Tips And Assistance; Questions And Answers - TESTO 545 Instruction Manual

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11 Tips and assistance

11.1 Questions and answers

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