Heating programming
You must program your departure time so that the system automatically calculates the optimum time to start the heater.

Programming the departure time
Press buttons 1 to display the programming time.
This symbol appears.
After displaying the programming time, press buttons 4 and 5 simultaneously within 10 seconds.
This symbol flashes.
Set the time by pressing buttons 1, then press buttons 4 and 5 simultaneously to save it.
This symbol appears (steady).
Activation - deactivation
After displaying the programming time using buttons 1, press button 5 (ON) until the message “OK” appears.
When the signal has been received, the message
“OK” appears along with the “HTM” symbol.
This symbol appears when the
heater starts.
HTM: Heat Thermo Management.
To deactivate the programming, press button 4 (OFF) until the message “OK” appears.
The “HTM” symbol goes out.
During these operations, if the message “FAIL” appears, the signal has not been received. Repeat the procedure after changing location. Stopping the heater
Press key 5 (ON).
The “HTM” symbol stays on.
Changing the heating level
The system offers 5 heating levels (C1 the lowest level to C5 the highest level).
After displaying the heating level using buttons 1, press buttons 4 and 5 simultaneously.
The letter “C” flashes.
Set the heating level by pressing keys 1 .
Press buttons 4 and 5 simultaneously to save the selected level. The letter “C” appears (steady).
The factory presets are replaced by the new entries. The programmed times are stored until the next change. When the departure time is activated, it is not possible to change the heating level. The departure time must be deactivated first. Replacing the batteryThe remote control is powered by a supplied 6V-28L battery.
A message on the screen indicates that this battery must be replaced.
Unclip the case, then replace the battery.
The remote control must then be reset, see below.
! Do not dispose of used batteries. Take them to an approved collection point. Resetting the remote controlIf the battery is disconnected or the battery in the remote control is replaced, the remote control must be reset.
After switching on, within 5 seconds, press key 4 (OFF) for 1 second.
If the operation was successful, the message “OK” appears on the remote control screen.
In case of a fault, the message “FAIL” appears. Repeat the operation.
As an accessory, an adaptation of your programmable heater allows it to be used to preheat the passenger compartment of your vehicle.
The motion sensor of the volumetric alarm may be disturbed by the airflow of the programmable heater when it is operating. To avoid any unintended alarm activation when using the programmable heater, it is advised to deactivate the volumetric protection.

Always switch off the programmable heater while refuelling to avoid any risk of fire or explosion.
To avoid the risk of poisoning and asphyxiation, the programmable heater must not be used, even for short periods, in enclosed spaces such as garages or workshops that are not equipped with an exhaust gas extraction system.
Do not park the vehicle on a flammable surface (dry grass, dead leaves, paper, etc.); there is a risk of fire.
The programmable heating system is supplied from the vehicle's fuel tank.
Before use, make sure there is enough fuel remaining. If the fuel tank is on reserve, we strongly recommend not programming the heater.Test yourself
A quick Citroen C5 quiz: every answer comes with an explanation and a link to the manual page.