8. Questions and answers 33
8. Questions and answers
This chapter gives answers to frequently asked questions.
Question Possible causes Possible solution
is lit (bottom right · Instrument battery is · Replace instrument
in display). almost spent. battery.
Instrument switches · Auto Off function · Switch function off.
itself off automatically. is switched on.
· Residual capacity · Replace battery.
of battery is too low.
Display:
----- · Probe is not plugged in. · Switch instrument off,
connect probe and
switch instrument
back on again.
· Probe break. · Please contact your
dealer or Testo
Customer Service.
Display reacts slowly · Ambient temperature · Raise ambient
is very low. temperature.
Display: uuuuu · Permitted measuring · Keep to permitted
range was undershot. measuring range.
Display: ooooo · Permitted measuring · Keep to permitted
range was exceeded. measuring range.
If we are unable to answer your question, please contact
your dealer or Testo Customer Service. Contact details can
be found on the guarantee card or on the Internet under
www.testo.com
.
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