Techno Line WL 1030 Manuel D'utilisation page 18

press and hold the "CALIBRATE" button (C2) until "CAL" flashes on the
display.
2) In around 20 minutes, the blinking will stop and the initial calibration is
completed. Your CO2 monitor will return to normal display mode and will
continue the calibration in the background. It takes 24 hours to let your
monitor run and display the correct CO2 level.
Note: Please wait for your CO2 monitor to complete the calibration process
by itself. Do not press the "CALIBRATE" button (C2) or any other button
during the process.
Temperature
In normal display mode, press the "°C/°F" button (C6) to switch between
temperature display in °C or °F.
To adjust the display brightness
Press the "DIMMER" button (C1) to adjust the brightness of the display from
High to Low to Off.
Troubleshooting
No display or functions
Check the AC/DC adaptor is properly connected.
Response time
Ensure the air flow channels at the back of the monitor are not blocked or
covered.
CO2 reading shows "Err"
The CO2 sensor is not working properly. Unplug the AC/DC adapter (C8)
for 10 seconds to insert it to your monitor again.
Care and maintenance
1. Place your monitor on a stable surface, away from sources of direct
sunlight or excessive heat or moisture.
EN7