11
Troubleshooting Guide
Problem
Solution
The display shows *** after measurement
Oxygen level is out of range, You cannot
measure oxygen in fresh air (21%).
The PWR light does not come on after switching
on
Does the display show the main screen?
Yes: The LED light may be broken
No: Recharge the battery
The display shows BATT or is black after
switching on.
Recharge the battery and turn on.
Did you disconnect your device properly from the
Computer the last time?
Yes: The battery might be discharged.
No/ I don’t know: Please contact
CO2Meter
.
The TecPen is connected to the power supply but
the BT light does not light up.
The BT light does not light up during charging if
the device is turned off.
The TecPen is connected to a PC via USB but
the PC cannot find it as a drive.
You must turn the TecPen on before connecting it
to a PC.
If the device is switched on but you still cannot
find it, check you have an available USB COM
port.
The measured Oxygen value is not saved.
Did you press the LOG button?
Did you observe LOG on the display?
If yes for both, please contact us.
The log file shows an incorrect date or time
Check in the menu to see if the date and time are
correct. Set the correct date and time.
The measured value varies between 2
measurements
If the temperature has changed, verify the
TecPen has time to acclimatize.
The TecPen is not measuring anything
Please refer to the startup procedure.
Can you hear the pump? If not, contact us.
Is the display showing ****? The gas level is out
of range.
Is the display showing MEAS? Check screen 4. If
the amplitude value is greater than 0 contact us.
