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Chapter 7 Troubleshooting
000190-09 NIOX VERO
®
User Manual US
31
A41
Sensor error
Remove any sources of disturbance
(such as cordless/mobile telephones or
gas emitting appliances). When the
instrument is ready for measurement try
to repeat the measurement. If alert
persists, power off the instrument,
remove and insert the Sensor and
restart the instrument.
A42
Sensor warning
Contact Circassia Technical support.
This warning indicates that the sensor
may soon stop working due to battery
failure.
A50
Measurement failure
The measurement value does not fall
between 5-50 ppb.
Restart the QC tester qualification from
day one.
A51
Too many QC attempts
In one day the same test person has
attempted to perform several QC
measurements.
Wait one day and perform the next QC
measurement.
Instrument
alerts
Screen
Action
A52
QC measurement failure
Moving mean value out of range.
Restart the QC tester qualification from
qualification day one.
A53
NO-scrubber result out of range
NO scrubber result over 10 ppb. Check
that the handle cap was attached when
instructed.
Restart the QC measurement.
If continuously shown replace the NO
scrubber.
A54
QC daily result too low
QC daily result lower than limits from
moving mean.
A55
QC daily result too high
QC daily result higher than limits from
moving mean.
Instrument
alerts
Screen
Action
Summary of Contents for NIOX VERO
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