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10. Questions and answers
Question Possible causes Possible solution
is lit. - Battery empty. Change battery.
Intrument cannot be - Battery empty. Change battery.
switched on.
Lasers light up briefly - Battery empty. Change battery.
after switching on,
then go out.
Measurement value - Measurement value outside -
- - - - lights up. measuring range.
Display FULL appears - Measurement protocol Delete memory
memory full
Err EE or Err HSEE Send instrument to Testo Customer Services
appears
If we were not able to answer your question, please contact your dealer or Testo
Customer Service. For contact data, see back of this document or web page
www.testo.com/service-contact
10. Questions and answers
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