English (GB)
51
12.2 Fault finding
Fault
Cause
Remedy
1.
No display
following start-up.
a)
No power supply.
Connect the power supply.
b)
Display contrast too light/too dark.
Set the contrast in the "Setup" menu.
See section
2.
Display
permanently at
zero.
a)
Open circuit in cable between
sensor and gas warning device.
Check the connecting cable, and
establish connection.
3.
Display with
measured value
unsteady.
a)
Interferences on cable from sensor. Check that the display is properly
connected.
Route the cable separately from the
power supply cables.
b)
Sensor faulty.
Replace the sensor.
4.
Measured value
display slow or no
measured value
display.
a)
Sensor too old.
Replace the sensor.
b)
Sensor dirty.
Replace the sensor.
5.
Sensor zero point
increases
disproportionately.
a)
Sensor has been subjected to
humidity.
Replace the sensor.
6.
Sensor fault
(amperometric
sensor).
a)
Sensor not connected.
Connect the sensor.
b)
Cable faulty.
Replace the cable.
c)
Sensor faulty.
Replace the sensor.
7.
Sensor fault
(potentiostatic
sensor).
a)
Cable faulty.
Replace the cable.
b)
Sensor faulty.
Replace the sensor.
c)
CAN address on sensor interface
set incorrectly.
Check and modify the CAN address on
the sensor interface.
d)
Termination resistor not set on
sensor interface and/or on Conex
®
DIA-G.
Check and modify the termination
resistor on the sensor interface and/or
on the Conex
®
DIA-G.
8.
CAN interface
fault.
a)
Connecting line interrupted.
Check the connecting line, and establish
connection.
9.
Data for
potentiostatic
sensors not read.
a)
CAN address on sensor interface
set incorrectly.
Check and modify the CAN address on
the sensor interface.
b)
Termination resistor not set on
sensor interface and/or on Conex
®
DIA-G.
Check and modify the termination
resistor on the sensor interface and/or
on the Conex
®
DIA-G.
10. Potentiostatic
sensor provides
faulty measured
values.
a)
Sensor faulty.
Replace the sensor.
11. Device cannot be
set.
a)
Incorrect code set (device is
protected from any adjustments).
See section
