15
2. Operation and Maintenance
Alarm/Fault
Reason
Action(s)
Suction Temperature Sensor
Failure
Variable causes (ensure
condenser signal wiring is
intact)
Replace as necessary
Supply Temperature Sensor
Failure
Suction Pressure Sensor
Failure
Discharge Pressure Sensor
Failure
Return Temperature Sensor
Failure
Return Humidity Sensor
Failure
Liquid Pipe Temperature
Sensor Failure
Heater Fault (if equipped)
FAQ
Symptom
Reason
Action(s)
Water Leak
Condensate management system leak
Consider powering off the cooler and
turning on a different one until the leak
can be diagnosed
Leak detected from another source
If leak detection is installed, check to
see if it is triggered by another source
Cooler Discharging Warm Air
Excessive heat, not enough cooling
Turn on additional In-Row Coolers
Cooling system in standby
Fans may rotate while In-Row Cooler
is in standby. If the other coolers are
operational, no action is required
Refrigerant leak / compressor failure
Contact technician to diagnose
Cooler Not Responding / Not Turning On Boot sequence
Wait for system to finish boot sequence
Initializing
Sometimes it takes a while for the
system to initialize; wait a minute or two
and check again
Loss of Cooling
Group control not set up properly
Configure group control (see group
control section)
