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Troubleshooting Guide
6
6-2
Problem Solution
The thermometer is Remove and reinstall the batteries or
“locked up” (the disconnect and reconnect the ac
display is “frozen”). adapter.
The display is either 1. Clean the thermometer lens.
erratic or stays at one Refer to Section 4.2.
reading.
2. Activate the Diagnostic Program in
the thermometer as follows:
a. Pull the trigger and press the
key to lock the trigger.
b. Hold down the key and
press the key until
“VER X.X” is displayed.
You can expect to see and hear the
following:
• You will see the version number
“VER X.X” of the software for about
1 second.
• You will hear a beep, “TST” is
displayed and °F flashes.
• Soon after, all of the segments of
the display including the
backlighting will light up for about
1 second.
• The display will clear and a PAS
(pass) or ERR (error) code may be
seen on the display.
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