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