User's Manual

9 Tips and assistance
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9 Tips and assistance
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9.1. Questions and answers
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Question Possible causes/solution
Rechargeable battery low > Switch to mains operation.
Measuring instrument
switches off automatically
or cannot be switched on
Rechargeable battery has run out:
> Charge rechargeable batteries or
switch to mains operation.
Displayed battery capacity
seems to be faulty
Rechargeable battery was repeatedly
not fully discharged/charged:
> Discharge rechargeable battery
(until measuring instrument
switches off automatically) and
then charge fully.
Error message: Main
pump flow is too high
Gas outlet blocked:
> Make sure that the gas outlet is
clear.
Overpressure in flue gas duct too high
(> 50 mbar):
> Perform draught measurement.
Error message: Sensor
protection is active
The switch-off threshold of the CO
sensor was exceeded:
> Remove probe from flue gas duct.
Error message: Printing
not possible
> Switch on printer.
> Move printer into wireless range.
Three acoustic signals
after switching on the
measuring instrument
Device error:
> Consult Testo Service or your
dealer.
App no longer responds to
command inputs
> Open the overview of active
applications (refer to your
smartphone operating system
instructions) and close the App.
Instrument no longer
responds to command
inputs
> Keep the button pressed down for
10 s to reset and reboot the
measuring instrument.