AIREDALE LogiCool InRak - Alarm Codes AL02-AL24

Troubleshooting
IT Cooling
LogiCool InRak™
87
InRak™ Technical Manual 7462807 V1.11.0_04_2016
Alarms
Code Description
Auto Reset
Unit
Disabled
Component
Disabled
Cause Action
AL02 Clock board fault or not connected
● ●
Indicates an error with the real time clock on-
board the controller. During alarm any time
zones set up would be ignored.
Once the clock returns to
functioning correctly the alarm
will be automatically reset and
any time zones set up will be
restored.
AL03 Extended memory fault
● ●
Controller memory fault Alarm is generated
AL04 Liquid pressure probe alarm
● ●
Indicates that there is a fault with the
corresponding probe/input, possible causes are
the sensor going open circuit or there is a wiring
fault. All sensor alarms are auto reset once the
fault has been rectied.
Head pressure control is
disabled and the outdoor coil fan
is set to probe alarm level
AL05 Return humidity probe alarm
● ●
Alarm is generated
AL06
Supply air temperature probe
alarm
● ●
AL07
Return air temperature probe
alarm
• •
AL08 Differential pressure probe alarm
• • •
Alarm is generated. Unit shuts
down – airow fail
AL10
Liquid line temperature probe
alarm
• •
Alarm is generated
AL11
Aisle/differential pressure probe
alarm
• •
AL13 Low pressure switch alarm
• • •
Indicates that the low pressure safety switch has
been tripped and the controller has switched off
the unit.
Alarm will auto-reset up to 3
times in 24 hours. A further trip
will require manual reset.
AL14 Backup power supply active
• •
Alarm is generated. Heating and
humidication are disabled
AL15 Refrigerant leak detector alarm
•
Indicates the unit has detected a refrigerant leak.
Once the refrigerant level in the
air has fallen below set point
the alarm will reset. Unit will
either shutdown or pumpdown
depending on setting chosen.
AL16 High pressure alarm
• • •
Indicates high liquid pressure. Unit is shut down.
Alarm will auto-reset up to 3
times in 24 hours once the
pressure has decreased to
a safe level. A further trip will
require manual reset.
AL17
High pressure alarm critical trip
count
• •
Indicates high pressure alarm has tripped 3
times in 24 hours.
Unit is disabled. Alarm must be
manually reset.
AL18 pLAN ofine alarm
•
Indicates that there is a network fault between
the units. If the unit is congured as standby
then the unit will become active until the network
fault is corrected.
The alarm will automatically
reset once the network fault is
corrected.
AL19 Master unit ofine alarm
•
Indicates that the master unit has been lost from
the network. If the unit is congured as standby
then the unit will become active until the network
fault is corrected.
AL20
High discharge temperature
warning
•
Discharge temperature has reached 120°C
Alarm will reset once the
temperature is below threshold
AL21 High discharge temperature alarm
• •
The discharge temperature is over the threshold.
Unit is disabled after 3 occurrences in 24 hours
AL22
Discharge temp. alarm critical trip
count
• • •
Indicates high discharge temperature alarm has
tripped 3 times in 24 hours.
Unit is disabled. Alarm must be
manually reset.
AL24 Fan trip alarm
• •
The alarm is generated if the controller receives
a fan trip signal from the fan.
Alarm is generated