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Error messages
Error messages
NO-value drifts
Double module
Dilution
O
signal too high
2
O
cell spent
2
CO signal unstable
CO signal too high
CO swiched-off
NO signal unstable
NO signal too high
NO swiched-off
NO
signal unstable
2
NO
signal too high
2
NO
swiched-off
2
Battery low
Device
temperature
Pump flow rate
Gas cooling system
Cell temperature
too high
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100
Cause
Loss of aux. voltage
for NO
Measuring module already installed
Gas flow rate in the dilution
path too high / too low
O
value above 20.9%
2
CO cell drifts excessively
CO signal not at zero
CO value above selected
switch-off limit
NO cell drifts excessively
NO-signal not at zero
NO-value above selected
switch-off limit
NO
cell drifts excessively
2
NO
signal not at zero
2
NO
value above selected
2
switch-off limit
Connect device to
mains
Device temperature
is outside the
operating temperature range
Too low / too high
gas flow rate
Gas cooler not working
Cell temperature outside
specifications
Remedy
Measure only after 2h
Switch device off / on
Replace O
cell
2
Replace cell if necessary
Wait until regenerated
Replace cell if necessary
Wait until regenerated
Replace cell if necessary
Wait until regenerated
Check pump / gas path
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