Webasto SmarTemp Control fx User manual

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SmarTemp Control fx
Digital Timer Interface
Installation / Operation Instructions
General
Thank you for choosing Webasto to meet your heating needs. The Webasto SmarTemp Control fx enables you to
preset start-up cycles of your Webasto heater 7 days a week with 4 individual times each day.
Operation
The Webasto SmarTemp Control fx is controlled using a rotary dial around the outside of the unit to browse through
different menu options. Simply click the selection button ( ) to make your choice. The following sections will define
each menu item and its default setting.
Compatibility
All Coolant Heaters. The SmarTemp Control fx has an output of 1A for the heaters ON/OFF signal. Heaters requiring a
higher amperage signal will require a relay to accommodate different specifications. See electrical connections for
details.
Note: Relay not included.
Mounting Procedure
1. Find a suitable mounting location (on a flat surface if possible) in a visible area. Note: Always install in an area
protected from the effects of weather and contamination.
2. Use the drilling dimensions to lightly mark the two mounting holes.
3. (Optional Step) To route wire harness through the mounting surface,
drill a 17mm hole as notated on the drilling dimensions image.
NOTE: Always make sure there are no obstacles behind the mounting
location prior to drilling.
4. Secure the Webasto SmarTemp Control fx using the two supplied #4
screws.
5. Apply the supplied “Heater Off” warning sticker in a highly visible
location to the drivers area. Refer to the example sticker below.

SmarTemp Control fx Installation – Operation Instructions
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6. Observe the Menu Descriptions section for proper menu setup.
Electrical Connections
SmarTemp Connector Pin-out
Pin Number
Description
Wire Color
1
+12 / 24V
Red
2
GND
Brown
3
Heater Output
Black or Gray
4 *Diagnostic Blink Code Green
For terminal removal use: Molex terminal removal tool
P/N: 11-03-0044 (http://www.molex.com)
*Diagnostic Blink Code functionality does not apply to most coolant heaters. Refer to the Error Code section for additional
information.
Relay Connection: (If applicable)
Heaters requiring a higher amperage ON/OFF signal will require a relay to accommodate different specifications.
If the connected heater requires more than a 1A ON/OFF signal to start, use the pin-out of a standard relay as described
below.
Relay Output
Relay Pin 30
Battery (B+) power source (Fused according to required heater amperage)
Relay Pin 85 Ground
Relay Pin 86
Heater ON/OFF signal wire from pin 3 of SmarTemp Control fx harness.
Relay Pin 87
Switched ON/OFF signal to heater.
Component Description
(Webasto) ON/Off Button
Rotary Knob
LCD Screen
Screw Cap
Status Indicator Light(s)
Selection Button
*Micro USB Service Port
*The micro USB service port is not used for Webasto heater diagnostic purposes on SmarTemp Control fx.
TERMINAL INSERT
SIDE OF CONNECTOR

SmarTemp Control fx Installation – Operation Instructions
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LCD Screen Legend
Standby Mode Standby (Auto)
Day and Time
Auto Mode
(Timers Enabled)
Standby (Manual)
Day and Time
Manual Mode
Auto Mode
Timer Active
Auto Mode
Runtime Duration Remaining
Current Day
Current Time
Heater ON
Manual Mode
Manual Operation Mode
Runtime Duration Remaining
Current Day
Current Time
Heater ON
Menu Descriptions
Definitions Default
Time & Date Time & Date allows user to properly set the current date and time. User also
has the ability to switch between AM/PM and 24 hour format. If the 24 hour
format is selected the date format will change to dd/mm/yyyy.
AM/PM
mm/dd/yyyy
Mode Two modes are possible:
–Auto mode enables the pre-defined timer programs. Standard ON/OFF
functionality is still possible while in this mode.
–Manual Mode allows the heater to be operated via the Webasto button
on the SmarTemp Control fx. While in Manual Mode, all Auto Mode
functionality is indefinitely disabled.
Note: While in manual mode the heater will continue to operate based on
the pre-defined “Duration” set by the user. See “Duration” for further
detail.
Manual
Language Language changes between English, Spanish, and French. English
Duration Duration allows user to select heater runtime of the heater. Set range is
between 10 – 120 minutes selectable by 10 minute increments.
While using Manual Mode, the “Duration” setting will be used for the
runtime of the heater when the Webasto button is pressed.
Note: Setting the Duration run-time (in the Duration section) before setting
a timer program will default all new programs to the user defined duration
time.
60 minutes

SmarTemp Control fx Installation – Operation Instructions
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Timer There are 4 heater start-up cycles possible 7 days per week. Select the day or
the specific timer (T1 – T4) using the rotary knob and the selection button.
Once the day, time, and duration have been entered, press the selection
button to set. A checkmark will confirm the timer has been saved. To turn
the timer OFF, select the timer checkmark and dial the duration down to the
OFF position and click the selection button.
Calendar
Fields Empty
Skip The Skip feature looks similar to timer programming; however when a
specific timer program is selected, it will update the checkmark to an “s” for
skipped. When a program has been skipped, it will disable that specific timer
program for one cycle (7 day period). Preset timer programming will
reactivate after this one-time skip cycle.
Note: To permanently turn a timer OFF, refer to the “Timer” section.
Calendar
Fields Empty
LVD LVD “Low Voltage Disconnect” allows the user to adjust the battery voltage
level at which the Webasto SmarTemp Control fx will shut down heater
functionality.
If battery voltage is equal to or less than the threshold selected +0.1v, the
heater will not start. i.e. if an 11.5v threshold is selected the heater cannot
be started until B+ has reached 11.7v.
12 volt -Range between 11v – 12.5v
24 volt -Range between 21v – 25.5v
11.4v
24.2v
Error Codes This section will log the last 5 error codes and the date that it was set.
Highlight and select an error code for a full description.
If the heater produces an error code, the status indicator lights will flash red
and the error will display on the main screen. Error codes cannot be reset
through the Webasto SmarTemp Control fx. Refer to the heater service
manual for resetting an error code.
Note: Error code functionality does not apply to most coolant heaters.
Codes on products with no blink code functionality can still be obtained
using the PC Diagnostics test tool. Refer to the applicable service manual by
visiting www.techwebasto.com for detailed PC diagnostics information.
No Errors
Hour Meter The hour meter logs the operating hours of an active ON signal to the
heater. This does not reflect the true runtime of the heater itself.
Note: For warranty purposes a diagnostic printout is still required where
applicable. This hour meter is for reference only!
N/A
Default Default allows the user to perform a factory reset of the control settings and
saved timer program data.
N/A
SW Version This displays the firmware version of the Webasto SmarTemp Control fx. Installed Version
Back Select this to return to the previous screen. N/A

SmarTemp Control fx Installation – Operation Instructions
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Technical Information
- Rated Voltage: 12 / 24V
- Operating Voltage Range: 12V: 11 – 16V | 24V: 21 - 32V
- Low Voltage Disconnect Range: 12V: 11 – 12.5V | 24V: 21 – 25.5V
- Operating Temperature: - 40° ... +185 °F (- 40° ... +85 °C)
- Installation Dimensions: (L x H x D) 2.7” x 2.2” x .60” (69.4mm x 55.5mm x 15.2mm)
Use this drawing for dimensional
reference only! This is NOT a Template!
For a Spanish version of this document, scan this QR Code.

Webasto Thermo & Comfort N.A., Inc.
15083 North Road
Fenton, MI 48430 USA
Phone:
Fax:
Email:
Internet:
810-593-6000
810-593-6001
info-[email protected]om
http://www.webasto.us
http://www.techwebasto.com
Org. 9/2014 Rev. 08/2018 Ver. 1.1