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11 Tips and assistance
11 Tips and assistance
11.1 Questions and answers
Question
is displayed
(top right on the
display)
Instrument
switches itself off
Display responds
sluggishly
Display: -----
Display: OOOOO
Display: UUUUU
Display: BT Fail
Display: Print Fail
Display: Probe Fail Probe damage
Display: OTA Fail
Display: APP Lost
34
Possible cause
Instrument battery is
almost spent
Auto Off function is
•
switched on
Remaining battery
•
capacity is insufficient
Ambient temperature is
very low
Sensor error
Permissible measuring
range has been exceeded
Permissible measuring
range has been undershot
Bluetooth connection
could not be established
Printout could not be
performed successfully
The update process "over
the air" of the measuring
instrument could not be
completed successfully.
Connection to the testo
Smart App was
interrupted. Keys are
locked for 3 s.
Possible solution
Replace instrument battery
Switch off Auto Off
•
function
Change the battery.
•
Increase ambient
temperature
Please contact your dealer
or Testo Customer Service.
Keep within the permissible
measuring range
Keep within the permissible
measuring range
Check Bluetooth
•
connections.
Restart measuring
•
instrument, restart testo
Smart App.
•
Check Bluetooth
connections, switch off
and then on again if
necessary.
Switch printer off and then
•
on again.
Please contact your dealer
or Testo Customer Service.
Restart the measuring
instrument and testo Smart
App and check the
Bluetooth
®
connection.
Restart the measuring
instrument and testo Smart
App and check the
Bluetooth
®
connection.
®
®
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