Omega Engineering OS550 Series User Manual page 54

6
Troubleshooting Guide
The display is either
erratic or stays at
one reading
You can expect to see and hear the following:
6-2
Problem
• 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.
If you see an error code, either "ERR1", "ERR2", or
"ERR3", record the code and call our Customer
Service Department. Provide Customer Service with
the error code that is displayed in the upper left
corner of the display. The Customer Service
Department representative may ask you to return the
thermometer to the factory.
• The display will go back to the Real Time Mode
(Emissivity Display Mode).
Solution
a. Clean the thermometer lens.
Refer to Section 5.1.
b. Activate the Diagnostic Program in
the thermometer as follows:
c. Press the
d. Hold down the
the key until "VER X.X" is
displayed.
e. After running the diagnostic
program, press the
release this mode.
key.
key and press
key to