Troubleshooting
AutroSense Micra 10 Aspirating Smoke Detector Installers Handbook
37
Problem
Solution/Corrective Action
Flow fault errors
These occur when the airflow rate into the detector exceeds the
preprogrammed parameters. As the detector “learns” the flow setup from
the initial installation, this usually means that there has been some change
in conditions. If the detector input is sampled from one area and the
exhaust is in another area with different pressure (e.g., the detector is in a
roof space and sampling from an enclosed room), this may lead to flow
faults. In this case, it would be necessary to lead a pipe from the exhaust
to the protected area to ensure nominal flow.
Low Flow error
message
Check that the pipe is not blocked.
If the pipe is unused, check that the flow sensor for this pipe has been
disabled.
Check that the low flow fault threshold is not set too high.
In the case of intermittent fault indications, try increasing the flow fault
delay time.
High Flow error
message
Check that the pipe is seated in the inlet and is not broken or cracked.
Check that installed pipework is fitted with endcaps. PipeCAD pipe
modeling software prompts for the use of appropriate endcaps. Open bore
pipes are not recommended.
Check that the high flow fault threshold is not set too low.
In the case of intermittent fault indications, try increasing the flow fault
delay time.
Summary of Contents for AutroSense Micra 10
Page 4: ...ii AutroSense Micra 10 Aspirating Smoke Detector Installers Handbook Glossary 45 Index 47...
Page 46: ...Troubleshooting 38 AutroSense Micra 10 Aspirating Smoke Detector Installers Handbook...
Page 52: ...Maintenance 44 AutroSense Micra 10 Aspirating Smoke Detector Installers Handbook...
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