Instructions

2120
AIR CO
2
NTROL UP – CO
2
Monitor

7. Traffic light display
• The CO
2
monitor shows the CO
2
comfort level with an extended traffic
light display:
8. CO
2
upper limit
• Press briefly the CO
2
SET button in normal mode. and 2000 ppm
(default) or the last adjusted upper CO
2
limit appear on the display. After
3 seconds, the device automatically returns to the normal mode.
• Press and hold the CO
2
SET button for 2 seconds to enter the setting
mode. The value flashes.
• Press the DOWN/CALIBRATE or UP/°C/°F button to set the desired upper
limit in steps of 10ppm, while the value flashes.
• Press and hold the DOWN/CALIBRATE or UP/°C/°F button in setting mode
for fast mode.
• Confirm the setting with the CO
2
SET button.
• The device will automatically quit the setting mode if no button is pressed
for 20 seconds. The setting is saved.
• Press the CO
2
ALARM button in normal mode, to activate or deactivate the
alarm function for the upper CO
2
limit. appears on the display when
the alarm is activated.
• If the measured CO
2
value is above the upper limit setting, an alarm
sounds and the CO
2
alarm symbol flashes. Press any button to stop the
alarm sound. The CO
2
alarm symbol will continue flashing until the mea-
sured CO
2
value is below the set alarm limit.
9. CO
2
, temperature and humidity maximum and minimum values
• Press the MEM button in normal mode.
• You can now read the highest measured values for CO
2
, temperature and
humidity of the last 24 hours (display MAX).
AIR CO
2
NTROL UP – CO
2
Monitor

• Press the MEM button again.
• The minimum values measured since the last 24 hours appear on the dis-
play (display MIN.
• Press the MEM button again to return to normal mode. The device will
automatically quit the MAX/MIN mode if no button is pressed for 3 se-
conds.
• Press and hold the MEM button for 2 seconds during the highest or low-
est values are displayed. The values will be deleted (display ----) and reset
to the current state.
10. CO
2
manual calibration function
• For the whole calibration process, place the device outdoors. Choose a
shady and dry place. Wait 15 minutes, the device must adapt to the envi-
ronment.
• Use a pin to press the RESET button at the bottom. Wait until the normal
display appears (see point 6. “Operation”).
• Then press and hold the DOWN/CALIBRATE button for 2 seconds to enter
the manual calibration mode. The CAL symbol flashes.
• Wait approx. 20 minutes, until the normal display with a CO
2
concentra-
tion of 400 ppm (fresh air) appears. The calibration is completed and the
device returns to normal state. Now you can use the device again as usual.
• During the manual calibration operation, press the DOWN/CALIBRATE but-
ton to exit the calibration mode.
11. Care and maintenance
• Clean the device with a soft damp cloth. Do not use solvents or scouring
agents.
• Turn off the device if you do not use it. Press the POWER/LIGHT sensor
button for 3 seconds.
• Store the device in a dry place.
12. Troubleshooting
Problem Solution
No display on the device ➜ Press the POWER/LIGHT button for
3 seconds to switch on the device
➜ Set the brightness with the POWER/LIGHT
button
CO
2
value (ppm) Description
400-600 GOOD
601-1000 NORMAL
1001-1500 POOR
1501-2000 SERIOUS
2000 SERIOUS + ➡
TFA_No. 31.5010_Anleit_02_22 22.02.2022 13:57 Uhr Seite 11