Setra System Model 370 - Manual (Page 11)

2.3 DISPLAY MESSAGES
UnAbLE The gauge is unable to execute the requested function in its
current configuration. Clear the display and continue.
OFLO The display is over-ranged because excess pressure is applied
or because the user-defined conversion exceeds the number of
digits available in the display.
FLASHING
DISPLAY
The pressure applied exceeds the rated range of the sensor.
BUSY The gauge is acquiring a stable reading.
Other messages which are displayed in the course of using the various functions of
the Model 370 are explained in the sections of the manual concerning those functions.
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