TESTO 875 - Tips and assistance; Questions and Answers

8 Tips and assistance
34
8 Tips and assistance
8.1. Questions and answers
Question Possible causes/solution
Message Backup battery
empty or not present is
shown.
1. Confirm the message with [OK].
2. Change buffer battery, see
Change buffer battery page 32.
Error No memory card
inserted! is shown.
Memory card defective or not inserted.
1. Confirm the message with [OK].
2. Check or insert memory card.
Error Memory card full! is
shown.
Insufficient memory present.
1. Confirm the message with [OK].
2. Insert new memory card.
Error No lens/wrong lens!
is shown.
1. Switch off thermal imager.
2. Check lens
> Change lens if necessary.
Message Charging not
possible! is shown.
Ambient temperature is outside the
permissible range for charging the
battery.
1. Confirm the message with [OK].
2. Keep to the permissible ambient
temperature.
Error Permissible
instrument temperature
exceeded! is shown.
1. Switch off thermal imager.
2. Let instrument cool off and keep to
the permissible ambient
temperature.
--- or +++ is shown instead
of the reading.
Reading is outside of the measuring
range.
> Change measuring range.
xxx is shown instead of the
reading.
Reading cannot be calculated.
> Check parameter settings for
plausibility.
If we could not answer your question, please contact your dealer or
Testo Customer Service. For contact details see the rear side of
this document or the web page www.testo.com/service-contact