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Troubleshooting Guide
Problem
The display shows *** after measurement
The PWR light does not come on after switching
on
The display shows BATT or is black after
switching on.
The TecPen is connected to the power supply but
the BlueTooth light does not light up.
The TecPen is connected to a PC via USB but
the PC cannot find it as a drive.
The measured Oxygen value is not saved.
The log file shows an incorrect date or time
The measured value varies between 2
measurements
The TecPen is not measuring
Solution
Oxygen level is out of range 0-5%
Does the display show the main screen?
Yes: The LED light may be broken
No: Recharge the battery
Recharge the battery and turn on.
The BlueTooth light does not light up during
charging.
You must turn the TecPen on before connecting it
to a PC.
Did you press the LOG button?
Did you observe LOG on the display?
If yes for both, please contact us.
Check screen 3 to see if the date and time are
correct. If not set the correct date and time.
If the temperature has changed, verify the
TecPen has time to acclimatize.
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.
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