12
Troubleshooting
Guide
Symptom
/
Issue
Possible
Cause
Resolution
Meter is not
recognized by
computer
No power.
Replace/recharge the batteries or connect meter to the included
power supply and power meter ON.
Meter is not
recognized by
computer
Unable to find
correct COM
port for USB.
Read this App note on reassigning COM ports for USB:
http://www.co2meters.com/Documentation/AppNotes/AN134‐
Change‐COM‐Ports.pdf
All log time stamps
start in the year
2000
The real‐time
clock was not
synced.
Connect the meter to the computer with data logging off. The
time will synchronize in GasLab®.
No logs are present
on the meter after
data logging
Meter was
disconnected
while logs were
being
downloaded.
Connect the meter to the computer and download logs again.
Meter voltage
dropped below
5V.
Use “Recover Logs” function in Gaslab.
The display is Blue
or shows Sensor
Missing
The meter’s
EEPROM is
corrupted, or
battery/power
supply issues.
Email technical support for further assistance.
CO2 Readings are
inaccurate
ABC is adjusting
the zero point.
Turn off ABC in software or ensure the unit is exposed to
400ppm air while data logging.
Batteries are
low.
Replace/recharge batteries.
The meter was
disturbed
mechanically.
Meter may need
calibration.
Perform a calibration or send to CO2Meter for professional
calibration and recertification.
