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IsoAir 310P Aerosol Particle Sensor Operations Manual
Page 9-1
Chapter 9
Troubleshooting
Problem
Symptoms
Possible Cause
Try...
No power
No lights
No communications
Electrical power source
fault
Check the electrical wiring.
Check the external AC
disconnect.
24 VDC power was
connected with AC
already on. Power spike
(or spark) caused failure
of auto-power up circuit.
Unplug AC power. Wait at
least five minutes. Plug AC
power back in. Do not plug
in 24 VDC connector when
AC power is on.
Communications
not established
Unable to view data
from working sensor.
Unit not initialized
correctly
Re-initialize the unit
Ethernet cable problem
Replace the Ethernet cable
Computer hardware or
software problem
Substitute a computer with
known good Ethernet
capability.
Refer to your Computer/
Ethernet card
documentation to correct
the fault.
Laser status error
Bad laser status
indication
Laser dead or detector
failure
Check status response for
detector failure messages.