User Manual

37
8. Questions and
answers
This chapter gives answers to frequently asked questions.
Question Possible causes Possible solution
is lit (bottom left · Instrument battery is · Replace instrument
in display). almost spent. battery.
is lit (above · Radio probe battery · Replace radio probe
symbol). is almost spent. battery.
Instrument switches · Auto Off function Switch function off.
itself off. is switched on.
· Residual capacity · Replace battery
of battery is too low.
Display:
----- · Sensor is not plugged in. · Switch instrument off,
connect probe and
switch instrument
back on again.
· Sensor break. · Please contact your
dealer or Testo
Customer Service.
Display: uuuu · Permitted measuring range · Keep to permitted
was undershot. measuring range.
Display: oooo· Permitted measuring range · Keep to permitted
was exceeded. measuring range.
Display: no Signal · Registered probe · Switch on probe.
was not found. · Bring probe into
reception range.
· Register radio probe
again, see chapter
Performing settings,
objective To register
the radio probe.
Date/time are · Voltage supply was · Reset date and time.
no longer correct interrupted for a longer time
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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8. Questions and answers