TSI Instruments AIRASSURE 8144, Operation And Maintenance Manual

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Appendix B
Status Flags and Error Codes
Below is a table of error codes that may be listed in the sensor status
columns of the downloaded CSV file from the cloud and/or SD card.
Any error codes, other than zero, indicate one of the below errors
occurred during that logging interval.
The AirAssure
™ firmware is taking readings from the sensors usually
at a frequency greater than one time per second. What that means is
that if an error code is reported, it may have only occurred once
during logging interval. For example, a PM sensor error of 16, during
a 5 min logging interval, may have only occurred 1 time during the
300 times the firmware was attempting to take a reading from the
sensor. Therefore, use best judgement to determine if there is an
actual sensor failure. If the device seems to be reporting data
accurately, when compared to other AirAssure
™ devices and/or a
reference device, you may not have to take any action. If needed call
TSI
®
Technical Support and they can help provide direction.
Type Value Definition Actions/Resolutions
Device
Status 0 No Errors N/A
1 Device was rebooted No action required
2 Data was not written
to the SD card (SD
card not present or
write failed) Confirm SD present and
installed properly
4 Cloud communication
error No action required
8 Sensor board battery
is low If error persists may have
to replace entire sensor
cartridge, it is not possible
to replace the coin battery
on the backside of the
sensor board