TROUBLESHOOTING
8 - 1
8. TROUBLESHOOTING
To aid the user in diagnosing the instrument, the unit has a
special mode that can display critical, low level
parameters.
Along with a troubleshooting table, the user can usually
narrow the problem down to one or two areas and correct
the problem without having to return the unit for repair.
8.1 Special Diagnostic Mode
To place the unit into the special diagnostic mode, first
turn the unit off. Next push and hold the
[Y/+]
key, while
still holding the
[Y/+]
key, also push and hold the
[MODE]
key for at least two seconds. After the required delay,
release both keys, the unit will now go through the normal
start-up display sequence. At the end of the special mode
start-up, the display will look something like “12x1”. Note
that no “ppm” is displayed. The first four digits are integer
counts from the sensor, “x1” is the count multiplier. At
higher gas concentrations this multiplier may change to
“x10”.
