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© 2020 All rights reserved. Data subject to change without notice.
cGas Detector Analog Transmitter - Operation Manual
Rev. B | 2020.07
It is important to ensure that excess water and/or dust is not somehow
entering the enclosure and physically damaging the circuit board or internal
components.
12 TROUBLE SHOOTING
cGas Detector won’t power up. (blank display)
Is the power properly connected? Check the wiring connections. Refer to
Section
6.6 Wiring Connections.
When calibrating a CO
2
sensor, Calibrate Zero keeps failing or the Calibrate
Span passes but the gas level reading keeps climbing.
Start the calibration process over. Flow the nitrogen gas for 4 minutes before
entering the Calibrate Zero menu. Then flow the span gas for 4 minutes before
entering the Calibrate Span menu.
Display shows “SPAN FAULT” message.
Check all connections and possible interferences and try a complete calibration
procedure from the beginning again to see if this corrects the fault. If a second
calibration does not resolve the fault then the sensor needs to be replaced.
Frequent, unexpected alarm signal sent to BAS/DDC.
Check to see if EMI and RF interference is causing the equipment to react this
way. Refer to Section
6.4.2 EMI and RF Interference Considerations
for more
information.