System Alarms

ASLLC Alarm Configuration Detail
Overview: The AIRSYS ASLLC controller provides for 3 input alarms and 4 output alarms. All alarms are OPTIONAL; however, they are all active. This means for...
Tue, 24 Apr, 2018 at 12:42 PM
Blank Controller Display
A blank controller display (nothing on display, buttons not lit up) may be due to a variety of causes. Start by resetting the controller power. If the displ...
Wed, 28 Feb, 2018 at 5:18 PM
Communication Wire Identification
AIRSYS WPUs communicate with the controller via either a 13 wire harness (ASLLC.2, ASLLC.2.48) or a set of ethernet cables (ASLLC.2A, ASLLC.2A.48). Incorrec...
Wed, 28 Feb, 2018 at 5:19 PM
Reconnecting a Loose Humidity Sensor
In all versions of the AIRSYS Lead/Lag Controller (ASLLC) software, if the sensor is disconnected, an A19 alarm will be triggered and displayed on the pLD. ...
Wed, 28 Feb, 2018 at 5:19 PM
System Problems with No Alarms
In some cases, such as incorrect/loose alarm wiring, system problems can exist with no active alarms. Use the step test and test all system functions. If ce...
Wed, 28 Feb, 2018 at 5:19 PM
A02/A04: Low Pressure Alarm
A low pressure alarm indicates the controller has received an open signal from the normally closed low pressure switch circuit. Three active alarms within o...
Wed, 28 Feb, 2018 at 5:19 PM
A05: Smoke/Fire Alarm
The controller receives a normally closed signal (can be changed to normally open at SFT under D Menu or Manufacturer Menu – C2a) from the smoke/fire detect...
Wed, 28 Feb, 2018 at 5:19 PM
A03/A06: High Pressure Alarm
A high pressure alarm indicates the controller has received an open signal from the normally closed high pressure switch circuit. Three active alarms within...
Wed, 28 Feb, 2018 at 5:20 PM
A07: High Temp Alarm
The High Temp Alarm is triggered when the indoor temperature exceeds temperature setpoint + high temp alarm trigger (default = 16°F). This alarm has a built...
Wed, 28 Feb, 2018 at 5:20 PM
A08: Low Temp Alarm
Low Temp Alarm is triggered when the indoor temperature drops below temperature setpoint - low temp alarm trigger (default = 34°F). This alarm has built-in ...
Wed, 28 Feb, 2018 at 5:20 PM