Open window detection

  1. Hold the + button to switch the heater into standby mode. The display shows OFF.
  2. Simultaneously press the Timer button and + button for 3 seconds to activate the Open window detection system. The display will show OPE for 3 seconds.
  3. When the ambient temperature decreases 5°C or more within 15 minutes, the device will go in standby mode and the display will show OPE for 30 minutes. In standby mode, if the heater is not operated, the display will turn off after 10 seconds.
  4. Press any button to wake up the display and press any button again to switch on the heater. If the heater is not operated for 30 minutes, the heater will switch back to working with the setting that was active before Open window detection was activated.
  5. Hold the + button to switch the heater into standby mode. The display shows OFF.
  6. Simultaneously press the Timer button and + button for 3 seconds to deactivate the Open window detection system. OPE will flash on the display for 3 seconds.