Waste Electrical And Electronic Equipment (Weee) - Honeywell C7355B User Manual

C7355B IN-DUCT IAQ MONITOR
Fault Check
If a fault occurs in a normal use environment, see Table 4 to troubleshoot. If the fault cannot be eliminated, contact the
dealer or the manufacturer.
Fault condition
PM2.5 data abnormal, deviation is too
large, the value is too high or too low
The CO data is abnormal, the value is
2
too high or too low
TVOC's deviation is too large (high or
low)
Temperature and humidity deviation is
too large, the value is too high or low
Temperature and humidity deviation is
too large; value does not change for a
long time
Communication interruption RS-485
(Modbus RTU)
Waste Electrical and Electronic
Equipment (WEEE)
• At the end of the product life, dispose
of the packaging and product in an
appropriate recycling center.
• Do not dispose of the device with the
usual domestic refuse.
• Do not burn the device.
Honeywell Building Technologies
Honeywell
715 Peachtree Street NE
Atlanta, GA 30308
customer.honeywell.com
Honeywell Building Technologies
Honeywell GmbH
Böblinger Strasse 17
71101 Schönaich, Germany
buildings.honeywell.com
Table 4. Fault Check-out.
Check whether there is debris or a lot of dust in the C7355A housing or on the
air inlet and air outlet.
The CO sensor has a self-calibration function inside. Usually the self-
2
calibration will return CO
CO concentration is around 400 ppm for at least 4 hours in every 24 periods.
2
The self-calibration environment should last for one week.
TVOC in the environment needs to be stabilized for at least 48 hours after the
sensor is powered on.TVOC data deviation may be a little large within a short
time after power is on. TVOC base line deviation may result in large data
deviation.The equipment can be placed outside the window or outdoors for at
least 24 hours when the outdoor air is good and clear, allowing TVOC to retrace
its baseline.
Check whether the environmental factors surrounding the C7355B has any
influence, such as direct sunlight, close to the heating or air conditioning air
outlets, etc.
Sensor can be powered off and back on to see if the reading returns to normal. If
value cannot be recovered, contact the dealer or manufacturer.
Check if the power supply is normal and if the RS-485 terminal is loose. Check
whether the RS-485 communication line is accidentally cut. Check for an
inductive load with electromagnetic interference near the equipment or RS-485
communication line, such as a water pump.
FCC Part 15 compliant
This device complies with part 15 of the FCC Rules.
Operation is subject to the following two conditions:
(1) This device may not cause harmful interference, and
(2)This device must accept any interference received,
including interference that may cause undesired
operation.
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©2020 Honeywell International Inc.
31-00438—01 M.S. 11-20
Printed in United States
Troubleshooting
values to normal. Self-calibration conditions: The
2