Troubleshooting - Welby FTM394 Manual Del Usuario

Troubleshooting

Problem
The battery has
been inserted,
but the display
does not come
on.
Cause
There could be
foreign objects
in the battery
compartment.
The battery is
dead or inserted
wrong.
The battery is
not touching the
contacts.
There is a prob-
lem with the
electronics.
The measured
temperature
is lower than
89.6 °F (32.0 °C)
or higher
than 109.2 °C
(42.9 °C).
Troubleshooting
Solution
Remove the
debris from
the battery
compartment.
Insert a new
battery.
Double check
the polarity.
Check the bat-
tery contacts.
Remove the
battery, wait ca.
3 seconds, then
replace it.
Follow the in-
structions in the
user manual.
USA
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