17
10. Trouble Alarm
•
The product has a self-inspection function, and the trouble alarm will operate if a problem
occurs.
•
The product will inform the user of the problem details with the display shown in the
following table when the trouble alarm operates.
•
When the trouble alarm is generated, the analog signal will be approximately 0.9 mA or
below.
Screen
display
Trouble
indicator
Problem
details
Probable cause
Remedy
Yellow
lamp
flashes
Power supply
voltage drop
error
The power supply
voltage is low.
Check the power supply
voltage.
Yellow
lamp
flashes
Over full scale
The span adjustment
may not be correct.
Make a span
adjustment again.
The sensor or sensor
connector is
disconnected.
Make sure that the
sensor and sensor
connector are inserted
properly.
Yellow
lamp
flashes
Under zero
point
The sensor is connected
backward.
See if the sensor is
connected backward.
The Detector may not
have been surrounded
with clean air during
span adjustment.
After checking the
environment around the
Detector, make the 21.0
vol% adjustment again.
If the Detector still
cannot be adjusted,
make the span rough
adjustment.
Lamp is
OFF
Span
adjustment
error
The life expectancy of
the sensor may have
expired.
Replace the sensor unit.
•
If a screen other than the above is displayed, refer to 12. Troubleshooting section.
•
If the product does not reset to normal operation after taking the measures shown in the
table or if the problem is not listed in the table, contact your local representative.
•
If the product goes into any unintended mode during adjustment or setting, cease
operating the product and contact your local representative.
