26
EN
7. Faults
Personnel:
skilled electrical personnel
Error
number
Fault
Cause
Measure
1
Alarm indication remains
unlit
LED defect
Send in for repair
2
Displayed gas
concentration < -5 %
Contact WIKA service
3
Measuring range exceed-
ed > 130 % of the measur-
ing span (over range fault)
Contact WIKA service
4
Temperature of the
processor > 70 °C
Ambient tempera-
ture too high
Select an installation
location with a permissi-
ble ambient temperature
5
Temperature of the
processor < 0 °C
Ambient tempera-
ture too low
Select an installation
location with a permissi-
ble ambient temperature
6
Temperature of the sensor
> 70 °C
Ambient tempera-
ture too high
Select an installation
location with a permissi-
ble ambient temperature
7
Temperature of the sensor
< 0 °C
Ambient tempera-
ture too low
Select an installation
location with a permissi-
ble ambient temperature
8
Reference signal under
50 % of the nominal value
Contact WIKA service
9
Reference signal under
10 % of the nominal value
Contact WIKA service
10
Sampling of the span
calibration too close to the
zero point
Restart the instrument.
Carry out zero point/
span calibration
11
Check sum of the
coefficients not equal to 1
Check the saved
coefficients
12
Flow rate not OK (flow
fault)
Contact WIKA service
7. Faults
