................................................
. Altitude correction (if available) .....................................................
. Setting the quick start button default value .................................. 
9.3.1 Setting the quick start button for heating mode ................................................22
9.3.2 Setting the quick start button for ventilation mode ...........................................23
. Setting the day of the week ......................................................... 
. Setting the time ........................................................................... 
. Language settings ........................................................................ 
. Setting the temperature unit ........................................................
. Setting brightness ........................................................................ 
. Setting screen timeout .................................................................
. Setting day/night illumination ....................................................... 
. Displaying the system information ................................................ 
. Displaying stored error information .............................................. 
. Performing reset ........................................................................... 
10 Cleaning ........................................................................29
11 Error message .................................................................29
. Error codes ................................................................................... 
. Examples of error messages for control elements .......................... 
12 Disposal ..........................................................................30
13 Service and customer services .........................................30
14 Technical data .................................................................30

5
1 Introduction
So that you can enjoy the full comfort of using a Webasto heater, we recommend that
you read the instruction manual carefully. Questions connected with the assembly and
functioning of the device should be addressed to the seller or the installation workshop.
They will provide you with reliable and competent advice.
You can also contact one of our oces. ou can find address data in the chapter “Techni-
cal support and customer service”.
Please keep this instruction manual.
Have a nice trip!
1.1 Purpose of the document
This instruction manual is a part of the device and it contains information for the user
enabling safe use of the device.
All the functions of the control element are explained in the instruction manual. If you
have any questions please consult the technical support and/or customer service (see
chapter “Technical support and customer service”)
The actual availability of these functions depends on each installed heater.
1.2 Using this document
X Before operating the heater, carefully read these operating instructions as well as the
operating instructions for the heater.
X Hand this operating instruction on to the following owner or user of the unit.
1.3 Use of symbols and highlighting
Texts with the symbol refer to separate documents which are enclosed or can be
requested from Webasto.
Texts with the symbol refer to technical features.
Texts with the symbol or refer to possible material damage, risk of accident
or injury.
Highlight Explanation
3 Requirements for the following necessary action
X Necessary action
6
1.4 Warranty and liability
Webasto shall not assume liability for defects or damage that are the result that the
installation and operating instructions as well as the instructions contained therein being
disregarded.
This liability exclusion particularly applies for:
Ŷimproper use
Ŷrepairs not carried out by a Webasto service workshop
Ŷuse of non-genuine parts
ŶConversion of the unit without permission from Webasto
2 Safety
2.1 Intended use
The built-in control element is used to control the heater.
2.2 General safety information
WARNING
Risk of explosion in environments with combustible vapours,
flammable dust and hazardous goods (e.g., petrol stations, tank
facilities, fuel store, coal bunkers, timber yard or grain warehouses)
X Do not switch on or operate the heater.
WARNING
Inhaling poisonous gases in the enclosed rooms
Intoxication and suffocation
X Never operate the heater (also not with programmed heating start) in
closed rooms such as garages or workshops that do not have an exhaust
extraction unit.
WARNING
Risk of fire from flammable materials or liquids in the hot air flow
(Air heaters)
X Keep the hot air flow free.
WARNING
Risk of injury from the defective unit
X Do not operate a defective heater.
X Contact a Webasto service workshop.

7
3 Overview
3.1 Control element and menu structure
Heating
1 Menu name
2 Menu symbol
3 Activated time settings, ADR display*,
altitude correction*
4 Time
5 Quick start button with status
display
6 Control knob
The following menu elements are available in the main menu: timer, heating,
ventilation* and settings.
*: Optional
3.2 Symbols
Symbol Description Symbol Description
Timer menu (time setting) Ventilation menu
Heating-Normal Settings menu
Heating level Normal Heating level Eco*
Heating level Boost* Fan speed (level 1-4)
Add timer Activate timer
8
Symbol Description Symbol Description
Deactivate timer Delete timer
Delete all timers Active timer
Quick start Day of the week
Time Language
Temperature unit Day/Night
System information Error message
Reset Service required
To the left Attention
Back To the right
12 hour format Symbol for confirmation
Operating voltage too low ADR
Altitude correction selected
* depending on the heater
3.3 Buttons and control
Button Control and function
Quick start button with status display
Turn the control knob (turn/push button) for selection of the function.
Press the control knob (turn/push button) for confirmation of the selec-
ted function.

9
3.3.1 Back-function
Back
Exit the selected menu with the "Back" function.
The settings are saved and the higher-level menu level is displayed.
3.4 Status display
Status of the heater is indicated by means of the colour backlight of the quick start
button.
Status LED backlight
Heating mode GREEN permanent
Ventilation mode BLUE permanent
Switched off heater - control element is activated WHITE permanent
Error - no heating mode, see chapter „11 Error mes-
sage“ on page 29.
RED flashing
Preprogrammed heating mode - control element in
stand-by mode
GREEN flashing
Preprogrammed ventilation mode - control element in
stand-by mode
BLUE flashing
If a user does not make any entry by means of the control element for 60
seconds and the heater is switched off then the control element will go into
the stand-by mode (display and LED are switched off).
3.5 Passive display mode
If the heater is activated by another Webasto control element (e.g. Telestart or Thermo-
call), the control element wakes up from sleep mode and the operation mode selected
by the other control element is shown on the display. Displayed information depends on
the connected heater.
Display Operating mode
Heating
X The passive mode can be deactivated by pressing quick start button
. The heater is switched off.
10
Display Operating mode
Ventilation (ventilating mode must be supported by the installed
heater)
X The passive mode can be deactivated by pressing quick start button
. The heater is switched off.
Heating and ventilation
3There is a possibility of combined display of ventilation and heating
symbols depending on the connected heater.
X The passive mode can be deactivated by pressing quick start button
. The heater is switched off.
3.6 Information display
The following information about the connected heater and control
element is shown in the start display:
ŶName of the control element
ŶName of the connected hea
ŶSoftware version of the connected control element
ŶHardware version of the connected control element
The view returns to the main menu after 1.5 seconds.
Example
3.7 Selecting the heating level
The selection of the heating level is not supported by all heaters.
There are three heating levels:
Heating level Heating mode
Eco Energy-savings mode
Normal Comfort heating
Boost Rapid heating
The heating levels differ in terms of energy consumption and time during which the set
temperature is reached. Eco heating level needs the least energy. However, it takes more
time to reach the set temperature.

11
4 Switching on the heater by means of quick start
button
“Quick start” function enables heating or ventilation by simply pressing the button ( ).
The operating mode can be adjusted to your personal preferences.
ŶInstruction manual and description of the settings can be found in the
chapter „9 Settings“ on page 21.
ŶIn delivery condition this function is preset with the standard values.
ŶIf the ignition signal is on before switching on, the heating duration
prolongs itself*. When the ignition signal disappears, there is a remaining
operation time of 15 min. which can be reduced manually*.
* depending on the heater.
4.1 Quick start of air heater
Heating:
3Quick start button is programmed for heating.
X Press quick start button.
Heating starts functioning.
Menu element "Heating" is shown in the display as well as initially
set heating temperature. Quick start button shows green light.
Ventilation:
3Quick start button is programmed for ventilation.
X Press quick start button.
Ventilation starts functioning. Fan speed and operating time are
shown in the display. Quick start button shows blue light.
4.2 Quick start of water heater
Heating:
3Quick start button is programmed for heating.
X Press quick start button.
Heating starts functioning. Menu element "Heating" is shown in
the display as well as initially set remaining operation time. Quick
start button shows green light.
Ventilation:
3Quick start button is programmed for ventilation.
X Press quick start button.
Ventilation starts functioning. Main element "Ventilation" is
shown in the display as well as initially set remaining operation
time. Quick start button shows blue light.
12
5 Heating mode
5.1 Water heater
X Select “Heating” menu element in the main menu.
Heating
X Press the control knob.
Duration flickers in the display.
X Turn the control knob in order to choose the desired dura-
tion of an hour.
By means of turning the control knob in clockwise
direction one can select and activate maximum
duration.
Duration
Heating
X Press the control knob in order to confirm selection.
Setting the duration for minutes is done in the same
way as the duration for hours.
Heating mode has started. Menu element "Heating" is shown
in the display as well as initially set remaining operation time.
Quick start button shows green light.
5.2 Air heater
The selection of the temperature and/or the heating level is not supported by
all heaters.
X Select “Heating” menu element in the main menu
Heating
X Press the control knob.
Heating level is shown in the display.
Normal
Heating
3For heaters with adjustable heating levels:
X Turn the control knob in order to choose the desired heating
level.
Heating
All heaters:
X Press the control knob in order to confirm selection.

13
Heating temperature is shown in the display.
X Turn the control knob in order to choose the desired
temperature.
Temperature
Heating
X Press the control knob in order to confirm selection.
Heating starts functioning.
Menu element "Heating" is shown in the display as well as the
selected heating temperature.
Quick start button shows green light.
5.2.1 Adjusting temperature during heating mode
3The heater is in the heating mode.
X Turn the control knob and choose the desired temperature.
X Press the control knob within 5 seconds in order to confirm
selection.
5.2.2 Adjusting the heating level during heating mode
3Heater with selectable heating levels
3The heater is in the heating mode.
X Press the control knob in order to go from temperature
selection to heating level selection.
X Turn the control knob in order to choose the desired heating
level.
X Press the control knob within 5 seconds in order to confirm
selection.
5.3 Adjusting the remaining operation time
If a longer remaining operation time is required then a longer remaining
operation time must be set again. One cannot make any changes from the
minimum duration which amounts to 10 minutes. Increasing the operation
time is possible only after switching off and then restarting the device.
14
5.3.1 Remaining operation time of water heater
3The heater is in the heating mode.
X Turn the control knob in order to choose duration of a
minute.
Duration
Heating
X Press the control knob in order to confirm selection.
Heating starts functioning. Menu element "Heating" is shown
in the display as well as initially set remaining operation time.
Quick start button shows green light.
5.3.2 Remaining operation time of air heater
3The heater is in the heating mode.
3Heater with selectable heating levels:
X Press the control knob in order to go from temperature
selection to heating level selection.
X Press the control knob in order go from heating level to
remaining operation time selection.
3Heater without selectable heating levels:
X Press the control knob in order to go from temperature
selection to remaining operation time selection.
All heaters:
X Turn the control knob in order to adjust remaining operation
time.
By means of turning the control knob in anticlockwise direction
one can shorten remaining operation time.
X Press the control knob within 5 seconds in order to confirm
selection.
6 Ventilation mode
The ventilation mode is not supported by all heaters.
Ventilation mode activates only the fan, heating mode is still on. First of all, it enables to
cool the interior by providing fresh air during air inlet from the outside. There are four
fan speeds available.
They differ in the strength of air flow and in how fast the air exchange takes place.
Fan speed 1 Fan speed 3

15
Fan speed 2 Fan speed 4
6.1 Setting ventilation through main menu
3“Ventilation” symbol has been selected in the main menu.
Ventilation
X Press the control knob.
The set fan speed is shown in the display
Level 2
Ventilation
X Turn the control knob in order to choose the desired fan
speed.
X Press the control knob in order to confirm selection.
Duration flickers in the display. Level 4
Ventilation
X Turn the control knob in order to choose the desired dura-
tion of an hour.
By means of turning the control knob in clockwise direction one
can select and activate maximum duration. Duration
Ventilation
X Press the control knob in order to confirm selection.
Setting the duration for minutes is done in the same
way as the duration for hours.
Ventilation starts functioning.
Fan speed and selected duration are shown in the display.
Quick start button shows blue light.
6.2 Setting the fan speed during ventilation mode
3The heater is in the ventilating mode
X Press the control knob in order go from remaining operation
time selection to fan speed selection.
16
X Turn the control knob in order to choose fan speed.
X Press the control knob within 5 seconds in order to confirm
selection.
6.3 Setting the remaining operation time of fan during ventila-
tion mode
3The heater is in the ventilating mode
X Turn the control knob in order to adjust the desired remain-
ing operation time.
By means of turning the control knob in anticlockwise direction
one can shorten remaining operation time.
If longer remaining operation time is desired then longer remai-
ning operation time must be reset.
X Press the control knob within 5 seconds in order to confirm
selection.
7 Switching off
3Heater in operation
X Press quick start button.
Backlight of quick start button changes its colour from blue (in ventilation
mode) or green into white colour (in heating mode).
8 Programming the Timer menu (time setting)
This function is available only for control element of MultiControl.
There is a possibility of programming the time settings 7 days in advance. The heater
switches on automatically at the programmed time. There is a possibility of saving up to
3 time settings per day and altogether up to 21 time settings.
Depending on the used variant of MultiControl device and application case (e.g. in a car,
in a truck, on the boat, etc.), the number of actively available timers can fluctuate. There
are maximum 21 active timers available.
The desired temperature or fan speed should be set in accordance with the desired
operating mode (“heating” or “ventilation”).

17
8.1 Timer: Setting the time setting
3Time and current day of week are set.
3The heater is switched off.
3“Timer” menu element has been selected in the main menu. Timers
X Press the control knob.
”Add timer” message (if no timer has been saved yet) appears
in the display.
Add timer
Timers
X Press the control knob in order to add new timer.
X Turn the control knob in order to choose ”Day”.
Day
Timers
Mon
X Press the control knob in order to confirm selection.
X Turn the control knob in order to choose the switch-on time
of an hour.
Start time
Timers
X Press the control knob in order to confirm selection.
Setting the switch-on time for minutes is done in the
same way as the switch-on time for hours.
X Turn the control knob in order to choose the switch-off time
of an hour.
Stop time
Timers
X Press the control knob in order to confirm selection.
Setting the switch-off time for minutes is done in the
same way as switch-off time for hours.
Depending on the required setting, either:
X set heating mode: see „8.2 Timer: Setting the heating mode:“ on page 17.
X set ventilation mode, see „8.3 Timer: Setting the ventilation mode“ on page 18.
8.2 Timer: Setting the heating mode:
3Only for air heaters with selectable heating level:
X Turn the control knob in order to choose the desired heating
level.
Normal
Timers
X Press the control knob in order to confirm selection.
18
3Only for air heaters:
X Turn the control knob in order to choose the desired tem-
perature.
Temperature range: 5 - 35 °C, 41 - 95 °F Temperature
Timers
All heaters:
X Press the control knob in order to confirm selection.
The timer is saved and shown in the display (temperature display
only for air heaters).
Mon 1
X Press the control knob in order to activate the timer.
“Activate” message appears in the display.
Activate
Timers
X Press the control knob in order to confirm activation.
Activated time setting is marked by white bars.
Mo 1
“T” symbol appears in the main menu.
Quick start button flashes green when timer together with
heating is active.
Timers
8.3 Timer: Setting the ventilation mode
X Turn the control knob in order to choose the desired Venti-
lation mode.
Ventilation
Timers
X Press the control knob in order to confirm selection.
Only for air heaters:
X Turn the control knob in order to choose the desired fan
speed.
Level 2
Timers
All heaters:
X Press the control knob in order to confirm selection.
The programmed timer is saved and shown in the display.
(display of fan speed only for air heaters).
Mon 1

19
X Press the control knob in order to activate the programmed
timer.
“Activate” message appears in the display.
Activate
Timers
X Press the control knob in order to confirm activation.
Activated time setting is marked by white bars.
“T” symbol appears in the main menu.
Quick start button flashes blue when timer together with
ventilation is active.
Mon 1
8.4 Deactivating, editing or removing timers
3“Timer” symbol has been selected in the main menu.
3Deactivation using the example of a ventilation timer. Proceed analo-
gously for the heating timer.
3Proceed for "activating", "editing" or "deleting" analogously. Timers
X Press the control knob.
The stored timers appear in the display. Timers are arranged in
chronological order according to days/hours. Next active timer
is displayed as the first one. (display of fan speed only for air
heaters).
Mon 1
X Turn the control knob in order to choose the timer.
X Press the control knob in order to confirm selection.
Deactivate
Timers
X Turn the control knob in order to choose operation ("acti-
vate", "deactivate", "edit", "delete").
20
8.5 Delete all timers
3“Timer” symbol has been selected in the main menu.
Timers
X Press the control knob.
The stored timers appear in the display. (display of fan speed
only for air heaters)
Mon 1
X Turn the control knob clockwise until “Delete all” message is
shown in the display.
Delete all
Timers
X Press the control knob in order to confirm selection.
“OK” is shown in the display.
Delete all
Timers
X Press the control knob in order to confirm selection.
All programmed timers have been removed. The main menu is
shown in the display.
Timers

21
9 Settings
9.1 General
Choose the menu element "Settings"
Settings
X Press the control knob.
Quick start
Settings
X Turn control knob, choose the desired menu element.
If altitude correction is available, this is shown as the
first menu point.
9.2 Altitude correction (if available)
Altitude correction can be switched on when operating certain heaters at higher altitu-
des (>1500m).
See the operating instructions for the heater.
Altitude correction is reset in stand-by mode and when the heater is switched
off, and must be switched on again when restarting the heater, if required.
3The menu element "Settings" has been chosen.
X Press the control knob to select the altitude correction
function.
“Off” option is preset.
X Press the control knob to confirm the altitude correction
function.
When altitude correction is active, the altitude correction symbol is shown at the
top left in the main menu.
22
9.3 Setting the quick start button default value
Depending on your choice, the quick start button can switch on either ventilation
made or heating mode. Quick start can be changed as required from heating mode to
ventilation mode or the reverse.
9.3.1 Setting the quick start button for heating mode
3The menu element "Settings" has been chosen.
X Press the control knob in order to choose “Quick start”
menu element.
Quick start
Settings
The current operating mode is displayed.
(example, ventilation mode is set)
3Heater with selectable heating level:
X Turn the control knob in order to choose the heating level.
(example, with temperature display)
Settings
X Press the control knob in order to confirm selection.
3Only for air heaters:
X Turn the control knob in order to choose the desired
temperature.
Temperature
Heating
X Press the control knob in order to confirm selection.
All heaters:
Duration flickers in the display.
X Turn the control knob in order to choose the desired dura-
tion of an hour.
Duration
Heating
X Press the control knob in order to confirm selection.
Duration for minutes flashes.
Setting the duration for minutes is done in the same
way as the duration for hours.
The quick start button is set to heating mode.

23
9.3.2 Setting the quick start button for ventilation mode
3The menu element "Settings" has been chosen.
X Press the control knob in order to choose “Quick start”
menu element.
Quick start
Settings
The current operating mode is displayed.
(example, heating mode is set)
Settings
X Turn the control knob in order to choose the desired “Ven-
tilation” mode.
Level 2
Settings
X Press the control knob in order to confirm selection.
3Only for air heaters
X Turn the control knob in order to choose the desired fan
speed.
Level 2
Ventilation
X Press the control knob in order to confirm selection.
All heaters:
Duration flickers in the display.
Duration
Ventilation
X Turn the control knob in order to choose the desired dura-
tion of an hour.
X Press the control knob in order to confirm selection.
Duration for minutes flashes.
Setting the duration for minutes is done in the same
way as the duration for hours.
The quick start button is set to ventilation mode.
If ventilation mode is not possible, set the quick start button to
heating mode.
24
9.4 Setting the day of the week
3The menu element "Settings" has been chosen.
X Turn the control knob in order to choose the desired Day.
Weekday
Settings
X Press the control knob in order to confirm selection.
X Turn the control knob in order to choose the desired ”Day”.
Weekday
Settings
Mon
X Press the control knob in order to confirm selection.
9.5 Setting the time
3The menu element "Settings" has been chosen.
X Turn the control knob in order to choose menu element
“Time”.
Time
Settings
X Press the control knob in order to confirm selection.
X Turn the control knob in order to choose the desired time
mode (12/24).
Time mode
Settings
X Press the control knob in order to confirm selection.
Hour flickers in the display.
X Turn the control knob in order to choose an hour.
Set time
Settings
X Press the control knob in order to confirm selection.
Time (minutes) flashes.
Setting the time for minutes is done in the same way
as the time for hours.

25
9.6 Language settings
3The menu element "Settings" has been chosen.
X Turn the control knob in order to choose menu element
“Language”.
Language
Settings
X Press the control knob in order to confirm selection.
X Turn the control knob in order to choose the desired
language (example "English")
Language
Settings
English
X Press the control knob in order to confirm selection.
9.7 Setting the temperature unit
3The menu element "Settings" has been chosen.
X Turn the control knob in order to choose menu element
“Temperature unit”.
Units
Settings
X Press the control knob in order to choose the temperature
unit.
This setting is taken over without confirmation.
Units
Settings
9.8 Setting brightness
Depending on the installation, the screen brightness adapts using the vehicle
signal.
3The menu element "Settings" has been chosen.
X Turn the control knob in order to choose menu element
“Brightness”.
Brightness
Settings
X Press the control knob in order to confirm selection.
X Turn the control knob in order to choose the desired value.
The adjustment value flashes
Brightness
Settings
X Press the control knob in order to confirm selection.
26
9.9 Setting screen timeout
3The menu element "Settings" has been chosen.
X Turn the control knob in order to choose menu element
“Screen timeout”.
Screen timeout
Settings
X Press the control knob in order to confirm selection.
X Turn the control knob in order to choose the desired time or
“Auto” mode.
Day/Night
Settings
X Press the control knob in order to confirm selection.
After selecting „Auto” mode the screen does not
switch off during active heating/ventilation. If no
heater is active then while setting “Auto” the screen
switches off after 10 seconds.
9.10 Setting day/night illumination
In the case of the screen illumination you can select between the day and
night illumination. If „Off” option is selected then the general setting of bright-
ness level is activated with no distinction between the day and night.
3The menu element "Settings" has been chosen.
X Turn the control knob in order to choose menu element
“Day/Night”.
Day/Night
Settings
X Press the control knob in order to confirm selection.
“Off” option is preset.
X Turn the control knob in order to set the value for the start
of the day, the end of the day, brightness during a day,
brightness at night.
Preset time for a day is shown in the display. Day/Night
Settings
X Press the control knob in order to confirm selection.
An hour for the start of the day flickers in the display.
X Turn the control knob in order to choose the desired start of
the day an hour.
Start of
daytime
Settings
X Press the control knob in order to confirm selection.
Time of a minute for the start of the day flickers in the display.
Setting the minutes for start of day is done in the
same way as the hours for start of day.

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X Turn the control knob in order to choose the desired hour
for end of day.
End of daytime
Settings
X Press the control knob in order to confirm selection.
Time of a minute for the end of the day flickers in the display.
Setting the minutes for end of day is done in the
same way as the hours for end of day.
“Day” brightness level appears in the display.
X Turn the control knob in order to choose the desired bright-
ness level ”day”.
Brightness
(Day)
Settings
X Press the control knob in order to confirm selection.
“Night” brightness level appears in the display.
X Turn the control knob in order to choose the desired bright-
ness level ”night”.
Brightness
(Night)
Settings
X Press the control knob in order to confirm selection.
“Day/night” brightness level appears in the display.
The selected values have been saved.
Day/Night
Settings
9.11 Displaying the system information
There are data in the system information regarding software status and control element
status and the name of the connected heater.
3The menu element "Settings" has been chosen.
X Turn the control knob in order to choose menu element
“System information”.
System
information
Settings
X Press the control knob in order to confirm selection.
The heater name is shown in the display.
Heater
Settings
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X Turn the control knob in order to switch between the names
of the heater and information regarding control element
(the name of the control element, status of software and
equipment).
Settings
9.12 Displaying stored error information
If heaters and other connected components show malfunctioning then such error
information codes) is saved and displayed here. Current error information is additionally
marked with “!” symbol.
When an error occurs, error information must be confirmed by pressing the control
knob. The main menu is displayed once again only after confirmation.
3The menu element "Settings" has been chosen.
X Turn the control knob in order to choose menu element
“Error message”.
Error
information
Settings
X Press the control knob in order to confirm selection.
Error message(s) is (are) shown in the display. If there is no
error message then “OK” appears in the display. If there are
more error messages then all the messages can be displayed by
turning the control knob.
Settings
X Press the control knob in order to return to menu element.

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9.13 Performing reset
As for reset option, all settings are restored to factory settings (standard settings are
configured by a service technician) except a day of a week and an hour.
3The menu element "Settings" has been chosen.
X Turn the control knob in order to choose menu element
“Reset”.
X Press the control knob in order to confirm selection.
“OK” is shown in the display.
Reset
Settings
X Press the control knob in order to confirm selection.
Then the restart is performed.
Personal settings are deleted. This procedure cannot
be cancelled. Reset
Settings
10 Cleaning
In order to clean the control element, you should use only a soft lint-free cloth. No moi-
sture can enter the housing. You cannot use window pane cleaning agents, household
cleaners, sprays, solvents, cleaning agents contining alcohol and scouring agents for
cleaning.
11 Error message
Error messages regarding the heater will be displayed with the “F” or “H” marking and
can be found in the appropriate description of the heater. Error messages regarding the
control element are displayed by means of „T” symbol.
3Error message is shown in the display.
X Press the control knob in order to confirm error message.
ŶError message is stored in error memory.
ŶIf not confirmed, the error message is displayed
again (e.g. on restart or when waking up from
sleep mode).
11.1 Error codes
X If error message appears in the display, please contact the technical support/ custo-
mer service.
ATTENTION
Inspections and repairs on heaters must only be carried out by trained
personnel.
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11.2 Examples of error messages for control elements
Code Description
T84 Undervoltage (supply voltage is low)
X Charge the battery and check car electrical installation.
Te4 Defective LED status
X Contact technical support/customer service.
Teb Time error
X In case of voltage interruption amounting to more than 8 minutes: Enter
date/hour again.
X In case an error appears without voltage interruption: Contact technical
support/customer service.
T12 W-bus communication failure. Incorrect heater selected.
X Follow the procedure in the Installation Instructions.
X Contact technical support/customer service (if necessary).
12 Disposal
The control element must not be disposed of in domestic waste.
X You are requested to obey the local regulations concerning disposal of the electronic
products.
13 Service and customer services
Do you have any technical queries or a problem with your unit?
National phone numbers of our representatives are provided on www.webasto.com.
14 Technical data
Operating voltage range: 12 V to 24 V
Permissible ambient temperature:
ŶOperation: –40 °C to +75 °C
ŶStorage: –40 °C to +90 °C
At temperatures below –20 °C protective function of control element display is
active. Display and background illumination are switched off, heating status is
indicated by status of LED diode. The heater can be tuned on and off by quick
start button without any limits.

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Webasto Thermo & Comfort SE
Postfach 1410
82199 Gilching
Germany
Visitors Address:
Friedrichshafener Str. 9
82205 Gilching
Germany
www.webasto.com
Ident. No. 9030550B • 06/17 • Errors and omissions excepted • Printed in Germany • © Webasto Thermo & Comfort SE, 2017
In multilingual versions the German language is binding. If a language is
not available, please contact the Webasto Service Centre for this purpose
(see the brochure with the service phone numbers of the respective
subsidiaries).