Auxiliary Cabin Heater Timer: Service and Repair

WM 821015 Setting the timer for the auxiliary heater

Switching the auxiliary heater on and off

DANGER

Danger of fire.

-> Do not operate the auxiliary heater in enclosed spaces.
-> Before filling up the vehicle, turn off the auxiliary heater.

Information

- The auxiliary heater is ready for operation even with the ignition switched off.

- The auxiliary heater will operate for 30 minutes. This cannot be changed.

Information

- The combustion chamber of the auxiliary heater is cleaned after it is switched off. Given this, wait at least 2 minutes before switching the auxiliary heater on again using the ON/OFF button.





Overview of timer for auxiliary heater





1. Switch auxiliary heater on. To do this, press the ON/OFF button -8-.
2. Switch auxiliary heater off. To do this, press the ON/OFF button -8- again.

Setting the timer for the auxiliary heater

Adjusting the heat/ventilation function





Overview of timer for auxiliary heater





1. Switch off the ignition.
2. Activate the change heat/ventilation function. To do this, press the TIMER button -7-.
3. Adjust the auxiliary heater. To do this, press the + button -9- and wait 10 seconds until the two symbols Auxiliary heater -5- and Auxiliary ventilation -1- have stopped flashing. The auxiliary heater function is activated the next time the ON/OFF button -8- is pressed.
4. Adjust the auxiliary ventilation. To do this, press the - button -9- and wait 10 seconds until the two symbols Auxiliary heater -5- and Auxiliary ventilation -1- have stopped flashing. The auxiliary ventilation function is activated the next time the ON/OFF button -8- is pressed.

Adjusting the ON times

Information

- The auxiliary heater has 3 independent memory locations. Thus 3 different ON times can be programmed for auxiliary heating or auxiliary ventilation.

- But only one memory location can be activated.

- The time at which heating or ventilation begins can be pre-set precisely to any time from one minute up to 24 hours.

- The pre-selected ON time only remains effective for 24 hours.





Overview of timer for auxiliary heater





1. Switch off the ignition.
2. Adjust operation of the auxiliary heating/ventilation. => Adjusting operation of heating/ventilation
3. Select a memory location. To do this, press the memory location TIMER button -7- within 10 seconds after adjusting auxiliary heating/ventilation.
4. Adjust the ON times. To do this, adjust the ON time using the + and - buttons. Pressing the buttons will adjust the ON time by minutes. Holding down the button adjusts the time faster.
5. Save the ON time. To do this, press the ON/OFF button. The programmed ON time is displayed for approx. 2 minutes in the display.
6. Program additional ON times. To do this, repeat steps 1 - 5.