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Webasto Dual Top RHA 100 Manual

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Programmierbares Bedienelement
Programmable Control Panel
Pannello di comando programmabile
Bedienungsanweisung
Operating Instructions
Manuale operativo
DUAL TOP RHA 100
Fig./Abb. 1: Bedienelement /Control Panel /Pannello di comando
Fig./Abb. 2: Statusanzeige /Status Display /
Display di stato
61
2
4
5
3
7 8
9
11
10
Content
IV
Content
1 Introduction ...........................................................................................................63
1.1. Additional documentation to be used .......................................................................64
2 Function description ..............................................................................................65
2.1. Summer mode (hot water only) ................................................................................65
2.2. Winter mode (heating only) ......................................................................................66
2.3. Winter mode (heating and hot water) .......................................................................67
2.4. Advanced functions ..................................................................................................68
3 Operating Instructions ..........................................................................................69
3.1. General ....................................................................................................................69
3.1.1. Control Panel ......................................................................................................70
3.1.2. External LED power indicator...............................................................................73
3.2. Before you start ........................................................................................................74
3.3. Normal operation .....................................................................................................75
3.3.1. Appliance is switched off ....................................................................................75
3.3.2. Switching on the heater ......................................................................................75
Content
V
3.3.3. Switching off the heater ..................................................................................... 76
3.3.4. Setting desired interior temperature ................................................................... 78
3.3.5. Summer mode (hot water only) .......................................................................... 79
3.3.6. Winter mode (heating without hot water production)......................................... 81
3.3.7. Winter mode (heating with hot water production).............................................. 83
3.3.8. Heating while driving.......................................................................................... 86
3.4. Settings setup .......................................................................................................... 87
3.4.1. Day, date, time................................................................................................... 87
3.4.2. Language, temperature unit, hour format, display contrast................................. 88
3.5. Programming timer .................................................................................................. 90
3.5.1. Program setting.................................................................................................. 90
Temperature setting .................................................................................... 90
Day setting .................................................................................................. 92
Day copying ................................................................................................ 96
3.5.2. Heating by timer................................................................................................. 98
3.6. Remote control ...................................................................................................... 100
3.6.1. Show actual mode............................................................................................ 100
3.6.2. Enabling and setting Telestart and Thermo Call ................................................ 102
3.6.3. Disabling Telestart and Thermo Call.................................................................. 104
3.6.4. Start and stop heater operation using Telestart................................................. 105
VI
3.7. Frost .......................................................................................................................106
3.7.1. Draining the boiler manually .............................................................................107
3.7.2. How to stop draining the boiler.........................................................................110
3.7.3. Draining the boiler automatically.......................................................................111
3.7.4. Frost protection mode.......................................................................................113
4 Fault code output ................................................................................................115
4.1. Fuses ......................................................................................................................122
5 Worldwide warranty ...........................................................................................123
DUAL TOP Introduction
63
1 Introduction
Dear Customer,
Thank you for choosing this Webasto Programmable Control Panel for Dual Top integrated heaters.
This product has been designed as a Control Panel for a Dual Top heating system in motor homes.
Please note that this Control Panel and Dual Top heaters are only specified for applications in motor
homes or similar vehicles.
We trust that the workshop / service centre that carried out the installation explained to you the
operation and principle of functioning of your Webasto Dual Top to your complete satisfaction.
These Operating Instructions are intended to give you an additional overview of how to use the
Programmable Control Panel. If you do not understand any information in the instructions or if you
misplace any of them, please contact your authorised Webasto dealer immediately.
Please take the time to read and understand this manual. This enables you to use all features and
makes you feel comfortable and safe.
To ensure safe use of the Dual Top heater, ALWAYS read and follow all instructions in this manual.
Introduction DUAL TOP
64
It is very important that an authorised Webasto dealer carries out any repair or maintenance not
described in this manual.
1.1. Additional documentation to be used
These Operating Instructions contain most of the information and instructions required for operating
the Dual Top RHA 100 integrated heaters with programmable control panels.
However, it is necessary to read additional documentation. The Operating Instructions for the Dual
Top RHA 100 integrated heater must also be used. These operating instructions have been delivered
together with the integrated heater and can also be downloaded from http://dealers.webasto.com.
Go to “Product Documentation“ and select product “Dual Top RHA 100“. Then download the
instructions in pdf format in the required language.
DUAL TOP Function description
65
2 Function description
The Webasto Dual Top RHA 100 integrated heater combines the benefits of an interior heater with
a water boiler and contributes to a gas-free camper.
Depending on which function you wish to have, hot water in summer mode, just hot air or hot air
and hot water in winter mode, several options are available.
2.1. Summer mode (hot water only)
The heater is used for providing hot drinking water. The water is heated up to and kept at 40 °C or
70 °C. The device automatically selects the burner setting.
A water temperature sensor controls the water temperature. Due to variable operating and
environmental influences, small water temperature deviations are possible.
The hot air fan for heating the interior is not activated.
Function description DUAL TOP
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2.2. Winter mode (heating only)
The heater is used for providing hot air.
The desired interior temperature may be adjusted by pushing button (1) or button (2)
(5 ~ 35 °C).
The device automatically selects the burner setting modulating between 1,500 W and 6,000 W
depending on the output requirement (calculated from difference between selected temperature and
current interior temperature).
The amount of heat is regulated to quickly reach the pre-selected interior temperature. Then only a
limited amount of power is needed to hold the interior temperature.
Blown air heating is always possible with or without water in the boiler.
DUAL TOP Function description
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2.3. Winter mode (heating and hot water)
The heater is used for heating the interior and production of hot water. Heat is produced by a diesel
powered burner.
The desired interior temperature may be adjusted by pushing button (1) or button (2)
(5 ~ 35 °C).
The water is heated up to 70 °C.
The device automatically selects the burner setting modulating between 1,500 W and 6,000 W
depending on the output requirement (calculated from difference between selected temperature and
current interior temperature).
The amount of heat is regulated to quickly reach the pre-selected interior temperature. Then only a
limited amount of power is needed to hold the interior temperature.
A water temperature sensor controls the water temperature, while an interior temperature sensor
controls the interior temperature.
Due to variable operating and environmental influences, small water temperature deviations are
possible.
Function description DUAL TOP
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2.4. Advanced functions
• Menu driven user guidance in 6 languages.
• Programmable timer: The device offers two free programmable 7 days, 24 hours heating
programs.
See paragraph 3.5.: Programming timer.
• Remote control by Webasto Telestart and Thermo Call (optional controls).
See paragraph 3.6.: Remote control.
• Boiler drainage: possibility to drain the boiler manually with the Control Panel or automatically as
frost protection.
See paragraph 3.7.: Frost.
• Antifreeze: protects the boiler against frost.
See paragraph 3.7.4.: Frost protection mode.
• Textual fault information: when a fault occurs, a fault message is displayed on the Control Panel.
A number and a brief description inform the user about the kind of fault.
See chapter 4: Fault message.
DUAL TOP Operating Instructions
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3 Operating Instructions
3.1. General
Always observe the Operating Instructions for the Dual Top RHA 100 integrated heater
(delivered together with the integrated heater or download from
http://dealers.webasto.com) as well as for the Programmable Control Panel prior to
starting!
Pay extra attention to "Servicing and safety instructions" and “Maintenance”.
The vehicle owner is responsible for the correct operation of the appliance.
Operating Instructions DUAL TOP
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3.1.1. Control Panel
Changes to the settings on the Control Panel are implemented after a short delay!
See Fig. 1.
1 = Up - button
2 = Down - button
3 = START / STOP / OK - button
4 = MENU / BACK / CANCEL - button
5 = On/off - button
6 = Power indicator / fault indicator (green / red).
During normal operation you will see the status display. See Fig. 2.
7 = Indicator Heater ON / Heater OFF
8 = Remote indicator
9 = Drainage indicator
10 = Interior heating / temperature indicator
11 = Water heating / temperature indicator
DUAL TOP Operating Instructions
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ad 1 and 2: Press up button (1) to increase and down button (2) to decrease desired
temperature, set correct time and date, etc., move blinking cursor and to scroll through
menu.
ad 6: Power indicator lights GREEN when Dual Top is switched on and START (3) is pressed.
Also Heater ON on display (7). Heater functions or standby.
Power indicator is off when STOP (3) is pressed or when Dual Top is switched off. Also
Heater OFF on display (7). No heater function, no standby.
Indicator blinks RED in case there is a fault.
ad 7: Heater ON when Dual Top is switched on and START (3) is pressed. Heater functions or
standby.
Heater OFF when STOP (3) is pressed or when Dual Top is switched off. No heater
function, no standby.
ad 8: Symbol “ “ appears when device is ready to accept signals of remote control.
ad 9: Symbol “ ” appears when drain valve is open.
ad 10: Desired interior temperature is displayed, not actual temperature.
ad 11: Desired water temperature is displayed, not actual temperature.
Operating Instructions DUAL TOP
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Backlight
The backlight of the display lights up when the Dual Top equipment is switched on, no matter if there
is heater operation or not.
It will fade out after some minutes if no button is pressed.
Backlight will light up again after pressing or .
Note:
The display may become darker when the temperature of the Control Panel becomes very high or
when it is placed in direct sunlight.
Avoid that the Control Panel is exposed to high temperatures or direct sunlight.
In case aforementioned conditions could not be avoided, adjust display contrast in “ Setup” (see
paragraph 3.4.2.: Language, temperature unit, hour format, display contrast).
DUAL TOP Operating Instructions
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3.1.2. External LED power indicator
An external LED is mounted in the field of view of the driver to indicate heater operation.
The function is the same as power indicator (6). See paragraph 3.1.1.: Control Panel.
Note:
The external LED does not have a fault indicator function.
Note:
The external LED is an indicator only. Although it looks like a button and it can be pressed, it has no
additional function.
Fig. 3: External LED
Operating Instructions DUAL TOP
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3.2. Before you start
After connecting the appliance to the 12V DC power supply, language, day, date and time have to
be set.
1 Press and to select your preferred language:
“Deutsch”, English”, “Español”, “Français”, “Italiano”, or “Svenska”.
2 Press OK.
3 Press and to select the correct day and date.
4 Press OK.
5 Press and to select the correct time.
6 Press OK.
Standard settings:
- Hour format: 24h
- Temperature unit: °C
- Interior temperature: 21 °C
- Remote control: Disabled
- Timer programs: OFF for all 7 days
lower interior temperature T1 = 15 °C,
higher interior temperature T2 = 21 °C
DUAL TOP Operating Instructions
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3.3. Normal operation
3.3.1. Appliance is switched off
When the appliance is switched off, display shows ”Webasto Dual Top” as well as actual time, day
and date.
1 hour after switching off and touching buttons for the last time, display will go into “sleep” mode:
it will become dark. When any button is touched, display described above appears again for at least
1 hour.
3.3.2. Switching on the heater
1 Press on/off to switch on the Dual Top.
Display shows the last used heating mode.*
2 Press START
Now the heater will start running in the displayed operation mode.
Power indicator (6) lights green and “Heater ON” (7) on display.
* Exception: in case the last used heating mode was initiated by remote control (Telestart or Thermo Call), the
last non-remote control heating mode is shown.
Operating Instructions DUAL TOP
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3.3.3. Switching off the heater
If you wish to switch the Dual Top off completely:
1 Press on/off to switch off.
Now the heater will stop heating.
2 The fan can continue to run after switching off in order to cool down the heater.
“Shutting down...” on display.
3 After cooling phase the fan switches off.
For 1 hour the display shows text ”Webasto Dual Top” as well as actual time, day and
date.
Always drain the boiler if there is a risk of frost!
See paragraph 3.7.: Frost.
DUAL TOP Operating Instructions
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Stopping heating operation to select another mode:
1 Press STOP.
Now the heater will stop heating.
2 The fan can continue to run after switching off in order to cool down the heater.
Display shows stopped heating mode.*
Power indicator (6) goes off and “Heater OFF” (7) on display.
3 Use menu to select another mode.
After cooling phase the fan switches off.
When after some minutes no button is touched, the display shows text ”Webasto
Dual Top” as well as actual time, day and date.
* Exception: in case the last used heating mode was initiated by remote control (Telestart or Thermo
Call), the last non-remote control heating mode is shown.
Operating Instructions DUAL TOP
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3.3.4. Setting desired interior temperature
When the appliance is switched on (see paragraph 3.3.2) and the status display is visible, you can set
the desired interior temperature.*
The status display shows the camper and the actual heating program.
See Fig. 2.
Press to increase or to decrease the temperature.
Note:
Desired temperature is displayed, not actual interior temperature.
Selected interior temperature can be changed, no matter if heater is ON or OFF. As soon as heater is
switched on (manually, by remote control or timer) in a cabin heating mode, appliance will heat
interior to and keep it at this temperature.
* If actual heating mode is initiated by remote control, desired interior temperature cannot be adjusted. Dual Top
will heat up interior and keep the temperature at preset value, selected when setting ThermoCall or Telestart.
DUAL TOP Operating Instructions
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3.3.5. Summer mode (hot water only)
Make sure that the boiler is filled with water.
Make sure the device is switched on.
1 Press MENU.
2 Press and to select “ Hot Water”.
3 Press OK.
4 Press and and choose
“ Economy 40°C” or “ Comfort 70°C”.
5 Press OK.
6“Selection completed” on display.
Note:
When heater is already “ON”, text “Selection completed, press OK to change operation
mode” appears.
Press OK.
Operating Instructions DUAL TOP
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7 After 3 seconds power indicator (6) lights green and display changes to:
–“Heater ON”
–“ Water 40°C“ or “ Water 70°C“ (depending on selected water temperature)
–“ Diesel“
The power indicator (6) lights green as long as there is a demand for hot water. To end this press STOP.
DUAL TOP Operating Instructions
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3.3.6. Winter mode (heating without hot water production)
Make sure the device is switched on.
1 Press MENU.
2 Press and to select “ Heating Cabin”.
3 Press OK.
4“Selection completed” on display.
Note:
When heater is already “ON”, text “Selection completed, press OK to change operation
mode” appears.
Press OK.
5 After 3 seconds power indicator (6) lights green and display changes to:
Operating Instructions DUAL TOP
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–“Heater ON”
–“Cabin“, “... °C“
(value depends on latest selected interior temperature; °C or °F depends on setting)
–“ Diesel“
6 Press or to adjust desired interior temperature.
Note:
Please note that, in case the boiler has been filled, the water is automatically heated as well. The water
temperature may reach up to 80 °C depending on the power and the duration of the heating.
DUAL TOP Operating Instructions
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3.3.7. Winter mode (heating with hot water production)
Make sure the device is switched on.
1 Press MENU.
2 Press and to select “ Heating Cabin + Hot Water”.
3 Press OK.
4“Selection completed” on display.
Note:
When heater is already “ON”, text “Selection completed, press OK to change operation
mode” appears.
Press OK.
5 After 3 seconds power indicator (6) lights green and display changes to:
Operating Instructions DUAL TOP
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–“Heater ON”
–“Water 70°C”
–“Cabin“, “... °C“
(value depends on latest selected interior temperature; °C or °F depends on setting)
–“ Diesel“
6 Press or to adjust desired interior temperature.
The unit gradually reduces the power until the selected interior temperature is reached. If the
interior temperature has been reached, but the water temperature is still too low, the blown air
circulation fan switches off and the water continues to be heated to a temperature of 70 °C.
The water temperature may reach up to 80 °C depending on the heating power that is required to
achieve the interior temperature.
DUAL TOP Operating Instructions
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NO WATER control
When heating with hot water production is selected, but the boiler is without water, there will be a
warning on the display.
Text ”Mode changed Low level sanitary water!“ blinks in a pop-up display.
The device automatically changes to winter mode, heating without hot water production.
Choose one of the following options:
A. Press STOP to end current mode and select winter mode, heating without hot water production.
See paragraph 3.3.6.
B. Fill the boiler with water after changing to winter mode, heating with hot water production.
Operating Instructions DUAL TOP
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3.3.8. Heating while driving
Heating the cabin and/or water while driving the vehicle is possible and allowed.
Attention when driving in cold conditions:
Run the Dual Top in winter mode (heating with hot water production) to protect the water pipes
outside the vehicle against frost.
DUAL TOP Operating Instructions
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3.4. Settings setup
This chapter describes how to setup your favourite Dual Top system settings of day, date, time, lan-
guage, temperature unit, hour format and display contrast correctly.
3.4.1. Day, date, time
Make sure the device is switched on.
1 Press MENU.
2 Press and to select “ Setup”.
3 Press OK.
4 Press and down to choose “Set Date + Day” or “Set Time”.
5 Press OK.
6 Day and date or time (depends on selection) on display.
Active field blinks.
7 Press or to adjust value of blinking field.
8 Press OK.
9 Now, the next field blinks. Repeat steps 7 and 8 until setting is correct.
Operating Instructions DUAL TOP
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10 Press BACK to return to main menu,
or continue with another setting as described from step 4 to 9.
3.4.2. Language, temperature unit, hour format, display contrast
Choose your favourite settings:
– Language: Deutsch / English / Español / Français / Italiano / Svenska
– Temperature unit: °C / °F
– Hour format: 12h / 24h
– Display contrast: ... %
Make sure the device is switched on.
1 Press MENU.
2 Press and to select “ Setup”.
3 Press OK.
4 Press and to choose
“Set Language”,“Set Temperature Unit”, “Hour Format” or “Set Contrast”.
5 Press OK.
DUAL TOP Operating Instructions
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6 Press or to choose the desired language, temperature unit, hour format or display
contrast.
7 Press OK.
8 Press BACK to return to main menu,
or continue with another setting as described from step 4 to 7.
Operating Instructions DUAL TOP
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3.5. Programming timer
This allows you to operate the system using a 24 hour 7 day programmable timer.
Within this there are 2 programs you can set for each day, hour by hour, whether the interior has to
be heated or not (off, lower temperature, higher temperature) and if hot water (70 °C) has to be avail-
able or not.
3.5.1. Program setting
Temperature setting
Make sure the device is switched on.
1 Press MENU.
2 Press and to select “ Programming Timer”.
3 Press OK.
4 Press and to choose “ Timer Program 1” or “ Timer Program 2”
(values T1 and T2 depend on program settings).
5 Press OK.
6 Press and to select “ Set Cabin Temperatures”.
7 Press OK.
DUAL TOP Operating Instructions
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8 Press or to adjust desired T1 (lower interior temperature).
9 Press OK.
10 Press or to adjust desired T2 (higher interior temperature).
Note: T2 has to be higher than T1.
11 Press OK.
12 Press BACK to return to main menu or continue with Day setting, step 6.
Note:
Temperatures T1 and T2 may be programmed to different values in Timer Program 1 and Timer Pro-
gram 2.
Operating Instructions DUAL TOP
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Day setting
In case you want to set the days after setting temperatures T1 and T2, continue with step 6.
Make sure the device is switched on.
1 Press MENU.
2 Press and to select “ Programming Timer”.
3 Press OK.
4 Press and to choose “ Timer Program 1” or “ Timer Program 2”
(values T1 and T2 depend on program settings).
5 Press OK.
6 Press and to choose “Set Monday”, “Set Tuesday“, “Set Wednesday“, etc.
7 Press OK.
DUAL TOP Operating Instructions
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8 Press and to:
–select “Show 24h Program“.
Matrix with day, programmed hours and interior temperatures T1 and T2 appears.
Press BACK to return to main menu.
–or select “Modify 24h Program“.
9 Press OK.
Operating Instructions DUAL TOP
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10 Selected day and hour appear on display.
Matrix with programmable hours and interior temperatures T1 and T2 appears.
Field of actual time and temperature blinks.
11 Press or to adjust desired temperature for selected day and hour: OFF, T1 or T2.
12 Press OK.
13 Repeat step 11 and 12 until all 24 hours are programmed.
(You will see the hour period displayed at the bottom of the screen.)
DUAL TOP Operating Instructions
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14 “Programming 24h successful” on display.
After 3 seconds, select another day as described in step 6 and continue to program remaining
days.
It’s also possible to copy programmed values from one day to another. See Day copying, step 6.
When all days have been programmed, press BACK to return to main menu.
Operating Instructions DUAL TOP
96
Day copying
Instead of programming each day individually, it’s also possible to copy programmed values from one
day to another.
After copying you can leave the values identical, but it’s also possible to make adjustments (see Day
setting, step 6).
In case you copy days after setting temperatures T1 and T2 or programming and setting a day,
continue with step 6.
Make sure the device is switched on.
1 Press MENU.
2 Press and to select “ Programming Timer”.
3 Press OK.
4 Press and to choose “ Timer Program 1” or “ Timer Program 2”
(values T1 and T2 depend on program settings).
5 Press OK.
6 Press and to choose “Set Monday”, “Set Tuesday“, “Set Wednesday“, etc.
7 Press OK.
DUAL TOP Operating Instructions
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8 Press and to choose “Copy Tuesday“, “Copy Wednesday“, etc.
9 Press OK.
10 “Copy of 24h program succesful” on display.
After 3 seconds, select another day as described in step 6 and continue to program remaining
days.
When all days have been programmed, press BACK to return to main menu.
Operating Instructions DUAL TOP
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3.5.2. Heating by timer
This paragraph describes how to select a program to heat the interior and to provide hot water.
You can choose from 2 programs that define 7 days, 24 hours interior and water heating.
To change the programs see paragraph 3.5.1.: Program setting.
Make sure the device is switched on.
1 Press MENU.
2 Press and to select “ Heating by Timer”.
3 Press OK.
4 Press and to choose “ Timer Program 1” or “ Timer Program 2”
(values T1 and T2 depend on program settings).
5 Press OK.
6 Press and to choose “ Heating Cabin” or “ Heating Cabin + Hot Water”.
7 Press OK.
8“Selection completed” on display.
DUAL TOP Operating Instructions
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Note:
When heater is already “ON”, text “Selection completed, press OK to change operation
mode” appears.
Press OK.
9 After 3 seconds power indicator (6) lights green and display changes to:
Note:
Press and to view program settings of another day.
–“Heater ON” or “Heater OFF”
–“Water” (if Hot Water selected)
–“Cabin”
–“ Diesel“
–Day
–Time
– Matrix with programmed hours and inte-
rior temperatures.
Field of actual time and temperature
blinks.
Operating Instructions DUAL TOP
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3.6. Remote control
The Webasto Dual Top heater can also be operated by following remote control devices: Webasto
Telestart and Thermo Call.
These controls are optional. In case of interest please contact your Webasto dealer.
Signal of remote control over-rules commands of Control Panel, as long as remote control is enabled.
3.6.1. Show actual mode
Make sure the device is switched on.
1 Press MENU.
2 Press and to select “ Setting ThermoCall/Telestart”.
3 Press OK.
4 Press and to select “Show actual Mode”.
5 Press OK.
DUAL TOP Operating Instructions
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6 On display appears following message, depending on disabled or enabled remote control
function:
– Disabled: “ThermoCall/Telestart disabled”
– Enabled: “ThermoCall/Telestart enabled Receiving a signal from ThermoCall/
Telestart system heats up cabin to ... °C and provides hot water”.
Note:
... °C or ... °F: value and unit depend on setting and set interior temperature.
Note:
“and provides hot water” only appears when function “Heating Cabin + Hot Water” is selected.
7 Press BACK to return to the main menu.
Operating Instructions DUAL TOP
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3.6.2. Enabling and setting Telestart and Thermo Call
Make sure the device is switched on.
1 Press MENU.
2 Press and to select “ Setting ThermoCall/Telestart”.
3 Press OK.
4 Press and to select “ThermoCall/Telestart enabling and setting”.
Note:
If text “ThermoCall/Telestart not connected Visit www.webasto-dualtop.com” appears,
remote control device is not connected.
Press BACK to return to main menu.
5 Press OK.
6 Press and to choose “Heating Cabin” or “Heating Cabin + Hot Water”.
7 Press OK.
8 Press and to adjust desired interior temperature.
9 Press OK.
DUAL TOP Operating Instructions
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10 “Enabling ThermoCall / Telestart successful” on display.
After 3 seconds display changes to status of appliance at actual time.
“ “ (8) on display.
Operating Instructions DUAL TOP
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3.6.3. Disabling Telestart and Thermo Call
Make sure the device is switched on.
1 Press MENU.
2 Press and to select “ Setting ThermoCall/Telestart”.
3 Press OK.
4 Press and to select “ThermoCall/Telestart disabling”.
5 Press OK.
6“Disabling ThermoCall / Telestart” on display.
After 3 seconds display changes to status of appliance at actual time.
“ “ (8) disappears from display.
DUAL TOP Operating Instructions
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3.6.4. Start and stop heater operation using Telestart
This is only possible when Telestart is connected and enabled, indicated by “ “ (8) in display.
Starting heater operation:
1 Press ON button of Telestart.
LED of Telestart lights green, showing that signal was transferred successfully.
2 The heater starts running in the (in paragraph 3.6.2.: Enabling and setting Telestart and
Thermo Call) selected mode, independent from the actual heater status (heater off, heat-
er on, drainage, ...).
Stopping heating operation:
1 Press OFF button of Telestart.
LED of Telestart lights red, showing that signal was transferred successfully.
2 The heater stops any heating operation and switches off, independent from the actual
heater status.
Exception: running drainage will be continued.
Note:
If LED of Telestart blinks red after pressing ON or OFF button of Telestart, the signal was not trans-
ferred successfully.
Operating Instructions DUAL TOP
106
3.7. Frost
There are several features that protect the water system against frost.
• Drain water contents manually when there is risk of frost and when storing the vehicle for a longer
period.
See paragraph 3.7.1.: Draining the boiler manually.
• The boiler is drained automatically in case you forgot to drain manually.
See paragraph 3.7.3.: Draining the boiler automatically.
• In case you don’t want to drain the water system and you don’t heat the interior of the vehicle,
you can select the frost protection mode.
See paragraph 3.7.4.: Frost protection mode.
DUAL TOP Operating Instructions
107
3.7.1. Draining the boiler manually
Drain water contents manually when there is risk of frost and when storing the vehicle for a longer
period.
1 Interrupt power for vehicle system water pump (main switch or pump switch, depending on
instructions of the vehicle manufacturer).
2 Open hot water taps in kitchen, bathroom, shower, etc.
3 Make sure the device is switched on.
4 Press MENU.
5 Press and to select “ Draining Boiler”.
6 Press OK.
7“Press OK to confirm boiler drainage” on display.
8 Press OK.
Operating Instructions DUAL TOP
108
9“Draining... Press MENU to select heating operation” and
“Press STOP to abort drainage” on display.
“ ” (9) on display.
Note:
Any kind of heater operation will be stopped when manually starting boiler drainage.
Note:
To stop drainage see paragraph 3.7.2.: How to stop draining the boiler.
The water heater content is now discharged to the outside through the drainage valve.
Place a container beneath the outlet to check whether the water in the boiler has completely
drained away (approx. 10 litres!).
After approx. 90 min, text “Drainage completed” appears.
10 Press OK to end manual drainage.
Note:
Any kind of water from the vehicle has to be discharged at a proper disposal facility.
DUAL TOP Operating Instructions
109
Note:
Be aware of drainage behaviour when starting a heating operation (by menu guidance) without
aborting or completing drainage procedure:
a) Drainage aborted when one of the following modes is selected:
- Summer mode (hot water only)
- Winter mode (heating with hot water production)
- Frost protection mode;
b) Drainage continued in case of
- Winter mode (heating without hot water production).
Operating Instructions DUAL TOP
110
3.7.2. How to stop draining the boiler
Boiler drainage can be stopped, if circumstances require this.
Make sure the device is switched on.
1 Press MENU.
2 Press and to select “ Draining Boiler”.
3 Press OK.
4“Press OK to confirm boiler drainage” on display.
5 Press OK.
6“Draining... Press MENU to select heating operation” and
“Press STOP to abort drainage” on display.
“ ” (9) on display.
7 Press STOP.
“Drainage aborted” on display.
8 Press OK.
DUAL TOP Operating Instructions
111
3.7.3. Draining the boiler automatically
The drainage valve is opened electrically.
If the water temperature at the drainage valve is less than 6 °C, the boiler water contents may
discharge automatically.
This function is active when:
• the appliance is switched "OFF";
• in winter mode (heating without hot water production) during a period when there is no heating
action in the heater (e.g.: selected interior temperature is reached, low outside temperature);
• if battery power is too low;
• there is a failure!
Note that it only works when a 12 V power supply is available!
During drainage, “ ” (9) appears on display.
After approx. 90 min, the electrical drainage valve will be closed again.
The drainage outlet of the electrical drainage valve must always be kept clear (free from dirt, ice,
leaves etc.)!
Operating Instructions DUAL TOP
112
To avoid water loss and to protect the heater and boiler against frost, select the frost protection mode
(see paragraph 3.7.4.: Frost protection mode).
Note:
Automatic drainage can not be stopped.
However, when you switch mode to manual drainage, it can be aborted (see paragraph 3.7.2.: How
to stop draining the boiler).
Note:
Draining the boiler as well as the frost protection mode protect the heater and boiler against frost.
Not all water lines in the vehicle can be protected against freezing due to installation variations.
When storing the vehicle, either choose a place that is well protected against low temperatures or
drain the whole water system, including all lines and tubes.
There shall be no warranty claims for damage caused by frost!
DUAL TOP Operating Instructions
113
3.7.4. Frost protection mode
This mode is a safety feature for the heater only. It does not prevent the water circuits inside and
outside the vehicle from freezing.
Store the vehicle at a place that is well protected against frost or drain water contents if there is a risk
of frost!
Make sure the device is switched on.
1 Press MENU.
2 Press and to select “Frost Protection”.
3 Press OK.
4“Selection completed” on display.
Note:
When heater is already “ON”, “Selection completed, press OK to change operation mode”
appears.
Press OK.
Operating Instructions DUAL TOP
114
5 After 3 seconds power indicator (6) lights green and display changes to:
–“Heater ON”
–“Frost Protection Boiler”
–“ Diesel“
The heater works in the same way as in winter mode: heating with hot water production, but with
lower values for air and water temperatures.
Note:
When the frost protection mode is selected, diesel is used. Make sure that the battery is charged and
that there's enough diesel in the tank. Check this frequently.
Note:
Make sure that the boiler is filled with water when choosing frost protection mode.
DUAL TOP Fault message
115
4 Fault message
When a fault occurs, power indicator / fault indicator (6) blinks RED.
Next to that, a fault message is shown on the display of the Control Panel.
The meaning of the messages is shown in the following table.
Depending on the type of fault, you may need to visit a Webasto service station.
If serious malfunctions such as overheating or failure start to reoccur, the heater is locked and can be
put back into service by deleting the failures.
Do this by disconnecting the power supply:
1 Ensure that the heater/ventilator is not running (to be established by the sound of the heater op-
erating).
If necessary wait until ventilators stop running.
2 Switch off Dual Top by pressing on/off button .
3 Replace fuse 15 A for at least 5 seconds.
Now the heater is reset.
Fault message DUAL TOP
116
Note:
Please be aware that fault messages (numbers) are not the same on different types of Control Panels.
Fault message on Control Panel
Message Meaning Remedy
Message 01
No data connection
No communication between Control Panel
and heater, or error Control Panel.
First, remove fuses 15A and 5A. Then
put in fuse 15A, followed by fuse 5A.
Check connections of Control Panel.
Check fuse 15A.
Contact a Webasto service station
Message 02
No start of combustion
No start (after 2 attempts to start) Check fuel supply (enough fuel, at least
8 ltr.), reset heater
(by pressing OK or switching off for at
least 30 sec.)
Message 03
Combustion interrupted
Flame failure.
Restart not successful
See message 02.
Message 04
High battery voltage
Operation voltage is above permitted value Reset heater (by pressing OK or
switching off for at least 5 sec.)
Message 05
Low battery voltage
Operation voltage is below permitted value Charge battery, reset heater (by pressing
OK or switching off for at least 5 sec.)
DUAL TOP Fault message
117
Message 06
Fuel pump disconnected
or system overheated
Fuel pump disconnection / one of the three
overheating switches detects too high
temperature
Check fuel pump cable and connectors,
check for overheating (see messages
10, 11, 12, 13 and 14), reset heater (by
pressing OK or switching off for at least
5 sec.)
Message 07
Fuel pump short circuit
Fuel pump short circuit to ground Check fuel pump cable and connectors
Message 08
Failure heating air
ventilator
Hot air motor fault: disconnection / short
circuit / fan speed out of range / fan blocked
Ensure that hot interior air fan can
rotate freely, remove possible blocking
objects, reset heater (by pressing OK or
switching off for at least 5 sec.)
Message 09
Failure ventilator
amplifier
No communication between amplifier of
heating air ventilator and heaters control unit
Contact a Webasto service station
Message 10
High temperature
sanitary water
Overheating water temperature sensor Check water level, reset heater (by
pressing OK or switching off for at least
5 sec.) or select winter mode without
hot water production
Fault message on Control Panel
Message Meaning Remedy
Fault message DUAL TOP
118
Message 11
High temperature
sanitary water
Exceeding gradient water temperature sensor Check water level, reset heater (by
pressing OK or switching off for at least
5 sec.) or select winter mode without
hot water production
Message 12
High temperature
heating air
Overheating hot air temperature sensor Ensure that hot air can flow freely, air
intake and outlets are not blocked.
Reset heater
(by pressing OK or switching off for at
least 5 sec.)
Message 13
High temperature
heating air
Exceeding gradient hot air temperature sensor Ensure that hot air can flow freely, air
intake and outlets are not blocked.
Reset heater
(by pressing OK or switching off for at
least 5 sec.)
Message 14
Failure cooling air
ventilation
Overheating of heaters' control unit Ensure that cooling air can flow freely,
reset heater (by pressing OK or
switching off for at least 5 sec.)
Message 15
Failure combustion air
motor
Combustion air motor interrupted Ensure that cooling fan can freely
rotate,
remove possible blocking objects.
Check fuse 15 A.
Fault message on Control Panel
Message Meaning Remedy
DUAL TOP Fault message
119
Message 16
Failure combustion air
motor
Combustion air motor fault:
disconnection / short circuit / overload /
blocked
See message 15.
Message 17
Failure control unit
Control unit (heater) fault / heater locked Put heater back into service (see above
this table) and restart heater.
Contact a Webasto service station
Message 18
Failure cabin
temperature sensor
Interior temperature sensor
disconnection / short circuit
Check routing of cable, avoid that it is
pinched or crushed, check the
connector behind the control panel.
Reset heater (by pressing OK or
switching off for at least 5 sec.)
Message 19 n/a n/a
Message 20
Failure heating air
temperature sensor
Hot air temperature sensor disconnection Reset heater (by pressing OK or
switching off for at least 5 sec.)
Contact a Webasto service station.
Message 21
Failure heating air
temperature sensor
Hot air temperature sensor short circuit See message 20.
Message 22
Failure sanitary water
temperature sensor
Water temperature sensor disconnection See message 20.
Fault message on Control Panel
Message Meaning Remedy
Fault message DUAL TOP
120
Message 23
Failure sanitary water
temperature sensor
Water temperature sensor short circuit See message 20.
Message 24
Failure glow plug
Glow plug / flame detector disconnection See message 20.
Message 25
Failure glow plug
Glow plug / flame detector short circuit See message 20.
Message 26
Failure flame detection
Early flame detection See message 20.
Message 27
Failure relay box
n/a n/a
Message 28
Failure drain valve
Electrical drainage valve disconnection See message 20.
Message 29
Failure drain valve
Electrical drainage valve short circuit See message 20.
Message 30, 31, 32, 33 n/a n/a
Fault message on Control Panel
Message Meaning Remedy
DUAL TOP Fault message
121
Note:
n/a = not available
Note:
All messages except message 28 and 29: heater shuts off automatically.
Failure of drainage valve (message 28 and 29) will not abort heater operation and will not be shown
during heater operation.
Message 34
System overheated or
relay circuit disconnected
One of the three overheating switches detects
too high temperatures
Check for overheating (see messages
10, 11, 12, 13 and 14).
Reset heater (by pressing OK or
switching off for at least 5 sec.)
Contact a Webasto service station.
Fault message on Control Panel
Message Meaning Remedy
Fault message DUAL TOP
122
4.1. Fuses
The Dual Top is equipped with 3 fuses: 5 A, 10 A and 15 A.
Each fuse shall be connected to the correct cable (color).
5 A: red / blue cable
10 A: red / black cable
15 A: red cable
When you replace a fuse, make sure that the Dual Top is switched off.
WARNING
In case of electrical deviations a fuse other than specified may cause fire.
DUAL TOP Worldwide warranty
123
5 Worldwide warranty
The following worldwide warranty is extended to cover Webasto Dual Top integrated air and water
heater, manufactured or supplied by Webasto and is subject to qualifications indicated. Webasto
warrants for the period set forth below that products be free from defects in workmanship and
material, provided such products are installed, operated, and maintained in accordance with Webasto
Dual Top written instructions. The warranty is for the end-customer whereby it is administered and
processed inside the Webasto network of authorized dealers.
Terms and conditions
1 Please note that the Dual Top is only specified for applications in motor homes or similar vehicles.
2 The quality and good operation of Webasto Dual Top products are guaranteed by Webasto for a
period of two (2) years, starting from the date of installation. OE installed equipment warranties
begin with the purchase of the (recreational) vehicle, not from the date of installation.
… 67 …


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