Honeywell IAQPoint2 Technical Manual page 49

Affected
Version
Models
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IAQPoint2 Troubleshooting Guide
Diagnostic
Symptom
Tests
If CO sensor is fitted,
2
Gas reading seems
check if ABC feature
inaccurate.
is turned "ON"
Confirm that the
monitor's reported
concentration
responded when the
calibration gas flow
started.
Gas Calibration op-
eration reports "base
cal fail"
Confirm that the
reported concentra-
tion is within 200
ppm of the target
concentration
IAQPoint2
Cause Solution
ABC feature is
disabled unintention- Turn on ABC. (Allow
ally, thus preventing 3 weeks for automatic
automatic baseline corrections.)
correction.
If ABC is disabled
Calibrate as described
intentionally, unit is
on page 40.
in need of calibration
if ABC is enabled,
the environment may
not be suitable for
Disable ABC and use
ABC. ABC requires
periodic manual cali-
an environment with
bration as described
atmospheric CO2
on page 40.
concentration for
several hours per
day.
Confirm that a
regulator for 0.5 l/min
flow is used such as
Honeywell part number
Calibration gas was
M-502877.
not delivered to the
Confirm that the
sensor.
gas delivery tube is
connected to the side
calibration port shown
in Figures 7 and 8.
Confirm that the cor-
Wrong calibration rect calibration gas is
gas cylinder used used such as Honey-
well part M-501038
Change the calibra-
The sensor was pre-
tion is two smaller
viously miscaibrated
steps by setting the
to be far in error.
target concentration
This can happen if
midway between the
a zero calibration is
current reading and
performed without
the cylinder's true CO2
gas.
concentration.
The monitor is Contact Honewell
defective Service.
continued..
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