Troubleshooting
Troubleshooting
Fault
The bat-
teries have
been insert-
ed, but the
LED display
1
is blank.
36
Cause
There may
be debris in
the battery
compartment.
The batteries
are empty or
were inserted
with incorrect
polarity.
The battery
contacts are
not aligned
with the
terminals.
There is a
fault in the
electronics.
The tempera-
ture measured
is less than
32.0 °C/89.6 °F
or higher than
42.9 °C/109.3
°F.
The thermo-
meter is defec-
tive (hardware
error).
Solution
Remove the
debris from
the battery
compartment.
Replace the bat-
teries with full
batteries. Make
sure the polarity
is correct!
Check the bat-
tery contacts.
Remove the
batteries and
put them back
in after approx.
3 seconds.
Observe the no-
tices in the user
manual.
Contact the
manufacturer/
vendor.