22 • Chapter 4: Startup and Operation
AirLink 7543 Gas Monitor Operator’s Manual
LED Functionality
1. Press and release
MENU
to clear an alarm indication once the alarm condition has cleared.
LED
Color / Status
Description
ALARM 1 off
No alarm condition has occurred on relay 1 since the last reset or power up
solid red
An alarm condition is currently happening on relay 1
blinking red
An alarm condition has occurred on relay 1, but condition has now gone
ALARM 2 off
No alarm condition has occurred on relay 2 since the last reset or power up
solid red
An alarm condition is currently happening on relay 2
blinking red
An alarm condition has occurred on relay 2, but condition has now gone
ALARM 3 off
No alarm condition has occurred on relay 3 since the last reset or power up
solid red
An alarm condition is currently happening on relay 3
blinking red
An alarm condition has occurred on relay 3, but condition has now gone
