Failure
Unstable
measurement
(or) unreliable
measurement .
The
display
2 ]
[
has hung up .
Nothing is
displayed
on the
display
.
2 ]
[
Cause
The battery
voltage is low .
Faulty wiring or
circuit .
The display
2 ]
[
is switched off .
The battery is
inserted the
wrong way
round or the
battery contact
is poor .
The battery
voltage is low .
Solution
Replace the battery (see
"Insert/replace battery") .
Remove battery and re-
insert after 30 seconds .
Press the TEST button
to switch the display
on .
Remove the battery and
insert/replace it in line
with the terminals and the
chapter "Insert/replace
battery" so that it touches
all contacts .
Replace the battery in
line with the chapter
"Insert/replace battery" .
3 ]
[
2 ]
[
GB/IE
57