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

11 Tips and assistance

Tips and assistance

Questions and answers

Question
is displayed (top
right on the display)
Instrument switches
itself off
Display responds
sluggishly
Display: ----
Display: OOOO
Display: UUUU
Display: BT Fail
Display: Print Fail
Display: Probe Fail
Display: OTA Fail
32
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
Probe damage
The update process
"over the air" of the
measuring instrument
could not be completed
successfully.
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 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.
®
®